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| author | Rafael Espindola <rafael.espindola@gmail.com> | 2013-10-08 15:07:00 +0000 |
|---|---|---|
| committer | Rafael Espindola <rafael.espindola@gmail.com> | 2013-10-08 15:07:00 +0000 |
| commit | 5a0169f0a1434014e727b22240a45a1f329cc0be (patch) | |
| tree | c2722c909f3774878d1923e7690f3d44f2fa2070 /tools/lto/CMakeLists.txt | |
| parent | 320296a4cfe414ce59f406b8a5ce15272f563103 (diff) | |
| download | llvm-5a0169f0a1434014e727b22240a45a1f329cc0be.tar.gz llvm-5a0169f0a1434014e727b22240a45a1f329cc0be.tar.bz2 llvm-5a0169f0a1434014e727b22240a45a1f329cc0be.tar.xz | |
Only modify lto.exports.def when contents have changed.
Patch by Greg Bedwell.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192182 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'tools/lto/CMakeLists.txt')
| -rw-r--r-- | tools/lto/CMakeLists.txt | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/tools/lto/CMakeLists.txt b/tools/lto/CMakeLists.txt index 89160ee023..957a9f0036 100644 --- a/tools/lto/CMakeLists.txt +++ b/tools/lto/CMakeLists.txt @@ -15,10 +15,16 @@ if( NOT CYGWIN AND LLVM_ENABLE_PIC ) # 'EXPORTS'. The file "lto.exports" already contains the list, so we # massage it into the correct format here to create "lto.exports.def". set(LTO_EXPORTS_DEF ${CMAKE_CURRENT_BINARY_DIR}/lto.exports.def) + set(LTO_EXPORTS_DEF_TEMP ${LTO_EXPORTS_DEF}.txt) file(READ "lto.exports" exports_list) - file(WRITE ${LTO_EXPORTS_DEF} "LIBRARY LTO\n") - file(APPEND ${LTO_EXPORTS_DEF} "EXPORTS\n") - file(APPEND ${LTO_EXPORTS_DEF} ${exports_list}) + file(WRITE ${LTO_EXPORTS_DEF_TEMP} "LIBRARY LTO\n") + file(APPEND ${LTO_EXPORTS_DEF_TEMP} "EXPORTS\n") + file(APPEND ${LTO_EXPORTS_DEF_TEMP} ${exports_list}) + + # Copy the file only if it has changed. + execute_process(COMMAND ${CMAKE_COMMAND} -E copy_if_different + ${LTO_EXPORTS_DEF_TEMP} ${LTO_EXPORTS_DEF}) + set(SHARED_LIB_SOURCES ${SOURCES} ${LTO_EXPORTS_DEF}) else() set(SHARED_LIB_SOURCES ${SOURCES}) |