[grits] Add glut config check

[Andy Spencer <andys src gnome org>]

commit edde3a80620c29e81241facfb1be9cbe3f4d9d89
Author: Andy Spencer <andy753421 gmail com>
Date:   Wed Aug 24 17:40:41 2011 +0000

    Add glut config check

 configure.ac            |    5 +++++
 src/plugins/Makefile.am |    2 +-
 2 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index f77360d..ad20745 100644
--- a/configure.ac
+++ b/configure.ac
@@ -28,6 +28,11 @@ PKG_CHECK_MODULES(CAIRO, cairo)
 PKG_CHECK_MODULES(GTK,   gtk+-2.0 >= 2.16)
 PKG_CHECK_MODULES(SOUP,  libsoup-2.4 >= 2.26)
 
+# Check for glut for example plugin
+AC_CHECK_LIB(glut, glutSolidTeapot, GLUT_LIBS="-lglut")
+AM_CONDITIONAL(HAVE_GLUT, test "$GLUT_LIBS" != "")
+AC_SUBST(GLUT_LIBS)
+
 # Test for Windows vs. Unix
 case "${host}" in
 	*mingw32*) WIN32="yes" ;;
diff --git a/src/plugins/Makefile.am b/src/plugins/Makefile.am
index 1abf428..8e6f5f6 100644
--- a/src/plugins/Makefile.am
+++ b/src/plugins/Makefile.am
@@ -14,7 +14,7 @@ map_la_SOURCES      = map.c  map.h
 env_la_SOURCES      = env.c  env.h
 test_la_SOURCES     = test.c test.h
 
-if NOTWIN32
+if HAVE_GLUT
 noinst_LTLIBRARIES  = teapot.la
 teapot_la_SOURCES   = \
 	$(top_srcdir)/examples/plugin/teapot.c \