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xcompile: Explicitly disable warning address-of-packed-member

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With GCC 9.x has a new warning *address-of-packed-member*.

> -Waddress-of-packed-member
>
>     Warn when the address of packed member of struct or union is
>     taken, which usually results in an unaligned pointer value.
>     This is enabled by default.

This results in the build errors below, for example, with GCC 9.2 from
Debian Sid/unstable.

    src/southbridge/intel/common/spi.c: In function 'spi_init':
    src/southbridge/intel/common/spi.c:298:19: error: taking address of packed member of 'struct ich7_spi_regs' may result in an unaligned pointer value [-Werror=address-of-packed-member]
      298 |   cntlr->optype = &ich7_spi->optype;
          |                   ^~~~~~~~~~~~~~~~~

Therefore, explicitly disable the warning.

Change-Id: I01d0dcdd0f8252ab65b91f40bb5f5c5e8177a293
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36940
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Jacob Garber <jgarber1@ualberta.ca>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Elyes HAOUAS 2019-11-19 00:27:13 +01:00 • committed by Patrick Georgi
commit ceb7e68c48
1 changed files with 1 additions and 1 deletions
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util/xcompile/xcompile
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@ -227,7 +227,7 @@ SUBARCH_SUPPORTED+=${TSUPP-${TARCH}}
GCC_CC_${TARCH}:=${GCC}
GCC_CFLAGS_${TARCH}:=${CFLAGS_GCC}
# Generally available for GCC's cc1:
GCC_CFLAGS_${TARCH}+=-Wlogical-op
GCC_CFLAGS_${TARCH}+=-Wlogical-op -Wno-address-of-packed-member
GCC_ADAFLAGS_${TARCH}:=${CFLAGS_GCC}
GCC_COMPILER_RT_${TARCH}:=${CC_RT_GCC}
GCC_COMPILER_RT_FLAGS_${TARCH}:=${CC_RT_EXTRA_GCC}