Description:
------------
Configure is failing as follows:
checking for IMAP support... yes
checking for IMAP Kerberos support... no
checking for IMAP SSL support... /usr
checking for utf8_mime2text signature... new
checking for U8T_CANONICAL... no
configure: error: utf8_mime2text() has new signature, but U8T_CANONICAL is missing. This should not happen. Check config.log for additional information.
make: *** No targets specified and no makefile found.  Stop.

Here is the end portion of config.log:
configure:46967: checking for IMAP support
configure:47014: checking for IMAP Kerberos support
configure:47040: checking for IMAP SSL support
configure:47437:19: error: /mail.h: No such file or directory
configure:47456: checking for utf8_mime2text signature
configure:47474: gcc -c -I  conftest.c 1>&5
gcc: no input files
configure: failed program was:
#line 47461 "configure"
#include "confdefs.h"

#include <stdio.h>
#include <c-client.h>
      
int main() {

        SIZEDTEXT *src, *dst;
        utf8_mime2text(src, dst);
      
; return 0; }
configure:47503: checking for U8T_CANONICAL
configure:47519: gcc -c -I  conftest.c 1>&5
gcc: no input files
configure: failed program was:
#line 47508 "configure"
#include "confdefs.h"

#include <c-client.h>
      
int main() {

         int i = U8T_CANONICAL;
      
; return 0; }

The first error is a missing "/mail.h".  IMAP_INC_DIR is "" at line 47437 of configure.  Shouldn't this cause configure to fail at this point?

The second error is a missing c-client.h file.  This means that the test for utf8_mime2text cannot possibly compile.  Therefore, its results cannot be meaningful.  Therefore, utf8_mime2text does NOT have a new signature as claimed when configure finally fails.

The third "error" which claims "this cannot happen" is bogus because of the prior errors.


Reproduce code:
---------------
my configure line:
./configure --prefix=/usr \
  $* \
  --prefix=/usr \
  --sysconfdir=/etc \
  --disable-safe-mode \
  --enable-apc \
  --enable-apc-mmap \
  --enable-memory-limit \
  --enable-suhosin \
  --disable-magic-quotes \
  --enable-zend-multibyte \
  --enable-mbregex \
  --enable-tokenizer=shared \
  --with-config-file-scan-dir=/etc/php \
  --with-config-file-path=/etc/httpd \
  --with-mod_charset \
  --with-layout=PHP \
  --enable-sigchild \
  --enable-xml \
  --with-libxml-dir=/usr \
  --enable-simplexml \
  --enable-spl \
  --enable-filter \
  --disable-debug \
  --with-openssl=shared \
  --with-pcre-regex=/usr \
  --with-zlib=shared,/usr \
  --enable-bcmath=shared \
  --with-bz2=shared,/usr \
  --enable-calendar=shared \
  --enable-ctype=shared \
  --with-curl=shared \
  --with-curlwrappers \
  --enable-dba=shared \
  --with-gdbm=/usr \
  --with-db4=/usr \
  --enable-dbase=shared \
  --enable-exif=shared \
  --enable-ftp=shared \
  --with-gd=shared \
  --with-jpeg-dir=/usr \
  --with-png-dir=/usr \
  --with-zlib-dir=/usr \
  --with-xpm-dir=/usr \
  --with-freetype-dir=/usr \
  --with-t1lib=/usr \
  --enable-gd-native-ttf \
  --enable-gd-jis-conv \
  --with-gettext=shared,/usr \
  --with-gmp=shared,/usr \
  --with-iconv=shared \
  --with-imap-ssl=/usr \
  --with-imap=$IMAPLIBDIR \
  --with-ldap=shared \
  --enable-mbstring=shared \
  --with-hash \
  --with-mhash=shared,/usr \
  --with-mysql=shared,/usr \
  --with-mysqli=shared,/usr/bin/mysql_config \
  --enable-pdo=shared \
  --with-pdo-mysql=shared,/usr \
  --with-pdo-sqlite=shared \
  --with-pspell=shared,/usr \
  --with-mm=/usr \
  --enable-shmop=shared \
  --with-snmp=shared,/usr \
  --enable-soap=shared \
  --enable-sockets \
  --with-sqlite=shared \
  --enable-sqlite-utf8 \
  --with-regex=php \
  --enable-sysvmsg \
  --enable-sysvsem \
  --enable-sysvshm \
  --enable-wddx=shared \
  --with-xsl=shared,/usr \
  --enable-zip=shared \
  --with-tsrm-pthreads \
  --enable-shared=yes \
  --enable-static=no \
  --with-gnu-ld \
  --with-pic \
  --build=$ARCH-slackware-linux

This is copied directly from the Slackware 12.1 php.Slackbuild script,  This is the version found on Slackware's ftp site under the patches subdirectory for php 5.2.6.


Expected result:
----------------
Configure should probably have failed on the first error.  It should definitely have failed on the second.

Actual result:
--------------
configure continued to run after two errors that should have stopped it.