build-sys: allow passing extra flags to the module build process.

diff --git a/configure.ac b/configure.ac
index 73dc344..1fccc8a 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -62,6 +62,14 @@ AC_FUNC_REALLOC
 AC_FUNC_STRNLEN
 AC_CHECK_FUNCS([ftruncate gettimeofday isascii memset munmap pow select socket strchr strdup strerror strstr strtol])
 
+# Check if any flags need to be passed on to the kernel module build.
+AC_ARG_ENABLE(kmod-flags,
+              [  --enable-kmod-flags      pass the given flags to the module build process],
+             [IGB_KMOD_BUILD_FLAGS="$enableval"], [])
+
+AC_SUBST(IGB_KMOD_BUILD_FLAGS)
+
+
 AC_CONFIG_FILES([Makefile
                  kmod/Makefile
                  igb.pc])

diff --git a/kmod/Makefile.am b/kmod/Makefile.am
index d27c626..3151f1f 100644 (file)
--- a/kmod/Makefile.am
+++ b/kmod/Makefile.am
@@ -1,5 +1,5 @@
 all:
-       $(MAKE) -C igb
+       $(MAKE) V=1 -C igb $(IGB_KMOD_BUILD_FLAGS)
 
 install:
        $(MAKE) -C igb install