From e68baa746395f4d5c7b8ab16093c044026b2d1fd Mon Sep 17 00:00:00 2001
From: Dan Nicholson <dbn.lists@gmail.com>
Date: Fri, 28 Sep 2012 05:45:37 -0700
Subject: Add optional usage of gcov for test coverage

Use gcov to find how much code coverage our current testing gets. This
can be enabled by passing --with-gcov to configure and running "make
gcov". This is limited to gcc. Here's a run from the current code (for
some reason, gcov insists on profiling gstring.h).

/usr/bin/gcov pkg.h pkg.c parse.h parse.c main.c
File 'pkg.c'
Lines executed:73.16% of 611
pkg.c:creating 'pkg.c.gcov'

File '/usr/include/glib-2.0/glib/gstring.h'
Lines executed:100.00% of 6
/usr/include/glib-2.0/glib/gstring.h:creating 'gstring.h.gcov'

File 'parse.c'
Lines executed:79.67% of 492
parse.c:creating 'parse.c.gcov'

File 'main.c'
Lines executed:57.34% of 293
main.c:creating 'main.c.gcov'
---
 Makefile.am | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'Makefile.am')

diff --git a/Makefile.am b/Makefile.am
index 0e58512..9c224ac 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -24,6 +24,7 @@ endif
 
 AM_CFLAGS = \
 	$(WARN_CFLAGS) \
+	$(GCOV_CFLAGS) \
 	$(GLIB_CFLAGS)
 
 bin_PROGRAMS = pkg-config
@@ -42,6 +43,12 @@ dist_doc_DATA = pkg-config-guide.html
 dist_man_MANS = pkg-config.1
 EXTRA_DIST = README.win32
 
+# gcov test coverage
+gcov:
+	-$(MAKE) $(AM_MAKEFLAGS) -k check
+	$(GCOV) $(pkg_config_SOURCES)
+CLEANFILES = *.gcda *.gcno *.gcov
+
 # Since we can't always have glib in DIST_SUBDIRS, we need to make sure
 # glib is configured when we want to run dist. Unfortunately, there's no
 # DIST_CONFIGURE_FLAGS.
-- 
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