Bug #12871: updating build-system to autoconf 2.5x

From: jan@kneschke.de Operating system: PHP version: 4.0CVS-2001-08-21 PHP Bug Type: *Compile Issues Bug description: updating build-system to autoconf 2.5x After updating autoconf to 2.52 I've noticed that php is working with this autoconf version yet. Even 'autoupdate' didn't helped to fix it. I've taken a look at the generated shell code and noticed that some 'if-then-else' had an empty else-tree (else fi) which caused several unexpected shell exits. These empty else-trees were the result of the following commands: AC_CHECK_FUNC(yp_get_default_domain, [php_no_nsl_checks=yes],[ ]) ^^^ That [ ] is the problem. If it is replaced by [] the else tree won't be build. This applies to nearly all macros. The only exception is AC_DEFINE which requires a [ ] as third parameter if it is set at all. Another issue was the PHP_SUBST in the acinclude.m4. I don't know what the five PHP_SUBST are doing there, but they will have to go into the configure.in the satisfy autoconf. (acinclude.m4:930 [somewhere there]) PHP_SUBST(EXT_SUBDIRS) PHP_SUBST(EXT_STATIC) PHP_SUBST(EXT_SHARED) PHP_SUBST(EXT_LIBS) PHP_SUBST(EXT_LTLIBS) I've uploaded the corresponding patch to http://jan.kneschke.de/projects/phpbugs/php4-20010821.diff The patch is just a proof of concepts and doesn't fix every glitches, but it provides an working example. -- Edit bug report at: http://bugs.php.net/?id=12871&edit=1