[PD-dev] Help for macro syntax in m4 config files.
nicolas.danet at free.fr
nicolas.danet at free.fr
Sun Aug 16 17:27:56 CEST 2015
Hi list,
I'm not a m4/autotools expert and such i'm a bit stuck with codes below (from "m4/universal.m4")
https://github.com/pure-data/pure-data/blob/master/m4/universal.m4#L68
$1[]_CFLAGS="$[]$1[]_CFLAGS $_pd_universal"
$1[]_LDFLAGS="$[]$1[]_LDFLAGS $_pd_universal"
What's the meaning of the "$1[]" and "$[]$1[]" syntaxes?
I guess it is related to macro expansion (to properly obtained ARCH_CFLAGS and ARCH_LDFLAGS), but is that anybody could give me some explanations about that trick?
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