[dpdk-dev] [PATCH] Pass CC option when building kernel modules
Thomas Monjalon
thomas.monjalon at 6wind.com
Wed Oct 8 19:15:04 CEST 2014
2014-10-06 16:57, Sergio Gonzalez Monroy:
> At least on kernels 3.15 or newer, DPDK build is broken for CLANG target.
> The issue is that the kernel build system sets the flags before including
> DPDK makefile and therefore assumes the incorrect compiler.
>
> Signed-off-by: Sergio Gonzalez Monroy <sergio.gonzalez.monroy at intel.com>
> --- a/mk/rte.module.mk
> +++ b/mk/rte.module.mk
> @@ -78,7 +78,7 @@ build: _postbuild
> $(MODULE).ko: $(SRCS_LINKS)
> @if [ ! -f $(notdir Makefile) ]; then ln -nfs $(SRCDIR)/Makefile . ; fi
> @$(MAKE) -C $(RTE_KERNELDIR) M=$(CURDIR) O=$(RTE_KERNELDIR) \
> - CROSS_COMPILE=$(CROSS)
> + CC=$(KERNELCC) CROSS_COMPILE=$(CROSS)
> --- a/mk/target/generic/rte.vars.mk
> +++ b/mk/target/generic/rte.vars.mk
> @@ -149,4 +149,6 @@ endif
> export CFLAGS
> export LDFLAGS
>
> +else # ! ifeq ($(KERNELRELEASE),)
> +CC = $(KERNELCC)
> endif
Why is it needed here? Setting CC in rte.module.mk is not sufficient?
Thanks
--
Thomas
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