ext/iconv/.libs/iconv.o: In function `php_iconv_stream_filter_ctor’:
/home/king/php-5.2.13/ext/iconv/iconv.c:2491: undefined reference to `libiconv_open’
collect2: ld returned 1 exit status
make: *** [sapi/cli/php] Error 1[root@test php-5.2.13]# vi Makefile
在安裝 PHP 到系统中时要是发生「undefined reference to libiconv_open’」之类的错误信息，那表示在「./configure 」沒抓好一些环境变数值。错误发生点在建立「-o sapi/cli/php」是出错，没給到要 link 的 iconv 函式库参数。 解决方法：编辑Makefile 大约77 行左右的地方: EXTRA_LIBS = ….. -lcrypt 在最后加上 -liconv，例如: EXTRA_LIBS = ….. -lcrypt -liconv 然后重新再次 make 即可。
或者用另一种办法
make ZEND_EXTRA_LIBS=’-liconv’
ln -s /usr/local/lib/libiconv.so.2 /usr/lib64/
注：加上 -liconv，需要确认已安装libiconv
libiconv安装
http://www.gnu.org/software/libiconv/
# tar -zxvf libiconv-1.9.2.tar.gz
# cd libiconv-1.9.2
# ./configure –prefix=/usr/local
# make
# make install
# make clean
再次安装 PHP时又报错
ext/standard/info.o: In function `php_info_print_request_uri’:
/root/php-5.4.16/ext/standard/info.c:97: undefined reference to `sapi_globals’
ext/standard/info.o: In function `php_print_gpcse_array’:
/root/php-5.4.16/ext/standard/info.c:209: undefined reference to `executor_globals’
ext/standard/info.o: In function `php_print_info’:
/root/php-5.4.16/ext/standard/info.c:874: undefined reference to `executor_globals’
/root/php-5.4.16/ext/standard/info.c:877: undefined reference to `executor_globals’
/root/php-5.4.16/ext/standard/info.c:880: undefined reference to `executor_globals’
/root/php-5.4.16/ext/standard/info.c:883: undefined reference to `executor_globals’
collect2: ld returned 1 exit status
make: *** [sapi/cli/php] 错误 1
出现这样的错误信息可能是以前用不同的参数编译过PHP。
解决方法：执行make clean删除上次的编译结果，然后再重新编译就OK了。
make ZEND_EXTRA_LIBS=’-liconv’ /libxmlrpc/encoding.c:101:undefined reference to 'libiconv_close'
collect2: ld returned 1 exit status
make:*** [sapi/fpm/php-fpm] Error 1
解决方法：
#make ZEND_EXTRA_LIBS='-liconv'
错误一、编译php出错
/php-5.3.2/ext/fileinfo/libmagic/apprentice.c:147:internal compiler error:Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See for instructions.
The bug is not reproducible,so it is likely a hardware or OS problem.
make:*** [ext/fileinfo/libmagic/apprentice.lo] Error 1
解决方法：内存大于1G即可，这是php5.3.2的一个bug
--------------------------------------------------------------------
错误二、重新构造configure文件出错
./buildconf --force
Forcing buildconf
buildconf:checking installation…
buildconf:autoconf version 2.59 (ok)
buildconf:Your version of autoconf likely contains buggy cache code.
Running vcsclean for you.
To avoid this,install autoconf-2.13.
Can't figure out your VCS, not cleaning.
解决方法：编译安装autoconf-2.13
再将autoconf-2.13的auotconf文件至/usr/local/autoconf
--------------------------------------------------------------------
错误三、编译时缺少库
configure: error: libXpm.(a|so) not found.
解决方法：yum install libXpm-devel
--------------------------------------------------------------------
错误四、编译时缺少gmp.h文件
configure: error: Unable to locate gmp.h
解决方法：yum install gmp-devel
--------------------------------------------------------------------
错误五
Configure: error: xml2-config not found. Please check your libxml2 installation.
解决方法：
#yum install libxml2 libxml2-devel (For Redhat & Fedora)
# aptitude install libxml2-dev (For ubuntu)
--------------------------------------------------------------------
错误六
Checking for pkg-config… /usr/bin/pkg-config
configure: error: Cannot find OpenSSL’s
解决方法：
#yum install openssl openssl-devel
--------------------------------------------------------------------
错误七
Configure: error: Please reinstall the BZip2 distribution
解决方法：
# yum install bzip2 bzip2-devel
--------------------------------------------------------------------
错误八
Configure: error: Please reinstall the libcurl distribution -
easy.h should be in /include/curl/
解决方法：
# yum install curl curl-devel (For Redhat & Fedora)
# install libcurl4-gnutls-dev (For Ubuntu)
--------------------------------------------------------------------
错误九：
Configure: error: libjpeg.(also) not found.
解决方法：
# yum install libjpeg libjpeg-devel
--------------------------------------------------------------------
错误十
Configure: error: libpng.(also) not found.
--------------------------------------------------------------------
解决方法：
# yum install libpng libpng-devel
--------------------------------------------------------------------
错误十一
Configure: error: freetype.h not found.
解决方法：
#yum install freetype-devel
--------------------------------------------------------------------
错误十二
Configure: error: Unable to locate gmp.h
解决方法：
# yum install gmp-devel
--------------------------------------------------------------------
错误十三
Configure: error: Cannot find MySQL header files under /usr.
Note that the MySQL client library is not bundled anymore!
解决方法：
# yum install mysql-devel (For Redhat & Fedora)
# apt-get install libmysql++-dev (For Ubuntu)
--------------------------------------------------------------------
错误十四
Configure: error: Please reinstall the ncurses distribution
解决方法：
# yum install ncurses ncurses-devel
--------------------------------------------------------------------
错误十五
Checking for unixODBC support… configure: error: ODBC header file ‘/usr/include/sqlext.h’ not found!
解决方法：
# yum install unixODBC-devel
--------------------------------------------------------------------
错误十六
Configure: error: Cannot find pspell
解决方法：
# yum install pspell-devel
--------------------------------------------------------------------
错误十七
configure: error: mcrypt.h not found. Please reinstall libmcrypt.
解决方法：
# yum install libmcrypt libmcrypt-devel (For Redhat & Fedora)
# apt-get install libmcrypt-dev
--------------------------------------------------------------------
错误十八
Configure: error: snmp.h not found. Check your SNMP installation.
解决方法：
# yum install net-snmp net-snmp-devel
--------------------------------------------------------------------
错误十九
configure:error:Cannot find ldap.h
解决方法：
#yum install openldap-devel openldap
错误二十
configure:error:xslt-config not found. Please reinstall the libxslt >= 1.1.0 distribution
解决方法：
#yum install libxslt libxslt-devel
错误二十一
checking for libevent >=1.4.11 install prefix… configure: error: Could not find libevent >=1.4.11 in /usr/local/php
解决方法：
安装libevent-1.4.11以上版本至/usr/local
tar xzvf libevent-1.4.14-stable.tar.gz
cd libevent-1.4.14-stable
./configure --prefix=/usr/local
make&&make install
在编译。/configure时添加--with-libevent-dir=/usr/local即可
错误二十二
cc1: out of memory allocating 2036 bytes after a total of 81846272 bytes
make: *** [ext/date/lib/parse_date.lo] Error 1
报错：
/usr/bin/ld: cannot find -lltdl
collect2: ld returned 1 exit status
make:*** [sapi/fpm/php-fpm] Error 1
解决方法：
安装ltdl
#cd /libmcrypt-2.5.7/libltdl/
#./configure --enable-ltdl-install
#ldconfig
#cd php-5.3.6
#make ZEND_EXTRA_LIBS='-liconv'
