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release/20.x: [Driver] Fix _XOPEN_SOURCE definition on Solaris (#137141) #140044

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Merged
merged 1 commit into from
May 27, 2025
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release/20.x: [Driver] Fix _XOPEN_SOURCE definition on Solaris (#137141) #140044

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9 changes: 1 addition & 8 deletions clang/lib/Basic/Targets/OSTargets.h
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Original file line number Diff line number Diff line change
Expand Up @@ -618,14 +618,7 @@ class LLVM_LIBRARY_VISIBILITY SolarisTargetInfo : public OSTargetInfo<Target> {
DefineStd(Builder, "unix", Opts);
Builder.defineMacro("__svr4__");
Builder.defineMacro("__SVR4");
// Solaris headers require _XOPEN_SOURCE to be set to 600 for C99 and
// newer, but to 500 for everything else. feature_test.h has a check to
// ensure that you are not using C99 with an old version of X/Open or C89
// with a new version.
if (Opts.C99)
Builder.defineMacro("_XOPEN_SOURCE", "600");
else
Builder.defineMacro("_XOPEN_SOURCE", "500");
Builder.defineMacro("_XOPEN_SOURCE", "600");
if (Opts.CPlusPlus) {
Builder.defineMacro("__C99FEATURES__");
Builder.defineMacro("_FILE_OFFSET_BITS", "64");
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