dnl  AUTOCONF configuration for CLN
dnl
dnl  configure.ac ---<autoconf>--->> configure
dnl
dnl  configure    ---<sh>--->> config.status
dnl                      --->> include/cln/config.h
dnl        cln-config.in --->> cln-config
dnl          Makefile.in --->> Makefile
dnl      src/Makefile.in --->> src/Makefile
dnl
dnl  Makefile   ---<make>--->> libcln.a
dnl
dnl
AC_INIT(src/integer/gcd/cl_I_gcd.cc)
AC_CONFIG_AUX_DIR(autoconf)
AC_CONFIG_HEADER(include/cln/config.h include/cln/version.h src/base/cl_base_config.h src/base/cl_gmpconfig.h src/timing/cl_t_config.h)
AC_PROG_MAKE_SET
dnl This piece of sed script replaces every line containing '@subdir@'
dnl by several consecutive lines, each referencing one subdir.
extrasub="$extrasub"'
/@subdir@/{
h
g
s/@subdir@/src/
p
g
s/@subdir@/tests/
p
g
s/@subdir@/benchmarks/
p
g
s/@subdir@/examples/
p
g
s/@subdir@/doc/
p
d
}
'
dnl
dnl           checks for programs
dnl
CL_PROG_CC
                      dnl sets variable CC
AC_PROG_CPP
                      dnl sets variable CPP
CL_PROG_CXX
                      dnl sets variable CXX
AC_PROG_CXXCPP
                      dnl sets variable CXXCPP
CL_AS_UNDERSCORE
                      dnl sets variable AS_UNDERSCORE, DEFS ASM_UNDERSCORE
CL_AS_NOEXECSTACK
                      dnl sets variable ASMFLAGS
AC_PROG_RANLIB
                      dnl sets variable RANLIB
AC_PROG_INSTALL
                      dnl sets variables INSTALL, INSTALL_DATA, INSTALL_PROGRAM
dnl
dnl           check for host type
dnl
CL_CANONICAL_HOST(autoconf)
                      dnl sets variables host, host_cpu, host_vendor, host_os
CL_CANONICAL_HOST_CPU
                      dnl DEFS __${host_cpu}__
dnl
dnl           check for build configuration
dnl
PACKAGE=cln
                      dnl libtool wants PACKAGE
case $host_os in
    *mingw*)
     AC_DISABLE_SHARED
  dnl Shared libraries are not supported on some platforms [yet]
    ;;
    *)
     AC_ENABLE_SHARED
    ;;
esac
AC_PROG_LIBTOOL
                      dnl sets variable LIBTOOL

dnl Libtool's library version information for CLN.
dnl (Not to be confused with CLN's release version.)
dnl Making new releases:
dnl * increment CL_REVISION,
dnl * if any functions/classes have been added, removed or changed, increment
dnl   CL_CURRENT and set CL_REVISION to 0,
dnl * if any functions/classes have been added, increment CL_AGE,
dnl * if backwards compatibility has been broken, set CL_AGE to 0.
dnl $(CL_CURRENT):$(CL_REVISION):$(CL_AGE) results in
dnl libcln.so.$(CL_CURRENT)-$(CL_AGE)
CL_CURRENT=5
CL_REVISION=2
CL_AGE=0
dnl make substitutions
AC_SUBST(CL_CURRENT)
AC_SUBST(CL_REVISION)
AC_SUBST(CL_AGE)
dnl release version
CL_VERSION_MAJOR=1
CL_VERSION_MINOR=2
CL_VERSION_PATCHLEVEL=2
dnl release version for cln/config.h, so it can be tested by the preprocessor
AC_DEFINE_UNQUOTED(CL_VERSION_MAJOR, $CL_VERSION_MAJOR)
AC_DEFINE_UNQUOTED(CL_VERSION_MINOR, $CL_VERSION_MINOR)
AC_DEFINE_UNQUOTED(CL_VERSION_PATCHLEVEL, $CL_VERSION_PATCHLEVEL)
dnl concatenated release version
CL_VERSION=$CL_VERSION_MAJOR.$CL_VERSION_MINOR.$CL_VERSION_PATCHLEVEL
AC_DEFINE_UNQUOTED(CL_VERSION, $CL_VERSION)
AC_SUBST(CL_VERSION)

dnl
dnl           checks for compiler characteristics
dnl
AC_LANG_CPLUSPLUS
dnl
CL_LONGLONG
                      dnl DEFS HAVE_LONGLONG
CL_LONGDOUBLE
                      dnl DEFS HAVE_LONGDOUBLE
CL_GLOBAL_CONSTRUCTORS
                      dnl DEFS CL_GLOBAL_CONSTRUCTOR_PREFIX, CL_GLOBAL_DESTRUCTOR_PREFIX
dnl
dnl           checks for header files
dnl
AC_CHECK_HEADERS([unistd.h])
                      dnl DEFS HAVE_UNISTD_H if exist unistd.h
dnl
dnl           checks for typedefs
dnl
dnl
dnl           checks for functions and declarations
dnl
CL_ALLOCA
                      dnl set variable ALLOCA, DEFS NO_ALLOCA
CL_GETTIMEOFDAY
                      dnl DEFS HAVE_GETTIMEOFDAY, GETTIMEOFDAY_DOTS, GETTIMEOFDAY_TZP_T
ac_cv_func_ftime=no
                      dnl don't use ftime(3) even if it's available
CL_TIMES_CLOCK
                      dnl DEFS HAVE_TIMES_CLOCK
CL_RUSAGE
                      dnl DEFS HAVE_SYS_RESOURCE_H, HAVE_GETRUSAGE, HAVE_SYS_TIMES_H
CL_PERROR
                      dnl DEFS HAVE_PERROR_DECL
CL_ATTRIBUTE_FLATTEN
                      dnl DEFS CL_HAVE_ATTRIBUTE_FLATTEN
dnl
dnl           checks for compiler characteristics
dnl
AC_C_CHAR_UNSIGNED
                      dnl DEFS __CHAR_UNSIGNED__ if char is unsigned

dnl Create a subdirectory in the ${top_builddir} to hold auto-generated
dnl headers. This subdirectory does not exist when ${top_builddir} != ${top_srcdir}
dnl (a.k.a. "VPATH build").
if test ! -d include/cln; then
	AS_MKDIR_P([include/cln])
fi
CL_MACHINE([integer types and behaviour],${srcdir}/autoconf/intparam.c,[CL_INTPARAM_CROSS],include/cln/intparam.h,cl_cv_file_intparam_h)
                      dnl builds include/cln/intparam.h
CL_MACHINE([floating-point types and behaviour],${srcdir}/autoconf/floatparam.c,[CL_FLOATPARAM_CROSS],include/cln/floatparam.h,cl_cv_file_floatparam_h)
                      dnl builds include/cln/floatparam.h
CL_LIBGMP
                      dnl DEFS CL_USE_GMP, GMP_DEMANDS_UINTD_*
dnl
dnl           That's it.
dnl
for f in 'tests/.gdbinit'; do
  if test '!' -f "$f"; then
    echo "creating $f"
changequote(,)dnl
    g=`echo "$f" | sed -e 's,/[^/]*$,,'`
changequote([,])dnl
    test "$g" = "$f" || test -d "$g" || mkdir "$g"
    cp "$srcdir/$f" "$f"
  fi
done
AC_OUTPUT([Makefile src/Makefile tests/Makefile benchmarks/Makefile examples/Makefile doc/Makefile cln.spec cln.pc])