SYSTEM： php 5.6.4 centos 7.1.503（核心）
编译php时出现以下错误：
configure: error: Don't know how to define struct flock on this system, set --enable-opcache=no
我通过以下编译args得到了它：
sudo ./configure --with-apxs2 --disable-cgi --enable-sockets --enable-pcntl --with-readline --with-zlib --with-openssl --with-curl --enable-mbstring --with-gettext --enable-soap --enable-wddx --with-tidy --with-jpeg-dir --with-png-dir --with-gd --enable-gd-native-ttf --with-freetype-dir --with-libxml-dir --with-xmlrpc --with-pdo-mysql=mysqlnd --with-mysql=mysqlnd --with-mysqli=mysqlnd --with-config-file-path=/etc/httpd/conf --with-mcrypt --enable-opcache --with-ldap --prefix=/usr/local/php-5.6.4
我不认为它的opcache有关，好像我删除了--with-ldap标志它编译得很好。另外5.5已经编译并运行w / ldap就好了。这个升级到5.6然后窒息而不是那个标志设置。
同样在config.log中，这似乎可能是相关的：
configure:66022: result: no
configure:66025: checking for mmap() using regular file shared memory support
configure:66097: cc -o conftest -I/usr/include -g -O2 -fvisibility=hidden -L/usr/lib conftest.c -lmcrypt -lltdl -lldap -lpng -lz -ljpeg -lcurl -lz -lrt -lm -ldl -lnsl -lxml2 -lz -lm -ldl -lssl -lcrypto -lcurl -lxml2 -lz -lm -ldl -lfreetype >&5
configure:66097: $? = 0
configure:66097: ./conftest
./configure: line 2331: 29392 Aborted (core dumped) ./conftest$ac_exeext
configure:66097: $? = 134
configure: program exited with status 134
configure: failed program was:
| /* confdefs.h */