Fix: macOS ADIOS1 w/ cctools ld64 w/o XCode #1196
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ax3l
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Feb 7, 2022
CMakeLists.txt
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| set_target_properties(openPMD.ADIOS1.Serial PROPERTIES | ||
| LINK_FLAGS "-Wl,--exclude-libs,ALL") | ||
| elseif("${CMAKE_SYSTEM_NAME}" MATCHES "Darwin") | ||
| check_linker_flag(CXX "-Wl,--exclude-libs,ALL" DARWIN_WO_XCODE) |
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This might be a CMake 3.18+ feature:
- https://gitlab.kitware.com/cmake/cmake/-/merge_requests/4777
- https://cmake.org/cmake/help/latest/module/CheckLinkerFlag.html
Thus:
- need to bump CMake dependency from 3.15+ to 3.18+
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Also: should use LINKER::
Expands to -Wl,--... on GCC and to -Xlinker --... on Clang.
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ax3l
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Feb 8, 2022
| set(IO_ADIOS1_SEQUENTIAL_SOURCE | ||
| src/Error.cpp | ||
| src/auxiliary/Filesystem.cpp | ||
| src/auxiliary/JSON.cpp |
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Needed because TracingJSON is now used in CommonADIOS1IOHandler.cpp
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| src/IO/ADIOS/CommonADIOS1IOHandler.cpp | ||
| src/IO/ADIOS/ADIOS1IOHandler.cpp) | ||
| src/IO/ADIOS/ADIOS1IOHandler.cpp | ||
| src/IO/IOTask.cpp) |
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Needed because we use openPMD::internal::operationAsString in CommonADIOS1IOHandler.cpp
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Some compiler toolchains on macOS do not use the XCode system compiler. For instance, conda-forge uses vanilla clang to build packages. In that case, the symbol hiding instructions we used on macOS were not effective, leading to errors like openPMD#1195. The current patch checks if the toolchain understands GCC/LLVM-ish linker flags on macOS and if it does, it adds them.
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Some compiler toolchains on macOS do not use the XCode tools. For instance, conda-forge uses vanilla clang to build packages combined with a cctools
ld64(similar to the macOS system linker) but without XCode.In that case, the symbol hiding instructions we used on macOS were not effective, leading to errors like #1195.
This also fixes regressions from #1101, similar to #1167.
The current patch checks if the toolchain understands GCC/LLVM/ld64-ish linker flags on macOS and if it does, it adds them.
Attention
llvm-strip< 14 is also broken, which is used in Conda-Forgecompilers-CMAKE_STRIPshould usecctools'stripcommand (needs to be set manually): Conda: llvm-strip <= 13 broken on Apple aarch64 M1 AMReX-Codes/pyamrex#35