vcpkg/scripts/toolchains/linux.cmake
fwcd 3f55ea9fce
[linux] Fix compiler in native ARM host builds (#38113)
#35084 introduced a regression for native ARM Linux builds where the
toolchain would mistakenly try to reference a cross-compiler (e.g.
`aarch64-linux-gnu-gcc`) despite building natively because vcpkg spells
the architecture differently from what the system reports (`arm64` vs.
`aarch64`).

This fixes the issue by checking whether the
`CMAKE_HOST_SYSTEM_PROCESSOR` matches the target (in CMake's spelling of
the architecture).

---------

Co-authored-by: Kai Pastor <dg0yt@darc.de>
2024-04-19 15:11:15 -04:00

77 lines
3.8 KiB
CMake

if(NOT _VCPKG_LINUX_TOOLCHAIN)
set(_VCPKG_LINUX_TOOLCHAIN 1)
if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Linux")
set(CMAKE_CROSSCOMPILING OFF CACHE BOOL "")
endif()
set(CMAKE_SYSTEM_NAME Linux CACHE STRING "")
if(VCPKG_TARGET_ARCHITECTURE STREQUAL "x64")
set(CMAKE_SYSTEM_PROCESSOR x86_64 CACHE STRING "")
elseif(VCPKG_TARGET_ARCHITECTURE STREQUAL "x86")
set(CMAKE_SYSTEM_PROCESSOR x86 CACHE STRING "")
string(APPEND VCPKG_C_FLAGS " -m32")
string(APPEND VCPKG_CXX_FLAGS " -m32")
string(APPEND VCPKG_LINKER_FLAGS " -m32")
elseif(VCPKG_TARGET_ARCHITECTURE STREQUAL "arm")
set(CMAKE_SYSTEM_PROCESSOR armv7l CACHE STRING "")
if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Linux" AND NOT CMAKE_HOST_SYSTEM_PROCESSOR STREQUAL "armv7l")
if(NOT DEFINED CMAKE_CXX_COMPILER)
set(CMAKE_CXX_COMPILER "arm-linux-gnueabihf-g++")
endif()
if(NOT DEFINED CMAKE_C_COMPILER)
set(CMAKE_C_COMPILER "arm-linux-gnueabihf-gcc")
endif()
if(NOT DEFINED CMAKE_ASM_COMPILER)
set(CMAKE_ASM_COMPILER "arm-linux-gnueabihf-gcc")
endif()
if(NOT DEFINED CMAKE_ASM-ATT_COMPILER)
set(CMAKE_ASM-ATT_COMPILER "arm-linux-gnueabihf-as")
endif()
message(STATUS "Cross compiling arm on host ${CMAKE_HOST_SYSTEM_PROCESSOR}, use cross compiler: ${CMAKE_CXX_COMPILER}/${CMAKE_C_COMPILER}")
endif()
elseif(VCPKG_TARGET_ARCHITECTURE STREQUAL "arm64")
set(CMAKE_SYSTEM_PROCESSOR aarch64 CACHE STRING "")
if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Linux" AND NOT CMAKE_HOST_SYSTEM_PROCESSOR STREQUAL "aarch64")
if(NOT DEFINED CMAKE_CXX_COMPILER)
set(CMAKE_CXX_COMPILER "aarch64-linux-gnu-g++")
endif()
if(NOT DEFINED CMAKE_C_COMPILER)
set(CMAKE_C_COMPILER "aarch64-linux-gnu-gcc")
endif()
if(NOT DEFINED CMAKE_ASM_COMPILER)
set(CMAKE_ASM_COMPILER "aarch64-linux-gnu-gcc")
endif()
if(NOT DEFINED CMAKE_ASM-ATT_COMPILER)
set(CMAKE_ASM-ATT_COMPILER "aarch64-linux-gnu-as")
endif()
message(STATUS "Cross compiling arm64 on host ${CMAKE_HOST_SYSTEM_PROCESSOR}, use cross compiler: ${CMAKE_CXX_COMPILER}/${CMAKE_C_COMPILER}")
endif()
endif()
get_property( _CMAKE_IN_TRY_COMPILE GLOBAL PROPERTY IN_TRY_COMPILE )
if(NOT _CMAKE_IN_TRY_COMPILE)
string(APPEND CMAKE_C_FLAGS_INIT " -fPIC ${VCPKG_C_FLAGS} ")
string(APPEND CMAKE_CXX_FLAGS_INIT " -fPIC ${VCPKG_CXX_FLAGS} ")
string(APPEND CMAKE_C_FLAGS_DEBUG_INIT " ${VCPKG_C_FLAGS_DEBUG} ")
string(APPEND CMAKE_CXX_FLAGS_DEBUG_INIT " ${VCPKG_CXX_FLAGS_DEBUG} ")
string(APPEND CMAKE_C_FLAGS_RELEASE_INIT " ${VCPKG_C_FLAGS_RELEASE} ")
string(APPEND CMAKE_CXX_FLAGS_RELEASE_INIT " ${VCPKG_CXX_FLAGS_RELEASE} ")
string(APPEND CMAKE_MODULE_LINKER_FLAGS_INIT " ${VCPKG_LINKER_FLAGS} ")
string(APPEND CMAKE_SHARED_LINKER_FLAGS_INIT " ${VCPKG_LINKER_FLAGS} ")
string(APPEND CMAKE_EXE_LINKER_FLAGS_INIT " ${VCPKG_LINKER_FLAGS} ")
if(VCPKG_CRT_LINKAGE STREQUAL "static")
string(APPEND CMAKE_MODULE_LINKER_FLAGS_INIT "-static ")
string(APPEND CMAKE_SHARED_LINKER_FLAGS_INIT "-static ")
string(APPEND CMAKE_EXE_LINKER_FLAGS_INIT "-static ")
endif()
string(APPEND CMAKE_MODULE_LINKER_FLAGS_DEBUG_INIT " ${VCPKG_LINKER_FLAGS_DEBUG} ")
string(APPEND CMAKE_SHARED_LINKER_FLAGS_DEBUG_INIT " ${VCPKG_LINKER_FLAGS_DEBUG} ")
string(APPEND CMAKE_EXE_LINKER_FLAGS_DEBUG_INIT " ${VCPKG_LINKER_FLAGS_DEBUG} ")
string(APPEND CMAKE_MODULE_LINKER_FLAGS_RELEASE_INIT " ${VCPKG_LINKER_FLAGS_RELEASE} ")
string(APPEND CMAKE_SHARED_LINKER_FLAGS_RELEASE_INIT " ${VCPKG_LINKER_FLAGS_RELEASE} ")
string(APPEND CMAKE_EXE_LINKER_FLAGS_RELEASE_INIT " ${VCPKG_LINKER_FLAGS_RELEASE} ")
endif()
endif()