mk: pass CROSS_COMPILE when compiling kernel modules

Pass CROSS_COMPILE to the kernel build system when compiling kernel
modules. Although we export CC etc. the top level kernel Makefile will
override the environment. As a result it will end up using wrong tools
if cross-compilation is desired but CROSS_COMPILE is not set.

Signed-off-by: Aaro Koskinen <aaro.koskinen@nsn.com>
Acked-by: Thomas Monjalon <thomas.monjalon@6wind.com>

diff --git a/mk/rte.module.mk b/mk/rte.module.mk
index 50c5c6f..ffbd94c 100644 (file)
--- a/mk/rte.module.mk
+++ b/mk/rte.module.mk
@@ -77,7 +77,8 @@ build: _postbuild
 # build module
 $(MODULE).ko: $(SRCS_LINKS)
        @if [ ! -f $(notdir Makefile) ]; then ln -nfs $(SRCDIR)/Makefile . ; fi
-       @$(MAKE) -C $(RTE_KERNELDIR) M=$(CURDIR) O=$(RTE_KERNELDIR)
+       @$(MAKE) -C $(RTE_KERNELDIR) M=$(CURDIR) O=$(RTE_KERNELDIR) \
+               CROSS_COMPILE=$(CROSS)
 
 # install module in $(RTE_OUTPUT)/kmod
 $(RTE_OUTPUT)/kmod/$(MODULE).ko: $(MODULE).ko