+ #PYTHON_CFLAGS=`$PYTHON_CONFIG --cflags | sed -e 's/-[[WDOm]][[[:alnum:][:punct:]]][[[:alnum:][:punct:]]]*//g' | sed -e 's/-arch @<:@^@<:@:space:@:>@@:>@*//g'`
+ # The above sed BRE matches parts of legal options, stipping down part of that option, resulting in invalid gcc arguments. Gentoo Bug #415793
+ # For instance, '-floop-stip-mime' becomes '-floop-strip', and '-fvect-cost-model' becomes '-fvect-cost'.
+ # Tentative fix to require a non alphanumeric character before the initial hyphen of the BRE or the hyphen being the first character in the string.
+ PYTHON_CFLAGS=`$PYTHON_CONFIG --cflags | sed -e 's/\(^\|[[^[:alnum:]]]\)-[[WDOm]][[[:alnum:][:punct:]]][[[:alnum:][:punct:]]]*//g' | sed -e 's/-arch @<:@^@<:@:space:@:>@@:>@*//g'`