[Minios-devel] [UNIKRAFT PATCH 12/13] arch/arm: Check gcc version and set processor flags for arm32

[Wei Chen <Wei.Chen@xxxxxxx>]

Similar to ARM64, the optimization processor flags have the minimum
gcc version requirement. So we still need to check the GCC version
for arm32. As we have already defined a makefile function to do such
task, so we can use this function for arm32 too.

Signed-off-by: Wei Chen <Wei.Chen@xxxxxxx>
---
 arch/arm/arm/Makefile.uk | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/arch/arm/arm/Makefile.uk b/arch/arm/arm/Makefile.uk
index a810257..f2493a6 100644
--- a/arch/arm/arm/Makefile.uk
+++ b/arch/arm/arm/Makefile.uk
@@ -5,12 +5,11 @@ CFLAGS   += -marm -fms-extensions
 CXXFLAGS += -D__ARM_32__
 CXXFLAGS += -marm -fms-extensions
 
-#-march=armv7-a
+# Set GCC flags for MARCH_ARM32_A20NEON. GCC supports -mcpu=cortex-a7 from 4.7
+$(eval $(call 
set_flags_for_valid_gcc,$(MARCH_ARM32_A20NEON),4,7,-mcpu=cortex-a7 
-mtune=cortex-a7 -mfpu=vfpv4-d16 -mfpu=neon-vfpv4 -funsafe-math-optimizations))
 
-CFLAGS-$(MARCH_ARM32_A20NEON)    += -mcpu=cortex-a7 -mtune=cortex-a7 
-mfpu=vfpv4-d16 -mfpu=neon-vfpv4 -funsafe-math-optimizations
-CXXFLAGS-$(MARCH_ARM32_A20NEON)  += -mcpu=cortex-a7 -mtune=cortex-a7 
-mfpu=vfpv4-d16 -mfpu=neon-vfpv4 -funsafe-math-optimizations
-CFLAGS-$(MARCH_ARM32_CORTEXA7)   += -mcpu=cortex-a7 -mtune=cortex-a7
-CXXFLAGS-$(MARCH_ARM32_CORTEXA7) += -mcpu=cortex-a7 -mtune=cortex-a
+# Set GCC flags for MARCH_ARM32_CORTEXA7. GCC supports -mcpu=cortex-a7 from 4.7
+$(eval $(call 
set_flags_for_valid_gcc,$(MARCH_ARM32_CORTEXA7),4,7,-mcpu=cortex-a7 
-mtune=cortex-a7))
 
 $(eval $(call addlib,libarmmath))
 LIBARMMATH_SRCS-$(ARCH_ARM_32) += $(UK_BASE)/arch/arm/arm/divsi3.S
-- 
2.7.4


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