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build: fix standalone builds for compiler-rt on Darwin 

When building static fat libraries, we need to ensure that we use libtool rather
than llvm-ar to create the library.  Duplicate the rules from LLVM to ensure
that we correctly build the fat libraries when building compiler-rt standalone.
This also requires that we duplicate the workaround for the `DYLD_LIBRARY_PATH`
for SIP.  Additionally, ensure that we set the `CMAKE_*_ARCHIVE_FINISH` variable
to ensure that we do not try to use `ranlib` on that target.

llvm-svn: 342425
This commit is contained in:
Saleem Abdulrasool 2018-09-17 23:25:36 +00:00
parent 2ee93d28fd
commit f5ebd70a67
1 changed files with 60 additions and 0 deletions
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60
compiler-rt/CMakeLists.txt
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@ -82,6 +82,66 @@ if (COMPILER_RT_STANDALONE_BUILD)
or specify the PYTHON_EXECUTABLE CMake variable.")
endif()
# Ensure that fat libraries are built correctly on Darwin
if(CMAKE_SYSTEM_NAME STREQUAL Darwin)
if(NOT CMAKE_LIBTOOL)
find_program(CMAKE_XCRUN
NAMES
xcrun)
if(CMAKE_XCRUN)
execute_process(COMMAND
${CMAKE_XCRUN} -find libtool
OUTPUT_VARIABLE
CMAKE_LIBTOOL
OUTPUT_STRIP_TRAILING_WHITESPACE)
endif()
if(NOT CMAKE_LIBTOOL OR NOT EXISTS CMAKE_LIBTOOL)
find_program(CMAKE_LIBTOOL
NAMES
libtool)
endif()
endif()
get_property(languages GLOBAL PROPERTY ENABLED_LANGUAGES)
if(CMAKE_LIBTOOL)
set(CMAKE_LIBTOOL ${CMAKE_LIBTOOL} CACHE PATH "libtool executable")
message(STATUS "Found libtool - ${CMAKE_LIBTOOL}")
execute_process(COMMAND
${CMAKE_LIBTOOL} -V
OUTPUT_VARIABLE
LIBTOOL_V_OUTPUT
OUTPUT_STRIP_TRAILING_WHITESPACE)
if("${LIBTOOL_V_OUTPUT}" MATCHES ".*cctools-([0-9]+).*")
string(REGEX REPLACE ".*cctools-([0-9]+).*" "\\1" LIBTOOL_VERSION ${LIBTOOL_V_OUTPUT})
if(NOT LIBTOOL_VERSION VERSION_LESS "862")
set(LIBTOOL_NO_WARNING_FLAG "-no_warning_for_no_symbols")
endif()
endif()
foreach(lang ${languages})
set(CMAKE_${lang}_CREATE_STATIC_LIBRARY "\"${CMAKE_LIBTOOL}\" -static ${LIBTOOL_NO_WARNING_FLAG} -o <TARGET> <LINK_FLAGS> <OBJECTS>")
# Replace the finish target so that ranlib is not invoked on the
# archive.
set(CMAKE_${lang}_ARCHIVE_FINISH "")
endforeach()
endif()
# Workaround SIP :-(
if(DYLD_LIBRARY_PATH)
set(dyld_envar "DYLD_LIBRARY_PATH=${DYLD_LIBRARY_PATH}")
foreach(lang ${languages})
foreach(cmd ${CMAKE_${lang}_CREATE_STATIC_LIBRARY})
list(APPEND CMAKE_${lang}_CREATE_STATIC_LIBRARY_NEW "${dyld_envar} ${cmd}")
endforeach()
set(CMAKE_${lang}_CREATE_STATIC_LIBRARY ${CMAKE_${lang}_CREATE_STATIC_LIBRARY_NEW})
set(CMAKE_${lang}_ARCHIVE_FINISH " ")
endforeach()
endif()
endif()
# Define default arguments to lit.
set(LIT_ARGS_DEFAULT "-sv")
if (MSVC OR XCODE)