On Sat, Jan 30, 2016 at 12:10:49PM +0800, Peng Fan wrote: > Android's tool chain enable the -mandroid at default. > This option will enable the -fpic, which cause uboot compilation > failure: > " > LD u-boot > u-boot contains unexpected relocations: R_ARM_ABS32 > R_ARM_RELATIVE > " > > In my testcase, arm-linux-androideabi-gcc-4.9 internally > enables '-fpic', so when compiling code, there will be > relocation entries using type R_ARM_GOT_BREL and .got > section. When linking all the built-in.o using ld, there > will be R_ARM_ABS32 relocation entry and .got section > in the final u-boot elf image. This can not be handled > by u-boot, since u-boot only expects R_ARM_RELATIVE > relocation entry. > arm-poky-linux-gnueabi-gcc-4.9 default does not enable '-fpic', > so there is not .got section and R_ARM_GOT_BREL in built-in.o. > And in the final u-boot elf image, all relocation entries are > R_ARM_RELATIVE. > > we can pass '-fno-pic' to xxx-gcc to disable pic. whether > the toolchain internally enables or disables pic, '-fno-pic' > can work well. > > Signed-off-by: Peng Fan <peng....@nxp.com> > Cc: Albert Aribaud <albert.u.b...@aribaud.net>
Reviewed-by: Tom Rini <tr...@konsulko.com> -- Tom
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