Skip to content

Instantly share code, notes, and snippets.

@tibbe
Forked from mzero/ghc-clang-wrapper
Last active January 3, 2016 10:19
Show Gist options
  • Save tibbe/8448715 to your computer and use it in GitHub Desktop.
Save tibbe/8448715 to your computer and use it in GitHub Desktop.
Strip -nodefaultlibs flag to avoid warning This removes this warning: clang: warning: argument unused during compilation: '-nodefaultlibs'
#!/bin/sh
inPreprocessorMode () {
hasE=0
hasU=0
hasT=0
for arg in "$@"
do
if [ 'x-E' = "x$arg" ]; then hasE=1; fi
if [ 'x-undef' = "x$arg" ]; then hasU=1; fi
if [ 'x-traditional' = "x$arg" ]; then hasT=1; fi
done
[ "$hasE$hasU$hasT" = '111' ]
}
gccIsClang () {
gcc --version 2>/dev/null | grep -q clang
}
extraClangArgs="-Wno-invalid-pp-token -Wno-unicode -Wno-trigraphs"
adjustPreprocessorLanguage () {
newArgs=''
while [ $# -gt 0 ]
do
newArgs="$newArgs $1"
if [ "$1" = '-x' ]
then
shift
if [ $# -gt 0 ]
then
if [ "$1" = 'c' ]
then
newArgs="$newArgs assembler-with-cpp"
else
newArgs="$newArgs $1"
fi
fi
fi
shift
done
echo $newArgs
}
installThisScript () {
if [ \! -x /usr/bin/ghc-clang-wrapper ]
then
echo "Copy this execute script to /usr/bin/ghc-clang-wrapper, then re-run it."
echo "You can copy it with these commands:"
echo
echo sudo cp $0 /usr/bin/ghc-clang-wrapper
echo sudo chmod 755 /usr/bin/ghc-clang-wrapper
echo sudo ghc-clang-wrapper
exit 1
fi
settings=`ls -1 /Library/Frameworks/GHC.framework/Versions/7*/usr/lib/ghc-7*/settings 2>/dev/null`
if [ "$settings" = '' ]
then
echo "You don't seem to have Haskell Platform installed."
echo "Visit http://www.haskell.org/platform/ to get and install it."
echo "Then run this script again."
echo
echo "If you have GHC installed in a non-standard place, find the file"
echo "named 'settings', that is alongside the compiler, and edit the"
echo "c compiler line to read:"
echo ' ("C compiler command", "/usr/bin/ghc-clang-wrapper"),'
exit 1
fi
anyNeedPatching=0
for sfile in $settings
do
if grep -q ghc-clang-wrapper $sfile
then
echo ALREADY PATCHED: $sfile
else
if [ `id -u` -eq 0 ]
then
sed -e '/C compiler command/s:"[^ ]*gcc":"/usr/bin/ghc-clang-wrapper":' -i '.bak' $sfile
echo PATCHED: $sfile
else
echo WOULD PATCH: $sfile
anyNeedPatching=1
fi
fi
done
if [ $anyNeedPatching -eq 1 ]
then
echo "Please run this script sudo to actually patch GHC:"
echo sudo $0
fi
}
if [ $# -eq 0 ]
then
installThisScript
else
if gccIsClang
then
if inPreprocessorMode "$@"
then
exec gcc $extraClangArgs `adjustPreprocessorLanguage "$@"`
else
exec gcc $extraClangArgs "${@/-nodefaultlibs/}"
fi
else
exec gcc "$@"
fi
fi
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment