fix: add MIPS-specific compiler flag to avoid GOT overflow#1211
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reddevillg
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Jun 11, 2025
| # MIPS 处理器在设计上对 GOT的大小有严格的限制,在链接了大量的共享库时，GOT 可能会膨胀，导致 | ||
| # __cxa_begin_catch（或其他任何需要通过 GOT 访问的符号）超出了 16 位偏移量的可寻址范围。 使用-mxgot选项是解决 | ||
| # R_MIPS_CALL16 溢出最常用的方法。这个选项会告诉 GCC 为全局符号生成使用 32 位偏移量访问 GOT 的代码，从而解除 16 | ||
| # 位偏移量的限制。 |
| "${CMAKE_CXX_FLAGS} -mxgot" | ||
| CACHE STRING "C++ compiler flags" FORCE) | ||
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| set(CMAKE_CXX_FLAGS_RELEASE |
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只需要设置 CMAKE_CXX_FLAGS 就够了
| set(CMAKE_CXX_FLAGS_RELEASE | ||
| "${CMAKE_CXX_FLAGS_RELEASE} -mxgot" | ||
| CACHE STRING "C++ compiler flags for Release build" FORCE) | ||
| set(CMAKE_CXX_FLAGS_DEBUG |
MIPS architecture and globally applies the `-mxgot` flag to compiler settings to address potential GOT overflow issues caused by the architecture's strict limitations on GOT size.
reddevillg
approved these changes
Jun 11, 2025
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MIPS architecture and globally applies the
-mxgotflag to compiler settings to address potential GOT overflow issues caused by the architecture's strict limitations on GOT size.