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[CMake] Add option LLVM_EXTERNALIZE_DEBUGINFO

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Summary: This adds support for generating dSYM files and stripping debug info from executables and dylibs. It also supports passing -object_path_lto to the linker to generate dSYMs for LTO builds.

Reviewers: bogner, friss

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D15133

llvm-svn: 254627
This commit is contained in:
Chris Bieneman 2015-12-03 18:45:39 +00:00
parent 0fc2f90156
commit fa052602ba
2 changed files with 30 additions and 0 deletions
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3
CMakeLists.txt
View File

@ -301,6 +301,9 @@ endif( LLVM_USE_INTEL_JITEVENTS )
option(LLVM_USE_OPROFILE option(LLVM_USE_OPROFILE
"Use opagent JIT interface to inform OProfile about JIT code" OFF) "Use opagent JIT interface to inform OProfile about JIT code" OFF)
option(LLVM_EXTERNALIZE_DEBUGINFO
"Generate dSYM files and strip executables and libraries (Darwin Only)" OFF)
# If enabled, verify we are on a platform that supports oprofile. # If enabled, verify we are on a platform that supports oprofile.
if( LLVM_USE_OPROFILE ) if( LLVM_USE_OPROFILE )
if( NOT CMAKE_SYSTEM_NAME MATCHES "Linux" ) if( NOT CMAKE_SYSTEM_NAME MATCHES "Linux" )

27
cmake/modules/AddLLVM.cmake
View File

@ -512,6 +512,10 @@ function(llvm_add_library name)
add_dependencies(${objlib} ${LLVM_COMMON_DEPENDS}) add_dependencies(${objlib} ${LLVM_COMMON_DEPENDS})
endforeach() endforeach()
endif() endif()
if(ARG_SHARED OR ARG_MODULE)
llvm_externalize_debuginfo(${name})
endif()
endfunction() endfunction()
macro(add_llvm_library name) macro(add_llvm_library name)
@ -655,6 +659,8 @@ macro(add_llvm_executable name)
if( LLVM_COMMON_DEPENDS ) if( LLVM_COMMON_DEPENDS )
add_dependencies( ${name} ${LLVM_COMMON_DEPENDS} ) add_dependencies( ${name} ${LLVM_COMMON_DEPENDS} )
endif( LLVM_COMMON_DEPENDS ) endif( LLVM_COMMON_DEPENDS )
llvm_externalize_debuginfo(${name})
endmacro(add_llvm_executable name) endmacro(add_llvm_executable name)
function(export_executable_symbols target) function(export_executable_symbols target)
@ -1168,3 +1174,24 @@ function(add_llvm_tool_symlink name dest)
endif() endif()
endif() endif()
endfunction() endfunction()
function(llvm_externalize_debuginfo name)
if(NOT LLVM_EXTERNALIZE_DEBUGINFO)
return()
endif()
if(APPLE)
if(CMAKE_CXX_FLAGS MATCHES "-flto"
OR CMAKE_CXX_FLAGS_${uppercase_CMAKE_BUILD_TYPE} MATCHES "-flto")
set(lto_object ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/${name}-lto.o)
set_target_properties(${name} PROPERTIES
LINK_FLAGS "-Wl,-object_path_lto -Wl,${lto_object}")
endif()
add_custom_command(TARGET ${name} POST_BUILD
COMMAND xcrun dsymutil $<TARGET_FILE:${name}>
COMMAND xcrun strip -Sl $<TARGET_FILE:${name}>)
else()
message(FATAL_ERROR "LLVM_EXTERNALIZE_DEBUGINFO isn't implemented for non-darwin platforms!")
endif()
endfunction()