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On Thu, 19 Oct 2006 20:43:28 +0000 (UTC) |
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"Duncan" <1i5t5.duncan@×××.net> wrote: |
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> Simon Stelling <blubb@g.o> posted 45379CDC.1010504@g.o, |
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> excerpted below, on Thu, 19 Oct 2006 17:42:20 +0200: |
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> |
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> > If you want to add instead of replace, CFLAGS="${CFLAGS} -fadded" |
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> > will do the job. Removing is done with CFLAGS=" ${CFLAGS}" ; |
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> > CFLAGS=${CFLAGS//-fremoved} |
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FWIW I think Simon meant: |
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CFLAGS=" ${CFLAGS}" ; CFLAGS=${CFLAGS// -fremoved} |
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assuming that adding the space was done to catch flags that match part |
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of longer flags. |
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> > So you can do effectively anything, given you know the bash |
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> > tricks ;) |
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> |
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> Hey, thanks! The add was a no-brainer here, but I hadn't thought |
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> about the remove trick yet. Very nice! =8^) |
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Watch also for flags that start with the same string; for example: |
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CFLAGS=${CFLAGS// -finline-functions} |
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would end up with "-called-once" in CFLAGS, if |
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"-finline-functions-called-once" was set. |
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Another easy one is doing: |
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CFLAGS=${CFLAGS// -g} |
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when CFLAGS has "-ggdb2" or similar set... |
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-- |
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Kevin F. Quinn |
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