[gentoo-dev] CUSTOM cflags replacement snippet

[Chris White]

All,

    I created this quick little function to recursively patch Makefiles 
with custom CFLAGS.

custom_cflags() {
    for directories in *
    do
        if [ -d $directories -a -e $directories/Makefile ]
        then
            cd $directories
            for subdirectories in *
            do
                if [ -d $subdirectories -a -e $subdirectories/Makefile ]
                then
                    custom_cflags
                fi
            done

            sed -i \
            -e "s:^CFLAGS.*:CFLAGS = ${CFLAGS}:" Makefile \
            -e "s:^CXXFLAGS.*:CXXFLAGS = ${CXXFLAGS}:" Makefile \
            || die "Could not patch $directories/Makefile for custom CFLAGS"

            cd ..
        fi
    done
}

Known issues:

if CFLAGS have something such as -Iblah or -D__BREAKS__WITHOUT__THIS__, 
you're screwed. 
if CFLAGS are added onto at some point (CFLAGS = $CFLAGS -mnewflag), 
you're screwed.
It's not perfect, but it works for me in most cases.

Go ahead and flame, just thought I'd toss it here to make people's lives 
2% easier :).

-- 
Chris White <chriswhite@g.o>
------------------------
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