The test program for utf8_to_mutf7 attempts to call it without
arguments. The function expects one argument, however, and this leads
to a segfault as reported in PHP bug #66909.
The test program is using the PHP_IMAP_TEST_BUILD macro which
complicates things a little. To keep this diff small, the
PHP_IMAP_TEST_BUILD macro was modified to pass a fifth argument
"extra-source" to the PHP_TEST_BUILD macro. The check for
utf8_to_mutf7 was then modified to check for a dummy function,
utf8_to_mutf7_php, which passes the correct number of arguments to
utf8_to_mutf7.
PHP-Bug: https://bugs.php.net/bug.php?id=66909
Gentoo-Bug: https://bugs.gentoo.org/show_bug.cgi?id=376735
When the user passes --with-db4=DIR to ./configure, the directory DIR
is searched for a number of paths in order of preference. These paths
contain possible locations for Berkeley DB (BDB) to be installed, and
since PHP only supports BDB-4.x and BDB-5.x, it's important that (for
example) version 5.1 be autodetected before falling back to
/usr/include/db.h which can point to BDB-6.x.
The newer BDB-5.3 works with PHP, and if only BDB-5.3 is installed on
the user's system, the current ./configure script is fine. However, if
both BDB-5.3 and BDB-6.0 are installed, version 5.3 is not
autodetected, causing BDB-6.0 to be used. The ./configure step then fails.
This commit adds autodetection for BDB-5.3, and fixes a bug reported
on Gentoo at https://bugs.gentoo.org/show_bug.cgi?id=564824.
This has been requested by Kaspar Brand who provides
sni.velox.ch. That site is only for interactive
testing and not for unit/integration/regression testing.
Although this test is run only in special cases (when
SNI_TESTS is defined) it should still be removed.
Also this test is not reliable as it depends on external
resources.
