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[CMake] Fix rpath construction for out-of-tree builds 

This patch was produced in conjunction with Michał Górny. It should resolve the issues that were trying to be solved by D25304.

This moves rpath handling into `llvm_add_library` and `add_llvm_executable` so that it is available to all projects using AddLLVM whether built in-tree or out-of-tree.

llvm-svn: 285714
This commit is contained in:
Chris Bieneman 2016-11-01 17:44:58 +00:00
parent 700193ae05
commit 61e900b405
2 changed files with 37 additions and 14 deletions
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14
llvm/CMakeLists.txt
View File

@ -677,20 +677,6 @@ set( CMAKE_RUNTIME_OUTPUT_DIRECTORY ${LLVM_BINARY_DIR}/bin )
set( CMAKE_LIBRARY_OUTPUT_DIRECTORY ${LLVM_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX} )
set( CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${LLVM_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX} )
set(CMAKE_BUILD_WITH_INSTALL_RPATH ON)
if (APPLE)
set(CMAKE_INSTALL_NAME_DIR "@rpath")
set(CMAKE_INSTALL_RPATH "@executable_path/../lib")
else(UNIX)
if(NOT DEFINED CMAKE_INSTALL_RPATH)
set(CMAKE_INSTALL_RPATH "\$ORIGIN/../lib${LLVM_LIBDIR_SUFFIX}")
if(${CMAKE_SYSTEM_NAME} MATCHES "(FreeBSD|DragonFly)")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-z,origin")
set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,-z,origin")
endif()
endif(NOT DEFINED CMAKE_INSTALL_RPATH)
endif()
if(APPLE AND DARWIN_LTO_LIBRARY)
set(CMAKE_EXE_LINKER_FLAGS
"${CMAKE_EXE_LINKER_FLAGS} -Wl,-lto_library -Wl,${DARWIN_LTO_LIBRARY}")

37
llvm/cmake/modules/AddLLVM.cmake
View File

@ -415,6 +415,9 @@ function(llvm_add_library name)
elseif(ARG_SHARED)
add_windows_version_resource_file(ALL_FILES ${ALL_FILES})
add_library(${name} SHARED ${ALL_FILES})
llvm_setup_rpath(${name})
else()
add_library(${name} STATIC ${ALL_FILES})
endif()
@ -659,6 +662,8 @@ macro(add_llvm_executable name)
add_executable(${name} ${ALL_FILES})
endif()
llvm_setup_rpath(${name})
if(DEFINED windows_resource_file)
set_windows_version_resource_properties(${name} ${windows_resource_file})
endif()
@ -1317,3 +1322,35 @@ function(llvm_externalize_debuginfo name)
message(FATAL_ERROR "LLVM_EXTERNALIZE_DEBUGINFO isn't implemented for non-darwin platforms!")
endif()
endfunction()
function(llvm_setup_rpath name)
if(LLVM_INSTALL_PREFIX AND NOT (LLVM_INSTALL_PREFIX STREQUAL CMAKE_INSTALL_PREFIX))
set(extra_libdir ${LLVM_LIBRARY_DIR})
elseif(LLVM_BUILD_LIBRARY_DIR)
set(extra_libdir ${LLVM_LIBRARY_DIR})
endif()
if (APPLE)
set(_install_name_dir INSTALL_NAME_DIR "@rpath")
set(_install_rpath "@loader_path/../lib" ${extra_libdir})
elseif(UNIX)
if(NOT DEFINED CMAKE_INSTALL_RPATH)
set(_install_rpath "\$ORIGIN/../lib${LLVM_LIBDIR_SUFFIX}" ${extra_libdir})
if(${CMAKE_SYSTEM_NAME} MATCHES "(FreeBSD|DragonFly)")
set_property(TARGET ${name} APPEND_STRING PROPERTY
LINK_FLAGS " -Wl,-z,origin ")
elseif(${CMAKE_SYSTEM_NAME} STREQUAL "Linux" AND NOT LLVM_LINKER_IS_GOLD)
# $ORIGIN is not interpreted at link time by ld.bfd
set_property(TARGET ${name} APPEND_STRING PROPERTY
LINK_FLAGS " -Wl,-rpath-link,${LLVM_LIBRARY_OUTPUT_INTDIR} ")
endif()
endif()
else()
return()
endif()
set_target_properties(${name} PROPERTIES
BUILD_WITH_INSTALL_RPATH On
INSTALL_RPATH "${_install_rpath}"
${_install_name_dir})
endfunction()