dnl Macros that test for specific features. dnl This file is part of Autoconf. dnl Copyright (C) 1992, 93, 94, 95, 96, 1998 Free Software Foundation, Inc. dnl dnl This program is free software; you can redistribute it and/or modify dnl it under the terms of the GNU General Public License as published by dnl the Free Software Foundation; either version 2, or (at your option) dnl any later version. dnl dnl This program is distributed in the hope that it will be useful, dnl but WITHOUT ANY WARRANTY; without even the implied warranty of dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the dnl GNU General Public License for more details. dnl dnl You should have received a copy of the GNU General Public License dnl along with this program; if not, write to the Free Software dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA dnl 02111-1307, USA. dnl dnl As a special exception, the Free Software Foundation gives unlimited dnl permission to copy, distribute and modify the configure scripts that dnl are the output of Autoconf. You need not follow the terms of the GNU dnl General Public License when using or distributing such scripts, even dnl though portions of the text of Autoconf appear in them. The GNU dnl General Public License (GPL) does govern all other use of the material dnl that constitutes the Autoconf program. dnl dnl Certain portions of the Autoconf source text are designed to be copied dnl (in certain cases, depending on the input) into the output of dnl Autoconf. We call these the "data" portions. The rest of the Autoconf dnl source text consists of comments plus executable code that decides which dnl of the data portions to output in any given case. We call these dnl comments and executable code the "non-data" portions. Autoconf never dnl copies any of the non-data portions into its output. dnl dnl This special exception to the GPL applies to versions of Autoconf dnl released by the Free Software Foundation. When you make and dnl distribute a modified version of Autoconf, you may extend this special dnl exception to the GPL to apply to your modified version as well, *unless* dnl your modified version has the potential to copy into its output some dnl of the text that was the non-data portion of the version that you started dnl with. (In other words, unless your change moves or copies text from dnl the non-data portions to the data portions.) If your modification has dnl such potential, you must delete any notice of this special exception dnl to the GPL from your modified version. dnl dnl Written by David MacKenzie, with help from dnl Franc,ois Pinard, Karl Berry, Richard Pixley, Ian Lance Taylor, dnl Roland McGrath, Noah Friedman, david d zuhn, and many others. dnl dnl Changed by Bruno Haible, 18 January 1999 dnl ### Checks for programs dnl Check whether to use -n, \c, or newline-tab to separate dnl checking messages from result messages. dnl Idea borrowed from dist 3.0. dnl Internal use only. AC_DEFUN(AC_PROG_ECHO_N, [if (echo "testing\c"; echo 1,2,3) | grep c >/dev/null; then # Stardent Vistra SVR4 grep lacks -e, says ghazi@caip.rutgers.edu. if (echo -n testing; echo 1,2,3) | sed s/-n/xn/ | grep xn >/dev/null; then ac_n= ac_c=' ' ac_t=' ' ac_tt= else ac_n=-n ac_c= ac_t= ac_tt=' ' fi else ac_n= ac_c='\c' ac_t= ac_tt=' ' fi ]) AC_DEFUN(AC_PROG_CC, [AC_BEFORE([$0], [AC_PROG_CPP])dnl AC_CHECK_PROG(CC, gcc, gcc) if test -z "$CC"; then AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc) if test -z "$CC"; then case "`uname -s`" in *win32* | *WIN32*) AC_CHECK_PROG(CC, cl, cl) ;; esac fi test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH]) fi AC_PROG_CC_WORKS AC_PROG_CC_GNU if test $ac_cv_prog_gcc = yes; then GCC=yes else GCC= fi dnl Check whether -g works, even if CFLAGS is set, in case the package dnl plays around with CFLAGS (such as to build both debugging and dnl normal versions of a library), tasteless as that idea is. ac_test_CFLAGS="${CFLAGS+set}" ac_save_CFLAGS="$CFLAGS" CFLAGS= dnl AC_PROG_CC_G if test "$ac_test_CFLAGS" = set; then CFLAGS="$ac_save_CFLAGS" dnl # This doesn't work on Linux (libc-4.5.26): Because of differences between dnl # the shared and the static libraries there are less symbols available dnl # without -g than with -g. It is therefore better to run the configuration dnl # without -g and to add -g afterwards than the contrary. So don't add dnl # -g to the CFLAGS now. dnl elif test $ac_cv_prog_cc_g = yes; then dnl if test "$GCC" = yes; then dnl CFLAGS="-g -O2" dnl else dnl CFLAGS="-g" dnl fi else if test "$GCC" = yes; then dnl CFLAGS="-O" # Add "-O" to both the CC and CPP commands, to eliminate possible confusion # that results from __OPTIMIZE__ being defined for CC but not CPP. changequote(, )dnl if echo "$CC " | grep ' -O[1-9 ]' > /dev/null 2>&1; then changequote([, ])dnl : # already optimizing else CC="$CC -O" ac_cv_prog_CC="$CC" fi else CFLAGS= fi fi ]) AC_DEFUN(AC_PROG_CXX, [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl AC_CHECK_PROGS(CXX, $CCC c++ g++ gcc CC cxx cc++ cl, gcc) AC_PROG_CXX_WORKS AC_PROG_CXX_GNU if test $ac_cv_prog_gxx = yes; then GXX=yes else GXX= fi dnl Check whether -g works, even if CXXFLAGS is set, in case the package dnl plays around with CXXFLAGS (such as to build both debugging and dnl normal versions of a library), tasteless as that idea is. ac_test_CXXFLAGS="${CXXFLAGS+set}" ac_save_CXXFLAGS="$CXXFLAGS" CXXFLAGS= dnl AC_PROG_CXX_G if test "$ac_test_CXXFLAGS" = set; then CXXFLAGS="$ac_save_CXXFLAGS" dnl # This doesn't work on Linux (libc-4.5.26): Because of differences between dnl # the shared and the static libraries there are less symbols available dnl # without -g than with -g. It is therefore better to run the configuration dnl # without -g and to add -g afterwards than the contrary. So don't add dnl # -g to the CFLAGS now. dnl elif test $ac_cv_prog_cxx_g = yes; then dnl if test "$GXX" = yes; then dnl CXXFLAGS="-g -O2" dnl else dnl CXXFLAGS="-g" dnl fi else if test "$GXX" = yes; then dnl CXXFLAGS="-O" # Add "-O" to both the CXX and CXXCPP commands, to eliminate possible confu- # sion that results from __OPTIMIZE__ being defined for CXX but not CXXCPP. changequote(, )dnl if echo "$CXX " | grep ' -O[1-9 ]' > /dev/null; then changequote([, ])dnl : # already optimizing else CXX="$CXX -O" ac_cv_prog_CXX="$CXX" fi else CXXFLAGS= fi fi ]) dnl Determine a Fortran 77 compiler to use. If `F77' is not already set dnl in the environment, check for `g77', `f77' and `f2c', in that order. dnl Set the output variable `F77' to the name of the compiler found. dnl dnl If using `g77' (the GNU Fortran 77 compiler), then `AC_PROG_F77' dnl will set the shell variable `G77' to `yes', and empty otherwise. If dnl the output variable `FFLAGS' was not already set in the environment, dnl then set it to `-g -02' for `g77' (or `-O2' where `g77' does not dnl accept `-g'). Otherwise, set `FFLAGS' to `-g' for all other Fortran dnl 77 compilers. dnl dnl AC_PROG_F77() AC_DEFUN(AC_PROG_F77, [AC_BEFORE([$0], [AC_PROG_CPP])dnl if test -z "$F77"; then AC_CHECK_PROGS(F77, g77 f77 f2c) test -z "$F77" && AC_MSG_ERROR([no acceptable Fortran 77 compiler found in \$PATH]) fi AC_PROG_F77_WORKS AC_PROG_F77_GNU if test $ac_cv_prog_g77 = yes; then G77=yes dnl Check whether -g works, even if FFLAGS is set, in case the package dnl plays around with FFLAGS (such as to build both debugging and dnl normal versions of a library), tasteless as that idea is. ac_test_FFLAGS="${FFLAGS+set}" ac_save_FFLAGS="$FFLAGS" FFLAGS= AC_PROG_F77_G if test "$ac_test_FFLAGS" = set; then FFLAGS="$ac_save_FFLAGS" elif test $ac_cv_prog_f77_g = yes; then FFLAGS="-g -O2" else FFLAGS="-O2" fi else G77= test "${FFLAGS+set}" = set || FFLAGS="-g" fi ]) AC_DEFUN(AC_PROG_CC_WORKS, [AC_MSG_CHECKING([whether the C compiler ($CC $CFLAGS $LDFLAGS) works]) AC_LANG_SAVE AC_LANG_C AC_TRY_COMPILER([int main(){return(0);}], ac_cv_prog_cc_works, ac_cv_prog_cc_cross) AC_LANG_RESTORE AC_MSG_RESULT($ac_cv_prog_cc_works) if test $ac_cv_prog_cc_works = no; then AC_MSG_ERROR([installation or configuration problem: C compiler cannot create executables.]) fi AC_MSG_CHECKING([whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler]) AC_MSG_RESULT($ac_cv_prog_cc_cross) cross_compiling=$ac_cv_prog_cc_cross ]) AC_DEFUN(AC_PROG_CXX_WORKS, [AC_MSG_CHECKING([whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) works]) AC_LANG_SAVE AC_LANG_CPLUSPLUS AC_TRY_COMPILER([int main(){return(0);}], ac_cv_prog_cxx_works, ac_cv_prog_cxx_cross) AC_LANG_RESTORE AC_MSG_RESULT($ac_cv_prog_cxx_works) if test $ac_cv_prog_cxx_works = no; then AC_MSG_ERROR([installation or configuration problem: C++ compiler cannot create executables.]) fi AC_MSG_CHECKING([whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) is a cross-compiler]) AC_MSG_RESULT($ac_cv_prog_cxx_cross) cross_compiling=$ac_cv_prog_cxx_cross ]) dnl Test whether the Fortran 77 compiler can compile and link a trivial dnl Fortran program. Also, test whether the Fortran 77 compiler is a dnl cross-compiler (which may realistically be the case if the Fortran dnl compiler is `g77'). dnl dnl AC_PROG_F77_WORKS() AC_DEFUN(AC_PROG_F77_WORKS, [AC_MSG_CHECKING([whether the Fortran 77 compiler ($F77 $FFLAGS $LDFLAGS) works]) AC_LANG_SAVE AC_LANG_FORTRAN77 AC_TRY_COMPILER(dnl [ program conftest end ], ac_cv_prog_f77_works, ac_cv_prog_f77_cross) AC_LANG_RESTORE AC_MSG_RESULT($ac_cv_prog_f77_works) if test $ac_cv_prog_f77_works = no; then AC_MSG_ERROR([installation or configuration problem: Fortran 77 compiler cannot create executables.]) fi AC_MSG_CHECKING([whether the Fortran 77 compiler ($F77 $FFLAGS $LDFLAGS) is a cross-compiler]) AC_MSG_RESULT($ac_cv_prog_f77_cross) cross_compiling=$ac_cv_prog_f77_cross ]) AC_DEFUN(AC_PROG_CC_GNU, [AC_CACHE_CHECK(whether we are using GNU C, ac_cv_prog_gcc, [dnl The semicolon is to pacify NeXT's syntax-checking cpp. cat > conftest.c </dev/null 2>&1; then ac_cv_prog_gcc=yes else ac_cv_prog_gcc=no fi])]) AC_DEFUN(AC_PROG_CXX_GNU, [AC_CACHE_CHECK(whether we are using GNU C++, ac_cv_prog_gxx, [dnl The semicolon is to pacify NeXT's syntax-checking cpp. cat > conftest.C </dev/null 2>&1; then ac_cv_prog_gxx=yes else ac_cv_prog_gxx=no fi])]) dnl Test whether for Fortran 77 compiler is `g77' (the GNU Fortran 77 dnl Compiler). This test depends on whether the Fortran 77 compiler can dnl do CPP pre-processing. dnl dnl AC_PROG_F77_GNU() AC_DEFUN(AC_PROG_F77_GNU, [AC_CACHE_CHECK(whether we are using GNU Fortran 77, ac_cv_prog_g77, [cat > conftest.fpp </dev/null 2>&1; then ac_cv_prog_g77=yes else ac_cv_prog_g77=no fi])]) AC_DEFUN(AC_PROG_CC_G, [AC_CACHE_CHECK(whether ${CC-cc} accepts -g, ac_cv_prog_cc_g, [echo 'void f(){}' > conftest.c if test -z "`${CC-cc} -g -c conftest.c 2>&1`"; then ac_cv_prog_cc_g=yes else ac_cv_prog_cc_g=no fi rm -f conftest* ])]) AC_DEFUN(AC_PROG_CXX_G, [AC_CACHE_CHECK(whether ${CXX-g++} accepts -g, ac_cv_prog_cxx_g, [echo 'void f(){}' > conftest.cc if test -z "`${CXX-g++} -g -c conftest.cc 2>&1`"; then ac_cv_prog_cxx_g=yes else ac_cv_prog_cxx_g=no fi rm -f conftest* ])]) dnl Test whether the Fortran 77 compiler can accept the `-g' option to dnl enable debugging. dnl dnl AC_PROG_F77_G() AC_DEFUN(AC_PROG_F77_G, [AC_CACHE_CHECK(whether $F77 accepts -g, ac_cv_prog_f77_g, [cat > conftest.f << EOF program conftest end EOF if test -z "`$F77 -g -c conftest.f 2>&1`"; then ac_cv_prog_f77_g=yes else ac_cv_prog_f77_g=no fi rm -f conftest* ])]) AC_DEFUN(AC_PROG_GCC_TRADITIONAL, [AC_REQUIRE([AC_PROG_CC])dnl AC_REQUIRE([AC_PROG_CPP])dnl if test $ac_cv_prog_gcc = yes; then AC_CACHE_CHECK(whether -traditional is needed for ${CC-cc} on this system, ac_cv_prog_gcc_traditional, [ ac_pattern="Autoconf.*'x'" AC_EGREP_CPP($ac_pattern, [#include Autoconf TIOCGETP], ac_cv_prog_gcc_traditional=yes, ac_cv_prog_gcc_traditional=no) if test $ac_cv_prog_gcc_traditional = no; then AC_EGREP_CPP($ac_pattern, [#include Autoconf TCGETA], ac_cv_prog_gcc_traditional=yes) fi if test $ac_cv_prog_gcc_traditional = no; then # On some USL SVR4 systems, gcc's fixinc.svr4 modifies and # in such a way that "#include " results in a # syntax error because of `sigset_t' if gcc is called with __STDC__=1 # but __STRICT_ANSI__ undefined. Remedy: use -traditional. ac_prog=' #include #include #ifdef __cplusplus extern "C" void exit(int); #endif int main() { exit(0); }' echo "$ac_prog" > conftest.c if eval $ac_link; then : else ac_prog=' #undef __STDC__ #include #include #ifdef __cplusplus extern "C" void exit(int); #endif int main() { exit(0); }' echo "$ac_prog" > conftest.c if eval $ac_link; then ac_cv_prog_gcc_traditional=yes fi fi rm -f conftest* fi]) if test $ac_cv_prog_gcc_traditional = yes; then CC="$CC -traditional" fi fi ]) AC_DEFUN(AC_PROG_CC_C_O, [if test "x$CC" != xcc; then AC_MSG_CHECKING(whether $CC and cc understand -c and -o together) else AC_MSG_CHECKING(whether cc understands -c and -o together) fi set dummy $CC; ac_cc="`echo [$]2 | changequote(, )dnl sed -e 's/[^a-zA-Z0-9_]/_/g' -e 's/^[0-9]/_/'`" changequote([, ])dnl AC_CACHE_VAL(ac_cv_prog_cc_${ac_cc}_c_o, [echo 'foo(){}' > conftest.c # Make sure it works both with $CC and with simple cc. # We do the test twice because some compilers refuse to overwrite an # existing .o file with -o, though they will create one. ac_try='${CC-cc} -c conftest.c -o conftest.o 1>&AC_FD_CC' if AC_TRY_EVAL(ac_try) && test -f conftest.o && AC_TRY_EVAL(ac_try); then eval ac_cv_prog_cc_${ac_cc}_c_o=yes if test "x$CC" != xcc; then # Test first that cc exists at all. if AC_TRY_COMMAND(cc -c conftest.c 1>&AC_FD_CC); then ac_try='cc -c conftest.c -o conftest.o 1>&AC_FD_CC' if AC_TRY_EVAL(ac_try) && test -f conftest.o && AC_TRY_EVAL(ac_try); then # cc works too. : else # cc exists but doesn't like -o. eval ac_cv_prog_cc_${ac_cc}_c_o=no fi fi fi else eval ac_cv_prog_cc_${ac_cc}_c_o=no fi rm -f conftest* ])dnl if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = yes"; then AC_MSG_RESULT(yes) else AC_MSG_RESULT(no) AC_DEFINE(NO_MINUS_C_MINUS_O) fi ]) dnl Test if the Fortran 77 compiler accepts the options `-c' and `-o' dnl simultaneously, and define `F77_NO_MINUS_C_MINUS_O' if it does not. dnl dnl The usefulness of this macro is questionable, as I can't really see dnl why anyone would use it. The only reason I include it is for dnl completeness, since a similar test exists for the C compiler. dnl dnl AC_PROG_F77_C_O AC_DEFUN(AC_PROG_F77_C_O, [AC_BEFORE([$0], [AC_PROG_F77])dnl AC_MSG_CHECKING(whether $F77 understand -c and -o together) set dummy $F77; ac_f77="`echo [$]2 | changequote(, )dnl sed -e 's/[^a-zA-Z0-9_]/_/g' -e 's/^[0-9]/_/'`" changequote([, ])dnl AC_CACHE_VAL(ac_cv_prog_f77_${ac_f77}_c_o, [cat > conftest.f << EOF program conftest end EOF # We do the `AC_TRY_EVAL' test twice because some compilers refuse to # overwrite an existing `.o' file with `-o', although they will create # one. ac_try='$F77 $FFLAGS -c conftest.f -o conftest.o 1>&AC_FD_CC' if AC_TRY_EVAL(ac_try) && test -f conftest.o && AC_TRY_EVAL(ac_try); then eval ac_cv_prog_f77_${ac_f77}_c_o=yes else eval ac_cv_prog_f77_${ac_f77}_c_o=no fi rm -f conftest* ])dnl if eval "test \"`echo '$ac_cv_prog_f77_'${ac_f77}_c_o`\" = yes"; then AC_MSG_RESULT(yes) else AC_MSG_RESULT(no) AC_DEFINE(F77_NO_MINUS_C_MINUS_O) fi ]) dnl Define SET_MAKE to set ${MAKE} if make doesn't. AC_DEFUN(AC_PROG_MAKE_SET, [AC_MSG_CHECKING([whether ${MAKE-make} sets \$(MAKE)]) set dummy ${MAKE-make}; ac_make=`echo "[$]2" | sed 'y%./+-%__p_%'` AC_CACHE_VAL(ac_cv_prog_make_${ac_make}_set, [cat > conftestmake <<\EOF all: @echo 'ac_maketemp="${MAKE}"' EOF changequote(, )dnl # GNU make sometimes prints "make[1]: Entering...", which would confuse us. eval `${MAKE-make} -f conftestmake 2>/dev/null | grep temp=` changequote([, ])dnl if test -n "$ac_maketemp"; then eval ac_cv_prog_make_${ac_make}_set=yes else eval ac_cv_prog_make_${ac_make}_set=no fi rm -f conftestmake])dnl if eval "test \"`echo '$ac_cv_prog_make_'${ac_make}_set`\" = yes"; then AC_MSG_RESULT(yes) SET_MAKE= else AC_MSG_RESULT(no) SET_MAKE="MAKE=${MAKE-make}" fi AC_SUBST([SET_MAKE])dnl ]) AC_DEFUN(AC_PROG_RANLIB, [AC_CHECK_PROG(RANLIB, ranlib, ranlib, :)]) dnl Check for mawk first since it's generally faster. AC_DEFUN(AC_PROG_AWK, [AC_CHECK_PROGS(AWK, mawk gawk nawk awk, )]) AC_DEFUN(AC_PROG_YACC, [AC_CHECK_PROGS(YACC, 'bison -y' byacc, yacc)]) AC_DEFUN(AC_PROG_CPP, [AC_MSG_CHECKING(how to run the C preprocessor) # On Suns, sometimes $CPP names a directory. if test -n "$CPP" && test -d "$CPP"; then CPP= fi if test -z "$CPP"; then AC_CACHE_VAL(ac_cv_prog_CPP, [ # This must be in double quotes, not single quotes, because CPP may get # substituted into the Makefile and "${CC-cc}" will confuse make. CPP="${CC-cc} -E" if test -n "$GCC"; then dnl This is already part of AC_PROG_CC. dnl # Use the same optimization flags than for CC, because some things may dnl # depend upon __OPTIMIZE__. dnl CPP="$CPP -O" # Suppress warning messages. dnl # When using gcc -traditional on machines that have , dnl # the "-Dconst=" from AC_C_CONST and the "#define const __const" from dnl # generate a warning. Unless suppressed, this warning dnl # causes later tests using AC_TRY_CPP to fail. CPP="$CPP -w" fi # On the NeXT, cc -E runs the code through the compiler's parser, # not just through cpp. On NeXTstep 3.1 the same holds for /lib/cpp; use # "cc -E -traditional-cpp" instead. dnl Use a header file that comes with gcc, so configuring glibc dnl with a fresh cross-compiler works. AC_TRY_CPP([#include Syntax Error], ac_have_cpp=1) if test -z "$ac_have_cpp"; then CPP="${CC-cc} -E -traditional-cpp" AC_TRY_CPP([#include Syntax Error], ac_have_cpp=1) if test -n "$ac_have_cpp"; then CC="${CC-cc} -traditional-cpp" else CPP="${CC-cc} -nologo -E" AC_TRY_CPP([#include Syntax Error], ac_have_cpp=1) if test -n "$ac_have_cpp"; then CC="${CC-cc} -nologo" else CPP=/lib/cpp fi fi fi ac_cv_prog_CC="$CC" ac_cv_prog_CPP="$CPP"])dnl CPP="$ac_cv_prog_CPP" else ac_cv_prog_CPP="$CPP" fi AC_MSG_RESULT($CPP) AC_SUBST(CPP)dnl ]) AC_DEFUN(AC_PROG_CXXCPP, [AC_MSG_CHECKING(how to run the C++ preprocessor) if test -z "$CXXCPP"; then AC_CACHE_VAL(ac_cv_prog_CXXCPP, [AC_LANG_SAVE[]dnl AC_LANG_CPLUSPLUS[]dnl CXXCPP="${CXX-g++} -E" AC_TRY_CPP([#include ], , CXXCPP=/lib/cpp) ac_cv_prog_CXXCPP="$CXXCPP" AC_LANG_RESTORE[]dnl fi])dnl CXXCPP="$ac_cv_prog_CXXCPP" AC_MSG_RESULT($CXXCPP) AC_SUBST(CXXCPP)dnl ]) dnl Require finding the C or C++ preprocessor, whichever is the dnl current language. AC_DEFUN(AC_REQUIRE_CPP, [ifelse(AC_LANG, C, [AC_REQUIRE([AC_PROG_CPP])], [AC_REQUIRE([AC_PROG_CXXCPP])])]) AC_DEFUN(AC_PROG_LEX, [AC_CHECK_PROG(LEX, flex, flex, lex) if test -z "$LEXLIB" then case "$LEX" in flex*) ac_lib=fl ;; *) ac_lib=l ;; esac AC_CHECK_LIB($ac_lib, yywrap, LEXLIB="-l$ac_lib") fi AC_SUBST(LEXLIB)]) dnl Check if lex declares yytext as a char * by default, not a char[]. undefine([AC_DECL_YYTEXT]) AC_DEFUN(AC_DECL_YYTEXT, [AC_REQUIRE_CPP()dnl AC_REQUIRE([AC_PROG_LEX])dnl AC_CACHE_CHECK(lex output file root, ac_cv_prog_lex_root, [# The minimal lex program is just a single line: %%. But some broken lexes # (Solaris, I think it was) want two %% lines, so accommodate them. echo '%% %%' | $LEX if test -f lex.yy.c; then ac_cv_prog_lex_root=lex.yy elif test -f lexyy.c; then ac_cv_prog_lex_root=lexyy else AC_MSG_ERROR(cannot find output from $LEX; giving up) fi]) LEX_OUTPUT_ROOT=$ac_cv_prog_lex_root AC_SUBST(LEX_OUTPUT_ROOT)dnl AC_CACHE_CHECK(whether yytext is a pointer, ac_cv_prog_lex_yytext_pointer, [# POSIX says lex can declare yytext either as a pointer or an array; the # default is implementation-dependent. Figure out which it is, since # not all implementations provide the %pointer and %array declarations. ac_cv_prog_lex_yytext_pointer=no echo 'extern char *yytext;' >>$LEX_OUTPUT_ROOT.c ac_save_LIBS="$LIBS" LIBS="$LIBS $LEXLIB" AC_TRY_LINK(`cat $LEX_OUTPUT_ROOT.c`, , ac_cv_prog_lex_yytext_pointer=yes) LIBS="$ac_save_LIBS" rm -f "${LEX_OUTPUT_ROOT}.c" ]) if test $ac_cv_prog_lex_yytext_pointer = yes; then AC_DEFINE(YYTEXT_POINTER) fi ]) AC_DEFUN(AC_PROG_INSTALL, [AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl # Find a good install program. We prefer a C program (faster), # so one script is as good as another. But avoid the broken or # incompatible versions: # SysV /etc/install, /usr/sbin/install # SunOS /usr/etc/install # IRIX /sbin/install # AIX /bin/install # AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag # AFS /usr/afsws/bin/install, which mishandles nonexistent args # SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff" # ./install, which can be erroneously created by make from ./install.sh. AC_MSG_CHECKING(for a BSD compatible install) if test -z "$INSTALL"; then AC_CACHE_VAL(ac_cv_path_install, [ IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS=":" for ac_dir in $PATH; do # Account for people who put trailing slashes in PATH elements. case "$ac_dir/" in /|./|.//|/etc/*|/usr/sbin/*|/usr/etc/*|/sbin/*|/usr/afsws/bin/*|/usr/ucb/*) ;; *) # OSF1 and SCO ODT 3.0 have their own names for install. # Don't use installbsd from OSF since it installs stuff as root # by default. for ac_prog in ginstall scoinst install; do if test -f $ac_dir/$ac_prog; then if test $ac_prog = install && grep dspmsg $ac_dir/$ac_prog >/dev/null 2>&1; then # AIX install. It has an incompatible calling convention. : else if test $ac_prog = installbsd && grep src/bos $ac_dir/$ac_prog >/dev/null 2>&1; then # AIX installbsd doesn't work without option "-g". : else ac_cv_path_install="$ac_dir/$ac_prog -c" break 2 fi fi fi done ;; esac done IFS="$ac_save_IFS" ])dnl if test "${ac_cv_path_install+set}" = set; then INSTALL="$ac_cv_path_install" else # As a last resort, use the slow shell script. We don't cache a # path for INSTALL within a source directory, because that will # break other packages using the cache if that directory is # removed, or if the path is relative. INSTALL="$ac_install_sh" fi fi dnl We do special magic for INSTALL instead of AC_SUBST, to get dnl relative paths right. AC_MSG_RESULT($INSTALL) # Use test -z because SunOS4 sh mishandles braces in ${var-val}. # It thinks the first close brace ends the variable substitution. test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}' AC_SUBST(INSTALL_PROGRAM)dnl test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL_PROGRAM}' AC_SUBST(INSTALL_SCRIPT)dnl test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644' AC_SUBST(INSTALL_DATA)dnl ]) AC_DEFUN(AC_PROG_LN_S, [AC_MSG_CHECKING(whether ln -s works) AC_CACHE_VAL(ac_cv_prog_LN_S, [rm -f conftestdata if ln -s X conftestdata 2>/dev/null then rm -f conftestdata ac_cv_prog_LN_S="ln -s" else ac_cv_prog_LN_S=ln fi])dnl LN_S="$ac_cv_prog_LN_S" if test "$ac_cv_prog_LN_S" = "ln -s"; then AC_MSG_RESULT(yes) else AC_MSG_RESULT(no) fi AC_SUBST(LN_S)dnl ]) define(AC_RSH, [errprint(__file__:__line__: [$0] has been removed; replace it with equivalent code )m4exit(4)]) dnl ### Checks for header files AC_DEFUN(AC_HEADER_STDC, [AC_REQUIRE_CPP()dnl AC_CACHE_CHECK(for ANSI C header files, ac_cv_header_stdc, [AC_TRY_CPP([#include #include #include #include ], ac_cv_header_stdc=yes, ac_cv_header_stdc=no) if test $ac_cv_header_stdc = yes; then # SunOS 4.x string.h does not declare mem*, contrary to ANSI. AC_EGREP_HEADER(memchr, string.h, , ac_cv_header_stdc=no) fi if test $ac_cv_header_stdc = yes; then # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI. AC_EGREP_HEADER(free, stdlib.h, , ac_cv_header_stdc=no) fi if test $ac_cv_header_stdc = yes; then # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi. AC_TRY_RUN([#include #define ISLOWER(c) ('a' <= (c) && (c) <= 'z') #define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c)) #define XOR(e, f) (((e) && !(f)) || (!(e) && (f))) int main () { int i; for (i = 0; i < 256; i++) if (XOR (islower (i), ISLOWER (i)) || toupper (i) != TOUPPER (i)) exit(2); exit (0); } ], , ac_cv_header_stdc=no, :) fi]) if test $ac_cv_header_stdc = yes; then AC_DEFINE(STDC_HEADERS) fi ]) AC_DEFUN(AC_UNISTD_H, [AC_OBSOLETE([$0], [; instead use AC_CHECK_HEADERS(unistd.h)])dnl AC_CHECK_HEADER(unistd.h, AC_DEFINE(HAVE_UNISTD_H))]) AC_DEFUN(AC_USG, [AC_OBSOLETE([$0], [; instead use AC_CHECK_HEADERS(string.h) and HAVE_STRING_H])dnl AC_MSG_CHECKING([for BSD string and memory functions]) AC_TRY_LINK([#include ], [rindex(0, 0); bzero(0, 0);], [AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no); AC_DEFINE(USG)])]) dnl If memchr and the like aren't declared in , include . dnl To avoid problems, don't check for gcc2 built-ins. AC_DEFUN(AC_MEMORY_H, [AC_OBSOLETE([$0], [; instead use AC_CHECK_HEADERS(memory.h) and HAVE_MEMORY_H])dnl AC_MSG_CHECKING(whether string.h declares mem functions) AC_EGREP_HEADER(memchr, string.h, ac_found=yes, ac_found=no) AC_MSG_RESULT($ac_found) if test $ac_found = no; then AC_CHECK_HEADER(memory.h, [AC_DEFINE(NEED_MEMORY_H)]) fi ]) AC_DEFUN(AC_HEADER_MAJOR, [AC_CACHE_CHECK(whether sys/types.h defines makedev, ac_cv_header_sys_types_h_makedev, [AC_TRY_LINK([#include ], [return makedev(0, 0);], ac_cv_header_sys_types_h_makedev=yes, ac_cv_header_sys_types_h_makedev=no) ]) if test $ac_cv_header_sys_types_h_makedev = no; then AC_CHECK_HEADER(sys/mkdev.h, [AC_DEFINE(MAJOR_IN_MKDEV)]) if test $ac_cv_header_sys_mkdev_h = no; then AC_CHECK_HEADER(sys/sysmacros.h, [AC_DEFINE(MAJOR_IN_SYSMACROS)]) fi fi ]) AC_DEFUN(AC_HEADER_DIRENT, [ac_header_dirent=no AC_CHECK_HEADERS_DIRENT(dirent.h sys/ndir.h sys/dir.h ndir.h, [ac_header_dirent=$ac_hdr; break]) # Two versions of opendir et al. are in -ldir and -lx on SCO Xenix. if test $ac_header_dirent = dirent.h; then AC_CHECK_LIB(dir, opendir, LIBS="$LIBS -ldir") else AC_CHECK_LIB(x, opendir, LIBS="$LIBS -lx") fi ]) dnl Like AC_CHECK_HEADER, except also make sure that HEADER-FILE dnl defines the type `DIR'. dirent.h on NextStep 3.2 doesn't. dnl AC_CHECK_HEADER_DIRENT(HEADER-FILE, ACTION-IF-FOUND) AC_DEFUN(AC_CHECK_HEADER_DIRENT, [ac_safe=`echo "$1" | sed 'y%./+-%__p_%'` AC_MSG_CHECKING([for $1 that defines DIR]) AC_CACHE_VAL(ac_cv_header_dirent_$ac_safe, [AC_TRY_COMPILE([#include #include <$1>], [DIR *dirp = 0;], eval "ac_cv_header_dirent_$ac_safe=yes", eval "ac_cv_header_dirent_$ac_safe=no")])dnl if eval "test \"`echo '$ac_cv_header_dirent_'$ac_safe`\" = yes"; then AC_MSG_RESULT(yes) $2 else AC_MSG_RESULT(no) fi ]) dnl Like AC_CHECK_HEADERS, except succeed only for a HEADER-FILE that dnl defines `DIR'. dnl AC_CHECK_HEADERS_DIRENT(HEADER-FILE... [, ACTION]) define(AC_CHECK_HEADERS_DIRENT, [for ac_hdr in $1 do AC_CHECK_HEADER_DIRENT($ac_hdr, [changequote(, )dnl ac_tr_hdr=HAVE_`echo $ac_hdr | sed 'y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%'` changequote([, ])dnl AC_DEFINE_UNQUOTED($ac_tr_hdr) $2])dnl done]) AC_DEFUN(AC_DIR_HEADER, [AC_OBSOLETE([$0], [; instead use AC_HEADER_DIRENT])dnl ac_header_dirent=no for ac_hdr in dirent.h sys/ndir.h sys/dir.h ndir.h; do AC_CHECK_HEADER_DIRENT($ac_hdr, [ac_header_dirent=$ac_hdr; break]) done case "$ac_header_dirent" in dirent.h) AC_DEFINE(DIRENT) ;; sys/ndir.h) AC_DEFINE(SYSNDIR) ;; sys/dir.h) AC_DEFINE(SYSDIR) ;; ndir.h) AC_DEFINE(NDIR) ;; esac AC_CACHE_CHECK(whether closedir returns void, ac_cv_func_closedir_void, [AC_TRY_RUN([#include #include <$ac_header_dirent> int closedir(); int main() { exit(closedir(opendir(".")) != 0); }], ac_cv_func_closedir_void=no, ac_cv_func_closedir_void=yes, ac_cv_func_closedir_void=yes)]) if test $ac_cv_func_closedir_void = yes; then AC_DEFINE(VOID_CLOSEDIR) fi ]) AC_DEFUN(AC_HEADER_STAT, [AC_CACHE_CHECK(whether stat file-mode macros are broken, ac_cv_header_stat_broken, [AC_EGREP_CPP([You lose], [#include #include #if defined(S_ISBLK) && defined(S_IFDIR) # if S_ISBLK (S_IFDIR) You lose. # endif #endif #if defined(S_ISBLK) && defined(S_IFCHR) # if S_ISBLK (S_IFCHR) You lose. # endif #endif #if defined(S_ISLNK) && defined(S_IFREG) # if S_ISLNK (S_IFREG) You lose. # endif #endif #if defined(S_ISSOCK) && defined(S_IFREG) # if S_ISSOCK (S_IFREG) You lose. # endif #endif ], ac_cv_header_stat_broken=yes, ac_cv_header_stat_broken=no)]) if test $ac_cv_header_stat_broken = yes; then AC_DEFINE(STAT_MACROS_BROKEN) fi ]) AC_DEFUN(AC_DECL_SYS_SIGLIST, [AC_CACHE_CHECK([for sys_siglist declaration in signal.h or unistd.h], ac_cv_decl_sys_siglist, [AC_TRY_COMPILE([#include #include /* NetBSD declares sys_siglist in unistd.h. */ #ifdef HAVE_UNISTD_H #include #endif], [char *msg = *(sys_siglist + 1);], ac_cv_decl_sys_siglist=yes, ac_cv_decl_sys_siglist=no)]) if test $ac_cv_decl_sys_siglist = yes; then AC_DEFINE(SYS_SIGLIST_DECLARED) fi ]) AC_DEFUN(AC_HEADER_SYS_WAIT, [AC_CACHE_CHECK([for sys/wait.h that is POSIX.1 compatible], ac_cv_header_sys_wait_h, [AC_TRY_COMPILE([#include #include #ifndef WEXITSTATUS #define WEXITSTATUS(stat_val) ((unsigned)(stat_val) >> 8) #endif #ifndef WIFEXITED #define WIFEXITED(stat_val) (((stat_val) & 255) == 0) #endif], [int s; wait (&s); s = WIFEXITED (s) ? WEXITSTATUS (s) : 1;], ac_cv_header_sys_wait_h=yes, ac_cv_header_sys_wait_h=no)]) if test $ac_cv_header_sys_wait_h = yes; then AC_DEFINE(HAVE_SYS_WAIT_H) fi ]) dnl ### Checks for typedefs AC_DEFUN(AC_TYPE_GETGROUPS, [AC_REQUIRE([AC_TYPE_UID_T])dnl AC_CACHE_CHECK(type of array argument to getgroups, ac_cv_type_getgroups, [AC_TRY_RUN( changequote(<<, >>)dnl << /* Thanks to Mike Rendell for this test. */ #include #define NGID 256 #undef MAX #define MAX(x, y) ((x) > (y) ? (x) : (y)) int main() { gid_t gidset[NGID]; int i, n; union { gid_t gval; long lval; } val; val.lval = -1; for (i = 0; i < NGID; i++) gidset[i] = val.gval; n = getgroups (sizeof (gidset) / MAX (sizeof (int), sizeof (gid_t)) - 1, gidset); /* Exit non-zero if getgroups seems to require an array of ints. This happens when gid_t is short but getgroups modifies an array of ints. */ exit ((n > 0 && gidset[n] != val.gval) ? 1 : 0); } >>, changequote([, ])dnl ac_cv_type_getgroups=gid_t, ac_cv_type_getgroups=int, ac_cv_type_getgroups=cross) if test $ac_cv_type_getgroups = cross; then dnl When we can't run the test program (we are cross compiling), presume dnl that has either an accurate prototype for getgroups or none. dnl Old systems without prototypes probably use int. AC_EGREP_HEADER([getgroups.*int.*gid_t], unistd.h, ac_cv_type_getgroups=gid_t, ac_cv_type_getgroups=int) fi]) AC_DEFINE_UNQUOTED(GETGROUPS_T, $ac_cv_type_getgroups) ]) AC_DEFUN(AC_TYPE_UID_T, [AC_CACHE_CHECK(for uid_t in sys/types.h, ac_cv_type_uid_t, [AC_EGREP_HEADER(uid_t, sys/types.h, ac_cv_type_uid_t=yes, ac_cv_type_uid_t=no)]) if test $ac_cv_type_uid_t = no; then AC_DEFINE(uid_t, int) AC_DEFINE(gid_t, int) fi ]) AC_DEFUN(AC_TYPE_SIZE_T, [AC_CHECK_TYPE(size_t, unsigned)]) AC_DEFUN(AC_TYPE_PID_T, [AC_CHECK_TYPE(pid_t, int)]) AC_DEFUN(AC_TYPE_OFF_T, [AC_CHECK_TYPE(off_t, long)]) AC_DEFUN(AC_TYPE_MODE_T, [AC_CHECK_TYPE(mode_t, int)]) dnl Note that identifiers starting with SIG are reserved by ANSI C. AC_DEFUN(AC_TYPE_SIGNAL, [AC_CACHE_CHECK([return type of signal handlers], ac_cv_type_signal, [AC_TRY_COMPILE([#include #include #ifdef signal #undef signal #endif extern #ifdef __cplusplus "C" void (*signal (int, void (*)(int)))(int); #else void (*signal ()) (); #endif ], [int i;], ac_cv_type_signal=void, ac_cv_type_signal=int)]) AC_DEFINE_UNQUOTED(RETSIGTYPE, $ac_cv_type_signal) ]) dnl ### Checks for functions AC_DEFUN(AC_FUNC_CLOSEDIR_VOID, [AC_REQUIRE([AC_HEADER_DIRENT])dnl AC_CACHE_CHECK(whether closedir returns void, ac_cv_func_closedir_void, [AC_TRY_RUN([#include #include <$ac_header_dirent> int closedir(); int main() { exit(closedir(opendir(".")) != 0); }], ac_cv_func_closedir_void=no, ac_cv_func_closedir_void=yes, ac_cv_func_closedir_void=yes)]) if test $ac_cv_func_closedir_void = yes; then AC_DEFINE(CLOSEDIR_VOID) fi ]) AC_DEFUN(AC_FUNC_FNMATCH, [AC_CACHE_CHECK(for working fnmatch, ac_cv_func_fnmatch_works, # Some versions of Solaris or SCO have a broken fnmatch function. # So we run a test program. If we are cross-compiling, take no chance. # Thanks to John Oleynick and Franc,ois Pinard for this test. [AC_TRY_RUN([int main() { exit (fnmatch ("a*", "abc", 0) != 0); }], ac_cv_func_fnmatch_works=yes, ac_cv_func_fnmatch_works=no, ac_cv_func_fnmatch_works=no)]) if test $ac_cv_func_fnmatch_works = yes; then AC_DEFINE(HAVE_FNMATCH) fi ]) AC_DEFUN(AC_FUNC_MMAP, [AC_CHECK_HEADERS(unistd.h) AC_CHECK_FUNCS(getpagesize) AC_CACHE_CHECK(for working mmap, ac_cv_func_mmap_fixed_mapped, [AC_TRY_RUN([ /* Thanks to Mike Haertel and Jim Avera for this test. Here is a matrix of mmap possibilities: mmap private not fixed mmap private fixed at somewhere currently unmapped mmap private fixed at somewhere already mapped mmap shared not fixed mmap shared fixed at somewhere currently unmapped mmap shared fixed at somewhere already mapped For private mappings, we should verify that changes cannot be read() back from the file, nor mmap's back from the file at a different address. (There have been systems where private was not correctly implemented like the infamous i386 svr4.0, and systems where the VM page cache was not coherent with the filesystem buffer cache like early versions of FreeBSD and possibly contemporary NetBSD.) For shared mappings, we should conversely verify that changes get propogated back to all the places they're supposed to be. Grep wants private fixed already mapped. The main things grep needs to know about mmap are: * does it exist and is it safe to write into the mmap'd area * how to use it (BSD variants) */ #include #include #include /* This mess was copied from the GNU getpagesize.h. */ #ifndef HAVE_GETPAGESIZE # ifdef HAVE_UNISTD_H # include # endif /* Assume that all systems that can run configure have sys/param.h. */ # ifndef HAVE_SYS_PARAM_H # define HAVE_SYS_PARAM_H 1 # endif # ifdef _SC_PAGESIZE # define getpagesize() sysconf(_SC_PAGESIZE) # else /* no _SC_PAGESIZE */ # ifdef HAVE_SYS_PARAM_H # include # ifdef EXEC_PAGESIZE # define getpagesize() EXEC_PAGESIZE # else /* no EXEC_PAGESIZE */ # ifdef NBPG # define getpagesize() NBPG * CLSIZE # ifndef CLSIZE # define CLSIZE 1 # endif /* no CLSIZE */ # else /* no NBPG */ # ifdef NBPC # define getpagesize() NBPC # else /* no NBPC */ # ifdef PAGESIZE # define getpagesize() PAGESIZE # endif /* PAGESIZE */ # endif /* no NBPC */ # endif /* no NBPG */ # endif /* no EXEC_PAGESIZE */ # else /* no HAVE_SYS_PARAM_H */ # define getpagesize() 8192 /* punt totally */ # endif /* no HAVE_SYS_PARAM_H */ # endif /* no _SC_PAGESIZE */ #endif /* no HAVE_GETPAGESIZE */ #ifdef __cplusplus extern "C" { void *malloc(unsigned); } #else char *malloc(); #endif int main() { char *data, *data2, *data3; int i, pagesize; int fd; pagesize = getpagesize(); /* * First, make a file with some known garbage in it. */ data = malloc(pagesize); if (!data) exit(1); for (i = 0; i < pagesize; ++i) *(data + i) = rand(); umask(0); fd = creat("conftestmmap", 0600); if (fd < 0) exit(1); if (write(fd, data, pagesize) != pagesize) exit(1); close(fd); /* * Next, try to mmap the file at a fixed address which * already has something else allocated at it. If we can, * also make sure that we see the same garbage. */ fd = open("conftestmmap", O_RDWR); if (fd < 0) exit(1); data2 = malloc(2 * pagesize); if (!data2) exit(1); data2 += (pagesize - ((int) data2 & (pagesize - 1))) & (pagesize - 1); if (data2 != mmap(data2, pagesize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_FIXED, fd, 0L)) exit(1); for (i = 0; i < pagesize; ++i) if (*(data + i) != *(data2 + i)) exit(1); /* * Finally, make sure that changes to the mapped area * do not percolate back to the file as seen by read(). * (This is a bug on some variants of i386 svr4.0.) */ for (i = 0; i < pagesize; ++i) *(data2 + i) = *(data2 + i) + 1; data3 = malloc(pagesize); if (!data3) exit(1); if (read(fd, data3, pagesize) != pagesize) exit(1); for (i = 0; i < pagesize; ++i) if (*(data + i) != *(data3 + i)) exit(1); close(fd); unlink("conftestmmap"); exit(0); } ], ac_cv_func_mmap_fixed_mapped=yes, ac_cv_func_mmap_fixed_mapped=no, ac_cv_func_mmap_fixed_mapped=no)]) if test $ac_cv_func_mmap_fixed_mapped = yes; then AC_DEFINE(HAVE_MMAP) fi ]) AC_DEFUN(AC_FUNC_GETPGRP, [AC_CACHE_CHECK(whether getpgrp takes no argument, ac_cv_func_getpgrp_void, [AC_TRY_RUN([ /* * If this system has a BSD-style getpgrp(), * which takes a pid argument, exit unsuccessfully. * * Snarfed from Chet Ramey's bash pgrp.c test program */ #include #include int pid; int pg1, pg2, pg3, pg4; int ng, np, s, child; int main() { pid = getpid(); pg1 = getpgrp(0); pg2 = getpgrp(); pg3 = getpgrp(pid); pg4 = getpgrp(1); /* * If all of these values are the same, it's pretty sure that * we're on a system that ignores getpgrp's first argument. */ if (pg2 == pg4 && pg1 == pg3 && pg2 == pg3) exit(0); child = fork(); if (child < 0) exit(1); else if (child == 0) { np = getpid(); /* * If this is Sys V, this will not work; pgrp will be * set to np because setpgrp just changes a pgrp to be * the same as the pid. */ setpgrp(np, pg1); ng = getpgrp(0); /* Same result for Sys V and BSD */ if (ng == pg1) { exit(1); } else { exit(0); } } else { wait(&s); exit(s>>8); } } ], ac_cv_func_getpgrp_void=yes, ac_cv_func_getpgrp_void=no, AC_MSG_ERROR(cannot check getpgrp if cross compiling)) ]) if test $ac_cv_func_getpgrp_void = yes; then AC_DEFINE(GETPGRP_VOID) fi ]) AC_DEFUN(AC_FUNC_SETPGRP, [AC_CACHE_CHECK(whether setpgrp takes no argument, ac_cv_func_setpgrp_void, AC_TRY_RUN([ #ifdef HAVE_UNISTD_H #include #endif /* * If this system has a BSD-style setpgrp, which takes arguments, exit * successfully. */ int main() { if (setpgrp(1,1) == -1) exit(0); else exit(1); } ], ac_cv_func_setpgrp_void=no, ac_cv_func_setpgrp_void=yes, AC_MSG_ERROR(cannot check setpgrp if cross compiling)) ) if test $ac_cv_func_setpgrp_void = yes; then AC_DEFINE(SETPGRP_VOID) fi ]) AC_DEFUN(AC_FUNC_VPRINTF, [AC_CHECK_FUNC(vprintf, AC_DEFINE(HAVE_VPRINTF)) if test "$ac_cv_func_vprintf" != yes; then AC_CHECK_FUNC(_doprnt, AC_DEFINE(HAVE_DOPRNT)) fi ]) AC_DEFUN(AC_FUNC_VFORK, [AC_REQUIRE([AC_TYPE_PID_T])dnl AC_CHECK_HEADER(vfork.h, AC_DEFINE(HAVE_VFORK_H)) AC_CACHE_CHECK(for working vfork, ac_cv_func_vfork_works, [AC_TRY_RUN([/* Thanks to Paul Eggert for this test. */ #include #include #include #ifdef HAVE_UNISTD_H #include #endif #ifdef HAVE_VFORK_H #include #endif /* On some sparc systems, changes by the child to local and incoming argument registers are propagated back to the parent. The compiler is told about this with #include , but some compilers (e.g. gcc -O) don't grok . Test for this by using a static variable whose address is put into a register that is clobbered by the vfork. */ static int #ifdef __cplusplus sparc_address_test (int arg) #else sparc_address_test (arg) int arg; #endif { static pid_t child; if (!child) { child = vfork (); if (child < 0) { perror ("vfork"); _exit(2); } if (!child) { arg = getpid(); write(-1, "", 0); _exit (arg); } } } int main() { pid_t parent = getpid (); pid_t child; ((int (*)()) sparc_address_test) (); child = vfork (); if (child == 0) { /* Here is another test for sparc vfork register problems. This test uses lots of local variables, at least as many local variables as main has allocated so far including compiler temporaries. 4 locals are enough for gcc 1.40.3 on a Solaris 4.1.3 sparc, but we use 8 to be safe. A buggy compiler should reuse the register of parent for one of the local variables, since it will think that parent can't possibly be used any more in this routine. Assigning to the local variable will thus munge parent in the parent process. */ pid_t p = getpid(), p1 = getpid(), p2 = getpid(), p3 = getpid(), p4 = getpid(), p5 = getpid(), p6 = getpid(), p7 = getpid(); /* Convince the compiler that p..p7 are live; otherwise, it might use the same hardware register for all 8 local variables. */ if (p != p1 || p != p2 || p != p3 || p != p4 || p != p5 || p != p6 || p != p7) _exit(1); /* On some systems (e.g. IRIX 3.3), vfork doesn't separate parent from child file descriptors. If the child closes a descriptor before it execs or exits, this munges the parent's descriptor as well. Test for this by closing stdout in the child. */ _exit(close(fileno(stdout)) != 0); } else { int status; struct stat st; while (wait(&status) != child) ; exit( /* Was there some problem with vforking? */ child < 0 /* Did the child fail? (This shouldn't happen.) */ || status /* Did the vfork/compiler bug occur? */ || parent != getpid() /* Did the file descriptor bug occur? */ || fstat(fileno(stdout), &st) != 0 ); } }], ac_cv_func_vfork_works=yes, ac_cv_func_vfork_works=no, AC_CHECK_FUNC(vfork) ac_cv_func_vfork_works=$ac_cv_func_vfork)]) if test $ac_cv_func_vfork_works = no; then AC_DEFINE(vfork, fork) fi ]) AC_DEFUN(AC_FUNC_WAIT3, [AC_CACHE_CHECK(for wait3 that fills in rusage, ac_cv_func_wait3_rusage, [AC_TRY_RUN([#include #include #include #include /* HP-UX has wait3 but does not fill in rusage at all. */ int main() { struct rusage r; int i; /* Use a field that we can force nonzero -- voluntary context switches. For systems like NeXT and OSF/1 that don't set it, also use the system CPU time. And page faults (I/O) for Linux. */ r.ru_nvcsw = 0; r.ru_stime.tv_sec = 0; r.ru_stime.tv_usec = 0; r.ru_majflt = r.ru_minflt = 0; switch (fork()) { case 0: /* Child. */ sleep(1); /* Give up the CPU. */ _exit(0); case -1: _exit(0); /* What can we do? */ default: /* Parent. */ wait3(&i, 0, &r); sleep(2); /* Avoid "text file busy" from rm on fast HP-UX machines. */ exit(r.ru_nvcsw == 0 && r.ru_majflt == 0 && r.ru_minflt == 0 && r.ru_stime.tv_sec == 0 && r.ru_stime.tv_usec == 0); } }], ac_cv_func_wait3_rusage=yes, ac_cv_func_wait3_rusage=no, ac_cv_func_wait3_rusage=no)]) if test $ac_cv_func_wait3_rusage = yes; then AC_DEFINE(HAVE_WAIT3) fi ]) AC_DEFUN(AC_FUNC_ALLOCA, [AC_REQUIRE_CPP()dnl Set CPP; we run AC_EGREP_CPP conditionally. # The Ultrix 4.2 mips builtin alloca declared by alloca.h only works # for constant arguments. Useless! AC_CACHE_CHECK([for working alloca.h], ac_cv_header_alloca_h, [AC_TRY_LINK([#include ], [char *p = alloca(2 * sizeof(int));], ac_cv_header_alloca_h=yes, ac_cv_header_alloca_h=no)]) if test $ac_cv_header_alloca_h = yes; then AC_DEFINE(HAVE_ALLOCA_H) fi AC_CACHE_CHECK([for alloca], ac_cv_func_alloca_works, [AC_TRY_LINK([ #ifdef __GNUC__ # define alloca __builtin_alloca #else # ifdef _MSC_VER # include # define alloca _alloca # else # if HAVE_ALLOCA_H # include # else # ifdef _AIX #pragma alloca # else # ifndef alloca /* predefined by HP cc +Olibcalls */ char *alloca (); # endif # endif # endif # endif #endif ], [char *p = (char *) alloca(1);], ac_cv_func_alloca_works=yes, ac_cv_func_alloca_works=no)]) if test $ac_cv_func_alloca_works = yes; then AC_DEFINE(HAVE_ALLOCA) fi if test $ac_cv_func_alloca_works = no; then # The SVR3 libPW and SVR4 libucb both contain incompatible functions # that cause trouble. Some versions do not even contain alloca or # contain a buggy version. If you still want to use their alloca, # use ar to extract alloca.o from them instead of compiling alloca.c. ALLOCA=alloca.${ac_objext} AC_DEFINE(C_ALLOCA) AC_CACHE_CHECK(whether alloca needs Cray hooks, ac_cv_os_cray, [AC_EGREP_CPP(webecray, [#if defined(CRAY) && ! defined(CRAY2) webecray #else wenotbecray #endif ], ac_cv_os_cray=yes, ac_cv_os_cray=no)]) if test $ac_cv_os_cray = yes; then for ac_func in _getb67 GETB67 getb67; do AC_CHECK_FUNC($ac_func, [AC_DEFINE_UNQUOTED(CRAY_STACKSEG_END, $ac_func) break]) done fi AC_CACHE_CHECK(stack direction for C alloca, ac_cv_c_stack_direction, [AC_TRY_RUN([find_stack_direction () { static char *addr = 0; auto char dummy; if (addr == 0) { addr = &dummy; return find_stack_direction (); } else return (&dummy > addr) ? 1 : -1; } int main () { exit (find_stack_direction() < 0); }], ac_cv_c_stack_direction=1, ac_cv_c_stack_direction=-1, ac_cv_c_stack_direction=0)]) AC_DEFINE_UNQUOTED(STACK_DIRECTION, $ac_cv_c_stack_direction) fi AC_SUBST(ALLOCA)dnl ]) AC_DEFUN(AC_FUNC_GETLOADAVG, [ac_have_func=no # yes means we've found a way to get the load average. # Some systems with -lutil have (and need) -lkvm as well, some do not. # On Solaris, -lkvm requires nlist from -lelf, so check that first # to get the right answer into the cache. AC_CHECK_LIB(elf, elf_begin, LIBS="-lelf $LIBS") AC_CHECK_LIB(kvm, kvm_open, LIBS="-lkvm $LIBS") # Check for the 4.4BSD definition of getloadavg. AC_CHECK_LIB(util, getloadavg, [LIBS="-lutil $LIBS" ac_have_func=yes ac_cv_func_getloadavg_setgid=yes]) if test $ac_have_func = no; then # There is a commonly available library for RS/6000 AIX. # Since it is not a standard part of AIX, it might be installed locally. ac_getloadavg_LIBS="$LIBS"; LIBS="-L/usr/local/lib $LIBS" AC_CHECK_LIB(getloadavg, getloadavg, LIBS="-lgetloadavg $LIBS", LIBS="$ac_getloadavg_LIBS") fi # Make sure it is really in the library, if we think we found it. AC_REPLACE_FUNCS(getloadavg) if test $ac_cv_func_getloadavg = yes; then AC_DEFINE(HAVE_GETLOADAVG) ac_have_func=yes else # Figure out what our getloadavg.c needs. ac_have_func=no AC_CHECK_HEADER(sys/dg_sys_info.h, [ac_have_func=yes; AC_DEFINE(DGUX) AC_CHECK_LIB(dgc, dg_sys_info)]) # We cannot check for , because Solaris 2 does not use dwarf (it # uses stabs), but it is still SVR4. We cannot check for because # Irix 4.0.5F has the header but not the library. if test $ac_have_func = no && test $ac_cv_lib_elf_elf_begin = yes; then ac_have_func=yes; AC_DEFINE(SVR4) fi if test $ac_have_func = no; then AC_CHECK_HEADER(inq_stats/cpustats.h, [ac_have_func=yes; AC_DEFINE(UMAX) AC_DEFINE(UMAX4_3)]) fi if test $ac_have_func = no; then AC_CHECK_HEADER(sys/cpustats.h, [ac_have_func=yes; AC_DEFINE(UMAX)]) fi if test $ac_have_func = no; then AC_CHECK_HEADERS(mach/mach.h) fi AC_CHECK_HEADER(nlist.h, [AC_DEFINE(NLIST_STRUCT) AC_CACHE_CHECK([for n_un in struct nlist], ac_cv_struct_nlist_n_un, [AC_TRY_COMPILE([#include ], [struct nlist n; n.n_un.n_name = 0;], ac_cv_struct_nlist_n_un=yes, ac_cv_struct_nlist_n_un=no)]) if test $ac_cv_struct_nlist_n_un = yes; then AC_DEFINE(NLIST_NAME_UNION) fi ])dnl fi # Do not have getloadavg in system libraries. # Some definitions of getloadavg require that the program be installed setgid. dnl FIXME Don't hardwire the path of getloadavg.c in the top-level directory. AC_CACHE_CHECK(whether getloadavg requires setgid, ac_cv_func_getloadavg_setgid, [AC_EGREP_CPP([Yowza Am I SETGID yet], [#include "$srcdir/getloadavg.c" #ifdef LDAV_PRIVILEGED Yowza Am I SETGID yet #endif], ac_cv_func_getloadavg_setgid=yes, ac_cv_func_getloadavg_setgid=no)]) if test $ac_cv_func_getloadavg_setgid = yes; then NEED_SETGID=true; AC_DEFINE(GETLOADAVG_PRIVILEGED) else NEED_SETGID=false fi AC_SUBST(NEED_SETGID)dnl if test $ac_cv_func_getloadavg_setgid = yes; then AC_CACHE_CHECK(group of /dev/kmem, ac_cv_group_kmem, [changequote(, )dnl # On Solaris, /dev/kmem is a symlink. Get info on the real file. ac_ls_output=`ls -lgL /dev/kmem 2>/dev/null` # If we got an error (system does not support symlinks), try without -L. test -z "$ac_ls_output" && ac_ls_output=`ls -lg /dev/kmem` ac_cv_group_kmem=`echo $ac_ls_output \ | sed -ne 's/[ ][ ]*/ /g; s/^.[sSrwx-]* *[0-9]* *\([^0-9]*\) *.*/\1/; / /s/.* //;p;'` changequote([, ])dnl ]) KMEM_GROUP=$ac_cv_group_kmem fi AC_SUBST(KMEM_GROUP)dnl ]) AC_DEFUN(AC_FUNC_UTIME_NULL, [AC_CACHE_CHECK(whether utime accepts a null argument, ac_cv_func_utime_null, [rm -f conftestdata; > conftestdata # Sequent interprets utime(file, 0) to mean use start of epoch. Wrong. AC_TRY_RUN([#include #include int main() { struct stat s, t; exit(!(stat ("conftestdata", &s) == 0 && utime("conftestdata", (long *)0) == 0 && stat("conftestdata", &t) == 0 && t.st_mtime >= s.st_mtime && t.st_mtime - s.st_mtime < 120)); }], ac_cv_func_utime_null=yes, ac_cv_func_utime_null=no, ac_cv_func_utime_null=no) rm -f core]) if test $ac_cv_func_utime_null = yes; then AC_DEFINE(HAVE_UTIME_NULL) fi ]) AC_DEFUN(AC_FUNC_STRCOLL, [AC_CACHE_CHECK(for working strcoll, ac_cv_func_strcoll_works, [AC_TRY_RUN([#include int main () { exit (strcoll ("abc", "def") >= 0 || strcoll ("ABC", "DEF") >= 0 || strcoll ("123", "456") >= 0); }], ac_cv_func_strcoll_works=yes, ac_cv_func_strcoll_works=no, ac_cv_func_strcoll_works=no)]) if test $ac_cv_func_strcoll_works = yes; then AC_DEFINE(HAVE_STRCOLL) fi ]) AC_DEFUN(AC_FUNC_SETVBUF_REVERSED, [AC_CACHE_CHECK(whether setvbuf arguments are reversed, ac_cv_func_setvbuf_reversed, [AC_TRY_RUN([#include /* If setvbuf has the reversed format, exit 0. */ int main () { /* This call has the arguments reversed. A reversed system may check and see that the address of main is not _IOLBF, _IONBF, or _IOFBF, and return nonzero. */ if (setvbuf(stdout, _IOLBF, (char *) main, BUFSIZ) != 0) exit(1); putc('\r', stdout); exit(0); /* Non-reversed systems segv here. */ }], ac_cv_func_setvbuf_reversed=yes, ac_cv_func_setvbuf_reversed=no) rm -f core]) if test $ac_cv_func_setvbuf_reversed = yes; then AC_DEFINE(SETVBUF_REVERSED) fi ]) AC_DEFUN(AC_FUNC_GETMNTENT, [# getmntent is in -lsun on Irix 4, -lseq on Dynix/PTX, -lgen on Unixware. AC_CHECK_LIB(sun, getmntent, LIBS="-lsun $LIBS", [AC_CHECK_LIB(seq, getmntent, LIBS="-lseq $LIBS", [AC_CHECK_LIB(gen, getmntent, LIBS="-lgen $LIBS")])]) AC_CHECK_FUNC(getmntent, [AC_DEFINE(HAVE_GETMNTENT)])]) AC_DEFUN(AC_FUNC_STRFTIME, [AC_CHECK_FUNC(strftime, [AC_DEFINE(HAVE_STRFTIME)], [# strftime is in -lintl on SCO UNIX. AC_CHECK_LIB(intl, strftime, [AC_DEFINE(HAVE_STRFTIME) LIBS="-lintl $LIBS"])])]) AC_DEFUN(AC_FUNC_MEMCMP, [AC_CACHE_CHECK(for 8-bit clean memcmp, ac_cv_func_memcmp_clean, [AC_TRY_RUN([ int main() { char c0 = 0x40, c1 = 0x80, c2 = 0x81; exit(memcmp(&c0, &c2, 1) < 0 && memcmp(&c1, &c2, 1) < 0 ? 0 : 1); } ], ac_cv_func_memcmp_clean=yes, ac_cv_func_memcmp_clean=no, ac_cv_func_memcmp_clean=no)]) test $ac_cv_func_memcmp_clean = no && LIBOBJS="$LIBOBJS memcmp.${ac_objext}" AC_SUBST(LIBOBJS)dnl ]) AC_DEFUN(AC_FUNC_SELECT_ARGTYPES, [AC_MSG_CHECKING([types of arguments for select()]) AC_CACHE_VAL(ac_cv_func_select_arg234,dnl [AC_CACHE_VAL(ac_cv_func_select_arg1,dnl [AC_CACHE_VAL(ac_cv_func_select_arg5,dnl [for ac_cv_func_select_arg234 in 'fd_set *' 'int *' 'void *'; do for ac_cv_func_select_arg1 in 'int' 'size_t' 'unsigned long' 'unsigned'; do for ac_cv_func_select_arg5 in 'struct timeval *' 'const struct timeval *'; do AC_TRY_COMPILE(dnl [#ifdef HAVE_SYS_TYPES_H #include #endif #ifdef HAVE_SYS_TIME_H #include #endif #ifdef HAVE_SYS_SELECT_H #include #endif #ifdef HAVE_SYS_SOCKET_H #include #endif extern select ($ac_cv_func_select_arg1,$ac_cv_func_select_arg234,$ac_cv_func_select_arg234,$ac_cv_func_select_arg234,$ac_cv_func_select_arg5);],,dnl [ac_not_found=no ; break 3],ac_not_found=yes) done done done ])dnl AC_CACHE_VAL ])dnl AC_CACHE_VAL ])dnl AC_CACHE_VAL if test "$ac_not_found" = yes; then ac_cv_func_select_arg1=int ac_cv_func_select_arg234='int *' ac_cv_func_select_arg5='struct timeval *' fi AC_MSG_RESULT([$ac_cv_func_select_arg1,$ac_cv_func_select_arg234,$ac_cv_func_select_arg5]) AC_DEFINE_UNQUOTED(SELECT_TYPE_ARG1,$ac_cv_func_select_arg1) AC_DEFINE_UNQUOTED(SELECT_TYPE_ARG234,($ac_cv_func_select_arg234)) AC_DEFINE_UNQUOTED(SELECT_TYPE_ARG5,($ac_cv_func_select_arg5)) ]) dnl ### Checks for structure members AC_DEFUN(AC_HEADER_TIME, [AC_CACHE_CHECK([whether time.h and sys/time.h may both be included], ac_cv_header_time, [AC_TRY_COMPILE([#include #include #include ], [struct tm *tp;], ac_cv_header_time=yes, ac_cv_header_time=no)]) if test $ac_cv_header_time = yes; then AC_DEFINE(TIME_WITH_SYS_TIME) fi ]) AC_DEFUN(AC_STRUCT_TM, [AC_CACHE_CHECK([whether struct tm is in sys/time.h or time.h], ac_cv_struct_tm, [AC_TRY_COMPILE([#include #include ], [struct tm *tp; tp->tm_sec;], ac_cv_struct_tm=time.h, ac_cv_struct_tm=sys/time.h)]) if test $ac_cv_struct_tm = sys/time.h; then AC_DEFINE(TM_IN_SYS_TIME) fi ]) AC_DEFUN(AC_STRUCT_TIMEZONE, [AC_REQUIRE([AC_STRUCT_TM])dnl AC_CACHE_CHECK([for tm_zone in struct tm], ac_cv_struct_tm_zone, [AC_TRY_COMPILE([#include #include <$ac_cv_struct_tm>], [struct tm tm; tm.tm_zone;], ac_cv_struct_tm_zone=yes, ac_cv_struct_tm_zone=no)]) if test "$ac_cv_struct_tm_zone" = yes; then AC_DEFINE(HAVE_TM_ZONE) else AC_CACHE_CHECK(for tzname, ac_cv_var_tzname, [AC_TRY_LINK( changequote(<<, >>)dnl <<#include #ifndef tzname /* For SGI. */ extern char *tzname[]; /* RS6000 and others reject char **tzname. */ #endif>>, changequote([, ])dnl [atoi(*tzname);], ac_cv_var_tzname=yes, ac_cv_var_tzname=no)]) if test $ac_cv_var_tzname = yes; then AC_DEFINE(HAVE_TZNAME) fi fi ]) AC_DEFUN(AC_STRUCT_ST_BLOCKS, [AC_CACHE_CHECK([for st_blocks in struct stat], ac_cv_struct_st_blocks, [AC_TRY_COMPILE([#include #include ], [struct stat s; s.st_blocks;], ac_cv_struct_st_blocks=yes, ac_cv_struct_st_blocks=no)]) if test $ac_cv_struct_st_blocks = yes; then AC_DEFINE(HAVE_ST_BLOCKS) else LIBOBJS="$LIBOBJS fileblocks.${ac_objext}" fi AC_SUBST(LIBOBJS)dnl ]) AC_DEFUN(AC_STRUCT_ST_BLKSIZE, [AC_CACHE_CHECK([for st_blksize in struct stat], ac_cv_struct_st_blksize, [AC_TRY_COMPILE([#include #include ], [struct stat s; s.st_blksize;], ac_cv_struct_st_blksize=yes, ac_cv_struct_st_blksize=no)]) if test $ac_cv_struct_st_blksize = yes; then AC_DEFINE(HAVE_ST_BLKSIZE) fi ]) AC_DEFUN(AC_STRUCT_ST_RDEV, [AC_CACHE_CHECK([for st_rdev in struct stat], ac_cv_struct_st_rdev, [AC_TRY_COMPILE([#include #include ], [struct stat s; s.st_rdev;], ac_cv_struct_st_rdev=yes, ac_cv_struct_st_rdev=no)]) if test $ac_cv_struct_st_rdev = yes; then AC_DEFINE(HAVE_ST_RDEV) fi ]) dnl ### Checks for compiler characteristics AC_DEFUN(AC_C_CROSS, [AC_OBSOLETE([$0], [; it has been merged into AC_PROG_CC])]) AC_DEFUN(AC_C_CHAR_UNSIGNED, [AC_CACHE_CHECK(whether char is unsigned, ac_cv_c_char_unsigned, [if test "$GCC" = yes; then # GCC predefines this symbol on systems where it applies. AC_EGREP_CPP(yes, [#ifdef __CHAR_UNSIGNED__ yes #endif ], ac_cv_c_char_unsigned=yes, ac_cv_c_char_unsigned=no) else AC_TRY_RUN( [/* volatile prevents gcc2 from optimizing the test away on sparcs. */ #if !defined(__STDC__) || __STDC__ != 1 #define volatile #endif int main() { volatile char c = 255; exit(c < 0); }], ac_cv_c_char_unsigned=yes, ac_cv_c_char_unsigned=no) fi]) if test $ac_cv_c_char_unsigned = yes && test "$GCC" != yes; then AC_DEFINE(__CHAR_UNSIGNED__) fi ]) AC_DEFUN(AC_C_LONG_DOUBLE, [AC_CACHE_CHECK(for long double, ac_cv_c_long_double, [if test "$GCC" = yes; then ac_cv_c_long_double=yes else AC_TRY_RUN([int main() { /* The Stardent Vistra knows sizeof(long double), but does not support it. */ long double foo = 0.0; /* On Ultrix 4.3 cc, long double is 4 and double is 8. */ exit(sizeof(long double) < sizeof(double)); }], ac_cv_c_long_double=yes, ac_cv_c_long_double=no) fi]) if test $ac_cv_c_long_double = yes; then AC_DEFINE(HAVE_LONG_DOUBLE) fi ]) AC_DEFUN(AC_INT_16_BITS, [AC_OBSOLETE([$0], [; instead use AC_CHECK_SIZEOF(int)])dnl AC_MSG_CHECKING(whether int is 16 bits) AC_TRY_RUN([int main() { exit(sizeof(int) != 2); }], [AC_MSG_RESULT(yes) AC_DEFINE(INT_16_BITS)], AC_MSG_RESULT(no)) ]) AC_DEFUN(AC_LONG_64_BITS, [AC_OBSOLETE([$0], [; instead use AC_CHECK_SIZEOF(long)])dnl AC_MSG_CHECKING(whether long int is 64 bits) AC_TRY_RUN([int main() { exit(sizeof(long int) != 8); }], [AC_MSG_RESULT(yes) AC_DEFINE(LONG_64_BITS)], AC_MSG_RESULT(no)) ]) AC_DEFUN(AC_C_BIGENDIAN, [AC_CACHE_CHECK(whether byte ordering is bigendian, ac_cv_c_bigendian, [ac_cv_c_bigendian=unknown # See if sys/param.h defines the BYTE_ORDER macro. AC_TRY_COMPILE([#include #include ], [ #if !BYTE_ORDER || !BIG_ENDIAN || !LITTLE_ENDIAN bogus endian macros #endif], [# It does; now see whether it defined to BIG_ENDIAN or not. AC_TRY_COMPILE([#include #include ], [ #if BYTE_ORDER != BIG_ENDIAN not big endian #endif], ac_cv_c_bigendian=yes, ac_cv_c_bigendian=no)]) if test $ac_cv_c_bigendian = unknown; then AC_TRY_RUN([int main () { /* Are we little or big endian? From Harbison&Steele. */ union { long l; char c[sizeof (long)]; } u; u.l = 1; exit (u.c[sizeof (long) - 1] == 1); }], ac_cv_c_bigendian=no, ac_cv_c_bigendian=yes) fi]) if test $ac_cv_c_bigendian = yes; then AC_DEFINE(WORDS_BIGENDIAN) fi ]) dnl Do nothing if the compiler accepts the inline keyword. dnl Otherwise define inline to __inline__ or __inline if one of those work, dnl otherwise define inline to be empty. AC_DEFUN(AC_C_INLINE, [AC_CACHE_CHECK([for inline], ac_cv_c_inline, [ac_cv_c_inline=no for ac_kw in inline __inline__ __inline; do AC_TRY_COMPILE(, [} $ac_kw foo() {], [ac_cv_c_inline=$ac_kw; break]) done ]) case "$ac_cv_c_inline" in inline | yes) ;; no) AC_DEFINE(inline, ) ;; *) AC_DEFINE_UNQUOTED(inline, $ac_cv_c_inline) ;; esac ]) AC_DEFUN(AC_C_CONST, [dnl This message is consistent in form with the other checking messages, dnl and with the result message. AC_CACHE_CHECK([for working const], ac_cv_c_const, [AC_TRY_COMPILE(, changequote(<<, >>)dnl << #ifndef __cplusplus /* Ultrix mips cc rejects this. */ typedef int charset[2]; const charset x; #endif /* SunOS 4.1.1 cc rejects this. */ char const *const *ccp; char **p; /* NEC SVR4.0.2 mips cc rejects this. */ struct point {int x, y;}; static struct point const zero = {0,0}; /* AIX XL C 1.02.0.0 rejects this. It does not let you subtract one const X* pointer from another in an arm of an if-expression whose if-part is not a constant expression */ const char *g = "string"; ccp = &g + (g ? g-g : 0); /* HPUX 7.0 cc rejects these. */ ++ccp; p = (char**) ccp; ccp = (char const *const *) p; { /* SCO 3.2v4 cc rejects this. */ char *t; char const *s = 0 ? (char *) 0 : (char const *) 0; *t++ = 0; } { /* Someone thinks the Sun supposedly-ANSI compiler will reject this. */ int x[] = {25, 17}; const int *foo = &x[0]; ++foo; } { /* Sun SC1.0 ANSI compiler rejects this -- but not the above. */ typedef const int *iptr; iptr p = 0; ++p; } { /* AIX XL C 1.02.0.0 rejects this saying "k.c", line 2.27: 1506-025 (S) Operand must be a modifiable lvalue. */ struct s { int j; const int *ap[3]; }; struct s *b; b->j = 5; } { /* ULTRIX-32 V3.1 (Rev 9) vcc rejects this */ const int foo = 10; } >>, changequote([, ])dnl ac_cv_c_const=yes, ac_cv_c_const=no)]) if test $ac_cv_c_const = no; then AC_DEFINE(const, ) fi ]) AC_DEFUN(AC_C_STRINGIZE, [ AC_REQUIRE([AC_PROG_CPP]) AC_MSG_CHECKING([for preprocessor stringizing operator]) AC_CACHE_VAL(ac_cv_c_stringize, AC_EGREP_CPP([#teststring],[ #define x(y) #y char *s = x(teststring); ], ac_cv_c_stringize=no, ac_cv_c_stringize=yes)) if test "${ac_cv_c_stringize}" = yes then AC_DEFINE(HAVE_STRINGIZE) fi AC_MSG_RESULT([${ac_cv_c_stringize}]) ])dnl define(AC_ARG_ARRAY, [errprint(__file__:__line__: [$0] has been removed; don't do unportable things with arguments )m4exit(4)]) dnl Check the object extension used by the compiler: typically .o or dnl .obj. If this is called, some other behaviour will change, dnl determined by ac_objext. AC_DEFUN(AC_OBJEXT, [AC_MSG_CHECKING([for object suffix]) AC_CACHE_VAL(ac_cv_objext, [rm -f conftest* echo 'int i = 1;' > conftest.$ac_ext if AC_TRY_EVAL(ac_compile); then for ac_file in conftest.*; do case $ac_file in *.c) ;; *) ac_cv_objext=`echo $ac_file | sed -e s/conftest.//` ;; esac done else AC_MSG_ERROR([installation or configuration problem; compiler does not work]) fi rm -f conftest*]) AC_MSG_RESULT($ac_cv_objext) OBJEXT=$ac_cv_objext ac_objext=$ac_cv_objext AC_SUBST(OBJEXT)]) dnl Determine the linker flags (e.g. `-L' and `-l') for the Fortran 77 dnl intrinsic and run-time libraries that are required to successfully dnl link a Fortran 77 program or shared library. The output variable dnl FLIBS is set to these flags. dnl dnl This macro is intended to be used in those situations when it is dnl necessary to mix, e.g. C++ and Fortran 77, source code into a single dnl program or shared library. dnl dnl For example, if object files from a C++ and Fortran 77 compiler must dnl be linked together, then the C++ compiler/linker must be used for dnl linking (since special C++-ish things need to happen at link time dnl like calling global constructors, instantiating templates, enabling dnl exception support, etc.). dnl dnl However, the Fortran 77 intrinsic and run-time libraries must be dnl linked in as well, but the C++ compiler/linker doesn't know how to dnl add these Fortran 77 libraries. Hence, the macro dnl `AC_F77_LIBRARY_LDFLAGS' was created to determine these Fortran 77 dnl libraries. dnl dnl This macro was packaged in its current form by Matthew D. Langston dnl . However, nearly all of this macro dnl came from the `OCTAVE_FLIBS' macro in `octave-2.0.13/aclocal.m4', dnl and full credit should go to John W. Eaton for writing this dnl extremely useful macro. Thank you John. dnl dnl AC_F77_LIBRARY_LDFLAGS() AC_DEFUN(AC_F77_LIBRARY_LDFLAGS, [AC_MSG_CHECKING([for Fortran 77 libraries]) AC_REQUIRE([AC_PROG_F77]) AC_REQUIRE([AC_CANONICAL_HOST]) AC_CACHE_VAL(ac_cv_flibs, [changequote(, )dnl dnl Write a minimal program and compile it with -v. I don't know what dnl to do if your compiler doesn't have -v... echo " END" > conftest.f foutput=`${F77} -v -o conftest conftest.f 2>&1` dnl dnl The easiest thing to do for xlf output is to replace all the commas dnl with spaces. Try to only do that if the output is really from xlf, dnl since doing that causes problems on other systems. dnl xlf_p=`echo $foutput | grep xlfentry` if test -n "$xlf_p"; then foutput=`echo $foutput | sed 's/,/ /g'` fi dnl ld_run_path=`echo $foutput | \ sed -n -e 's/^.*LD_RUN_PATH *= *\([^ ]*\).*/\1/p'` dnl dnl We are only supposed to find this on Solaris systems... dnl Uh, the run path should be absolute, shouldn't it? dnl case "$ld_run_path" in /*) if test "$ac_cv_prog_gcc" = yes; then ld_run_path="-Xlinker -R -Xlinker $ld_run_path" else ld_run_path="-R $ld_run_path" fi ;; *) ld_run_path= ;; esac dnl flibs= lflags= dnl dnl If want_arg is set, we know we want the arg to be added to the list, dnl so we don't have to examine it. dnl want_arg= dnl for arg in $foutput; do old_want_arg=$want_arg want_arg= dnl dnl None of the options that take arguments expect the argument to dnl start with a -, so pretend we didn't see anything special. dnl if test -n "$old_want_arg"; then case "$arg" in -*) old_want_arg= ;; esac fi case "$old_want_arg" in '') case $arg in /*.a) exists=false for f in $lflags; do if test x$arg = x$f; then exists=true fi done if $exists; then arg= else lflags="$lflags $arg" fi ;; -bI:*) exists=false for f in $lflags; do if test x$arg = x$f; then exists=true fi done if $exists; then arg= else if test "$ac_cv_prog_gcc" = yes; then lflags="$lflags -Xlinker $arg" else lflags="$lflags $arg" fi fi ;; -lang* | -lcrt0.o | -lc | -lgcc) arg= ;; -[lLR]) want_arg=$arg arg= ;; -[lLR]*) exists=false for f in $lflags; do if test x$arg = x$f; then exists=true fi done if $exists; then arg= else case "$arg" in -lkernel32) case "$canonical_host_type" in *-*-cygwin*) arg= ;; *) lflags="$lflags $arg" ;; esac ;; -lm) ;; *) lflags="$lflags $arg" ;; esac fi ;; -u) want_arg=$arg arg= ;; -Y) want_arg=$arg arg= ;; *) arg= ;; esac ;; -[lLR]) arg="$old_want_arg $arg" ;; -u) arg="-u $arg" ;; -Y) dnl dnl Should probably try to ensure unique directory options here too. dnl This probably only applies to Solaris systems, and then will only dnl work with gcc... dnl arg=`echo $arg | sed -e 's%^P,%%'` SAVE_IFS=$IFS IFS=: list= for elt in $arg; do list="$list -L$elt" done IFS=$SAVE_IFS arg="$list" ;; esac dnl if test -n "$arg"; then flibs="$flibs $arg" fi done if test -n "$ld_run_path"; then flibs_result="$ld_run_path $flibs" else flibs_result="$flibs" fi changequote([, ])dnl ac_cv_flibs="$flibs_result"]) FLIBS="$ac_cv_flibs" AC_SUBST(FLIBS)dnl AC_MSG_RESULT($FLIBS) ]) dnl ### Checks for operating system services AC_DEFUN(AC_SYS_INTERPRETER, [# Pull the hash mark out of the macro call to avoid m4 problems. ac_msg="whether #! works in shell scripts" AC_CACHE_CHECK($ac_msg, ac_cv_sys_interpreter, [echo '#! /bin/cat exit 69 ' > conftest chmod u+x conftest (SHELL=/bin/sh; export SHELL; ./conftest >/dev/null) if test $? -ne 69; then ac_cv_sys_interpreter=yes else ac_cv_sys_interpreter=no fi rm -f conftest]) interpval="$ac_cv_sys_interpreter" ]) define(AC_HAVE_POUNDBANG, [errprint(__file__:__line__: [$0 has been replaced by AC_SYS_INTERPRETER, taking no arguments ])m4exit(4)]) AC_DEFUN(AC_SYS_LONG_FILE_NAMES, [AC_CACHE_CHECK(for long file names, ac_cv_sys_long_file_names, [ac_cv_sys_long_file_names=yes # Test for long file names in all the places we know might matter: # . the current directory, where building will happen # $prefix/lib where we will be installing things # $exec_prefix/lib likewise # eval it to expand exec_prefix. # $TMPDIR if set, where it might want to write temporary files # if $TMPDIR is not set: # /tmp where it might want to write temporary files # /var/tmp likewise # /usr/tmp likewise if test -n "$TMPDIR" && test -d "$TMPDIR" && test -w "$TMPDIR"; then ac_tmpdirs="$TMPDIR" else ac_tmpdirs='/tmp /var/tmp /usr/tmp' fi for ac_dir in . $ac_tmpdirs `eval echo $prefix/lib $exec_prefix/lib` ; do test -d $ac_dir || continue test -w $ac_dir || continue # It is less confusing to not echo anything here. (echo 1 > $ac_dir/conftest9012345) 2>/dev/null (echo 2 > $ac_dir/conftest9012346) 2>/dev/null val=`cat $ac_dir/conftest9012345 2>/dev/null` if test ! -f $ac_dir/conftest9012345 || test "$val" != 1; then ac_cv_sys_long_file_names=no rm -f $ac_dir/conftest9012345 $ac_dir/conftest9012346 2>/dev/null break fi rm -f $ac_dir/conftest9012345 $ac_dir/conftest9012346 2>/dev/null done]) if test $ac_cv_sys_long_file_names = yes; then AC_DEFINE(HAVE_LONG_FILE_NAMES) fi ]) AC_DEFUN(AC_SYS_RESTARTABLE_SYSCALLS, [AC_CACHE_CHECK(for restartable system calls, ac_cv_sys_restartable_syscalls, [AC_TRY_RUN( [/* Exit 0 (true) if wait returns something other than -1, i.e. the pid of the child, which means that wait was restarted after getting the signal. */ #include #include ucatch (isig) { } int main () { int i = fork (), status; if (i == 0) { sleep (3); kill (getppid (), SIGINT); sleep (3); exit (0); } signal (SIGINT, ucatch); status = wait(&i); if (status == -1) wait(&i); exit (status == -1); } ], ac_cv_sys_restartable_syscalls=yes, ac_cv_sys_restartable_syscalls=no)]) if test $ac_cv_sys_restartable_syscalls = yes; then AC_DEFINE(HAVE_RESTARTABLE_SYSCALLS) fi ]) AC_DEFUN(AC_PATH_X, [AC_REQUIRE_CPP()dnl Set CPP; we run AC_PATH_X_DIRECT conditionally. # If we find X, set shell vars x_includes and x_libraries to the # paths, otherwise set no_x=yes. # Uses ac_ vars as temps to allow command line to override cache and checks. # --without-x overrides everything else, but does not touch the cache. AC_MSG_CHECKING(for X) AC_ARG_WITH(x, [ --with-x use the X Window System]) # $have_x is `yes', `no', `disabled', or empty when we do not yet know. if test "x$with_x" = xno; then # The user explicitly disabled X. have_x=disabled else if test "x$x_includes" != xNONE && test "x$x_libraries" != xNONE; then # Both variables are already set. have_x=yes else AC_CACHE_VAL(ac_cv_have_x, [# One or both of the vars are not set, and there is no cached value. ac_x_includes=NO ac_x_libraries=NO AC_PATH_X_XMKMF AC_PATH_X_DIRECT if test "$ac_x_includes" = NO || test "$ac_x_libraries" = NO; then # Didn't find X anywhere. Cache the known absence of X. ac_cv_have_x="have_x=no" else # Record where we found X for the cache. ac_cv_have_x="have_x=yes \ ac_x_includes=$ac_x_includes ac_x_libraries=$ac_x_libraries" fi])dnl fi eval "$ac_cv_have_x" fi # $with_x != no if test "$have_x" != yes; then AC_MSG_RESULT($have_x) no_x=yes else # If each of the values was on the command line, it overrides each guess. test "x$x_includes" = xNONE && x_includes=$ac_x_includes test "x$x_libraries" = xNONE && x_libraries=$ac_x_libraries # Update the cache value to reflect the command line values. ac_cv_have_x="have_x=yes \ ac_x_includes=$x_includes ac_x_libraries=$x_libraries" AC_MSG_RESULT([libraries $x_libraries, headers $x_includes]) fi ]) dnl Internal subroutine of AC_PATH_X. dnl Set ac_x_includes and/or ac_x_libraries. AC_DEFUN(AC_PATH_X_XMKMF, [rm -fr conftestdir if mkdir conftestdir; then cd conftestdir # Make sure to not put "make" in the Imakefile rules, since we grep it out. cat > Imakefile <<'EOF' acfindx: @echo 'ac_im_incroot="${INCROOT}"; ac_im_usrlibdir="${USRLIBDIR}"; ac_im_libdir="${LIBDIR}"' EOF if (xmkmf) >/dev/null 2>/dev/null && test -f Makefile; then # GNU make sometimes prints "make[1]: Entering...", which would confuse us. eval `${MAKE-make} acfindx 2>/dev/null | grep -v make` # Open Windows xmkmf reportedly sets LIBDIR instead of USRLIBDIR. for ac_extension in a so sl; do if test ! -f $ac_im_usrlibdir/libX11.$ac_extension && test -f $ac_im_libdir/libX11.$ac_extension; then ac_im_usrlibdir=$ac_im_libdir; break fi done # Screen out bogus values from the imake configuration. They are # bogus both because they are the default anyway, and because # using them would break gcc on systems where it needs fixed includes. case "$ac_im_incroot" in /usr/include) ;; *) test -f "$ac_im_incroot/X11/Xos.h" && ac_x_includes="$ac_im_incroot" ;; esac case "$ac_im_usrlibdir" in /usr/lib | /lib) ;; *) test -d "$ac_im_usrlibdir" && ac_x_libraries="$ac_im_usrlibdir" ;; esac fi cd .. rm -fr conftestdir fi ]) dnl Internal subroutine of AC_PATH_X. dnl Set ac_x_includes and/or ac_x_libraries. AC_DEFUN(AC_PATH_X_DIRECT, [if test "$ac_x_includes" = NO; then # Guess where to find include files, by looking for this one X11 .h file. test -z "$x_direct_test_include" && x_direct_test_include=X11/Intrinsic.h # First, try using that file with no special directory specified. AC_TRY_CPP([#include <$x_direct_test_include>], [# We can compile using X headers with no special include directory. ac_x_includes=], [# Look for the header file in a standard set of common directories. # Check X11 before X11Rn because it is often a symlink to the current release. for ac_dir in \ /usr/X11/include \ /usr/X11R6/include \ /usr/X11R5/include \ /usr/X11R4/include \ \ /usr/include/X11 \ /usr/include/X11R6 \ /usr/include/X11R5 \ /usr/include/X11R4 \ \ /usr/local/X11/include \ /usr/local/X11R6/include \ /usr/local/X11R5/include \ /usr/local/X11R4/include \ \ /usr/local/include/X11 \ /usr/local/include/X11R6 \ /usr/local/include/X11R5 \ /usr/local/include/X11R4 \ \ /usr/X386/include \ /usr/x386/include \ /usr/XFree86/include/X11 \ \ /usr/include \ /usr/local/include \ /usr/unsupported/include \ /usr/athena/include \ /usr/local/x11r5/include \ /usr/lpp/Xamples/include \ \ /usr/openwin/include \ /usr/openwin/share/include \ ; \ do if test -r "$ac_dir/$x_direct_test_include"; then ac_x_includes=$ac_dir break fi done]) fi # $ac_x_includes = NO if test "$ac_x_libraries" = NO; then # Check for the libraries. test -z "$x_direct_test_library" && x_direct_test_library=Xt test -z "$x_direct_test_function" && x_direct_test_function=XtMalloc # See if we find them without any special options. # Don't add to $LIBS permanently. ac_save_LIBS="$LIBS" LIBS="-l$x_direct_test_library $LIBS" AC_TRY_LINK(, [${x_direct_test_function}()], [LIBS="$ac_save_LIBS" # We can link X programs with no special library path. ac_x_libraries=], [LIBS="$ac_save_LIBS" # First see if replacing the include by lib works. # Check X11 before X11Rn because it is often a symlink to the current release. for ac_dir in `echo "$ac_x_includes" | sed s/include/lib/` \ /usr/X11/lib \ /usr/X11R6/lib \ /usr/X11R5/lib \ /usr/X11R4/lib \ \ /usr/lib/X11 \ /usr/lib/X11R6 \ /usr/lib/X11R5 \ /usr/lib/X11R4 \ \ /usr/local/X11/lib \ /usr/local/X11R6/lib \ /usr/local/X11R5/lib \ /usr/local/X11R4/lib \ \ /usr/local/lib/X11 \ /usr/local/lib/X11R6 \ /usr/local/lib/X11R5 \ /usr/local/lib/X11R4 \ \ /usr/X386/lib \ /usr/x386/lib \ /usr/XFree86/lib/X11 \ \ /usr/lib \ /usr/local/lib \ /usr/unsupported/lib \ /usr/athena/lib \ /usr/local/x11r5/lib \ /usr/lpp/Xamples/lib \ /lib/usr/lib/X11 \ \ /usr/openwin/lib \ /usr/openwin/share/lib \ ; \ do dnl Don't even attempt the hair of trying to link an X program! for ac_extension in a so sl; do if test -r $ac_dir/lib${x_direct_test_library}.$ac_extension; then ac_x_libraries=$ac_dir break 2 fi done done]) fi # $ac_x_libraries = NO ]) dnl Find additional X libraries, magic flags, etc. AC_DEFUN(AC_PATH_XTRA, [AC_REQUIRE([AC_PATH_X])dnl if test "$no_x" = yes; then # Not all programs may use this symbol, but it does not hurt to define it. AC_DEFINE(X_DISPLAY_MISSING) X_CFLAGS= X_PRE_LIBS= X_LIBS= X_EXTRA_LIBS= else if test -n "$x_includes"; then X_CFLAGS="$X_CFLAGS -I$x_includes" fi # It would also be nice to do this for all -L options, not just this one. if test -n "$x_libraries"; then X_LIBS="$X_LIBS -L$x_libraries" dnl FIXME banish uname from this macro! # For Solaris; some versions of Sun CC require a space after -R and # others require no space. Words are not sufficient . . . . case "`(uname -sr) 2>/dev/null`" in "SunOS 5"*) AC_MSG_CHECKING(whether -R must be followed by a space) ac_xsave_LIBS="$LIBS"; LIBS="$LIBS -R$x_libraries" AC_TRY_LINK(, , ac_R_nospace=yes, ac_R_nospace=no) if test $ac_R_nospace = yes; then AC_MSG_RESULT(no) X_LIBS="$X_LIBS -R$x_libraries" else LIBS="$ac_xsave_LIBS -R $x_libraries" AC_TRY_LINK(, , ac_R_space=yes, ac_R_space=no) if test $ac_R_space = yes; then AC_MSG_RESULT(yes) X_LIBS="$X_LIBS -R $x_libraries" else AC_MSG_RESULT(neither works) fi fi LIBS="$ac_xsave_LIBS" esac fi # Check for system-dependent libraries X programs must link with. # Do this before checking for the system-independent R6 libraries # (-lICE), since we may need -lsocket or whatever for X linking. if test "$ISC" = yes; then X_EXTRA_LIBS="$X_EXTRA_LIBS -lnsl_s -linet" else # Martyn.Johnson@cl.cam.ac.uk says this is needed for Ultrix, if the X # libraries were built with DECnet support. And karl@cs.umb.edu says # the Alpha needs dnet_stub (dnet does not exist). AC_CHECK_LIB(dnet, dnet_ntoa, [X_EXTRA_LIBS="$X_EXTRA_LIBS -ldnet"]) if test $ac_cv_lib_dnet_dnet_ntoa = no; then AC_CHECK_LIB(dnet_stub, dnet_ntoa, [X_EXTRA_LIBS="$X_EXTRA_LIBS -ldnet_stub"]) fi # msh@cis.ufl.edu says -lnsl (and -lsocket) are needed for his 386/AT, # to get the SysV transport functions. # chad@anasazi.com says the Pyramis MIS-ES running DC/OSx (SVR4) # needs -lnsl. # The nsl library prevents programs from opening the X display # on Irix 5.2, according to dickey@clark.net. AC_CHECK_FUNC(gethostbyname) if test $ac_cv_func_gethostbyname = no; then AC_CHECK_LIB(nsl, gethostbyname, X_EXTRA_LIBS="$X_EXTRA_LIBS -lnsl") fi # lieder@skyler.mavd.honeywell.com says without -lsocket, # socket/setsockopt and other routines are undefined under SCO ODT # 2.0. But -lsocket is broken on IRIX 5.2 (and is not necessary # on later versions), says simon@lia.di.epfl.ch: it contains # gethostby* variants that don't use the nameserver (or something). # -lsocket must be given before -lnsl if both are needed. # We assume that if connect needs -lnsl, so does gethostbyname. AC_CHECK_FUNC(connect) if test $ac_cv_func_connect = no; then AC_CHECK_LIB(socket, connect, X_EXTRA_LIBS="-lsocket $X_EXTRA_LIBS", , $X_EXTRA_LIBS) fi # gomez@mi.uni-erlangen.de says -lposix is necessary on A/UX. AC_CHECK_FUNC(remove) if test $ac_cv_func_remove = no; then AC_CHECK_LIB(posix, remove, X_EXTRA_LIBS="$X_EXTRA_LIBS -lposix") fi # BSDI BSD/OS 2.1 needs -lipc for XOpenDisplay. AC_CHECK_FUNC(shmat) if test $ac_cv_func_shmat = no; then AC_CHECK_LIB(ipc, shmat, X_EXTRA_LIBS="$X_EXTRA_LIBS -lipc") fi fi # Check for libraries that X11R6 Xt/Xaw programs need. ac_save_LDFLAGS="$LDFLAGS" test -n "$x_libraries" && LDFLAGS="$LDFLAGS -L$x_libraries" # SM needs ICE to (dynamically) link under SunOS 4.x (so we have to # check for ICE first), but we must link in the order -lSM -lICE or # we get undefined symbols. So assume we have SM if we have ICE. # These have to be linked with before -lX11, unlike the other # libraries we check for below, so use a different variable. # --interran@uluru.Stanford.EDU, kb@cs.umb.edu. AC_CHECK_LIB(ICE, IceConnectionNumber, [X_PRE_LIBS="$X_PRE_LIBS -lSM -lICE"], , $X_EXTRA_LIBS) LDFLAGS="$ac_save_LDFLAGS" fi AC_SUBST(X_CFLAGS)dnl AC_SUBST(X_PRE_LIBS)dnl AC_SUBST(X_LIBS)dnl AC_SUBST(X_EXTRA_LIBS)dnl ]) dnl The old Cygwin32 macro is deprecated. AC_DEFUN(AC_CYGWIN32, [AC_OBSOLETE([$0], [; instead use AC_CYGWIN])dnl AC_CYGWIN]) dnl Check for Cygwin. This is a way to set the right value for dnl EXEEXT. AC_DEFUN(AC_CYGWIN, [AC_CACHE_CHECK(for Cygwin environment, ac_cv_cygwin, [AC_TRY_COMPILE(,[ #ifndef __CYGWIN__ #define __CYGWIN__ __CYGWIN32__ #endif return __CYGWIN__;], ac_cv_cygwin=yes, ac_cv_cygwin=no) rm -f conftest*]) CYGWIN= test "$ac_cv_cygwin" = yes && CYGWIN=yes]) dnl Check for mingw32. This is another way to set the right value for dnl EXEEXT. AC_DEFUN(AC_MINGW32, [AC_CACHE_CHECK(for mingw32 environment, ac_cv_mingw32, [AC_TRY_COMPILE(,[return __MINGW32__;], ac_cv_mingw32=yes, ac_cv_mingw32=no) rm -f conftest*]) MINGW32= test "$ac_cv_mingw32" = yes && MINGW32=yes]) dnl Check for the extension used for executables. This knows that we dnl add .exe for Cygwin or mingw32. Otherwise, it compiles a test dnl executable. If this is called, the executable extensions will be dnl automatically used by link commands run by the configure script. AC_DEFUN(AC_EXEEXT, [AC_REQUIRE([AC_CYGWIN]) AC_REQUIRE([AC_MINGW32]) AC_MSG_CHECKING([for executable suffix]) AC_CACHE_VAL(ac_cv_exeext, [if test "$CYGWIN" = yes || test "$MINGW32" = yes; then ac_cv_exeext=.exe else rm -f conftest* echo 'int main () { return 0; }' > conftest.$ac_ext ac_cv_exeext= if AC_TRY_EVAL(ac_link); then for file in conftest.*; do case $file in *.c | *.o | *.obj) ;; *) ac_cv_exeext=`echo $file | sed -e s/conftest//` ;; esac done else AC_MSG_ERROR([installation or configuration problem: compiler cannot create executables.]) fi rm -f conftest* test x"${ac_cv_exeext}" = x && ac_cv_exeext=no fi]) EXEEXT="" test x"${ac_cv_exeext}" != xno && EXEEXT=${ac_cv_exeext} AC_MSG_RESULT(${ac_cv_exeext}) dnl Setting ac_exeext will implicitly change the ac_link command. ac_exeext=$EXEEXT AC_SUBST(EXEEXT)]) dnl ### Checks for UNIX variants dnl These are kludges which should be replaced by a single POSIX check. dnl They aren't cached, to discourage their use. AC_DEFUN(AC_AIX, [AC_BEFORE([$0], [AC_TRY_COMPILE])dnl AC_BEFORE([$0], [AC_TRY_RUN])dnl AC_MSG_CHECKING(for AIX) AC_CACHE_VAL(ac_cv_sys_aix,[ AC_EGREP_CPP(yes, [#ifdef _AIX yes #endif ], [ac_cv_sys_aix=yes], [ac_cv_sys_aix=no])]) AC_MSG_RESULT($ac_cv_sys_aix) if test $ac_cv_sys_aix = yes; then AC_DEFINE(_ALL_SOURCE) fi ]) AC_DEFUN(AC_MINIX, [AC_BEFORE([$0], [AC_TRY_COMPILE])dnl AC_BEFORE([$0], [AC_TRY_RUN])dnl AC_CHECK_HEADER(minix/config.h, MINIX=yes, MINIX=) if test "$MINIX" = yes; then AC_DEFINE(_POSIX_SOURCE) AC_DEFINE(_POSIX_1_SOURCE, 2) AC_DEFINE(_MINIX) fi ]) AC_DEFUN(AC_ISC_POSIX, [AC_REQUIRE([AC_PROG_CC])dnl AC_BEFORE([$0], [AC_TRY_COMPILE])dnl AC_BEFORE([$0], [AC_TRY_RUN])dnl AC_MSG_CHECKING(for POSIXized ISC) AC_CACHE_VAL(ac_cv_sys_isc_posix,[ if test -d /etc/conf/kconfig.d && grep _POSIX_VERSION [/usr/include/sys/unistd.h] >/dev/null 2>&1 then ac_cv_sys_isc_posix=yes else ac_cv_sys_isc_posix=no fi ]) AC_MSG_RESULT($ac_cv_sys_isc_posix) if test $ac_cv_sys_isc_posix = yes; then ISC=yes # If later tests want to check for ISC. AC_DEFINE(_POSIX_SOURCE) if test "$GCC" = yes; then CC="$CC -posix" else CC="$CC -Xp" fi else ISC= fi ]) AC_DEFUN(AC_XENIX_DIR, [AC_OBSOLETE([$0], [; instead use AC_HEADER_DIRENT])dnl AC_REQUIRE([AC_DIR_HEADER])dnl AC_MSG_CHECKING(for Xenix) AC_EGREP_CPP(yes, [#if defined(M_XENIX) && !defined(M_UNIX) yes #endif ], [AC_MSG_RESULT(yes); XENIX=yes], [AC_MSG_RESULT(no); XENIX=]) if test "$XENIX" = yes; then # Make sure -ldir precedes -lx. test $ac_header_dirent = dirent.h && LIBS="-ldir $LIBS" LIBS="$LIBS -lx" fi ]) AC_DEFUN(AC_DYNIX_SEQ, [AC_OBSOLETE([$0], [; instead use AC_FUNC_GETMNTENT])dnl AC_CHECK_LIB(seq, getmntent, LIBS="-lseq $LIBS") ]) AC_DEFUN(AC_IRIX_SUN, [AC_OBSOLETE([$0], [; instead use AC_FUNC_GETMNTENT or AC_CHECK_LIB(sun, getpwnam)])dnl AC_CHECK_LIB(sun, getmntent, LIBS="-lsun $LIBS") ]) AC_DEFUN(AC_SCO_INTL, [AC_OBSOLETE([$0], [; instead use AC_FUNC_STRFTIME])dnl AC_CHECK_LIB(intl, strftime, LIBS="-lintl $LIBS") ])