Commit 1f085e11 authored by Committed by Brad King
OS X: Resolve compiler in /usr/bin to that reported by Xcode xcrun
The compiler in the PATH on mac is a stub for a different delegate depending on the environment. Rather than requiring xcode-select to change the used Xcode globally, users should be able to choose the compiler per-session. That is possible with the DEVELOPER_DIR environment variable. However, the environment can change between running CMake and invoking the build. In such cases, CMake prefers to record the relevant paths from the environment and use them when invoking the build. That is not currently done for the compilers on APPLE, so the compiler used is not the one reported when running cmake: $ DEVELOPER_DIR=/Applications/Xcode2.app/Contents/Developer/ cc --version Apple LLVM version 6.0 (clang-600.0.51) (based on LLVM 3.5svn) Target: x86_64-apple-darwin13.4.0 Thread model: posix $ DEVELOPER_DIR=/Applications/Xcode.app/Contents/Developer/ cc --version Apple LLVM version 5.1 (clang-503.0.38) (based on LLVM 3.4svn) Target: x86_64-apple-darwin13.4.0 Thread model: posix Update that now by querying Xcode for the correct compiler path if the compiler located by ordinary means is located in /usr/bin.
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