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Re-land "Fix MSVC dependency issue between Clang-tablegen and LLVM-tablegen"

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(was reverted by mistake)

llvm-svn: 349672
This commit is contained in:
Alexandre Ganea 2018-12-19 19:42:21 +00:00
parent d6124cff35
commit f107767821
1 changed files with 6 additions and 0 deletions
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6
cmake/modules/TableGen.cmake
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@ -146,6 +146,12 @@ macro(add_tablegen target project)
llvm_ExternalProject_BuildCmd(tblgen_build_cmd ${target}
${LLVM_NATIVE_BUILD}
CONFIGURATION Release)
# Create an artificial dependency between tablegen projects, because they
# compile the same dependencies, thus using the same build folders.
# FIXME: A proper fix requires sequentially chaining tablegens.
if (NOT ${project} STREQUAL LLVM AND TARGET ${project}-tablegen-host)
add_dependencies(${project}-tablegen-host LLVM-tablegen-host)
endif()
add_custom_command(OUTPUT ${${project}_TABLEGEN_EXE}
COMMAND ${tblgen_build_cmd}
DEPENDS CONFIGURE_LLVM_NATIVE ${target}