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/src/ipaccess/Makefile.am b/openbsc/src/ipaccess/Makefile.am
index a7fc93f..7eb0243 100644
--- a/openbsc/src/ipaccess/Makefile.am
+++ b/openbsc/src/ipaccess/Makefile.am
@@ -1,6 +1,6 @@
INCLUDES = $(all_includes) -I$(top_srcdir)/include -I$(top_builddir)
-AM_CFLAGS=-Wall $(LIBOSMOCORE_CFLAGS)
-AM_LDFLAGS = $(LIBOSMOCORE_LIBS)
+AM_CFLAGS=-Wall $(LIBOSMOCORE_CFLAGS) $(COVERAGE_CFLAGS)
+AM_LDFLAGS = $(LIBOSMOCORE_LIBS) $(COVERAGE_LDFLAGS)
sbin_PROGRAMS = ipaccess-find ipaccess-config ipaccess-proxy