[libgsf] compilation: fix Gentoo issue with ACLOCAL_FLAGS.

[Morten Welinder <mortenw src gnome org>]

commit cb21acee6396d9e2d43a66ed650c8b49d7932a17
Author: Morten Welinder <terra gnome org>
Date:   Tue Apr 5 11:58:13 2011 -0400

    compilation: fix Gentoo issue with ACLOCAL_FLAGS.

 ChangeLog   |    5 +++++
 Makefile.am |    2 +-
 2 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index ad67037..0075a23 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2011-04-05  Morten Welinder  <terra gnome org>
+
+	* Makefile.am: ${ACLOCAL_FLAGS}, not $(ACLOCAL_FLAGS) which seems
+	to matter to Gentoo.  Fixes #645777.
+
 2011-03-28  Morten Welinder  <terra gnome org>
 
 	* configure.in: Implement --without-gconf (as opposed to looking
diff --git a/Makefile.am b/Makefile.am
index 4294bbe..e5ca6a9 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,4 +1,4 @@
-ACLOCAL_AMFLAGS = -I m4 $(ACLOCAL_FLAGS)
+ACLOCAL_AMFLAGS = -I m4 ${ACLOCAL_FLAGS}
 
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = libgsf-1.pc