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Merge branch 'contrib/github_pr_12449' into 'master'

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Use correct clang flag for size optimization (GitHub PR)

Closes IDFGH-11295

See merge request espressif/esp-idf!33083
This commit is contained in:
Marius Vikhammer 2024-08-29 08:40:40 +08:00
commit 8fcc57b12f
3 changed files with 15 additions and 7 deletions
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12
CMakeLists.txt
View File

@ -16,7 +16,11 @@ endif()
if(NOT BOOTLOADER_BUILD)
if(CONFIG_COMPILER_OPTIMIZATION_SIZE)
list(APPEND compile_options "-Os")
if(CMAKE_C_COMPILER_ID MATCHES "Clang")
list(APPEND compile_options "-Oz")
else()
list(APPEND compile_options "-Os")
endif()
if(CMAKE_C_COMPILER_ID MATCHES "GNU")
list(APPEND compile_options "-freorder-blocks")
endif()
@ -34,7 +38,11 @@ if(NOT BOOTLOADER_BUILD)
else() # BOOTLOADER_BUILD
if(CONFIG_BOOTLOADER_COMPILER_OPTIMIZATION_SIZE)
list(APPEND compile_options "-Os")
if(CMAKE_C_COMPILER_ID MATCHES "Clang")
list(APPEND compile_options "-Oz")
else()
list(APPEND compile_options "-Os")
endif()
if(CMAKE_C_COMPILER_ID MATCHES "GNU")
list(APPEND compile_options "-freorder-blocks")
endif()

6
Kconfig
View File

@ -323,8 +323,8 @@ mainmenu "Espressif IoT Development Framework Configuration"
help
This option sets compiler optimization level (gcc -O argument) for the app.
- The "Debug" setting will add the -0g flag to CFLAGS.
- The "Size" setting will add the -0s flag to CFLAGS.
- The "Debug" setting will add the -Og flag to CFLAGS.
- The "Size" setting will add the -Os flag to CFLAGS (-Oz with Clang).
- The "Performance" setting will add the -O2 flag to CFLAGS.
- The "None" setting will add the -O0 flag to CFLAGS.
@ -345,7 +345,7 @@ mainmenu "Espressif IoT Development Framework Configuration"
config COMPILER_OPTIMIZATION_DEBUG
bool "Debug (-Og)"
config COMPILER_OPTIMIZATION_SIZE
bool "Optimize for size (-Os)"
bool "Optimize for size (-Os with GCC, -Oz with Clang)"
config COMPILER_OPTIMIZATION_PERF
bool "Optimize for performance (-O2)"
config COMPILER_OPTIMIZATION_NONE

4
components/bootloader/Kconfig.projbuild
View File

@ -20,14 +20,14 @@ menu "Bootloader config"
This option sets compiler optimization level (gcc -O argument)
for the bootloader.
- The default "Size" setting will add the -0s flag to CFLAGS.
- The default "Size" setting will add the -Os (-Oz with clang) flag to CFLAGS.
- The "Debug" setting will add the -Og flag to CFLAGS.
- The "Performance" setting will add the -O2 flag to CFLAGS.
Note that custom optimization levels may be unsupported.
config BOOTLOADER_COMPILER_OPTIMIZATION_SIZE
bool "Size (-Os)"
bool "Size (-Os with GCC, -Oz with Clang)"
config BOOTLOADER_COMPILER_OPTIMIZATION_DEBUG
bool "Debug (-Og)"
config BOOTLOADER_COMPILER_OPTIMIZATION_PERF