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[CMake] Make llvm_ExternalProject always call the build action 

This makes it so that when running 'ninja test-suite' from the top-level LLVM ninja build it *always* re-runs the ninja command in the test-suite directory.

This mechanism is required because the top-level ninja file doesn't have a view into the subdirectory dependency tree, so it can't know what, if anything, needs to be rebuilt.

llvm-svn: 265863
This commit is contained in:
Chris Bieneman 2016-04-08 22:46:04 +00:00
parent 826824ea3d
commit 79c68d52b1
1 changed files with 17 additions and 9 deletions
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26
llvm/cmake/modules/LLVMExternalProjectUtils.cmake
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@ -2,12 +2,12 @@ include(ExternalProject)
# llvm_ExternalProject_BuildCmd(out_var target)
# Utility function for constructing command lines for external project targets
function(llvm_ExternalProject_BuildCmd out_var target)
function(llvm_ExternalProject_BuildCmd out_var target bin_dir)
if (CMAKE_GENERATOR MATCHES "Make")
# Use special command for Makefiles to support parallelism.
set(${out_var} "$(MAKE)" "${target}" PARENT_SCOPE)
set(${out_var} "$(MAKE)" "-C" "${BINARY_DIR}" "${target}" PARENT_SCOPE)
else()
set(${out_var} ${CMAKE_COMMAND} --build . --target ${target}
set(${out_var} ${CMAKE_COMMAND} --build ${bin_dir} --target ${target}
--config $<CONFIGURATION> PARENT_SCOPE)
endif()
endfunction()
@ -63,6 +63,7 @@ function(llvm_ExternalProject_Add name source_dir)
if(CMAKE_VERSION VERSION_GREATER 3.1.0)
set(cmake_3_1_EXCLUDE_FROM_ALL EXCLUDE_FROM_ALL 1)
set(cmake_3_1_BUILD_ALWAYS BUILD_ALWAYS 1)
endif()
if(CMAKE_VERSION VERSION_GREATER 3.3.20150708)
@ -138,14 +139,21 @@ function(llvm_ExternalProject_Add name source_dir)
${PASSTHROUGH_VARIABLES}
INSTALL_COMMAND ""
STEP_TARGETS configure build
${cmake_3_1_BUILD_ALWAYS}
${cmake_3_4_USES_TERMINAL_OPTIONS}
)
if(ARG_USE_TOOLCHAIN)
if(CMAKE_VERSION VERSION_LESS 3.1.0)
set(ALWAYS_REBUILD ${CMAKE_CURRENT_BINARY_DIR}/${name}-always-rebuild)
add_custom_target(${name}-always-rebuild
COMMAND ${CMAKE_COMMAND} -E touch ${STAMP_DIR}/${name}-clobber-stamp)
llvm_ExternalProject_BuildCmd(run_build all ${BINARY_DIR})
ExternalProject_Add_Step(${name} force-rebuild
COMMENT "Forcing rebuild becaues tools have changed"
DEPENDERS configure
DEPENDS ${TOOLCHAIN_BINS}
COMMAND ${run_build}
COMMENT "Forcing rebuild of ${name}"
DEPENDEES configure clean
DEPENDS ${ALWAYS_REBUILD} ${ARG_DEPENDS} ${TOOLCHAIN_BINS}
${cmake_3_4_USES_TERMINAL} )
endif()
@ -153,7 +161,7 @@ function(llvm_ExternalProject_Add name source_dir)
set(force_deps DEPENDS ${TOOLCHAIN_BINS})
endif()
llvm_ExternalProject_BuildCmd(run_clean clean)
llvm_ExternalProject_BuildCmd(run_clean clean ${BINARY_DIR})
ExternalProject_Add_Step(${name} clean
COMMAND ${run_clean}
COMMENT "Cleaning ${name}..."
@ -184,7 +192,7 @@ function(llvm_ExternalProject_Add name source_dir)
# Add top-level targets
foreach(target ${ARG_EXTRA_TARGETS})
llvm_ExternalProject_BuildCmd(build_runtime_cmd ${target})
llvm_ExternalProject_BuildCmd(build_runtime_cmd ${target} ${BINARY_DIR})
add_custom_target(${target}
COMMAND ${build_runtime_cmd}
DEPENDS ${name}-configure