[cmake] Declare LLVM_CMAKE_PATH for use in subprojects

Declare the LLVM_CMAKE_PATH to the source directory location of CMake
files, in order to make it possible to easily use them in subprojects.
Such a variable is already declared in most of LLVM projects
(and inconsistently mixed with direct source tree references), including
Clang, LLDB, compiler-rt, libcxx... Declaring it inside main LLVM tree
makes it possible to avoid having to declare fallback values or use
conditionals in those projects.

It should be noted that in some of the subprojects LLVM_CMAKE_PATH is
used to reference generated LLVMConfig.cmake file. However, these
references are conditional to stand-alone builds and explicitly
including this file is unnecessary in combined builds.

Differential Revision: https://reviews.llvm.org/D25724

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@284581 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michal Gorny 2016-10-19 12:18:34 +00:00
parent ab4e0362c7
commit 7b63453e9a
2 changed files with 3 additions and 1 deletions

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@ -263,6 +263,8 @@ set(LLVM_MAIN_SRC_DIR ${CMAKE_CURRENT_SOURCE_DIR} ) # --src-root
set(LLVM_MAIN_INCLUDE_DIR ${LLVM_MAIN_SRC_DIR}/include ) # --includedir
set(LLVM_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR} ) # --prefix
# Note: LLVM_CMAKE_PATH does not include generated files
set(LLVM_CMAKE_PATH ${LLVM_MAIN_SRC_DIR}/cmake/modules)
set(LLVM_EXAMPLES_BINARY_DIR ${LLVM_BINARY_DIR}/examples)
set(LLVM_INCLUDE_DIR ${CMAKE_CURRENT_BINARY_DIR}/include)

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@ -21,7 +21,7 @@ find_first_existing_vc_file(llvm_vc "${LLVM_MAIN_SRC_DIR}")
# The VC revision include that we want to generate.
set(version_inc "${CMAKE_CURRENT_BINARY_DIR}/LLVMLTORevision.h")
set(get_svn_script "${LLVM_MAIN_SRC_DIR}/cmake/modules/GenerateVersionFromCVS.cmake")
set(get_svn_script "${LLVM_CMAKE_PATH}/GenerateVersionFromCVS.cmake")
if(DEFINED llvm_vc)
# Create custom target to generate the VC revision include.