--- /dev/null
+# Configure paths for CLN
+# Richard Kreckel 11/17/2000
+# stolen 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_LIBCLN([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
+dnl Test for installed CLN library, and define LIBCLN_CPPFLAGS and LIBCLN_LIBS
+dnl
+AC_DEFUN(AC_PATH_LIBCLN,
+[dnl
+dnl Get the cppflags and libraries from the cln-config script
+dnl
+AC_ARG_WITH(cln-prefix,[ --with-cln-prefix=PFX Prefix where CLN is installed (optional)],
+ cln_prefix="$withval", cln_prefix="")
+AC_ARG_WITH(cln-exec-prefix,[ --with-cln-exec-prefix=PFX Exec prefix where CLN is installed (optional)],
+ cln_exec_prefix="$withval", cln_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$cln_exec_prefix != x ; then
+ cln_args="$cln_args --exec-prefix=$cln_exec_prefix"
+ if test x${CLN_CONFIG+set} != xset ; then
+ CLN_CONFIG=$cln_exec_prefix/bin/cln-config
+ fi
+ fi
+ if test x$cln_prefix != x ; then
+ cln_args="$cln_args --prefix=$cln_prefix"
+ if test x${CLN_CONFIG+set} != xset ; then
+ CLN_CONFIG=$cln_prefix/bin/cln-config
+ fi
+ fi
+
+ AC_PATH_PROG(CLN_CONFIG, cln-config, no)
+ min_cln_version=ifelse([$1], ,1.1.0,$1)
+ AC_MSG_CHECKING(for CLN - version >= $min_cln_version)
+ no_cln=""
+ if test "$CLN_CONFIG" = "no" ; then
+ no_cln=yes
+ else
+ LIBCLN_CPPFLAGS=`$CLN_CONFIG $clnconf_args --cppflags`
+ LIBCLN_LIBS=`$CLN_CONFIG $clnconf_args --libs`
+
+ cln_major_version=`$CLN_CONFIG $cln_args --version | \
+ sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
+ cln_minor_version=`$CLN_CONFIG $cln_args --version | \
+ sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
+ cln_micro_version=`$CLN_CONFIG $cln_config_args --version | \
+ sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
+ if test "x$enable_clntest" = "xyes" ; then
+ ac_save_CPPFLAGS="$CPPFLAGS"
+ ac_save_LIBS="$LIBS"
+ CPPFLAGS="$CPPFLAGS $LIBCLN_CPPFLAGS"
+ LIBS="$LIBS $LIBCLN_LIBS"
+dnl
+dnl Now check if the installed CLN is sufficiently new. (Also sanity
+dnl checks the results of cln-config to some extent
+dnl
+ rm -f conf.clntest
+ AC_TRY_RUN([
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <cln/config.h>
+
+int main ()
+{
+ int major, minor, micro;
+ char *tmp_version;
+
+ system("touch conf.clntest");
+
+ tmp_version = strdup("$min_cln_version");
+ if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, µ) != 3) {
+ printf("%s, bad version string\n", "$min_cln_version");
+ exit(1);
+ }
+
+ if (($cln_major_version > major) ||
+ (($cln_major_version == major) && ($cln_minor_version > minor)) ||
+ (($cln_major_version == major) && ($cln_minor_version == minor) && ($cln_micro_version >= micro))) {
+ if ((CL_VERSION_MAJOR == $cln_major_version) &&
+ (CL_VERSION_MINOR == $cln_minor_version) &&
+ (CL_VERSION_PATCHLEVEL == $cln_micro_version)) {
+ return 0;
+ } else {
+ printf("\n*** 'cln-config --version' returned %d.%d.%d, but the header file I found\n", $cln_major_version, $cln_minor_version, $cln_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. Please inquire and consider reinstalling CLN.\n");
+ return 1;
+ }
+ } else {
+ printf("\n*** 'cln-config --version' returned %d.%d.%d, but the minimum version\n", $cln_major_version, $cln_minor_version, $cln_micro_version);
+ printf("*** of CLN required is %d.%d.%d. If cln-config is correct, then it is\n", major, minor, micro);
+ printf("*** best to upgrade to the required version.\n");
+ printf("*** If cln-config was wrong, set the environment variable CLN_CONFIG\n");
+ printf("*** to point to the correct copy of cln-config, and remove the file\n");
+ printf("*** config.cache before re-running configure\n");
+ return 1;
+ }
+}
+],, no_cln=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
+ CPPFLAGS="$ac_save_CPPFLAGS"
+ LIBS="$ac_save_LIBS"
+ fi
+ fi
+ if test "x$no_cln" = x ; then
+ AC_MSG_RESULT(yes)
+ ifelse([$2], , :, [$2])
+ else
+ AC_MSG_RESULT(no)
+ if test "$CLN_CONFIG" = "no" ; then
+ 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."
+ else
+ if test -f conf.clntest ; then
+ :
+ else
+ echo "*** Could not run CLN test program, checking why..."
+ CPPFLAGS="$CFLAGS $LIBCLN_CPPFLAGS"
+ LIBS="$LIBS $LIBCLN_LIBS"
+ AC_TRY_LINK([
+#include <stdio.h>
+#include <cln/cln.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 "***"
+ echo "*** If you have an old version installed, it is best to remove it, although"
+ echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
+ [ 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
+ fi
+ LIBCLN_CPPFLAGS=""
+ LIBCLN_LIBS=""
+ ifelse([$3], , :, [$3])
+ fi
+ AC_SUBST(LIBCLN_CPPFLAGS)
+ AC_SUBST(LIBCLN_LIBS)
+ rm -f conf.clntest
+])
public directory as well (normally @code{/usr/local/lib}), hence when
linking a CLN application it is sufficient to give the flag @code{-lcln}.
+Since CLN version 1.1, there are two tools to make the creation of
+software packages that use CLN easier:
+@itemize @bullet
+@item
+@cindex @code{cln-config}
+@code{cln-config} is a shell script that you can use to determine the
+compiler and linker command line options required to compile and link a
+program with CLN. Start it with @code{--help} to learn about its options
+or consult the manpage that comes with it.
+@item
+@cindex @code{AC_PATH_LIBCLN}
+@code{AC_PATH_LIBCLN} is for packages configured using GNU automake.
+The synopsis is:
+@example
+@code{AC_PATH_LIBCLN([@var{MINIMUM-VERSION}, [@var{ACTION-IF-FOUND} [, @var{ACTION-IF-NOT-FOUND}]]])}
+@end example
+This macro determines the location of CLN using @code{cln-config}, which
+is either found in the user's path, or from the environment variable
+@code{CLN_CONFIG}. It tests the installed libraries to make sure that
+their version is later than @var{MINIMUM-VERSION} (a default version
+will be used if not specified). If the required version was found, sets
+the @env{CLNLIB_CPPFLAGS} and the @env{CLNLIB_LIBS} variables. This
+macro is in the file @file{cln.m4} which is installed in
+@file{$datadir/aclocal}. Note that if automake was installed with a
+different @samp{--prefix} than CLN, you will either have to manually
+move @file{cln.m4} to automake's @file{$datadir/aclocal}, or give
+aclocal the @samp{-I} option when running it. Here is a possible example
+to be included in your package's @file{configure.in}:
+@example
+AC_PATH_LIBCLN(1.1.0, [
+ LIBS="$LIBS $LIBCLN_LIBS"
+ CPPFLAGS="$CPPFLAGS $LIBCLN_CPPFLAGS"
+], AC_MSG_ERROR([No suitable installed version of CLN could be found.]))
+@end example
+@end itemize
+
@section Compatibility to old CLN versions
@cindex namespace
git://www.ginac.de / cln.git / commitdiff