On Thu, Feb 23, 2012 at 10:58:36PM +0530, Aneesh V wrote: > On Thursday 23 February 2012 08:27 PM, Mike Frysinger wrote: > >On Thursday 23 February 2012 08:39:43 Aneesh V wrote: > >>--- a/arch/arm/config.mk > >>+++ b/arch/arm/config.mk > >> > >>-# Explicitly specifiy 32-bit ARM ISA since toolchain default can be > >>-mthumb: +# Choose between ARM/Thumb instruction sets > >>+ifeq ($(CONFIG_SYS_THUMB_BUILD),y) > >>+PF_CPPFLAGS_ARM := $(call cc-option, -mthumb -mthumb-interwork,\ > >>+ $(call cc-option,-marm,)\ > >>+ $(call cc-option,-mno-thumb-interwork,)\ > >>+ ) > >>+else > >> PF_CPPFLAGS_ARM := $(call cc-option,-marm,) > >>+PF_CPPFLAGS_ARM += $(call cc-option,-mno-thumb-interwork,) > > > >this 2nd part is no good. "+=" is not the same thing as ":=". > > I don't understand the difference. '+=' is done after ':=' right?
'+=' is evaluated every file we build, ':=' is evaluated once. We use the latter to keep build times down. -- Tom _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
