diff mbox series

ARM: pass -msoft-float to gcc earlier

Message ID 20200527134946.1034391-1-arnd@arndb.de (mailing list archive)
State New, archived
Headers show
Series ARM: pass -msoft-float to gcc earlier | expand

Commit Message

Arnd Bergmann May 27, 2020, 1:49 p.m. UTC 
Szabolcs Nagy ran into a kernel build failure with a custom gcc
toochain that sets -mfpu=auto -mfloat-abi-hard:

 /tmp/ccmNdcdf.s:1898: Error: selected processor does not support `cpsid i' in ARM mode

The problem is that $(call cc-option, -march=armv7-a) fails before the
kernel overrides the gcc options to also pass -msoft-float.

Move the option to the beginning the Makefile, before we call
cc-option for the first time.

Reported-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87302
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm/Makefile | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index fcd40c5bfd94..9804f8f61e67 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -16,6 +16,8 @@  LDFLAGS_vmlinux	+= --be8
 KBUILD_LDFLAGS_MODULE	+= --be8
 endif
 
+KBUILD_CFLAGS	+= -msoft-float
+
 ifeq ($(CONFIG_CPU_32v4),y)
 LDFLAGS_vmlinux	+= $(call ld-option,--fix-v4bx)
 LDFLAGS_MODULE	+= $(call ld-option,--fix-v4bx)
@@ -138,7 +140,7 @@  AFLAGS_ISA	:=$(CFLAGS_ISA)
 endif
 
 # Need -Uarm for gcc < 3.x
-KBUILD_CFLAGS	+=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
+KBUILD_CFLAGS	+=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -Uarm
 KBUILD_AFLAGS	+=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float
 
 CHECKFLAGS	+= -D__arm__