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Remove GOOGLE_PROTOBUF_ARCH_PPC

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The macro GOOGLE_PROTOBUF_ARCH_PPC is not used anywhere in the protobuf
source; there is no Power-specific atomics implementation, etc.

Funnily enough, the macro __ppc__ is not actually defined on 32-bit
Power on GCC/Linux, according to the following webpage:

    http://nadeausoftware.com/articles/2012/02/c_c_tip_how_detect_processor_type_using_compiler_predefined_macros#POWER

and verified on a 32-bit Debian sid 'powerpc' chroot:

    (sid_powerpc-dchroot)edmonds@partch:~$ gcc -dM -E - < /dev/null | grep -c __ppc__
    0
    (sid_powerpc-dchroot)edmonds@partch:~$ gcc -dM -E - < /dev/null | grep -c __LP64__
    0
This commit is contained in:
Robert S. Edmonds 2014-09-13 19:31:12 -04:00
parent edc5994525
commit d24b987c14
1 changed files with 0 additions and 3 deletions
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3
src/google/protobuf/stubs/platform_macros.h
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@ -62,9 +62,6 @@
#endif
#elif defined(__pnacl__)
#define GOOGLE_PROTOBUF_ARCH_32_BIT 1
#elif defined(__ppc__)
#define GOOGLE_PROTOBUF_ARCH_PPC 1
#define GOOGLE_PROTOBUF_ARCH_32_BIT 1
#elif defined(__GNUC__) && \
(((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)) || (__GNUC__ > 4))
// We fallback to the generic GCC >= 4.7 implementation in atomicops.h