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[libc++] Reimplement platform detection features without running on the test host 

It's sufficient to sniff the platform we're running on using the compiler
macros -- we don't need to run any code.
This commit is contained in:
Louis Dionne 2020-07-08 14:04:45 -04:00
parent e81c05777d
commit 2be4014fe6
1 changed files with 5 additions and 17 deletions
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22
libcxx/utils/libcxx/test/features.py
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@ -110,22 +110,10 @@ for locale, alts in locales.items():
]
# Add a feature representing the platform name: darwin, linux, windows, etc...
# Add features representing the platform name: darwin, linux, windows, etc...
features += [
Feature(name=lambda cfg: programOutput(cfg, """
#include <cstdio>
int main() {
#if defined(__APPLE__)
std::printf("darwin");
#elif defined(_WIN32)
std::printf("windows");
#elif defined(__NetBSD__)
std::printf("netbsd");
#elif defined(__linux__)
std::printf("linux");
#else
std::printf("unknown-platform");
#endif
}
"""))
Feature(name='darwin', when=lambda cfg: '__APPLE__' in compilerMacros(cfg)),
Feature(name='windows', when=lambda cfg: '_WIN32' in compilerMacros(cfg)),
Feature(name='linux', when=lambda cfg: '__linux__' in compilerMacros(cfg)),
Feature(name='netbsd', when=lambda cfg: '__NetBSD__' in compilerMacros(cfg))
]