19 lines
964 B
Diff
19 lines
964 B
Diff
diff --git a/gcc/config/darwin-c.c b/gcc/config/darwin-c.c
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index aa5d2f2..9440b30 100644
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--- a/gcc/config/darwin-c.c
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+++ b/gcc/config/darwin-c.c
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@@ -731,6 +731,13 @@ darwin_cpp_builtins (cpp_reader *pfile)
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builtin_define_with_value ("__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__",
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macosx_version_as_macro(), false);
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+ /* Until we implement __has-builtin, __has_feature, __has_extension it's
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+ better to jam them to 0 than to fight the cases where system headers
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+ have not been tested with GCC. */
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+ builtin_define_with_value ("__has_builtin(X)", "0", false);
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+ builtin_define_with_value ("__has_feature(X)", "0", false);
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+ builtin_define_with_value ("__has_extension(X)", "0", false);
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+
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/* Since we do not (at 4.6) support ObjC gc for the NeXT runtime, the
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following will cause a syntax error if one tries to compile gc attributed
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items. However, without this, NeXT system headers cannot be parsed
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