Re: Require m4_ prefix from within the file?
Eric Blake <[email protected]>
| Newsgroups | gmane.comp.gnu.m4.general |
|---|---|
| Message-ID | <[email protected]> |
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 According to Paul Kirkaas on 3/17/2009 7:01 AM: > Hi; Hello Paul, > Is there any m4 command I can put inside the file to have the same > effect, so that users don't need to remember to invoke m4 with the -P > command line argument? Yes, you can rename macros on the fly. For example, define(`m4_defn', defn(`defn')) define(`m4_define', m4_defn(`define')) m4_define(`m4_undefine', m4_defn(`undefine')) m4_undefine(`defn', `define', `undefine') The manual also mentions this: http://www.gnu.org/software/m4/manual/m4.html#Defn And it is how Autoconf's m4sugar does things, in line 74-169 of: http://git.savannah.gnu.org/gitweb/?p=autoconf.git;a=blob;f=lib/m4sugar/m4sugar.m4;h=8356d08;hb=239b052 Note how m4sugar takes care to _not_ rename dnl, as well as being careful to create m4_exit rather than m4_m4exit. - -- Don't work too hard, make some time for fun as well! Eric Blake [email protected] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (Cygwin) Comment: Public key at home.comcast.net/~ericblake/eblake.gpg Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkm/p+YACgkQ84KuGfSFAYC8ZACeKiZPCLtKqush2wDcmnVhF5AA zGYAnROwsRPtB0qQTmjLwTNU6L8vcTZ6 =GMS6 -----END PGP SIGNATURE-----