espressif/esp-idf
1
0
Fork 0
mirror of https://github.com/espressif/esp-idf.git synced 2026-04-27 19:13:21 +00:00
Code Issues Packages Projects Releases Wiki Activity

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

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files
Kconfig
+28
View File
@@ -682,6 +682,34 @@ mainmenu "Espressif IoT Development Framework Configuration"
help
Enable compiler static analyzer. This may produce false-positive results and increases compile time.
choice COMPILER_CXX_GLIBCXX_CONSTEXPR
prompt "Define _GLIBCXX_CONSTEXPR"
default COMPILER_CXX_GLIBCXX_CONSTEXPR_NO_CHANGE
depends on IDF_TOOLCHAIN_GCC && !IDF_TARGET_LINUX
help
Modify libstdc++ _GLIBCXX20_CONSTEXPR and _GLIBCXX23_CONSTEXPR definitions to provide size
optimizations. The total size optimization depends on the application's structure.
There is no robust way to determine which option would be better in a particular case.
Please try all available options to find the best size optimization.
config COMPILER_CXX_GLIBCXX_CONSTEXPR_NO_CHANGE
bool "No change"
help
Use default _GLIBCXX20_CONSTEXPR and _GLIBCXX23_CONSTEXPR defined in libstdc++
config COMPILER_CXX_GLIBCXX_CONSTEXPR_COLD_CONSTEXPR
bool "_GLIBCXX2X_CONSTEXPR=__attribute__((cold)) constexpr"
help
Define _GLIBCXX20_CONSTEXPR=__attribute__((cold)) constexpr
Define _GLIBCXX23_CONSTEXPR=__attribute__((cold)) constexpr
config COMPILER_CXX_GLIBCXX_CONSTEXPR_COLD
bool "_GLIBCXX2X_CONSTEXPR=__attribute__((cold))"
help
Define _GLIBCXX20_CONSTEXPR=__attribute__((cold)).
Define _GLIBCXX23_CONSTEXPR=__attribute__((cold)).
endchoice
endmenu # Compiler Options
menu "Component config"