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feat(build): propagate compiler flags from files to toolchain.cmake

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This change improves build consistency across external projects integrated
through CMake by ensuring that compiler flags defined in configuration files
are passed correctly to the toolchain. It covers the majority of use cases,
as external projects are typically also CMake-based. For projects that use
a custom build system, users will still need to specify the required flags
manually.
This commit is contained in:
Alexey Lapshin
2025-11-19 01:12:40 +07:00
parent 4127eca058
commit a217630b1e
23 changed files with 421 additions and 332 deletions
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tools/cmake/toolchain-esp32s2.cmake
+1 -21
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@@ -1,22 +1,2 @@
include($ENV{IDF_PATH}/tools/cmake/deduplicate_flags.cmake)
set(CMAKE_SYSTEM_NAME Generic)
set(CMAKE_C_COMPILER xtensa-esp32s2-elf-gcc)
set(CMAKE_CXX_COMPILER xtensa-esp32s2-elf-g++)
set(CMAKE_ASM_COMPILER xtensa-esp32s2-elf-gcc)
set(_CMAKE_TOOLCHAIN_PREFIX xtensa-esp32s2-elf-)
set(_CMAKE_TOOLCHAIN_COMMON_FLAGS "-mlongcalls -fno-builtin-memcpy -fno-builtin-memset -fno-builtin-bzero")
remove_duplicated_flags("${_CMAKE_TOOLCHAIN_COMMON_FLAGS} ${CMAKE_C_FLAGS}" UNIQ_CMAKE_C_FLAGS)
set(CMAKE_C_FLAGS "${UNIQ_CMAKE_C_FLAGS}" CACHE STRING "C Compiler Base Flags" FORCE)
remove_duplicated_flags("${_CMAKE_TOOLCHAIN_COMMON_FLAGS} ${CMAKE_CXX_FLAGS}" UNIQ_CMAKE_CXX_FLAGS)
set(CMAKE_CXX_FLAGS "${UNIQ_CMAKE_CXX_FLAGS}" CACHE STRING "C++ Compiler Base Flags" FORCE)
remove_duplicated_flags("${_CMAKE_TOOLCHAIN_COMMON_FLAGS} ${CMAKE_ASM_FLAGS}" UNIQ_CMAKE_ASM_FLAGS)
set(CMAKE_ASM_FLAGS "${UNIQ_CMAKE_ASM_FLAGS}" CACHE STRING "ASM Compiler Base Flags" FORCE)
remove_duplicated_flags("-nostartfiles ${CMAKE_EXE_LINKER_FLAGS}" UNIQ_CMAKE_SAFE_EXE_LINKER_FLAGS)
set(CMAKE_EXE_LINKER_FLAGS "${UNIQ_CMAKE_SAFE_EXE_LINKER_FLAGS}" CACHE STRING "Linker Base Flags" FORCE)
include($ENV{IDF_PATH}/tools/cmake/toolchain.cmake)