From b06f6e9d4158771ee180d60e3d3998771b724cb3 Mon Sep 17 00:00:00 2001
From: Peter Hutterer <peter.hutterer@who-t.net>
Date: Wed, 5 Jun 2013 17:30:08 +1000
Subject: [PATCH] Hook up gcov

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
---
 configure.ac         | 20 ++++++++++++++++++++
 libevdev/Makefile.am |  4 +++-
 test/Makefile.am     | 52 ++++++++++++++++++++++++++++++++++++++++++++++++----
 3 files changed, 71 insertions(+), 5 deletions(-)

diff --git a/configure.ac b/configure.ac
index 623d457..d296f49 100644
--- a/configure.ac
+++ b/configure.ac
@@ -50,6 +50,26 @@ fi
 AM_CONDITIONAL([HAVE_ASCIIDOC], [test "$have_asciidoc" = yes])
 
 
+AC_MSG_CHECKING([whether to build with gcov])
+AC_ARG_ENABLE([gcov],
+	      [AS_HELP_STRING([--enable-gcov],
+			      [Whether to enable coverage testing (default:enabled)])]
+	      [],
+	      [enable_gcov=yes],
+	      )
+AS_IF([test "x$enable_gcov" != "xno"],
+      [
+       GCOV_CFLAGS="-fprofile-arcs -ftest-coverage"
+       GCOV_LDFLAGS="-fprofile-arcs -ftest-coverage"
+       enable_gcov=yes
+       ],
+)
+
+AM_CONDITIONAL([GCOV_ENABLED], [test "x$enable_gcov" != "xno"])
+AC_SUBST([GCOV_CFLAGS])
+AC_SUBST([GCOV_LDFLAGS])
+AC_MSG_RESULT([$enable_gcov])
+
 AC_CONFIG_FILES([Makefile
 		 libevdev/Makefile
 		 man/Makefile
diff --git a/libevdev/Makefile.am b/libevdev/Makefile.am
index 8cffc2e..d780267 100644
--- a/libevdev/Makefile.am
+++ b/libevdev/Makefile.am
@@ -1,12 +1,14 @@
 lib_LTLIBRARIES=libevdev.la
 
+AM_CPPFLAGS = $(GCOV_CFLAGS)
+
 libevdev_la_SOURCES = \
                    libevdev.h \
                    libevdev-int.h \
                    libevdev-util.h \
                    libevdev.c
 
-libevdev_la_LDFLAGS = -version-info $(LIBEVDEV_LT_VERSION) -export-symbols-regex '^libevdev_'
+libevdev_la_LDFLAGS = -version-info $(LIBEVDEV_LT_VERSION) -export-symbols-regex '^libevdev_' $(GCOV_LDFLAGS)
 
 libevdevincludedir = $(includedir)/libevdev-1.0/libevdev
 libevdevinclude_HEADERS = libevdev.h
diff --git a/test/Makefile.am b/test/Makefile.am
index 3ed6850..a4d5d8f 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -8,13 +8,57 @@ libevdev_sources = $(top_srcdir)/libevdev/libevdev.c \
 		   $(top_srcdir)/libevdev/libevdev-int.h
 common_sources = $(libevdev_sources) test-common-uinput.c test-common-uinput.h
 
-AM_CPPFLAGS = -I$(top_srcdir)/libevdev $(CHECK_CFLAGS)
+AM_CPPFLAGS = -I$(top_srcdir)/libevdev $(CHECK_CFLAGS) $(GCOV_CFLAGS)
+
+
 
 test_event_names_SOURCES = test-event-names.c $(common_sources)
-test_event_names_LDADD = $(CHECK_LIBS)
+test_event_names_LDADD =  $(CHECK_LIBS) $(GCOV_LDFLAGS)
 
 test_libevdev_init_SOURCES = test-libevdev-init.c $(common_sources)
-test_libevdev_init_LDADD = $(CHECK_LIBS)
+test_libevdev_init_LDADD = $(CHECK_LIBS) $(GCOV_LDFLAGS)
 
 test_libevdev_has_event_SOURCES = test-libevdev-has-event.c $(common_sources)
-test_libevdev_has_event_LDADD = $(CHECK_LIBS)
+test_libevdev_has_event_LDADD = $(CHECK_LIBS) $(GCOV_LDFLAGS)
+
+if GCOV_ENABLED
+gcov-clean:
+	@rm -f *.gcov
+
+gcov-report.txt: gcov-clean check-TESTS
+	$(AM_V_GEN)(rm -rf $@; \
+		echo "========== coverage report ========" >> $@; \
+		for file in `find $(top_srcdir)/libevdev -name "*.c" -printf "%P\n"`; do \
+			gcov $$file > /dev/null; \
+			if test -f $$file.gcov; then \
+				total=`grep -v " -:" $$file.gcov | wc -l`; \
+				missing=`grep "#####" $$file.gcov | wc -l`; \
+				hit=$$((total - missing)); \
+				echo -e "$$file: total lines: $$total not tested: $$missing ($$((($$hit * 100)/$$total))%)"; \
+			fi \
+		done >> $@; \
+		echo "========== =============== ========" >> $@; \
+	)
+
+gcov: gcov-report.txt
+	@cat gcov-report.txt
+
+check-local: gcov
+
+else
+
+gcov-report.txt:
+	@true
+
+gcov:
+	@true
+
+gcov-clean:
+	@true
+
+endif
+
+.PHONY: gcov gcov-clean gcov-report.txt
+
+clean-local: gcov-clean
+	rm -f *.gcno *.gcda
-- 
2.7.4