A + or - prefix added to the beginning of a flag in IUSE creates a default USE setting that respectively enables or disables the corresponding USE flag.
Support for the ECONF_SOURCE variable, which is also supported by econf, has been added to the default src_compile implementation.
src_compile() {
if [[ -x ${ECONF_SOURCE:-.}/configure ]] ; then
econf
fi
if [ -f Makefile ] || [ -f GNUmakefile ] || [ -f makefile ] ; then
emake || die "emake failed"
fi
}