m4_define([m4_provided], [
m4_provide_if([AC_PROG_LIBTOOL], [], [
m4_provide_if([LT_INIT], [],
[m4_warn([syntax], [Libtool required by $1])])])])])
...
m4_provided([MY_MACRO_NAME])
I didn't count the number of closing brackets.
What is the m4_provide_if? I didn't find it in the manual of autoconf
and m4.
It's in m4sugar.
Anyways, does this guarantee me that the user did INVOKE the give
macros, not merely that they exist?
Yes.
Paolo
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