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.

8 files changed, 28 insertions, 12 deletions

diff --git a/openbsc/configure.in b/openbsc/configure.in
index f98bb709e..8bbfcf8ca 100644
--- a/openbsc/configure.in
+++ b/openbsc/configure.in
@@ -62,6 +62,20 @@ AC_COMPILE_IFELSE([char foo;],
 CFLAGS="$saved_CFLAGS"
 AC_SUBST(SYMBOL_VISIBILITY)
 
+# Coverage build taken from WebKit's configure.in
+AC_MSG_CHECKING([whether to enable code coverage support])
+AC_ARG_ENABLE(coverage,
+              AC_HELP_STRING([--enable-coverage],
+                             [enable code coverage support [default=no]]),
+              [],[enable_coverage="no"])
+AC_MSG_RESULT([$enable_coverage])
+if test "$enable_coverage" = "yes"; then
+   COVERAGE_CFLAGS="-ftest-coverage -fprofile-arcs"
+   COVERAGE_LDFLAGS="-ftest-coverage -fprofile-arcs"
+   AC_SUBST([COVERAGE_CFLAGS])
+   AC_SUBST([COVERAGE_LDFLAGS])
+fi
+
 
 dnl Generate the output
 AM_CONFIG_HEADER(bscconfig.h)
diff --git a/openbsc/src/Makefile.am b/openbsc/src/Makefile.am
index 1566af955..2766d938c 100644
--- a/openbsc/src/Makefile.am
+++ b/openbsc/src/Makefile.am
@@ -1,6 +1,6 @@
 INCLUDES = $(all_includes) -I$(top_srcdir)/include -I$(top_builddir)
-AM_CFLAGS=-Wall $(LIBOSMOCORE_CFLAGS) $(LIBOSMOVTY_CFLAGS)
-AM_LDFLAGS = $(LIBOSMOCORE_LIBS)
+AM_CFLAGS=-Wall $(LIBOSMOCORE_CFLAGS) $(LIBOSMOVTY_CFLAGS) $(COVERAGE_CFLAGS)
+AM_LDFLAGS = $(LIBOSMOCORE_LIBS) $(COVERAGE_LDFLAGS)
 
 # build current directory before building gprs
 SUBDIRS = . ipaccess gprs
diff --git a/openbsc/src/bsc/Makefile.am b/openbsc/src/bsc/Makefile.am
index 3bd47b7a6..d304628f5 100644
--- a/openbsc/src/bsc/Makefile.am
+++ b/openbsc/src/bsc/Makefile.am
@@ -1,6 +1,6 @@
 INCLUDES = $(all_includes) -I$(top_srcdir)/include -I$(top_builddir)
-AM_CFLAGS=-Wall $(LIBOSMOCORE_CFLAGS) $(LIBOSMOVTY_CFLAGS) $(LIBOSMOSCCP_CFLAGS)
-AM_LDFLAGS = $(LIBOSMOCORE_LIBS) $(LIBOSMOVTY_LIBS)
+AM_CFLAGS=-Wall $(LIBOSMOCORE_CFLAGS) $(LIBOSMOVTY_CFLAGS) $(LIBOSMOSCCP_CFLAGS) $(COVERAGE_CFLAGS)
+AM_LDFLAGS = $(LIBOSMOCORE_LIBS) $(LIBOSMOVTY_LIBS) $(COVERAGE_LDFLAGS)
 
 bin_PROGRAMS = osmo-bsc
 
diff --git a/openbsc/src/gprs/Makefile.am b/openbsc/src/gprs/Makefile.am
index a85ff1934..fe344944c 100644
--- a/openbsc/src/gprs/Makefile.am
+++ b/openbsc/src/gprs/Makefile.am
@@ -1,6 +1,6 @@
 INCLUDES = $(all_includes) -I$(top_srcdir)/include -I$(top_builddir)
-AM_CFLAGS=-Wall -fno-strict-aliasing $(LIBOSMOCORE_CFLAGS) $(LIBOSMOVTY_CFLAGS)
-AM_LDFLAGS = $(LIBOSMOCORE_LIBS) $(LIBOSMOVTY_LIBS)
+AM_CFLAGS=-Wall -fno-strict-aliasing $(LIBOSMOCORE_CFLAGS) $(LIBOSMOVTY_CFLAGS) $(COVERAGE_CFLAGS)
+AM_LDFLAGS = $(LIBOSMOCORE_LIBS) $(LIBOSMOVTY_LIBS) $(COVERAGE_LDFLAGS)
 
 noinst_LIBRARIES = libgb.a
 noinst_HEADERS = gprs_sndcp.h
diff --git a/openbsc/src/ipaccess/Makefile.am b/openbsc/src/ipaccess/Makefile.am
index a7fc93fb1..7eb0243ae 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
 
diff --git a/openbsc/src/nat/Makefile.am b/openbsc/src/nat/Makefile.am
index c7c4b0e9f..5afcc2e7f 100644
--- a/openbsc/src/nat/Makefile.am
+++ b/openbsc/src/nat/Makefile.am
@@ -1,6 +1,6 @@
 INCLUDES = $(all_includes) -I$(top_srcdir)/include -I$(top_builddir)
-AM_CFLAGS=-Wall $(LIBOSMOCORE_CFLAGS) $(LIBOSMOVTY_CFLAGS) $(LIBOSMOSCCP_CFLAGS)
-AM_LDFLAGS = $(LIBOSMOCORE_LIBS) $(LIBOSMOVTY_LIBS)
+AM_CFLAGS=-Wall $(LIBOSMOCORE_CFLAGS) $(LIBOSMOVTY_CFLAGS) $(LIBOSMOSCCP_CFLAGS) $(COVERAGE_CFLAGS)
+AM_LDFLAGS = $(LIBOSMOCORE_LIBS) $(LIBOSMOVTY_LIBS) $(COVERAGE_LDFLAGS)
 
 bin_PROGRAMS = bsc_nat
 
diff --git a/openbsc/tests/bsc-nat/Makefile.am b/openbsc/tests/bsc-nat/Makefile.am
index fc77557d0..0ad64c359 100644
--- a/openbsc/tests/bsc-nat/Makefile.am
+++ b/openbsc/tests/bsc-nat/Makefile.am
@@ -1,5 +1,6 @@
 INCLUDES = $(all_includes) -I$(top_srcdir)/include
-AM_CFLAGS=-Wall -ggdb3 $(LIBOSMOCORE_CFLAGS) $(LIBOSMOSCCP_CFLAGS)
+AM_CFLAGS=-Wall -ggdb3 $(LIBOSMOCORE_CFLAGS) $(LIBOSMOSCCP_CFLAGS) $(COVERAGE_CFLAGS)
+AM_LDFLAGS = $(COVERAGE_LDFLAGS)
 
 EXTRA_DIST = bsc_data.c
 
diff --git a/openbsc/tests/db/Makefile.am b/openbsc/tests/db/Makefile.am
index 6eb9180ce..a7bed85df 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