From 65b35343148ed6c1ca245ef5b2339f9bbf179252 Mon Sep 17 00:00:00 2001
From: Martin Baulig <martin@src.gnome.org>
Date: Fri, 5 Jun 1998 14:41:32 +0000
Subject: Copied from main trunk.

svn path=/branches/LIBGTOP_STABLE_0_20/; revision=238
---
 macros/gnome-guile-checks.m4 | 89 ++++++++++++++++++++++++++++++++++++++------
 1 file changed, 78 insertions(+), 11 deletions(-)

diff --git a/macros/gnome-guile-checks.m4 b/macros/gnome-guile-checks.m4
index df1e9f06..5651f4da 100644
--- a/macros/gnome-guile-checks.m4
+++ b/macros/gnome-guile-checks.m4
@@ -1,23 +1,90 @@
+dnl
+dnl GNOME_CHECK_GUILE (failflag)
+dnl
+dnl if failflag is "fail" then GNOME_CHECK_GUILE will abort if guile is not found.
+dnl
+
 AC_DEFUN([GNOME_CHECK_GUILE],
 [
+	saved_ldflags="$LDFLAGS"
+	saved_cppflags="$CPPFLAGS"
+	LDFLAGS="$LDFLAGS $GNOME_LIBDIR"
+
 	AC_CHECK_LIB(qthreads,main,[
-	QTTHREADS_LIB="-lqthreads"
-	AC_CHECK_LIB(termcap,main,TERMCAP_LIB="-ltermcap")
-	AC_CHECK_LIB(readline,main,READLINE_LIB="-lreadline")
+		QTTHREADS_LIB="-lqthreads"
 	],[
-	AC_CHECK_LIB(qt, qt_null, QTTHREADS_LIB="-lqt")
+		AC_CHECK_LIB(qt, qt_null, QTTHREADS_LIB="-lqt")
 	],$LIBS)
+	AC_SUBST(QTTHREADS_LIB)
+
+	AC_CHECK_LIB(termcap,main,TERMCAP_LIB="-ltermcap")
+	AC_CHECK_LIB(readline,main,READLINE_LIB="-lreadline",,$TERMCAP_LIB)
+
 	AC_SUBST(TERMCAP_LIB)
 	AC_SUBST(READLINE_LIB)
-	AC_SUBST(QTTHREADS_LIB)
 
-	AC_CHECK_LIB(guile, scm_boot_guile,[
-	    GUILE_LIBS="-lguile"
-	    ac_cv_guile_found=yes
+	AC_CHECK_PROG(BUILD_GUILE, build-guile, yes, no)
+
+	if test "x$BUILD_GUILE" = "xyes"; then
+		AC_MSG_CHECKING(whether build-guile works)
+		if test x`build-guile --version >/dev/null 2>&1 || \
+				echo no` = xno; then
+			BUILD_GUILE=no
+		fi
+		AC_MSG_RESULT($BUILD_GUILE)
+	fi
+
+	AC_CHECK_LIB(m, sin)
+
+	if test "x$BUILD_GUILE" = "xyes"; then
+		AC_MSG_CHECKING(for guile libraries)
+		GUILE_LIBS="-L`build-guile info libdir` `build-guile link`"
+		AC_MSG_RESULT($GUILE_LIBS)
+		AC_MSG_CHECKING(for guile headers)
+		GUILE_INCS="-I`build-guile info includedir`"
+		AC_MSG_RESULT($GUILE_INCS)
+	else
+		GUILE_LIBS="$GNOME_LIBDIR"
+		GUILE_INCS="$GNOME_INCLUDEDIR"
+		AC_CHECK_LIB(rx, main, GUILE_LIBS="-lrx $GUILE_LIBS")
+		AC_CHECK_LIB(qt, main, GUILE_LIBS="-lqt $GUILE_LIBS")
+		AC_CHECK_LIB(dl, dlopen, GUILE_LIBS="-ldl $GUILE_LIBS")
+		GUILE_LIBS="-lguile $GUILE_LIBS $QTTHREADS_LIB $TERMCAP_LIB $READLINE_LIB"
+	fi
+
+	AC_SUBST(GUILE_LIBS)
+	AC_SUBST(GUILE_INCS)
+
+	LDFLAGS="$saved_ldflags $GUILE_LIBS"
+	CPPFLAGS="$saved_cppflags $GUILE_INCS"
+
+	AC_MSG_CHECKING(whether guile works)
+	AC_TRY_LINK([
+		#include <libguile.h>
+		#include <guile/gh.h>
 	],[
-	    AC_MSG_WARN(Can not find Guile 1.2 on the system)
-	    ac_cv_guile_found=no
-	], $QTTHREADS_LIB $LIBS)
+		gh_eval_str("(newline)");
+		scm_boot_guile(0,NULL,NULL,NULL);
+	],[
+		ac_cv_guile_found=yes
+		AC_DEFINE(HAVE_GUILE)
+	],[
+		ac_cv_guile_found=no
+	])
+	AC_MSG_RESULT($ac_cv_guile_found)
+
+	if test x$ac_cv_guile_found = xno ; then
+		if test x$1 = xfail ; then
+		  AC_MSG_ERROR(Can not find Guile 1.2 on this system)
+		else
+		  AC_MSG_WARN(Can not find Guile 1.2 on this system)
+		fi
+		ac_cv_guile_found=no
+	fi
+
+	LDFLAGS="$saved_ldflags"
+	CPPFLAGS="$saved_cppflags"
+
 	AC_SUBST(GUILE_LIBS)
 	AM_CONDITIONAL(GUILE, test x$ac_cv_guile_found = xyes)
 ])
-- 
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