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Merge branch 'feature/add-constexpr-noinline-for-libstdcxx' into 'master'

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feat(build): add CONFIG_COMPILER_CXX_GLIBCXX_CONSTEXPR choise option

See merge request espressif/esp-idf!42079
This commit is contained in:
Alexey Gerenkov
2025-09-25 09:26:23 +08:00
parent 746acf4632 f53f02f3b5
commit f3dba4f778
4 changed files with 46 additions and 0 deletions
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CMakeLists.txt
+8
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@@ -175,6 +175,14 @@ if(CMAKE_C_COMPILER_ID MATCHES "GNU" AND CMAKE_C_COMPILER_VERSION VERSION_GREATE
list(APPEND c_compile_options "-fzero-init-padding-bits=all" "-fno-malloc-dce")
endif()
if(CONFIG_COMPILER_CXX_GLIBCXX_CONSTEXPR_COLD_CONSTEXPR)
list(APPEND cxx_compile_options "-D_GLIBCXX20_CONSTEXPR=__attribute__((cold)) constexpr")
list(APPEND cxx_compile_options "-D_GLIBCXX23_CONSTEXPR=__attribute__((cold)) constexpr")
elseif(CONFIG_COMPILER_CXX_GLIBCXX_CONSTEXPR_COLD)
list(APPEND cxx_compile_options "-D_GLIBCXX20_CONSTEXPR=__attribute__((cold))")
list(APPEND cxx_compile_options "-D_GLIBCXX23_CONSTEXPR=__attribute__((cold))")
endif()
__generate_prefix_map(prefix_map_compile_options)
list(APPEND compile_options ${prefix_map_compile_options})