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Support static linking libclang on unix systems

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This commit is contained in:
Jonathan Müller 2018-09-20 20:59:33 +02:00
commit 664a0bb2bb
1 changed files with 15 additions and 3 deletions
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18
external/external.cmake vendored
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@ -123,7 +123,7 @@ function(_cppast_find_libclang config_tool min_version force)
execute_process(COMMAND ${LLVM_CONFIG_BINARY} --version execute_process(COMMAND ${LLVM_CONFIG_BINARY} --version
OUTPUT_VARIABLE llvm_version OUTPUT_STRIP_TRAILING_WHITESPACE) OUTPUT_VARIABLE llvm_version OUTPUT_STRIP_TRAILING_WHITESPACE)
# Ignore git tags in the version string, get the semver number only # ignore git tags in the version string, get the semver number only
string(REGEX REPLACE "([0-9]).([0-9]).([0-9])(.*)" "\\1.\\2.\\3" llvm_version "${llvm_version}") string(REGEX REPLACE "([0-9]).([0-9]).([0-9])(.*)" "\\1.\\2.\\3" llvm_version "${llvm_version}")
if(llvm_version VERSION_LESS min_version) if(llvm_version VERSION_LESS min_version)
@ -160,8 +160,20 @@ function(_cppast_find_libclang config_tool min_version force)
if(NOT LIBCLANG_LIBRARY) if(NOT LIBCLANG_LIBRARY)
message(FATAL_ERROR "libclang library not found") message(FATAL_ERROR "libclang library not found")
else() endif()
message(STATUS "Found libclang library at ${LIBCLANG_LIBRARY}") message(STATUS "Found libclang library at ${LIBCLANG_LIBRARY}")
get_filename_component(ext ${LIBCLANG_LIBRARY} EXT)
if(UNIX AND ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU") AND "${ext}" STREQUAL ".a")
message(STATUS "libclang will be linked statically; linking might take a long time")
# glob all libraries and put them inside a group,
# as the correct order cannot be determined apparently
file(GLOB clang_libraries "${llvm_library_dir}/lib*.a")
string(REPLACE ";" " " clang_libraries "${clang_libraries}")
set(clang_libraries "-Wl,--start-group ${clang_libraries} -Wl,--end-group")
set(LIBCLANG_LIBRARY "${clang_libraries}" CACHE INTERNAL "")
endif() endif()
endif() endif()