[PATCH v3 4/7] Makefile: Add coverage-report-cover-db target

["Ævar Arnfjörð Bjarmason" <avarab@gmail.com>]

Add a target to convert the *.gcov files to a Devel::Cover
database. That database can subsequently be formatted by the cover(1)
tool which is included with Devel::Cover.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 .gitignore |    1 +
 Makefile   |    4 ++++
 2 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/.gitignore b/.gitignore
index 57f79ef..d8bd555 100644
--- a/.gitignore
+++ b/.gitignore
@@ -185,6 +185,7 @@
 *.gcno
 *.gcov
 /coverage-untested-functions
+/cover_db/
 *+
 /config.mak
 /autom4te.cache
diff --git a/Makefile b/Makefile
index 40453f1..1d721ef 100644
--- a/Makefile
+++ b/Makefile
@@ -2287,6 +2287,7 @@ coverage-clean:
 	$(RM) $(addsuffix *.gcda,$(object_dirs))
 	$(RM) $(addsuffix *.gcno,$(object_dirs))
 	$(RM) coverage-untested-functions
+	$(RM) -r cover_db/
 
 COVERAGE_CFLAGS = $(CFLAGS) -O0 -ftest-coverage -fprofile-arcs
 COVERAGE_LDFLAGS = $(CFLAGS)  -O0 -lgcov
@@ -2306,3 +2307,6 @@ coverage-untested-functions: coverage-report
 	grep '^function.*called 0 ' *.c.gcov \
 		| sed -e 's/\([^:]*\)\.gcov: *function \([^ ]*\) called.*/\1: \2/' \
 		> coverage-untested-functions
+
+cover_db: coverage-report
+	gcov2perl -db cover_db *.gcov
-- 
1.7.0.4