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# Configure paths for the CLN library# Richard Kreckel 12/4/2000# borrowed from Christian Bauer# stolen from Sam Lantinga# stolen from Manish Singh# stolen back from Frank Belew# stolen from Manish Singh# Shamelessly stolen from Owen Taylor
dnl AC_PATH_CLN([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])dnl Test for installed CLN library, and define CLN_CPPFLAGS and CLN_LIBSdnlAC_DEFUN(AC_PATH_CLN,[dnl dnl Get the cppflags and libraries from the cln-config scriptdnlAC_ARG_WITH(cln-prefix,[ --with-cln-prefix=PFX Prefix where CLN is installed (optional)], cln_config_prefix="$withval", cln_config_prefix="")AC_ARG_WITH(cln-exec-prefix,[ --with-cln-exec-prefix=PFX Exec prefix where CLN is installed (optional)], cln_config_exec_prefix="$withval", cln_config_exec_prefix="")AC_ARG_ENABLE(clntest, [ --disable-clntest Do not try to compile and run a test CLN program], , enable_clntest=yes)
if test x$cln_config_exec_prefix != x ; then cln_config_args="$cln_config_args --exec-prefix=$cln_config_exec_prefix" if test x${CLN_CONFIG+set} != xset ; then CLN_CONFIG=$cln_config_exec_prefix/bin/cln-config fifiif test x$cln_config_prefix != x ; then cln_config_args="$cln_config_args --prefix=$cln_config_prefix" if test x${CLN_CONFIG+set} != xset ; then CLN_CONFIG=$cln_config_prefix/bin/cln-config fifi
AC_PATH_PROG(CLN_CONFIG, cln-config, no)cln_min_version=ifelse([$1], ,1.1.0,$1)AC_MSG_CHECKING(for CLN - version >= $cln_min_version)if test "$CLN_CONFIG" = "no" ; then AC_MSG_RESULT(no) echo "*** The cln-config script installed by CLN could not be found" echo "*** If CLN was installed in PREFIX, make sure PREFIX/bin is in" echo "*** your path, or set the CLN_CONFIG environment variable to the" echo "*** full path to cln-config." ifelse([$3], , :, [$3])elsednl Parse required version and the result of cln-config. cln_min_major_version=`echo $cln_min_version | \ sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'` cln_min_minor_version=`echo $cln_min_version | \ sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'` cln_min_micro_version=`echo $cln_min_version | \ sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'` CLN_CPPFLAGS=`$CLN_CONFIG $cln_config_args --cppflags` CLN_LIBS=`$CLN_CONFIG $cln_config_args --libs` cln_config_major_version=`$CLN_CONFIG $cln_config_args --version | \ sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'` cln_config_minor_version=`$CLN_CONFIG $cln_config_args --version | \ sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'` cln_config_micro_version=`$CLN_CONFIG $cln_config_args --version | \ sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`dnl Check if the installed CLN is sufficiently new according to cln-config. if test \( $cln_config_major_version -lt $cln_min_major_version \) -o \ \( $cln_config_major_version -eq $cln_min_major_version -a $cln_config_minor_version -lt $cln_min_minor_version \) -o \ \( $cln_config_major_version -eq $cln_min_major_version -a $cln_config_minor_version -eq $cln_min_minor_version -a $cln_config_micro_version -lt $cln_min_micro_version \); then echo -e "\n*** 'cln-config --version' returned $cln_config_major_version.$cln_config_minor_version.$cln_config_micro_version, but the minimum version" echo "*** of CLN required is $cln_min_major_version.$cln_min_minor_version.$cln_min_micro_version. If cln-config is correct, then it is" echo "*** best to upgrade to the required version." echo "*** If cln-config was wrong, set the environment variable CLN_CONFIG" echo "*** to point to the correct copy of cln-config, and remove the file" echo "*** config.cache before re-running configure." ifelse([$3], , :, [$3]) elsednl The versions match so far. Now do a sanity check: Does the result of cln-configdnl match the version of the headers and the version built into the library, too? no_cln="" if test "x$enable_clntest" = "xyes" ; then ac_save_CPPFLAGS="$CPPFLAGS" ac_save_LIBS="$LIBS" CPPFLAGS="$CPPFLAGS $CLN_CPPFLAGS" LIBS="$LIBS $CLN_LIBS" rm -f conf.clntest AC_TRY_RUN([#include <stdio.h>#include <string.h>#include <cln/version.h>
/* we do not #include <stdlib.h> because autoconf in C++ mode inserts a prototype for exit() that conflicts with the one in stdlib.h */extern "C" int system(const char *);
int main(void){ int major, minor, micro; char *tmp_version;
system("touch conf.clntest");
if ((CL_VERSION_MAJOR != $cln_config_major_version) || (CL_VERSION_MINOR != $cln_config_minor_version) || (CL_VERSION_PATCHLEVEL != $cln_config_micro_version)) { printf("\n*** 'cln-config --version' returned %d.%d.%d, but the header file I found\n", $cln_config_major_version, $cln_config_minor_version, $cln_config_micro_version); printf("*** corresponds to %d.%d.%d. This mismatch suggests your installation of CLN\n", CL_VERSION_MAJOR, CL_VERSION_MINOR, CL_VERSION_PATCHLEVEL); printf("*** is corrupted or you have specified some wrong -I compiler flags.\n"); printf("*** Please inquire and consider reinstalling CLN.\n"); return 1; } if ((cln::version_major != $cln_config_major_version) || (cln::version_minor != $cln_config_minor_version) || (cln::version_patchlevel != $cln_config_micro_version)) { printf("\n*** 'cln-config --version' returned %d.%d.%d, but the library I found\n", $cln_config_major_version, $cln_config_minor_version, $cln_config_micro_version); printf("*** corresponds to %d.%d.%d. This mismatch suggests your installation of CLN\n", cln::version_major, cln::version_minor, cln::version_patchlevel); printf("*** is corrupted or you have specified some wrong -L compiler flags.\n"); printf("*** Please inquire and consider reinstalling CLN.\n"); return 1; } return 0;}],, no_cln=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"]) CPPFLAGS="$ac_save_CPPFLAGS" LIBS="$ac_save_LIBS" fi if test "x$no_cln" = x ; then AC_MSG_RESULT([yes, `$CLN_CONFIG $cln_config_args --version`]) ifelse([$2], , :, [$2]) else AC_MSG_RESULT(no) if test ! -f conf.clntest ; then echo "*** Could not run CLN test program, checking why..." CPPFLAGS="$CFLAGS $CLN_CPPFLAGS" LIBS="$LIBS $CLN_LIBS" AC_TRY_LINK([#include <stdio.h>#include <cln/version.h>], [ return 0; ], [ echo "*** The test program compiled, but did not run. This usually means" echo "*** that the run-time linker is not finding CLN or finding the wrong" echo "*** version of CLN. If it is not finding CLN, you'll need to set your" echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point" echo "*** to the installed location. Also, make sure you have run ldconfig if that" echo "*** is required on your system."], [ echo "*** The test program failed to compile or link. See the file config.log for the" echo "*** exact error that occured. This usually means CLN was incorrectly installed" echo "*** or that you have moved CLN since it was installed. In the latter case, you" echo "*** may want to edit the cln-config script: $CLN_CONFIG." ]) CPPFLAGS="$ac_save_CPPFLAGS" LIBS="$ac_save_LIBS" fi CLN_CPPFLAGS="" CLN_LIBS="" ifelse([$3], , :, [$3]) fi fifiAC_SUBST(CLN_CPPFLAGS)AC_SUBST(CLN_LIBS)rm -f conf.clntest])
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