[glibmm] tools: Improve the testheaders.sh script.

[Kjell Ahlstedt <kjellahl src gnome org>]

commit ab277aac48ded3783697c9642062109cbff58a3a
Author: Kjell Ahlstedt <kjell ahlstedt bredband net>
Date:   Tue May 21 16:19:36 2013 +0200

    tools: Improve the testheaders.sh script.
    
    * tools/test_scripts/testheaders.sh: Stop if pkg-config fails.

 ChangeLog                         |    6 ++++++
 tools/test_scripts/testheaders.sh |    5 +++++
 2 files changed, 11 insertions(+), 0 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index a586cf3..4c626ab 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2013-05-21  Kjell Ahlstedt  <kjell ahlstedt bredband net>
+
+       tools: Improve the testheaders.sh script.
+
+       * tools/test_scripts/testheaders.sh: Stop if pkg-config fails.
+
 2013-05-18  Kjell Ahlstedt  <kjell ahlstedt bredband net>
 
        tools: Add the testheaders.sh script.
diff --git a/tools/test_scripts/testheaders.sh b/tools/test_scripts/testheaders.sh
index f91a9f5..b6de397 100755
--- a/tools/test_scripts/testheaders.sh
+++ b/tools/test_scripts/testheaders.sh
@@ -60,6 +60,11 @@ do
 done
 
 CFLAGS="$idirs `pkg-config --cflags $pkg`"
+if [ $? -ne 0 ]
+then
+  echo "pkg-config failed"
+  usage
+fi
 echo CFLAGS=$CFLAGS
 
 # Compile the specified files