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use cpp-11 if installed on macOS

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alex 2021-08-09 16:59:05 +01:00
parent 508c8ea0c2
commit 932876f423
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1 changed files with 8 additions and 5 deletions
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13
tools/build/configure.py
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@ -606,11 +606,14 @@ if __name__ == "__main__":
# on macOS, /usr/bin/cpp defaults to clang rather than gcc (but we need gcc's)
if args.cpp is None and sys.platform == "darwin" and "Free Software Foundation" not in exec_shell(["cpp", "--version"]):
print("error: system C preprocessor is not GNU!")
print("This is a known issue on macOS - only clang's cpp is installed by default.")
print("Use 'brew' to obtain GNU cpp, then run this script again with the --cpp option, e.g.")
print(" ./configure --cpp cpp-11")
exit(1)
if "Free Software Foundation" in exec_shell(["cpp-11", "--version"]):
args.cpp = "cpp-11"
else:
print("error: system C preprocessor is not GNU!")
print("This is a known issue on macOS - only clang's cpp is installed by default.")
print("Use 'brew' to obtain GNU cpp, then run this script again with the --cpp option, e.g.")
print(" ./configure --cpp cpp-11")
exit(1)
# default version behaviour is to only do those that exist
if len(args.version) > 0: