OMAP4: enable smc instruction in new assembler versions

New assemblers need -march=armv7-a+sec on command line or .arch_extension sec inline to enable use of the smc instruction. This patch uses as-instr to check the latter to conditionally enable the former in AFLAGS for files that use smc. Checked on both old and new binutils to verify that it does not break old versions. Signed-off-by: John Rigby <[email protected]> Signed-off-by: Tony Lindgren <[email protected]>
kyagi · Dec 18, 2010 · fe297dd · fe297dd
1 parent 1a6b592
commit fe297dd
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
@@ -26,8 +26,9 @@ obj-$(CONFIG_LOCAL_TIMERS)		+= timer-mpu.o
 obj-$(CONFIG_HOTPLUG_CPU)		+= omap-hotplug.o
 obj-$(CONFIG_ARCH_OMAP4)		+= omap44xx-smc.o omap4-common.o
 
-AFLAGS_omap-headsmp.o			:=-Wa,-march=armv7-a
-AFLAGS_omap44xx-smc.o			:=-Wa,-march=armv7-a
+plus_sec := $(call as-instr,.arch_extension sec,+sec)
+AFLAGS_omap-headsmp.o			:=-Wa,-march=armv7-a$(plus_sec)
+AFLAGS_omap44xx-smc.o			:=-Wa,-march=armv7-a$(plus_sec)
 
 # Functions loaded to SRAM
 obj-$(CONFIG_ARCH_OMAP2420)		+= sram242x.o