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Recognize the UNAME_RELEASE environment variable to match Darwin's uname.
When this variable is set, "uname -r" will return its value instead of the real OS version. Make this affect LLVM's triple for consistency. <rdar://problem/9919167> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137111 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -22,12 +22,18 @@
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#include <sys/utsname.h>
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#include <cctype>
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#include <string>
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#include <cstdlib> // ::getenv
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using namespace llvm;
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static std::string getOSVersion() {
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struct utsname info;
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// Recognize UNAME_RELEASE environment variable to match Darwin uname.
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const char *UnameOverride = ::getenv("UNAME_RELEASE");
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if (UnameOverride && UnameOverride[0] != '\0')
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return UnameOverride;
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if (uname(&info))
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return "";
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