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Diffstat (limited to 'cmake/glibc-compat-symbols.h')
| -rw-r--r-- | cmake/glibc-compat-symbols.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/cmake/glibc-compat-symbols.h b/cmake/glibc-compat-symbols.h new file mode 100644 index 00000000..5dc1a18b --- /dev/null +++ b/cmake/glibc-compat-symbols.h @@ -0,0 +1,33 @@ +#ifndef __GLIBC_COMPAT_SYMBOLS_H__ +#define __GLIBC_COMPAT_SYMBOLS_H__ 1 + +/** + * + * Note: Patching a specific glibc symbol version is only required if *not* statically linking glibc, + * which should be preferred. + * + * Note: JogAmp's minimum GLIBC is 2.4 due to '__stack_chk_fail' (stack overflow checking) + * + * GLIBC 2.4 - March 2006 - Standard for LSB 4.0, Used in SLES 10 + * + * We could add compile/link option '-fno-stack-protector', however stack protection seems reasonable + * and a pre 2006 distribution a bit too 'far fetched' for our multimedia bindings anyway. + * + * Check build-in macro definitions via 'gcc -dM -E - < /dev/null' + */ +#if defined(__GNUC__) && !defined(__clang__) + #if defined(__arm__) + #define GLIBC_COMPAT_SYMBOL(FFF) __asm__(".symver " #FFF "," #FFF "@GLIBC_2.4"); + #elif defined(__amd64__) + #define GLIBC_COMPAT_SYMBOL(FFF) __asm__(".symver " #FFF "," #FFF "@GLIBC_2.2.5"); + #else + #define GLIBC_COMPAT_SYMBOL(FFF) __asm__(".symver " #FFF "," #FFF "@GLIBC_2.2.5"); + #endif /*__amd64__*/ +#else + #warning GLIBC_COMPAT_SYMBOL not supported with current compiler + #define GLIBC_COMPAT_SYMBOL(FFF) +#endif + +GLIBC_COMPAT_SYMBOL(memcpy) + +#endif /*__GLIBC_COMPAT_SYMBOLS_H__*/ |