在Linux下编译安装PHP的时候make报错，make: *** [sapi/fpm/php-fpm] Error 1
原因iconv重复安装在不同目录，造成include文件iconv.h等重复 通过 find / -name “iconv.h” 如果查找到2个以上返回结果，说明 iconv重复安装了，卸载多余的版本即可正常编译。
安装iconv是源码编译安装，于是到安装目录cd /usr/local/src/libiconv-1.13.1，执行 make uninstall卸载自己安装的版本。再重新
cd /usr/local/src/php-5.3.8，
./configure --prefix=/usr/local/php --with-config-file-path=/usr/local/php/etc --with-mysql=/usr/local/mysql --with-mysqli=/usr/local/mysql/bin/mysql_config --with-freetype-dir --with-jpeg-dir --with-png-dir --with-zlib --with-libxml-dir=/usr --enable-xml --disable-rpath --enable-discard-path --enable-safe-mode --enable-bcmath --enable-shmop --enable-sysvsem --enable-inline-optimization --with-curl --with-curlwrappers --enable-mbregex --enable-fastcgi --enable-fpm --enable-force-cgi-redirect --enable-mbstring --with-mcrypt --with-gd --enable-gd-native-ttf --with-openssl --with-mhash --enable-pcntl --enable-sockets --with-ldap --with-ldap-sasl --with-xmlrpc --enable-zip --enable-soap
make
make install