Impossible de faire fonctionner GD avec PHP

Bonjour,
Je ne parviens pas à faire fonctionner gd avec php.
J’ai désintallé réinstallé php et gd plusieurs fois, vérifié les dépendances de gd.
Rien n’y fait…

Voiçi la liste des paquetages installés :

  • libapache2-mod-php5 5.4.4-14+deb7u8
  • php5-cli 5.4.4-14+deb7u8
  • php-pear 5.4.4-14+deb7u8
  • php5-gd 5.4.4-14+deb7u8

Dépendances de php-gd :

  • php5-common 5.4.4-14+deb7u8
  • ibc6 2.13-38+deb7u1
  • libfreetype6 2.4.9-1.1
  • libgd2-xpm 2.0.36~rc1~dfsg-6.1
  • libjpeg8 8d-1
  • libpng12-0 1.2.49-1
  • libx11-6 2:1.5.0-1+deb7u1
  • libxpm4 1:3.5.10-1
  • ucf 3.0025+nmu3
  • zlib1g 1:1.2.7.dfsg-13

Voilà ce que donne php -m :

[code]$php -m
PHP Warning: PHP Startup: Unable to load dynamic library ‘/usr/lib/php5/20100525/gd.so’ - /usr/lib/php5/20100525/gd.so: undefined symbol: gdImageCreateFromPngCtx in Unknown on line 0
[PHP Modules]
bcmath
bz2
calendar
Core
ctype
date
dba
dom
ereg
exif
fileinfo
filter
ftp
gettext
hash
iconv
json
libxml
mbstring
mhash
openssl
pcntl
pcre
PDO
pdo_pgsql
pgsql
Phar
posix
Reflection
session
shmop
SimpleXML
soap
sockets
SPL
standard
sysvmsg
sysvsem
sysvshm
tokenizer
wddx
xml
xmlreader
xmlwriter
zip
zlib

[Zend Modules]

[/code]

Et enfin ldd :

$ ldd -d /usr/lib/php5/20100525/gd.so 
	linux-vdso.so.1 =>  (0x00007fff735ff000)
	libgd.so.2 => /usr/local/lib/libgd.so.2 (0x00007f3b4268e000)
	libfreetype.so.6 => /usr/local/lib/libfreetype.so.6 (0x00007f3b42402000)
	libX11.so.6 => /usr/lib/x86_64-linux-gnu/libX11.so.6 (0x00007f3b420c6000)
	libXpm.so.4 => /usr/lib/x86_64-linux-gnu/libXpm.so.4 (0x00007f3b41eb5000)
	libpng12.so.0 => /lib/x86_64-linux-gnu/libpng12.so.0 (0x00007f3b41c8e000)
	libz.so.1 => /usr/local/lib/libz.so.1 (0x00007f3b41a76000)
	libjpeg.so.8 => /usr/lib/x86_64-linux-gnu/libjpeg.so.8 (0x00007f3b4183c000)
	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f3b414b1000)
	libfontconfig.so.1 => /usr/lib/x86_64-linux-gnu/libfontconfig.so.1 (0x00007f3b41279000)
	libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f3b40ff7000)
	libxcb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb.so.1 (0x00007f3b40dd7000)
	libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f3b40bd2000)
	/lib64/ld-linux-x86-64.so.2 (0x00007f3b42b03000)
	libexpat.so.1 => /lib/x86_64-linux-gnu/libexpat.so.1 (0x00007f3b409a8000)
	libXau.so.6 => /usr/lib/x86_64-linux-gnu/libXau.so.6 (0x00007f3b407a4000)
	libXdmcp.so.6 => /usr/lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007f3b4059f000)
undefined symbol: gdImageCreateFromPngCtx	(/usr/lib/php5/20100525/gd.so)
undefined symbol: php_stream_stdio_ops	(/usr/lib/php5/20100525/gd.so)
undefined symbol: php_sig_jpg	(/usr/lib/php5/20100525/gd.so)
undefined symbol: php_sig_png	(/usr/lib/php5/20100525/gd.so)
undefined symbol: gdImageCreateFromPng	(/usr/lib/php5/20100525/gd.so)
undefined symbol: php_sig_gif	(/usr/lib/php5/20100525/gd.so)
undefined symbol: gdImagePngCtxEx	(/usr/lib/php5/20100525/gd.so)
undefined symbol: convert_to_long	(/usr/lib/php5/20100525/gd.so)
undefined symbol: _php_stream_cast	(/usr/lib/php5/20100525/gd.so)
undefined symbol: zend_parse_parameters	(/usr/lib/php5/20100525/gd.so)
undefined symbol: zend_register_ini_entries	(/usr/lib/php5/20100525/gd.so)
undefined symbol: _zend_list_find	(/usr/lib/php5/20100525/gd.so)
undefined symbol: php_check_open_basedir	(/usr/lib/php5/20100525/gd.so)
undefined symbol: ap_php_snprintf	(/usr/lib/php5/20100525/gd.so)
undefined symbol: zend_wrong_param_count	(/usr/lib/php5/20100525/gd.so)
undefined symbol: zend_register_string_constant	(/usr/lib/php5/20100525/gd.so)
undefined symbol: _safe_emalloc	(/usr/lib/php5/20100525/gd.so)
undefined symbol: convert_to_double	(/usr/lib/php5/20100525/gd.so)
undefined symbol: php_open_temporary_file	(/usr/lib/php5/20100525/gd.so)
undefined symbol: zend_fetch_resource	(/usr/lib/php5/20100525/gd.so)
undefined symbol: php_info_print_table_row	(/usr/lib/php5/20100525/gd.so)
undefined symbol: add_assoc_string_ex	(/usr/lib/php5/20100525/gd.so)
undefined symbol: _zend_list_delete	(/usr/lib/php5/20100525/gd.so)
undefined symbol: zend_register_resource	(/usr/lib/php5/20100525/gd.so)
undefined symbol: zend_hash_num_elements	(/usr/lib/php5/20100525/gd.so)
undefined symbol: zend_hash_index_find	(/usr/lib/php5/20100525/gd.so)
undefined symbol: zend_ini_long	(/usr/lib/php5/20100525/gd.so)
undefined symbol: add_assoc_bool_ex	(/usr/lib/php5/20100525/gd.so)
undefined symbol: zend_list_insert	(/usr/lib/php5/20100525/gd.so)
undefined symbol: zend_register_long_constant	(/usr/lib/php5/20100525/gd.so)
undefined symbol: zend_hash_get_current_key_ex	(/usr/lib/php5/20100525/gd.so)
undefined symbol: php_error_docref0	(/usr/lib/php5/20100525/gd.so)
undefined symbol: php_info_print_table_end	(/usr/lib/php5/20100525/gd.so)
undefined symbol: display_ini_entries	(/usr/lib/php5/20100525/gd.so)
undefined symbol: zend_register_list_destructors_ex	(/usr/lib/php5/20100525/gd.so)
undefined symbol: zend_hash_get_current_data_ex	(/usr/lib/php5/20100525/gd.so)
undefined symbol: _php_stream_copy_to_mem	(/usr/lib/php5/20100525/gd.so)
undefined symbol: php_write	(/usr/lib/php5/20100525/gd.so)
undefined symbol: _array_init	(/usr/lib/php5/20100525/gd.so)
undefined symbol: _convert_to_string	(/usr/lib/php5/20100525/gd.so)
undefined symbol: _efree	(/usr/lib/php5/20100525/gd.so)
undefined symbol: _php_stream_seek	(/usr/lib/php5/20100525/gd.so)
undefined symbol: gdImageCreateFromPng	(/usr/lib/php5/20100525/gd.so)
undefined symbol: _php_stream_open_wrapper_ex	(/usr/lib/php5/20100525/gd.so)
undefined symbol: _php_stream_free	(/usr/lib/php5/20100525/gd.so)
undefined symbol: _php_stream_eof	(/usr/lib/php5/20100525/gd.so)
undefined symbol: _php_stream_read	(/usr/lib/php5/20100525/gd.so)
undefined symbol: _estrndup	(/usr/lib/php5/20100525/gd.so)
undefined symbol: _emalloc	(/usr/lib/php5/20100525/gd.so)
undefined symbol: _php_stream_tell	(/usr/lib/php5/20100525/gd.so)
undefined symbol: zend_hash_internal_pointer_reset_ex	(/usr/lib/php5/20100525/gd.so)
undefined symbol: _zval_copy_ctor_func	(/usr/lib/php5/20100525/gd.so)
undefined symbol: zend_hash_move_forward_ex	(/usr/lib/php5/20100525/gd.so)
undefined symbol: add_assoc_long_ex	(/usr/lib/php5/20100525/gd.so)
undefined symbol: add_next_index_long	(/usr/lib/php5/20100525/gd.so)
undefined symbol: php_info_print_table_start	(/usr/lib/php5/20100525/gd.so)

Merci d’avance de votre aide.