Fix version detection for out-of-source builds
Git was called in the build directory and not the source directory. This works fine when the build directory resides within the source repository, but doesn't work for out-of-source builds. Example: ``` ~/zigbuild$ cmake ../zig fatal: not a git repository (or any of the parent directories): .git Configuring zig version 0.2.0+ ``` Use Git's `-C <path>` flag to always point to the source directory so that it doesn't matter where the build directory lives.
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@ -22,7 +22,7 @@ set(ZIG_VERSION "${ZIG_VERSION_MAJOR}.${ZIG_VERSION_MINOR}.${ZIG_VERSION_PATCH}"
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find_program(GIT_EXE NAMES git)
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if(GIT_EXE)
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execute_process(
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COMMAND ${GIT_EXE} name-rev HEAD --tags --name-only --no-undefined --always
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COMMAND ${GIT_EXE} -C ${CMAKE_SOURCE_DIR} name-rev HEAD --tags --name-only --no-undefined --always
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OUTPUT_VARIABLE ZIG_GIT_REV
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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if(ZIG_GIT_REV MATCHES "\\^0$")
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