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Merge pull request #4679 from YosysHQ/emil/readme-mac-lto 

readme: tell macOS users to use brew clang with LTO
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Emil J 2024-11-08 19:26:28 +01:00 committed by GitHub
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@ -130,9 +130,15 @@ lld by enabling LTO:
$ make ENABLE_LTO=1
On macOS, LTO requires using clang from homebrew which isn't in PATH
rather than xcode clang.
$ make ENABLE_LTO=1 CXX=$(brew --prefix)/opt/llvm/bin/clang++
For other compilers and build configurations it might be
necessary to make some changes to the config section of the
Makefile.
Makefile. It's also an alternative way to set the make variables
mentioned above.
$ vi Makefile # ..or..
$ vi Makefile.conf