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TableGen.cmake: Use DEPFILE for Ninja Generator with CMake>=3.7.

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CMake emits build targets as relative paths (from build.ninja) but Ninja doesn't identify absolute path (in *.d) as relative path (in build.ninja).
So, let file names, in the command line, relative from ${CMAKE_BINARY_DIR}, where build.ninja is.

Note that tblgen is executed on ${CMAKE_BINARY_DIR} as working directory.

Differential Revision: https://reviews.llvm.org/D33707

llvm-svn: 305961
This commit is contained in:
NAKAMURA Takumi 2017-06-21 22:04:07 +00:00
parent 94af335d3b
commit 0b3ef4ffaa
1 changed files with 26 additions and 3 deletions
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29
cmake/modules/TableGen.cmake
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@ -14,8 +14,31 @@ function(tablegen project ofn)
message(FATAL_ERROR "${project}_TABLEGEN_EXE not set")
endif()
file(GLOB local_tds "*.td")
file(GLOB_RECURSE global_tds "${LLVM_MAIN_INCLUDE_DIR}/llvm/*.td")
# Use depfile instead of globbing arbitrary *.td(s)
# DEPFILE is available for Ninja Generator with CMake>=3.7.
if(CMAKE_GENERATOR STREQUAL "Ninja" AND NOT CMAKE_VERSION VERSION_LESS 3.7)
# Make output path relative to build.ninja, assuming located on
# ${CMAKE_BINARY_DIR}.
# CMake emits build targets as relative paths but Ninja doesn't identify
# absolute path (in *.d) as relative path (in build.ninja)
# Note that tblgen is executed on ${CMAKE_BINARY_DIR} as working directory.
file(RELATIVE_PATH ofn_rel
${CMAKE_BINARY_DIR} ${CMAKE_CURRENT_BINARY_DIR}/${ofn})
set(additional_cmdline
-o ${ofn_rel}.tmp
-d ${ofn_rel}.d
WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
DEPFILE ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.d
)
set(local_tds)
set(global_tds)
else()
file(GLOB local_tds "*.td")
file(GLOB_RECURSE global_tds "${LLVM_MAIN_INCLUDE_DIR}/llvm/*.td")
set(additional_cmdline
-o ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp
)
endif()
if (IS_ABSOLUTE ${LLVM_TARGET_DEFINITIONS})
set(LLVM_TARGET_DEFINITIONS_ABSOLUTE ${LLVM_TARGET_DEFINITIONS})
@ -44,7 +67,7 @@ function(tablegen project ofn)
COMMAND ${${project}_TABLEGEN_EXE} ${ARGN} -I ${CMAKE_CURRENT_SOURCE_DIR}
${LLVM_TABLEGEN_FLAGS}
${LLVM_TARGET_DEFINITIONS_ABSOLUTE}
-o ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp
${additional_cmdline}
# The file in LLVM_TARGET_DEFINITIONS may be not in the current
# directory and local_tds may not contain it, so we must
# explicitly list it here: