PHP编译时有许多依赖，如果当前系统没有安装就会报错，本文收集了一些常见的报错，以及解决方案供大家参考。

configure: error: xml2-config not found. Please check your libxml2 installation.

yum install libxml2-devel -y

configure: error: Cannot find OpenSSL's <evp.h>

yum install openssl-devel -y

checking for PCRE headers location... configure: error: Could not find pcre.h in /usr

yum install pcre-devel -y

configure: error: Please reinstall the BZip2 distribution

yum install bzip2-devel -y

configure: error: Please reinstall the libcurl distribution -
   easy.h should be in <curl-dir>/include/curl/

yum install libcurl-devel -y

configure: error: DBA: Could not find necessary header file(s).

yum install db4-devel -y

configure: error: Cannot find enchant

yum install enchant-devel -y

configure: error: jpeglib.h not found.

yum install libjpeg-devel -y

configure: error: png.h not found.

yum install libpng-devel -y

configure: error: xpm.h not found.

yum install libXpm-devel -y

configure: error: freetype-config not found.

yum install freetype-devel -y

configure: error: Unable to locate gmp.h

yum install gmp-devel -y

configure: error: utf8_mime2text() has new signature, but U8T_CANONICAL is missing. This should not happen. Check config.log for additional information.

yum install libc-client-devel -y

configure: error: Unable to detect ICU prefix or /usr/bin/icu-config failed. Please verify ICU install prefix and make sure icu-config works.

yum install libicu-devel -y

checking how to run the C++ preprocessor... /lib/cpp
configure: error: in `/root/php-5.5.38':
configure: error: C++ preprocessor "/lib/cpp" fails sanity check
See `config.log' for more details

yum install gcc-c++ -y

configure: error: Cannot find ldap.h

yum install openldap-devel -y

checking for specified location of the MySQL UNIX socket... no
configure: error: Cannot find MySQL header files under /usr.
Note that the MySQL client library is not bundled anymore!

yum install mysql-devel

checking for unixODBC support... configure: error: ODBC header file '/usr/include/sqlext.h' not found!

yum install unixODBC-devel -y

checking for pg_config... not found
configure: error: Cannot find libpq-fe.h. Please specify correct PostgreSQL installation path

yum install postgresql-devel

configure: error: Please reinstall the sqlite distribution from http://www.sqlite.org

yum install sqlite-devel

configure: error: Cannot find pspell

yum install aspell-devel

configure: error: Please reinstall libedit - I cannot find readline.h

yum install libedit-devel -y

configure: error: Can not find recode.h anywhere under /usr /usr/local /usr /opt.

yum install recode-devel -y

configure: error: Could not find net-snmp-config binary. Please check your net-snmp installation.

yum install net-snmp-devel

configure: error: Cannot find libtidy

yum install libtidy-devel -y

configure: error: xslt-config not found. Please reinstall the libxslt >= 1.1.0 distribution

yum install libxslt-devel -y