Php & Mcrypt

Hello, I can't compile Php with Mcrypt. When I configure with this line : ./configure --with-mcrypt=../mcrypt-2.5.0/src or ./configure --with-mcrypt=../mcrypt-2.5.0 I always this the fellowing error when I "make" : gcc -g -O2 -O2 -I. -I. -I/usr/local/include -c functions/mcrypt.c -o functions/mcrypt.o functions/mcrypt.c: In function `php_minit_mcrypt': functions/mcrypt.c:141: `TRIPLEDES' undeclared (first use in this function) functions/mcrypt.c:141: (Each undeclared identifier is reported only once functions/mcrypt.c:141: for each function it appears in.) functions/mcrypt.c:166: `MCRYPT_RC6_256' undeclared (first use in this function) functions/mcrypt.c:168: `MCRYPT_RC6_128' undeclared (first use in this function) functions/mcrypt.c:169: `MCRYPT_RC6_192' undeclared (first use in this function) make: *** [functions/mcrypt.o] Error 1 Help me, please Thanks Have a nice day Ghislain