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[CMake] [Darwin] Don't generate lipo commands if we don't have libraries to put into the fat archive. 

Not making sure there are thin libraries results in some difficult to diagnose build failures. This check should make those build failures go away.

llvm-svn: 252527
This commit is contained in:
Chris Bieneman 2015-11-09 23:07:45 +00:00
parent d6fb6f1b0c
commit 7ccc6136b9
1 changed files with 16 additions and 12 deletions
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28
compiler-rt/cmake/Modules/CompilerRTDarwinUtils.cmake
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@ -186,18 +186,22 @@ function(darwin_lipo_libs name)
"PARENT_TARGET;OUTPUT_DIR;INSTALL_DIR"
"LIPO_FLAGS;DEPENDS"
${ARGN})
add_custom_command(OUTPUT ${LIB_OUTPUT_DIR}/lib${name}.a
COMMAND ${CMAKE_COMMAND} -E make_directory ${LIB_OUTPUT_DIR}
COMMAND lipo -output
${LIB_OUTPUT_DIR}/lib${name}.a
-create ${LIB_LIPO_FLAGS}
DEPENDS ${LIB_DEPENDS}
)
add_custom_target(${name}
DEPENDS ${LIB_OUTPUT_DIR}/lib${name}.a)
add_dependencies(${LIB_PARENT_TARGET} ${name})
install(FILES ${LIB_OUTPUT_DIR}/lib${name}.a
DESTINATION ${LIB_INSTALL_DIR})
if(ARGN_DEPENDS AND ARG_LIPO_FLAGS)
add_custom_command(OUTPUT ${LIB_OUTPUT_DIR}/lib${name}.a
COMMAND ${CMAKE_COMMAND} -E make_directory ${LIB_OUTPUT_DIR}
COMMAND lipo -output
${LIB_OUTPUT_DIR}/lib${name}.a
-create ${LIB_LIPO_FLAGS}
DEPENDS ${LIB_DEPENDS}
)
add_custom_target(${name}
DEPENDS ${LIB_OUTPUT_DIR}/lib${name}.a)
add_dependencies(${LIB_PARENT_TARGET} ${name})
install(FILES ${LIB_OUTPUT_DIR}/lib${name}.a
DESTINATION ${LIB_INSTALL_DIR})
else()
message(WARNING "Not generating lipo target for ${name} because no input libraries exist.")
endif()
endfunction()
# Filter out generic versions of routines that are re-implemented in