If you want to use autoconf-2.5x with PHP, make sure that you
run a "./cvsclean" after "cvs update". Autoconf-2.5x will not
correctly rebuild configure/php_config.h in many cases.
This happens under the following circumstances:
- configure.in, acinclude.m4 did not change
- any config.m4 was updated
Due to its architectural slowness, autoconf-2.5x includes a
cache which fails to properly detect or check dependencies.
It is becoming more and more apparent that there is a need
for forking autoconf-2.13 and merging positive changes from
2.5x.
Try it out yourself:
$ echo "echo hi" >> ext/ircg/config.m4
$ ./buildconf
$ grep "echo hi" configure|wc -l
0
$ ./cvsclean
$ ./buildconf
$ grep "echo hi" configure|wc -l
1
- Sascha
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