FEX/toolchain_x86_32.cmake

option(ENABLE_CLANG_THUNKS "Enable building thunks with clang" FALSE)

set(CMAKE_SYSTEM_PROCESSOR i686)

if (ENABLE_CLANG_THUNKS)
  message(STATUS "Enabling thunk clang building. Force enabling LLD as well")

  set(CMAKE_EXE_LINKER_FLAGS_INIT "-fuse-ld=lld")
  set(CMAKE_MODULE_LINKER_FLAGS_INIT "-fuse-ld=lld")
  set(CMAKE_SHARED_LINKER_FLAGS_INIT "-fuse-ld=lld")
  set(CMAKE_C_COMPILER clang)
  set(CMAKE_CXX_COMPILER clang++)
  set(CLANG_FLAGS "-target i686-linux-gnu -msse2 -mfpmath=sse")

  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${CLANG_FLAGS}")
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CLANG_FLAGS}")
else()
  set(CMAKE_C_COMPILER x86_64-linux-gnu-gcc -m32)
  set(CMAKE_CXX_COMPILER x86_64-linux-gnu-g++ -m32)
endif()
Thunks: Add support for building with clang Fairly straightforward, just requires enabling lld in this case since cross-compiling doesn't work well with gnu linker. Also lld doesn't understand the linker script program header symbolic names for read/write/execute. So we need to use the raw number there. Works around an issue where GCC 11 generates broken `init_array` section and also plt sections that glibc doesn't understand. 2022-10-10 05:49:31 +00:00			`option(ENABLE_CLANG_THUNKS "Enable building thunks with clang" FALSE)`

CMake: Add toolchain file for 32-bit cross-compiler 2022-09-19 07:19:22 +00:00			`set(CMAKE_SYSTEM_PROCESSOR i686)`

Thunks: Add support for building with clang Fairly straightforward, just requires enabling lld in this case since cross-compiling doesn't work well with gnu linker. Also lld doesn't understand the linker script program header symbolic names for read/write/execute. So we need to use the raw number there. Works around an issue where GCC 11 generates broken `init_array` section and also plt sections that glibc doesn't understand. 2022-10-10 05:49:31 +00:00			`if (ENABLE_CLANG_THUNKS)`
			`message(STATUS "Enabling thunk clang building. Force enabling LLD as well")`

			`set(CMAKE_EXE_LINKER_FLAGS_INIT "-fuse-ld=lld")`
			`set(CMAKE_MODULE_LINKER_FLAGS_INIT "-fuse-ld=lld")`
			`set(CMAKE_SHARED_LINKER_FLAGS_INIT "-fuse-ld=lld")`
			`set(CMAKE_C_COMPILER clang)`
			`set(CMAKE_CXX_COMPILER clang++)`
			`set(CLANG_FLAGS "-target i686-linux-gnu -msse2 -mfpmath=sse")`

			`set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${CLANG_FLAGS}")`
			`set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CLANG_FLAGS}")`
			`else()`
			`set(CMAKE_C_COMPILER x86_64-linux-gnu-gcc -m32)`
			`set(CMAKE_CXX_COMPILER x86_64-linux-gnu-g++ -m32)`
			`endif()`