Explicit '-mthumb' is required because Cortex-M3 does not support ARM instructions and actual flags cause gcc to fail with 'error: target CPU does not support ARM mode'.
The '-mcpu=cortex-m3' is shorter than '-march=armv7-m -mtune=cortex-m3' and enables workarounds like '-mfix-cortex-m3-ldrd'. Signed-off-by: Enrico Scholz <[email protected]> --- conf/machine/include/tune-cortexm3.inc | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/conf/machine/include/tune-cortexm3.inc b/conf/machine/include/tune-cortexm3.inc index 6da9aee..a66a33c 100644 --- a/conf/machine/include/tune-cortexm3.inc +++ b/conf/machine/include/tune-cortexm3.inc @@ -1,4 +1,4 @@ # valid options for -march: `armv7', `armv7-m' -TARGET_CC_ARCH = "-march=armv7-m -mtune=cortex-m3 -mfpu=vfp -mfloat-abi=softfp" +TARGET_CC_ARCH = "-mthumb -mcpu=cortex-m3 -mfpu=vfp -mfloat-abi=softfp" FEED_ARCH = "armv7" BASE_PACKAGE_ARCH = "armv7" -- 1.7.4 _______________________________________________ Openembedded-devel mailing list [email protected] http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-devel
