diff options
| author | Petr Hosek <phosek@chromium.org> | 2018-01-08 23:50:59 +0000 |
|---|---|---|
| committer | Petr Hosek <phosek@chromium.org> | 2018-01-08 23:50:59 +0000 |
| commit | f5a4b472011fc7d2d047e413db82235b297d2576 (patch) | |
| tree | b3c56aac743b37abbfb40eed74ad570b7bd439f4 /cmake/modules | |
| parent | 3e1ae868476d7a40791c24f8476407275470c35c (diff) | |
[CMake] Support for cross-compilation when build runtimes
When cross-compiling, we cannot use the just built toolchain, instead
we need to use the host toolchain which we assume has a support for
targeting the selected target platform. We also need to pass the path
to the native version of llvm-config to external projects.
Differential Revision: https://reviews.llvm.org/D41678
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@322046 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'cmake/modules')
| -rw-r--r-- | cmake/modules/CrossCompile.cmake | 2 | ||||
| -rw-r--r-- | cmake/modules/LLVMExternalProjectUtils.cmake | 14 |
2 files changed, 14 insertions, 2 deletions
diff --git a/cmake/modules/CrossCompile.cmake b/cmake/modules/CrossCompile.cmake index c0c06c83357..b239816c825 100644 --- a/cmake/modules/CrossCompile.cmake +++ b/cmake/modules/CrossCompile.cmake @@ -50,6 +50,8 @@ function(llvm_create_cross_target_internal target_name toolchain buildtype) -DLLVM_TARGET_IS_CROSSCOMPILE_HOST=TRUE -DLLVM_TARGETS_TO_BUILD="${targets_to_build_arg}" -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD="${experimental_targets_to_build_arg}" + -DLLVM_DEFAULT_TARGET_TRIPLE="${TARGET_TRIPLE}" + -DLLVM_TARGET_ARCH="${LLVM_TARGET_ARCH}" ${build_type_flags} ${linker_flag} ${external_clang_dir} WORKING_DIRECTORY ${LLVM_${target_name}_BUILD} DEPENDS CREATE_LLVM_${target_name} diff --git a/cmake/modules/LLVMExternalProjectUtils.cmake b/cmake/modules/LLVMExternalProjectUtils.cmake index b84ebbb5387..65fbaa40444 100644 --- a/cmake/modules/LLVMExternalProjectUtils.cmake +++ b/cmake/modules/LLVMExternalProjectUtils.cmake @@ -102,7 +102,7 @@ function(llvm_ExternalProject_Add name source_dir) endforeach() endforeach() - if(ARG_USE_TOOLCHAIN) + if(ARG_USE_TOOLCHAIN AND NOT CMAKE_CROSSCOMPILING) if(CLANG_IN_TOOLCHAIN) set(compiler_args -DCMAKE_C_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/clang -DCMAKE_CXX_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/clang++) @@ -136,6 +136,16 @@ function(llvm_ExternalProject_Add name source_dir) set(sysroot_arg -DCMAKE_SYSROOT=${CMAKE_SYSROOT}) endif() + if(CMAKE_CROSSCOMPILING) + set(compiler_args -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER} + -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER} + -DCMAKE_AR=${CMAKE_AR} + -DCMAKE_RANLIB=${CMAKE_RANLIB}) + set(llvm_config_path "${LLVM_NATIVE_BUILD}/bin/llvm-config") + else() + set(llvm_config_path "$<TARGET_FILE:llvm-config>") + endif() + ExternalProject_Add(${name} DEPENDS ${ARG_DEPENDS} llvm-config ${name}-clobber @@ -149,7 +159,7 @@ function(llvm_ExternalProject_Add name source_dir) -DCMAKE_INSTALL_PREFIX=${CMAKE_INSTALL_PREFIX} ${sysroot_arg} -DLLVM_BINARY_DIR=${PROJECT_BINARY_DIR} - -DLLVM_CONFIG_PATH=$<TARGET_FILE:llvm-config> + -DLLVM_CONFIG_PATH=${llvm_config_path} -DLLVM_ENABLE_WERROR=${LLVM_ENABLE_WERROR} -DLLVM_HOST_TRIPLE=${LLVM_HOST_TRIPLE} -DLLVM_HAVE_LINK_VERSION_SCRIPT=${LLVM_HAVE_LINK_VERSION_SCRIPT} |