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u-boot: fix extern inline build errors for gcc 5 

The gcc 5 change its default standard from gnu89 to gnu11. These two
standards do have different semantics for inline functions. And the
gcc 5 will emit the following errors on the "extern inline" functions:
    arch/powerpc/cpu/mpc8xxx/fsl_lbc.o: In function `ld_le16':
    ./arch/powerpc/include/asm/byteorder.h:12: multiple definition of `ld_le16'
    arch/powerpc/cpu/mpc8xxx/fdt.o:./arch/powerpc/include/asm/byteorder.h:12: first defined here

Fix these build errors by using "-fgnu89-inline" to enforce the gnu89
inline semantics as suggested in [1].

[1] https://gcc.gnu.org/gcc-5/porting_to.html

(From OE-Core rev: a1c83bb5556837d31d934b9af130cdbac19d5e97)

Signed-off-by: Kevin Hao <kexin.hao@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Kevin Hao 2015-07-31 13:21:25 +08:00 committed by Richard Purdie
parent 3243682819
commit 3167580e79
1 changed files with 2 additions and 0 deletions
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meta/recipes-bsp/u-boot/u-boot_2015.07.bb
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@ -10,3 +10,5 @@ SRCREV = "33711bdd4a4dce942fb5ae85a68899a8357bdd94"
SRC_URI += "file://0001-u-boot-mpc85xx-u-boot-.lds-remove-_GLOBAL_OFFSET_TAB.patch"
PV = "v2015.07+git${SRCPV}"
EXTRA_OEMAKE_append = " KCFLAGS=-fgnu89-inline"