factor common GCC options check
PATCH 1/1 factor common GCC options check
Make the test for supported GCC options into a macro.
--
Brian Gerst
arch/i386/Makefile +8 -6
@@ -22,19 +22,21 @@ CFLAGS += -pipe +check_gcc = $(shell if $(CC) $(1) -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi) + # prevent gcc from keeping the stack 16 byte aligned -CFLAGS += $(shell if $(CC) -mpreferred-stack-boundary=2 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-mpreferred-stack-boundary=2"; fi) +CFLAGS += $(call check_gcc,-mpreferred-stack-boundary=2,) cflags-$(CONFIG_M386) += -march=i386 cflags-$(CONFIG_M486) += -march=i486 cflags-$(CONFIG_M586) += -march=i586 cflags-$(CONFIG_M586TSC) += -march=i586 -cflags-$(CONFIG_M586MMX) += $(shell if $(CC) -march=pentium-mmx -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-march=pentium-mmx"; else echo "-march=i586"; fi) +cflags-$(CONFIG_M586MMX) += $(call check_gcc,-march=pentium-mmx,-march=i586) cflags-$(CONFIG_M686) += -march=i686 -cflags-$(CONFIG_MPENTIUMIII) += $(shell if $(CC) -march=pentium3 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-march=pentium3"; else echo "-march=i686"; fi) -cflags-$(CONFIG_MPENTIUM4) += $(shell if $(CC) -march=pentium4 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-march=pentium4"; else echo "-march=i686"; fi) -cflags-$(CONFIG_MK6) += $(shell if $(CC) -march=k6 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-march=k6"; else echo "-march=i586"; fi) -cflags-$(CONFIG_MK7) += $(shell if $(CC) -march=athlon -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-march=athlon"; else echo "-march=i686 -malign-functions=4"; fi) +cflags-$(CONFIG_MPENTIUMIII) += $(call check_gcc,-march=pentium3,-march=i686) +cflags-$(CONFIG_MPENTIUM4) += $(call check_gcc,-march=pentium4,-march=i686) +cflags-$(CONFIG_MK6) += $(call check_gcc,-march=k6,-march=i586) +cflags-$(CONFIG_MK7) += $(call check_gcc,-march=athlon,-march=i686 -malign-functions=4) cflags-$(CONFIG_MCRUSOE) += -march=i686 -malign-functions=0 -malign-jumps=0 -malign-loops=0 cflags-$(CONFIG_MWINCHIPC6) += -march=i586 cflags-$(CONFIG_MWINCHIP2) += -march=i586
If you were really motivated you could test for and add the options I added to gcc a couple months ago,
-march={winchip-c6,winchip2,c3}
Revised patch:
Make the test for supported GCC options into a macro, and add new checks for -march={winchip-c6,winchip2,c3}.
--
Brian Gerst
arch/i386/Makefile +11 -9
@@ -22,24 +22,26 @@ CFLAGS += -pipe +check_gcc = $(shell if $(CC) $(1) -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi) + # prevent gcc from keeping the stack 16 byte aligned -CFLAGS += $(shell if $(CC) -mpreferred-stack-boundary=2 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-mpreferred-stack-boundary=2"; fi) +CFLAGS += $(call check_gcc,-mpreferred-stack-boundary=2,) cflags-$(CONFIG_M386) += -march=i386 cflags-$(CONFIG_M486) += -march=i486 cflags-$(CONFIG_M586) += -march=i586 cflags-$(CONFIG_M586TSC) += -march=i586 -cflags-$(CONFIG_M586MMX) += $(shell if $(CC) -march=pentium-mmx -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-march=pentium-mmx"; else echo "-march=i586"; fi) +cflags-$(CONFIG_M586MMX) += $(call check_gcc,-march=pentium-mmx,-march=i586) cflags-$(CONFIG_M686) += -march=i686 -cflags-$(CONFIG_MPENTIUMIII) += $(shell if $(CC) -march=pentium3 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-march=pentium3"; else echo "-march=i686"; fi) -cflags-$(CONFIG_MPENTIUM4) += $(shell if $(CC) -march=pentium4 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-march=pentium4"; else echo "-march=i686"; fi) -cflags-$(CONFIG_MK6) += $(shell if $(CC) -march=k6 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-march=k6"; else echo "-march=i586"; fi) -cflags-$(CONFIG_MK7) += $(shell if $(CC) -march=athlon -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-march=athlon"; else echo "-march=i686 -malign-functions=4"; fi) +cflags-$(CONFIG_MPENTIUMIII) += $(call check_gcc,-march=pentium3,-march=i686) +cflags-$(CONFIG_MPENTIUM4) += $(call check_gcc,-march=pentium4,-march=i686) +cflags-$(CONFIG_MK6) += $(call check_gcc,-march=k6,-march=i586) +cflags-$(CONFIG_MK7) += $(call check_gcc,-march=athlon,-march=i686 -malign-functions=4) cflags-$(CONFIG_MCRUSOE) += -march=i686 -malign-functions=0 -malign-jumps=0 -malign-loops=0 -cflags-$(CONFIG_MWINCHIPC6) += -march=i586 -cflags-$(CONFIG_MWINCHIP2) += -march=i586 +cflags-$(CONFIG_MWINCHIPC6) += $(call check_gcc,-march=winchip-c6,-march=i586) +cflags-$(CONFIG_MWINCHIP2) += $(call check_gcc,-march=winchip2,-march=i586) cflags-$(CONFIG_MWINCHIP3D) += -march=i586 -cflags-$(CONFIG_MCYRIXIII) += -march=i586 +cflags-$(CONFIG_MCYRIXIII) += $(call check_gcc,-march=c3,-march=i586) CFLAGS += $(cflags-y)