Mac: update build.sh to hack around autotools problem

For reasons I cannot explain, running configure for libdivecomputer claims that
certain feature tests pass, even though those features demonstrably aren't
there. This is happening for two compiler warning flags (-Wrestrict &
-Wno-unused-but-set-variable) as well as the test for clock_gettime.

To work around this, we manually edit the config.h file and the created
Makefile before building libdivecomputer.

This happened on macOS 10.11.6 with clang-800.0.42.1 (part of Xcode 8.2.1).

Tangentially related to:
See #1263

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/scripts/build.sh b/scripts/build.sh
index da9e192e5..f0f3f2f61 100755
--- a/scripts/build.sh
+++ b/scripts/build.sh
@@ -362,6 +362,16 @@ if [ ! -f ../configure ] ; then
 	autoreconf --install ..
 fi
 CFLAGS="$OLDER_MAC -I$INSTALL_ROOT/include $LIBDC_CFLAGS" ../configure --prefix=$INSTALL_ROOT --disable-examples
+if [ $PLATFORM = Darwin ] ; then
+	# it seems that on my Mac some of the configure tests for libdivecomputer
+	# pass even though the feature tested for is actually missing
+	# let's hack around that
+	sed -i .bak 's/^#define HAVE_CLOCK_GETTIME 1/\/* #undef HAVE_CLOCK_GETTIME *\//' config.h
+	for i in $(find . -name Makefile)
+	do
+		sed -i .bak 's/-Wrestrict//;s/-Wno-unused-but-set-variable//' $i
+	done
+fi
 make -j4
 make install