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Date: Thu, 18 Oct 2018 19:54:49 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Alexey Brodkin <abrodkin@...opsys.com>, Masahiro Yamada <yamada.masahiro@...ionext.com>, Rob Herring <robh@...nel.org>, Vineet Gupta <vgupta@...opsys.com> Subject: [PATCH 4.14 34/41] ARC: build: Dont set CROSS_COMPILE in archs Makefile 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Alexey Brodkin <abrodkin@...opsys.com> commit 40660f1fcee8d524a60b5101538e42b1f39f106d upstream. There's not much sense in doing that because if user or his build-system didn't set CROSS_COMPILE we still may very well make incorrect guess. But as it turned out setting CROSS_COMPILE is not as harmless as one may think: with recent changes that implemented automatic discovery of __host__ gcc features unconditional setup of CROSS_COMPILE leads to failures on execution of "make xxx_defconfig" with absent cross-compiler, for more info see [1]. Set CROSS_COMPILE as well gets in the way if we want only to build .dtb's (again with absent cross-compiler which is not really needed for building .dtb's), see [2]. Note, we had to change LIBGCC assignment type from ":=" to "=" so that is is resolved on its usage, otherwise if it is resolved at declaration time with missing CROSS_COMPILE we're getting this error message from host GCC: | gcc: error: unrecognized command line option -mmedium-calls | gcc: error: unrecognized command line option -mno-sdata [1] http://lists.infradead.org/pipermail/linux-snps-arc/2018-September/004308.html [2] http://lists.infradead.org/pipermail/linux-snps-arc/2018-September/004320.html Signed-off-by: Alexey Brodkin <abrodkin@...opsys.com> Cc: Masahiro Yamada <yamada.masahiro@...ionext.com> Cc: Rob Herring <robh@...nel.org> Signed-off-by: Vineet Gupta <vgupta@...opsys.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- arch/arc/Makefile | 10 +--------- 1 file changed, 1 insertion(+), 9 deletions(-) --- a/arch/arc/Makefile +++ b/arch/arc/Makefile @@ -6,14 +6,6 @@ # published by the Free Software Foundation. # -ifeq ($(CROSS_COMPILE),) -ifndef CONFIG_CPU_BIG_ENDIAN -CROSS_COMPILE := arc-linux- -else -CROSS_COMPILE := arceb-linux- -endif -endif - KBUILD_DEFCONFIG := nsim_700_defconfig cflags-y += -fno-common -pipe -fno-builtin -mmedium-calls -D__linux__ @@ -73,7 +65,7 @@ ldflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB # --build-id w/o "-marclinux". Default arc-elf32-ld is OK ldflags-$(upto_gcc44) += -marclinux -LIBGCC := $(shell $(CC) $(cflags-y) --print-libgcc-file-name) +LIBGCC = $(shell $(CC) $(cflags-y) --print-libgcc-file-name) # Modules with short calls might break for calls into builtin-kernel KBUILD_CFLAGS_MODULE += -mlong-calls -mno-millicode
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