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[CMake] Module builds depend on target intrinsics_gen to be built first.

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When compiling with modules, header A and B can be in the same module M.
B depends on intrinsics_gen and A doesn't. Compiling a source file #include-ing
header A, we implicitly request module M to be built. It puts header A and B in
the same TU and tries to build them. Since B depends on intrinsics_gen (which
might not be built yet) we run into build failures.

This should fix our modules buildbot.

Patch reviewed by Chris Bieneman.

llvm-svn: 274270
This commit is contained in:
Vassil Vassilev 2016-06-30 20:35:56 +00:00
parent 6a66d5b518
commit 7007fed7cc
1 changed files with 9 additions and 0 deletions
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9
CMakeLists.txt
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@ -700,6 +700,15 @@ add_subdirectory(lib/TableGen)
add_subdirectory(utils/TableGen)
# Force target to be built as soon as possible. Clang modules builds depend
# header-wise on it as they ship all headers from the umbrella folders. Building
# an entire module might include header, which depends on intrinsics_gen. This
# should be right after LLVMSupport and LLVMTableGen otherwise we introduce a
# circular dependence.
if (LLVM_ENABLE_MODULES)
list(APPEND LLVM_COMMON_DEPENDS intrinsics_gen)
endif(LLVM_ENABLE_MODULES)
add_subdirectory(include/llvm)
add_subdirectory(lib)