Provide standard Makefile rules for clients of liblitmus

We avoid doing the same thing over and over in all repositories using
liblitmus if we just pull in common rules & configurations from
liblitmus. This gives us the ability to cross-compile for free.

1 files changed, 22 insertions, 0 deletions

diff --git a/inc/depend.makefile b/inc/depend.makefile
new file mode 100644
index 0000000..4d10534
--- /dev/null
+++ b/inc/depend.makefile
@@ -0,0 +1,22 @@
+# Generic dependency resolution. Part of liblitmus so that we don't have to
+#  carry it around in every project using liblitmus.
+
+obj-all = ${sort ${foreach target,${all},${obj-${target}}}}
+
+# rule to generate dependency files
+%.d: %.c
+        @set -e; rm -f $@; \
+                $(CC) -MM $(CPPFLAGS) $< > $@.$$$$; \
+                sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@.$$$$ > $@; \
+                rm -f $@.$$$$
+
+ifeq ($(MAKECMDGOALS),)
+MAKECMDGOALS += all
+endif
+
+ifneq ($(filter-out clean,$(MAKECMDGOALS)),)
+
+# Pull in dependencies.
+-include ${obj-all:.o=.d}
+
+endif