From 17549dfdf7cf00e278e9ce5a89c205bf619d0556 Mon Sep 17 00:00:00 2001
From: Jan Nieuwenhuizen <janneke@gnu.org>
Date: Sun, 8 Jun 2003 12:04:30 +0000
Subject: [PATCH] (STEPMAKE_CHECK_VERSION_SUPPORT): New function.
 (STEPMAKE_GETTEXT): If g++ >= 3.3, use gcc for gettext checking.

---
 ChangeLog           |  6 ++++++
 stepmake/aclocal.m4 | 42 +++++++++++++++++++++++++++++++++++++++---
 2 files changed, 45 insertions(+), 3 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 5b9ed9ec4c..0dba09ea85 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2003-06-08  Jan Nieuwenhuizen  <janneke@gnu.org>
+
+	* stepmake/aclocal.m4 (STEPMAKE_CHECK_VERSION_SUPPORT): New
+	function.
+	(STEPMAKE_GETTEXT): If g++ >= 3.3, use gcc for gettext checking.
+
 2003-06-08  Heikki Junes  <hjunes@cc.hut.fi>
 
 	* lilypond-indent.el: tune regexp for show-paren-function.
diff --git a/stepmake/aclocal.m4 b/stepmake/aclocal.m4
index a0ff389201..079bd0e4da 100644
--- a/stepmake/aclocal.m4
+++ b/stepmake/aclocal.m4
@@ -92,7 +92,23 @@ AC_DEFUN(STEPMAKE_CHECK_VERSION, [
     req=`STEPMAKE_NUMERIC_VERSION($3)`
     AC_MSG_RESULT([$ver])
     if test "$num" -lt "$req"; then
-	STEPMAKE_ADD_ENTRY($2, ["$r $3 (installed: $ver)"])
+	STEPMAKE_ADD_ENTRY($2, ["$r >= $3 (installed: $ver)"])
+    fi
+])
+
+# Check version of program ($1)
+# If version is greater than or equals requested ($3),
+# add entry to unsupported list ($2, 'UNSUPPORTED')
+AC_DEFUN(STEPMAKE_CHECK_VERSION_SUPPORT, [
+    r="`eval echo '$'"$1"`"
+    AC_MSG_CHECKING([$r version])
+    exe=`STEPMAKE_GET_EXECUTABLE($r)`
+    ver=`STEPMAKE_GET_VERSION($exe)`
+    num=`STEPMAKE_NUMERIC_VERSION($ver)`
+    sup=`STEPMAKE_NUMERIC_VERSION($3)`
+    AC_MSG_RESULT([$ver])
+    if test "$num" -ge "$sup"; then
+	STEPMAKE_ADD_ENTRY($2, ["$r < $3 (installed: $ver)"])
     fi
 ])
 
@@ -275,8 +291,7 @@ AC_DEFUN(STEPMAKE_END, [
     AC_SUBST(REQUIRED)
     
     AC_CONFIG_FILES([$CONFIGFILE.make:config.make.in])
-AC_OUTPUT
-
+    AC_OUTPUT
     
     if test -n "$OPTIONAL"; then
 	echo
@@ -288,6 +303,11 @@ AC_OUTPUT
         echo "ERROR: Please install required programs: $REQUIRED"
     fi
     
+    if test -n "$UNSUPPORTED"; then
+	echo
+        echo "ERROR: Please use older version of programs: $UNSUPPORTED"
+    fi
+    
     if test -n "$OPTIONAL$REQUIRED"; then
 	echo
 	echo "See INSTALL.txt for more information on how to build $PACKAGE_NAME"
@@ -376,8 +396,24 @@ AC_DEFUN(STEPMAKE_GETTEXT, [
     
     AC_SUBST(localedir)
     AC_DEFINE_UNQUOTED(LOCALEDIR, ["${LOCALEDIR}"])
+    # ouch.  autoconf <= 2.57's gettext check fails for
+    # g++ >= 3.3 (with -std=gnu++98, the default).
+    # While the check is OK for g++ -std=c++98,
+    # LilyPond needs GNU g++, so who is to blame here?
+    # Use a workaround until this is resolved:
+    # for g++ >= 3.3, select C language.
+    GCC_UNSUPPORTED=
+    STEPMAKE_CHECK_VERSION_SUPPORT(CXX, GCC_UNSUPPORTED, 3.3)
+    if test -n "$GCC_UNSUPPORTED"; then
+	AC_MSG_WARN([autoconf <= 2.57 with g++ >= 3.3 gettext test broken.])
+	AC_MSG_WARN([Trying gcc, cross thumbs.])
+	AC_LANG_PUSH(C)
+    fi
     AC_CHECK_LIB(intl, gettext)
     AC_CHECK_FUNCS(gettext)
+    if test -n "$GCC_UNSUPPORTED"; then
+	AC_LANG_POP(C)
+    fi
 ])
 
 
-- 
2.39.2