misc: Introduce a --enable-coverage mode to build with gprof coverage
This adds a test coverage build. One can use gcov and lcov on the
resulting data afterwards to see which code paths were executed and
which were not.
diff --git a/openbsc/tests/db/Makefile.am b/openbsc/tests/db/Makefile.am
index 6eb9180..a7bed85 100644
--- a/openbsc/tests/db/Makefile.am
+++ b/openbsc/tests/db/Makefile.am
@@ -1,5 +1,6 @@
INCLUDES = $(all_includes) -I$(top_srcdir)/include
-AM_CFLAGS=-Wall -ggdb3 $(LIBOSMOCORE_CFLAGS)
+AM_CFLAGS=-Wall -ggdb3 $(LIBOSMOCORE_CFLAGS) $(COVERAGE_CFLAGS)
+AM_LDFLAGS = $(COVERAGE_LDFLAGS)
noinst_PROGRAMS = db_test