ce1141982b
git-subtree-dir: third_party/mason git-subtree-split: c7a967003a7113a17faafe3b41082ad1ae3f1c2f
40 lines
1.4 KiB
Markdown
40 lines
1.4 KiB
Markdown
## llvm
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This is a package of llvm. Multiple packages are based on repackaging the binaries from this one.
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### Depends
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#### On Linux
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- >= Ubuntu precise
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- binutils 2.27 from mason for -flto support
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#### On OS X
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- OS X >= 10.11
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- On XCode >= 8 installed to `/Applications/Xcode.app` such that `xcode-select -p` returns `/Applications/Xcode.app/Contents/Developer`
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If you don't have Xcode installed in `/Applications` you can still use the clang++ in this package but you need to set:
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1) `-isysroot` to point at your Mac SDK (the value returned from `xcrun --show-sdk-path`)
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2) Add an include flag to point at your C++ headers which are generally at `ls $(dirname $(xcrun --find clang++))/../include/c++/v1`. For the command line tools this directory is at `/Library/Developer/CommandLineTools/usr/include/c++/v1/`
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### Details of builds
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- OS X build done on OS X 10.12.1
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- Linux build done on Ubuntu precise
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Builds (and rebuilds) are done using `utils/rebuild-llvm-tools.sh`
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#### OS X details
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On MacOS we use the apple system clang++ to compile and link against the apple system libc++.
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#### Linux details
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On Linux we use Ubuntu Precise in order to ensure that binaries can be run on Ubuntu Precise and newer platforms.
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We link clang++ and other llvm c++ tools to libc++ (the one within the build) to avoid clang++ itself depending on a specific libstdc++ version.
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The clang++ binary still defaults to building and linking linux programs against libstdc++. |