Adding Automake list to Cc. On 2014-07-16 17:17 +0200, Roman Neuhauser wrote: > (this is a resend with a proper subject, sorry) > > i had some trouble figuring out how to get the include macro inside > another (parameterized) macro. [...] > this fails in configure.ac (autoconf 2.69): > > m4_define([nodot], [[\([_0-9a-zA-Z]+\)]]) > m4_define([reversion], [^nodot\.nodot\.nodot$]) > m4_define([getver], [regexp($1, reversion, $2)]) > m4_define([readver], [getver(m4_include($1), [\&])]) > m4_define([ver], readver([VERSION])) > > messages: > > aclocal: error: configure.ac:7: file '$1' does not exist > autoreconf: aclocal failed with exit status: 1 Autoconf/m4 have no problem with using m4_include in this manner (although you have some quoting issues). The problem here is aclocal (part of Automake) which basically works by grepping a bunch of input files for magic strings (such as m4_include). Unfortunately, as you have just discovered, this method comes with some severe limitations. I don't think the operation of aclocal is really discussed in the Automake manual. This is regrettable because it's easy to run into these problems by accident. > i can get it to work by quoting the m4_include macro name: > > m4_define([readver], [getver([m4_include]($1), [\&])]) You can trick aclocal really easily because it doesn't try to understand m4 syntax at all. If this approach works for your package, go for it. Cheers, -- Nick Bowler, Elliptic Technologies (http://www.elliptictech.com/) _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx https://lists.gnu.org/mailman/listinfo/autoconf
