diff options
author | Chris Bieneman <beanz@apple.com> | 2014-09-03 23:21:18 +0000 |
---|---|---|
committer | Chris Bieneman <beanz@apple.com> | 2014-09-03 23:21:18 +0000 |
commit | 901166c93936cb532353933251a8b3983297b036 (patch) | |
tree | 4af523ea94fac6de679296a7130cca7599a14b9b /cmake | |
parent | c0f2b8b528d8a37b0a1522aae90af649d6357eb5 (diff) |
Enabling LLVM & Clang to be cross-compiled using CMake from a single configuration command line
The basic idea is similar to the existing cross compilation support. A directory must be configured to build host versions of tablegen tools and llvm-config. This directory can be user provided (and configured), or it can be created during the build. During a build the native build directory will be configured and built to supply the tablegen tools used during the build. A user could also explicitly provide the tablegen executables to run on the CMake command line.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217105 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'cmake')
-rw-r--r-- | cmake/modules/CrossCompile.cmake | 33 | ||||
-rw-r--r-- | cmake/modules/TableGen.cmake | 39 | ||||
-rw-r--r-- | cmake/platforms/iOS.cmake | 47 |
3 files changed, 85 insertions, 34 deletions
diff --git a/cmake/modules/CrossCompile.cmake b/cmake/modules/CrossCompile.cmake new file mode 100644 index 00000000000..400381cda48 --- /dev/null +++ b/cmake/modules/CrossCompile.cmake @@ -0,0 +1,33 @@ +if(NOT DEFINED LLVM_NATIVE_BUILD) + set(LLVM_NATIVE_BUILD "${CMAKE_BINARY_DIR}/native") + message(STATUS "Setting native build dir to ${LLVM_NATIVE_BUILD}") +endif(NOT DEFINED LLVM_NATIVE_BUILD) + +add_custom_command(OUTPUT ${LLVM_NATIVE_BUILD} + COMMAND ${CMAKE_COMMAND} -E make_directory ${LLVM_NATIVE_BUILD} + COMMENT "Creating ${LLVM_NATIVE_BUILD}...") + +add_custom_command(OUTPUT ${LLVM_NATIVE_BUILD}/CMakeCache.txt + COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}" ${CMAKE_SOURCE_DIR} + WORKING_DIRECTORY ${LLVM_NATIVE_BUILD} + DEPENDS ${LLVM_NATIVE_BUILD} + COMMENT "Configuring native LLVM...") + +add_custom_target(ConfigureNativeLLVM DEPENDS ${LLVM_NATIVE_BUILD}/CMakeCache.txt) + +set_directory_properties(PROPERTIES ADDITIONAL_MAKE_CLEAN_FILES ${LLVM_NATIVE_BUILD}) + +if(NOT IS_DIRECTORY ${LLVM_NATIVE_BUILD}) + if(${CMAKE_HOST_SYSTEM_NAME} MATCHES "Darwin") + set(HOST_SYSROOT_FLAGS -DCMAKE_OSX_SYSROOT=macosx) + endif(${CMAKE_HOST_SYSTEM_NAME} MATCHES "Darwin") + + message(STATUS "Configuring native build...") + execute_process(COMMAND ${CMAKE_COMMAND} -E make_directory + ${LLVM_NATIVE_BUILD} ) + + message(STATUS "Configuring native targets...") + execute_process(COMMAND ${CMAKE_COMMAND} -DCMAKE_BUILD_TYPE=Release + -G "${CMAKE_GENERATOR}" -DLLVM_TARGETS_TO_BUILD=${LLVM_TARGETS_TO_BUILD} ${HOST_SYSROOT_FLAGS} ${CMAKE_SOURCE_DIR} + WORKING_DIRECTORY ${LLVM_NATIVE_BUILD} ) +endif(NOT IS_DIRECTORY ${LLVM_NATIVE_BUILD}) diff --git a/cmake/modules/TableGen.cmake b/cmake/modules/TableGen.cmake index 845c986ae2e..67031a5d706 100644 --- a/cmake/modules/TableGen.cmake +++ b/cmake/modules/TableGen.cmake @@ -70,35 +70,6 @@ function(add_public_tablegen_target target) set(LLVM_COMMON_DEPENDS ${LLVM_COMMON_DEPENDS} ${target} PARENT_SCOPE) endfunction() -if(CMAKE_CROSSCOMPILING) - set(CX_NATIVE_TG_DIR "${CMAKE_BINARY_DIR}/native") - - add_custom_command(OUTPUT ${CX_NATIVE_TG_DIR} - COMMAND ${CMAKE_COMMAND} -E make_directory ${CX_NATIVE_TG_DIR} - COMMENT "Creating ${CX_NATIVE_TG_DIR}...") - - # Forward a subset of configure options to discover additional tablegen modules. - get_cmake_property(_variableNames CACHE_VARIABLES) - foreach (_variableName ${_variableNames}) - if (_variableName MATCHES "^(LLVM_EXTERNAL_.*_SOURCE_DIR)$") - list(APPEND CX_CMAKE_ARGUMENTS "-D${_variableName}=\"${${_variableName}}\"") - endif () - endforeach() - - add_custom_command(OUTPUT ${CX_NATIVE_TG_DIR}/CMakeCache.txt - # TODO: Clear the old CMakeCache.txt somehow without breaking restat. - COMMAND ${CMAKE_COMMAND} -UMAKE_TOOLCHAIN_FILE -DCMAKE_BUILD_TYPE=Release - -DLLVM_BUILD_POLLY=OFF ${CX_CMAKE_ARGUMENTS} - -G "${CMAKE_GENERATOR}" ${CMAKE_SOURCE_DIR} - WORKING_DIRECTORY ${CX_NATIVE_TG_DIR} - DEPENDS ${CX_NATIVE_TG_DIR} - COMMENT "Configuring native TableGen...") - - add_custom_target(ConfigureNativeTableGen DEPENDS ${CX_NATIVE_TG_DIR}/CMakeCache.txt) - - set_directory_properties(PROPERTIES ADDITIONAL_MAKE_CLEAN_FILES ${CX_NATIVE_TG_DIR}) -endif() - macro(add_tablegen target project) set(${target}_OLD_LLVM_LINK_COMPONENTS ${LLVM_LINK_COMPONENTS}) set(LLVM_LINK_COMPONENTS ${LLVM_LINK_COMPONENTS} TableGen) @@ -122,16 +93,16 @@ macro(add_tablegen target project) if(CMAKE_CROSSCOMPILING) if( ${${project}_TABLEGEN} STREQUAL "${target}" ) - set(${project}_TABLEGEN_EXE "${CX_NATIVE_TG_DIR}/bin/${target}") + set(${project}_TABLEGEN_EXE "${LLVM_NATIVE_BUILD}/bin/${target}") set(${project}_TABLEGEN_EXE ${${project}_TABLEGEN_EXE} PARENT_SCOPE) add_custom_command(OUTPUT ${${project}_TABLEGEN_EXE} - COMMAND ${CMAKE_BUILD_TOOL} ${target} - DEPENDS ${CX_NATIVE_TG_DIR}/CMakeCache.txt - WORKING_DIRECTORY ${CX_NATIVE_TG_DIR} + COMMAND ${CMAKE_COMMAND} --build . --target ${target} --config $<CONFIGURATION> + DEPENDS ${LLVM_NATIVE_BUILD}/CMakeCache.txt + WORKING_DIRECTORY ${LLVM_NATIVE_BUILD} COMMENT "Building native TableGen...") add_custom_target(${project}NativeTableGen DEPENDS ${${project}_TABLEGEN_EXE}) - add_dependencies(${project}NativeTableGen ConfigureNativeTableGen) + add_dependencies(${project}NativeTableGen ConfigureNativeLLVM) add_dependencies(${target} ${project}NativeTableGen) endif() diff --git a/cmake/platforms/iOS.cmake b/cmake/platforms/iOS.cmake new file mode 100644 index 00000000000..49736432bdf --- /dev/null +++ b/cmake/platforms/iOS.cmake @@ -0,0 +1,47 @@ +# Toolchain config for iOS. +# +# Usage: +# mkdir build; cd build +# cmake ..; make +# mkdir ios; cd ios +# cmake -DLLVM_IOS_TOOLCHAIN_DIR=/path/to/ios/ndk \ +# -DCMAKE_TOOLCHAIN_FILE=../../cmake/platforms/iOS.cmake ../.. +# make <target> + +SET(CMAKE_SYSTEM_NAME Darwin) +SET(CMAKE_SYSTEM_VERSION 13) +SET(CMAKE_CXX_COMPILER_WORKS True) +SET(CMAKE_C_COMPILER_WORKS True) +SET(DARWIN_TARGET_OS_NAME ios) + +IF(NOT DEFINED ENV{SDKROOT}) + MESSAGE(FATAL_ERROR "SDKROOT env var must be set: " $ENV{SDKROOT}) +ENDIF() + +IF(NOT CMAKE_C_COMPILER) + execute_process(COMMAND xcrun -sdk iphoneos -find clang + OUTPUT_VARIABLE CMAKE_C_COMPILER + ERROR_QUIET + OUTPUT_STRIP_TRAILING_WHITESPACE) + message(STATUS "Using c compiler ${CMAKE_C_COMPILER}") +ENDIF() + +IF(NOT CMAKE_CXX_COMPILER) + execute_process(COMMAND xcrun -sdk iphoneos -find clang++ + OUTPUT_VARIABLE CMAKE_CXX_COMPILER + ERROR_QUIET + OUTPUT_STRIP_TRAILING_WHITESPACE) + message(STATUS "Using c compiler ${CMAKE_CXX_COMPILER}") +ENDIF() + +IF (NOT DEFINED IOS_MIN_TARGET) +execute_process(COMMAND xcodebuild -sdk iphoneos -version SDKVersion + OUTPUT_VARIABLE IOS_MIN_TARGET + ERROR_QUIET + OUTPUT_STRIP_TRAILING_WHITESPACE) +ENDIF() + +SET(IOS_COMMON_FLAGS "-isysroot $ENV{SDKROOT} -mios-version-min=${IOS_MIN_TARGET}") +SET(CMAKE_C_FLAGS "${IOS_COMMON_FLAGS}" CACHE STRING "toolchain_cflags" FORCE) +SET(CMAKE_CXX_FLAGS "${IOS_COMMON_FLAGS}" CACHE STRING "toolchain_cxxflags" FORCE) +SET(CMAKE_LINK_FLAGS "${IOS_COMMON_FLAGS}" CACHE STRING "toolchain_linkflags" FORCE) |