memcached 2.1.0 requires libmemcached 1.0.10

[remicollet]

Latest version use memcached_server_*_version which are not available in libmemcached < 1.0.10 (tested with 1.0.8)

This only cast warning during build.
.../php_memcached.c:2646:5: warning: implicit declaration of function 'memcached_server_major_version' [-Wimplicit-function-declaration]
.../php_memcached.c:2647:5: warning: implicit declaration of function 'memcached_server_minor_version' [-Wimplicit-function-declaration]
.../php_memcached.c:2648:5: warning: implicit declaration of function 'memcached_server_micro_version' [-Wimplicit-function-declaration]

So build succeed, but created extension is unusable.
PHP Warning: PHP Startup: Unable to load dynamic library 'modules/memcached.so' - modules/memcached.so: undefined symbol: memcached_server_micro_version in Unknown on line 0

1/ I think this should be documented

2/ it will be great to detect this at configure time

Per example, adding in config.m4, after AC_MSG_RESULT([$PHP_LIBMEMCACHED_DIR])

O_LDFLAGS=$LDFLAGS
LDFLAGS="$LDFLAGS -L$PHP_LIBMEMCACHED_DIR/$PHP_LIBDIR"
AC_CHECK_LIB(memcached, memcached_server_major_version, , AC_MSG_ERROR([memcached support requires libmemcached >= 1.0.10]))
LDFLAGS=$O_LDFLAGS

[skirpichev]

or apply patch from debian to reduce version requirements:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=684949

[remicollet]

See pull request #27 which seems a better solution.

[iliaal]

Fixed.

[giac]

Hi,

I didn't get this compilation warning on master, but I get the same warning message when executing php:

PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php5/20100525/memcached.so' - /usr/lib/php5/20100525/memcached.so: undefined symbol: memcached_server_micro_version in Unknown on line 0

Should this be reopened or shall I open a new issue?

My system:
Ubuntu precise with php 5.4 and libmemcached 1.0.8 packaged by Ondřej Surý:
https://launchpad.net/~ondrej/+archive/php5?field.series_filter=precise

Using the default php and libmembached packages shipped with Ubuntu Precise the compilation fails, but that's issue #33

[giac]

I found what the problem was, see pull request #68
Those symbols have been introduced in libmemcached 1.0.9 but php_memcached.c was trying to use them from version 1.0.8.

[seyfer]

have same problem

fixed it

http://seyferseed.ru/php/nyuansy-s-nastrojkoj-memcached-debian.html

[mkoppanen]

@seyfer,

are you testing with currently released version or master? This has been fixed in master but it is a known issue for 2.1.0

[seyfer]

@mkoppanen , hi. I'm install with pecl
And in pecl 2.1.0 is current release.

How i can build master?

[mkoppanen]

git clone https://github.com/php-memcached-dev/php-memcached.git
cd php-memcached
phpize
./configure
make
make install

Closing this issue because it has been fixed.