With libmcrypt-2.4.7 (shared)

test.php
<? phpinfo();?>

(gdb) bt
#0  0x4000af20 in _dl_debug_state () at ripemd.c:401
#1  0x4000ac3b in _dl_catch_error () at ripemd.c:401
#2  0x407bfd3d in _dl_open (file=0x8328350 "/usr/local/lib/libmcrypt/wake.so", mode=257, caller=0xbfffd774)
    at dl-open.c:232
#3  0x4003faa7 in dlopen_doit (a=0xbfffd888) at dlopenold.c:45
#4  0x4000ac3b in _dl_catch_error () at ripemd.c:401
#5  0x4003f8b9 in _dlerror_run (operate=0x4003fa7c <dlopen_doit>, args=0xbfffd888) at dlerror.c:125
#6  0x4003fa6b in __dlopen_nocheck (file=0x8328350 "/usr/local/lib/libmcrypt/wake.so", mode=257)
    at dlopenold.c:61
#7  0x40094ba3 in sys_dl_open (handle=0x83282a0, filename=0x8328350 "/usr/local/lib/libmcrypt/wake.so")
    at ltdl.c:266
#8  0x400951a5 in tryall_dlopen (handle=0xbfffda04, filename=0x8328350 "/usr/local/lib/libmcrypt/wake.so")
    at ltdl.c:943
#9  0x40095307 in find_module (handle=0xbfffda04, dir=0x8322e40 "/usr/local/lib/libmcrypt/", 
    libdir=0x8327de0 "/usr/local/lib/libmcrypt", dlname=0x8328280 "wake.so", old_name=0x8328290 "wake.a", 
    installed=1) at ltdl.c:986
#10 0x400961d4 in lt_dlopen (filename=0x8326f0b "wake.la") at ltdl.c:1340
#11 0x400964fc in lt_dlopenext (filename=0x8326f0b "wake.la") at ltdl.c:1423
#12 0x4009176f in mcrypt_module_close () at mcrypt_modules.c:48
#13 0x40090e9f in mcrypt_free_p () at mcrypt_extra.c:211
#14 0x40090b37 in mcrypt_list_algorithms (libdir=0x0, size=0xbfffe334) at mcrypt_extra.c:100
#15 0x80a0f7a in php_info_mcrypt (zend_module=0x82de1e0) at mcrypt.c:351
#16 0x80da71e in _display_module_info (module=0x82de1e0, arg=0xbfffe3e4) at info.c:50
#17 0x811dca9 in zend_hash_apply_with_argument (ht=0x82b9bc0, apply_func=0x80da6ec <_display_module_info>, 
    argument=0xbfffe3e4) at zend_hash.c:711
#18 0x80d9b40 in php_print_info (flag=-1) at info.c:256
#19 0x80da2b9 in php_if_phpinfo (ht=0, return_value=0x832567c, this_ptr=0x0, return_value_used=0) at info.c:464
#20 0x8149b65 in execute (op_array=0x83255f4) at ./zend_execute.c:1519
#21 0x81188fb in zend_execute_scripts (type=8, file_count=3) at zend.c:729
#22 0x80914db in php_execute_script (primary_file=0xbffff6b4) at main.c:1221
#23 0x8127211 in apache_php_module_main (r=0x831feac, display_source_mode=0) at sapi_apache.c:89
#24 0x808eb53 in send_php () at ripemd.c:401
#25 0x808ee32 in send_parsed_php () at ripemd.c:401
#26 0x8156165 in ap_invoke_handler () at ripemd.c:401
#27 0x81673dc in process_request_internal () at ripemd.c:401
#28 0x8167789 in ap_process_request () at ripemd.c:401

With libmcrypt-2.4.7-static - Working.