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| author | René Bertin <rjvbertin@gmail.com> | 2024-04-24 19:35:23 (GMT) |
|---|---|---|
| committer | Brad King <brad.king@kitware.com> | 2024-04-24 20:57:36 (GMT) |
| commit | f65a6d2cb18c0614e3adb27e007687cde570e8ec (patch) | |
| tree | e895b56dff415ab093682a8b7724cd8ccabf1888 | |
| parent | 7dac16498e070eac26073e9940b067d33a5f9256 (diff) | |
| download | CMake-f65a6d2cb18c0614e3adb27e007687cde570e8ec.zip CMake-f65a6d2cb18c0614e3adb27e007687cde570e8ec.tar.gz CMake-f65a6d2cb18c0614e3adb27e007687cde570e8ec.tar.bz2 | |
GNU: Do not use "fat-lto-objects" flags for IPO on Apple platforms
Fat LTO objects contain both traditional object code and the LTO bitcode
IR, but the GNU compiler does not support them on Apple platforms.
A compile error is raised when `-f[no-]fat-lto-objects` flags are used,
so avoid them.
This also implies that static Fortran libraries cannot be built with IPO.
Fixes: #25931
| -rw-r--r-- | Modules/Compiler/GNU.cmake | 2 | ||||
| -rw-r--r-- | Modules/FortranCInterface/CMakeLists.txt | 8 |
2 files changed, 7 insertions, 3 deletions
diff --git a/Modules/Compiler/GNU.cmake b/Modules/Compiler/GNU.cmake index 1113e9a..857399c 100644 --- a/Modules/Compiler/GNU.cmake +++ b/Modules/Compiler/GNU.cmake @@ -151,7 +151,7 @@ macro(__compiler_gnu lang) list(APPEND __lto_flags -flto) endif() - if(NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 4.7) + if(NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 4.7 AND NOT APPLE) # '-ffat-lto-objects' introduced since GCC 4.7: # * https://gcc.gnu.org/onlinedocs/gcc-4.6.4/gcc/Option-Summary.html (no) # * https://gcc.gnu.org/onlinedocs/gcc-4.7.4/gcc/Option-Summary.html (yes) diff --git a/Modules/FortranCInterface/CMakeLists.txt b/Modules/FortranCInterface/CMakeLists.txt index a0f1862..2e8e14f 100644 --- a/Modules/FortranCInterface/CMakeLists.txt +++ b/Modules/FortranCInterface/CMakeLists.txt @@ -113,11 +113,15 @@ target_link_libraries(FortranCInterface PUBLIC symbols) if(CMAKE_Fortran_COMPILER_ID STREQUAL "GNU" AND CMAKE_Fortran_COMPILER_VERSION VERSION_GREATER_EQUAL 12) target_compile_options(FortranCInterface PRIVATE "-fno-lto") - target_compile_options(myfort PRIVATE "-flto=auto" "-ffat-lto-objects") + if(NOT APPLE) + target_compile_options(myfort PRIVATE "-flto=auto" "-ffat-lto-objects") + endif() endif() if(CMAKE_C_COMPILER_ID STREQUAL "GNU" AND CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 12) - target_compile_options(symbols PRIVATE "-flto=auto" "-ffat-lto-objects") + if(NOT APPLE) + target_compile_options(symbols PRIVATE "-flto=auto" "-ffat-lto-objects") + endif() endif() file(GENERATE OUTPUT exe-$<CONFIG>.cmake CONTENT [[ |