hook_postconfigure()

For example, again from GCC:

function hook_postconfigure {
    echo "s/^GCC_CFLAGS *=/&-I\$\(QNX_TARGET\)\/usr\/include /"  >/tmp/fix.$$
    if [ ${SYSNAME} == nto ]; then
        echo "s/OLDCC = cc/OLDCC = .\/xgcc -B.\/ -I \$\(QNX_TARGET\)\/usr\/include/" >>/tmp/fix.$$
        echo "/^INCLUDES = /s/\$/ -I\$\(QNX_TARGET\)\/usr\/include/" >>/tmp/fix.$$
        if [ ${target} == ntosh ]; then
            # We've set up GCC to support both big and little endian, but
            # we only actually support little endian right now. This will
            # cause the configures for the target libraries to fail, since
            # it will test the compiler by attempting a big endian compile
            # which won't link due to a missing libc & crt?.o files.
            # Hack things by forcing compiles/links to always be little endian
            sed -e "s/^CFLAGS_FOR_TARGET *=/&-ml /"  <Makefile >1.$$
            mv 1.$$ Makefile
        fi
    else
        # Only need to build libstdc++ & friends on one host
        rm -Rf ${target}

        echo "s/OLDCC = cc/OLDCC = .\/xgcc -B.\//" >>/tmp/fix.$$
    fi
    cd gcc
    sed -f/tmp/fix.$$ <Makefile >1.$$
    mv 1.$$ Makefile
    cd ..
    rm /tmp/fix.$$
}