sem_getが使えない

SL6.1 + php53uの環境で、sem_get()をコールするとエラーになる。

PHP Fatal error: Call to undefined function sem_get() in /var/www/html/blog/wp-content/themes/lumiukko/test_shm.php on line 2

phpのconfigure-optionはこんな感じ。どうしたらいいのかなぁ。。。

php-config --configure-options
--build=x86_64-unknown-linux-gnu --host=x86_64-unknown-linux-gnu --target=x86_64-redhat-linux-gnu --program-prefix= --prefix=/usr --exec-prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin --sysconfdir=/etc --datadir=/usr/share --includedir=/usr/include --libdir=/usr/lib64 --libexecdir=/usr/libexec --localstatedir=/var --sharedstatedir=/var/lib --mandir=/usr/share/man --infodir=/usr/share/info --cache-file=../config.cache --with-libdir=lib64 --with-config-file-path=/etc --with-config-file-scan-dir=/etc/php.d --disable-debug --with-pic --disable-rpath --without-pear --with-bz2 --with-exec-dir=/usr/bin --with-freetype-dir=/usr --with-png-dir=/usr --with-xpm-dir=/usr --enable-gd-native-ttf --with-t1lib=/usr --without-gdbm --with-gettext --with-gmp --with-iconv --with-jpeg-dir=/usr --with-openssl --with-pcre-regex --with-zlib --with-layout=GNU --enable-exif --enable-ftp --enable-magic-quotes --enable-sockets --enable-sysvsem --enable-sysvshm --enable-sysvmsg --with-kerberos --enable-ucd-snmp-hack --enable-shmop --enable-calendar --without-mime-magic --without-sqlite --with-libxml-dir=/usr --with-xml --with-system-tzdata --enable-force-cgi-redirect --enable-pcntl --with-imap=shared --with-imap-ssl --enable-mbstring=shared --enable-mbregex --with-gd=shared --enable-bcmath=shared --enable-dba=shared --with-db4=/usr --with-xmlrpc=shared --with-ldap=shared --with-ldap-sasl --with-mysql=shared,/usr --with-mysqli=shared,/usr/lib64/mysql/mysql_config --enable-dom=shared --with-pgsql=shared --enable-wddx=shared --with-snmp=shared,/usr --enable-soap=shared --with-xsl=shared,/usr --enable-xmlreader=shared --enable-xmlwriter=shared --with-curl=shared,/usr --enable-fastcgi --enable-pdo=shared --with-pdo-odbc=shared,unixODBC,/usr --with-pdo-mysql=shared,/usr/lib64/mysql/mysql_config --with-pdo-pgsql=shared,/usr --with-pdo-sqlite=shared,/usr --with-pdo-dblib=shared,/usr --enable-json=shared --enable-zip=shared --without-readline --with-libedit --with-pspell=shared --enable-phar=shared --with-mcrypt=shared,/usr --with-tidy=shared,/usr --with-mssql=shared,/usr --enable-sysvmsg=shared --enable-sysvshm=shared --enable-sysvsem=shared --enable-posix=shared --with-unixODBC=shared,/usr --enable-fileinfo=shared --enable-intl=shared --with-icu-dir=/usr --with-enchant=shared,/usr --with-recode=shared,/usr

解決した。 php53u-processをインストールしたところ動作した。

yum install php53u-process
Loaded plugins: etckeeper, fastestmirror, priorities
Loading mirror speeds from cached hostfile
 * epel: ftp.iij.ad.jp
 * ius: mirror.rackspace.com
 * sl: ftp.riken.jp
 * sl-security: ftp.riken.jp
92 packages excluded due to repository priority protections
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package php53u-process.x86_64 0:5.3.9-1.ius.el6 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

================================================================================
 Package               Arch          Version                   Repository  Size
================================================================================
Installing:
 php53u-process        x86_64        5.3.9-1.ius.el6           ius         37 k

Transaction Summary
================================================================================
Install       1 Package(s)

Total download size: 37 k
Installed size: 65 k
Is this ok [y/N]: y
Downloading Packages:
php53u-process-5.3.9-1.ius.el6.x86_64.rpm                |  37 kB     00:00     
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
etckeeper: pre transaction commit
[master 7c19e14] saving uncommitted changes in /etc prior to yum run
 Author: hide 
 1 files changed, 1 insertions(+), 1 deletions(-)
try to push...
Counting objects: 5, done.
Delta compression using up to 2 threads.
Compressing objects: 100% (3/3), done.
Writing objects: 100% (3/3), 331 bytes, done.
Total 3 (delta 2), reused 0 (delta 0)
Unpacking objects: 100% (3/3), done.
To /home/hide/Dropbox/git/etc.git
   8c7bb7e..7c19e14  master -> master
  Installing : php53u-process-5.3.9-1.ius.el6.x86_64                        1/1 
etckeeper: post transaction commit
Counting objects: 11, done.
Delta compression using up to 2 threads.
Compressing objects: 100% (8/8), done.
Writing objects: 100% (8/8), 799 bytes, done.
Total 8 (delta 3), reused 0 (delta 0)
Unpacking objects: 100% (8/8), done.
To /home/hide/Dropbox/git/etc.git
   7c19e14..5199028  master -> master

Installed:
  php53u-process.x86_64 0:5.3.9-1.ius.el6                                       

Complete!