/usr/bin/ld: cannot find -lmysqlclient

环境
centos5.7 x86_64 系统上安装postfix !

 

错误

"/usr/bin/ld: cannot find -lmysqlclient"

类似/usr/bin/ld: cannot find -xxxx的错误有很多,

最简单的判断一下:是否安装相应的mysql-devel包

发现mysql-devel 包已经安装了

# rpm -qa | grep mysql
mysql-devel-5.0.77-4.el5_6.6
mysql-server-5.0.77-4.el5_6.6
mysql-devel-5.0.77-4.el5_6.6
mysql-5.0.77-4.el5_6.6
php-mysql-5.1.6-27.el5_5.3
mysql-5.0.77-4.el5_6.6

 

 

仔细再次查看错误信息，发现都是 /usr/lib/mysql/

[postfix-2.6.13]$ make makefiles 'CCARGS=-DHAS_MYSQL -I/usr/include/mysql -DUSE_SASL_AUTH -DUSE_CYRUS_SASL -I/usr/include/sasl  -DUSE_TLS ' 'AUXLIBS=-L/usr/lib/mysql -lmysqlclient -lz -lm -L/usr/lib/sasl2 -lsasl2   -lssl -lcrypto'

/usr/bin/ld: skipping incompatible /usr/lib/mysql/libmysqlclient.a when searching for -lmysqlclient
/usr/bin/ld: cannot find -lmysqlclient
collect2: ld returned 1 exit status
make: *** [master] Error 1
make: *** [update] Error 1

[postfix-2.6.13]$ cat conf/makedefs.out
# Do not edit -- this file documents how Postfix was built for your machine.
SYSTYPE = LINUX2
AR  = ar
ARFL    = rv
RANLIB  = ranlib
SYSLIBS = -L/usr/lib/mysql -lmysqlclient -lz -lm -L/usr/lib/sasl2 -lsasl2  -lssl -lcrypto -ldb -lnsl -lresolv
CC  = gcc $(WARN) -DHAS_MYSQL -I/usr/include/mysql -DUSE_SASL_AUTH -DUSE_CYRUS_SASL -I/usr/include/sasl -DUSE_TLS
OPT = -O
DEBUG   = -g
AWK = awk
STRCASE =
EXPORT  = AUXLIBS='-L/usr/lib/mysql -lmysqlclient -lz -lm -L/usr/lib/sasl2 -lsasl2  -lssl -lcrypto' CCARGS='-DHAS_MYSQL -I/usr/include/mysql -DUSE_SASL_AUTH -DUSE_CYRUS_SASL -I/usr/include/sasl -DUSE_TLS ' OPT='-O' DEBUG='-g'
WARN    = -Wall -Wno-comment -Wformat -Wimplicit -Wmissing-prototypes \
    -Wparentheses -Wstrict-prototypes -Wswitch -Wuninitialized \
    -Wunused -Wno-missing-braces

 

解决方法,指定为/usr/lib64/mysql

[postfix-2.6.13]$ make clea

[postfix-2.6.13]$ make makefiles 'CCARGS=-DHAS_MYSQL -I/usr/include/mysql -DUSE_SASL_AUTH -DUSE_CYRUS_SASL -I/usr/include/sasl  -DUSE_TLS ' 'AUXLIBS=-L/usr/lib64/mysql -lmysqlclient -lz -lm -L/usr/lib/sasl2 -lsasl2   -lssl -lcrypto'

[postfix-2.6.13]$ cat conf/makedefs.out
# Do not edit -- this file documents how Postfix was built for your machine.
SYSTYPE = LINUX2
AR  = ar
ARFL    = rv
RANLIB  = ranlib
SYSLIBS = -L/usr/lib64/mysql -lmysqlclient -lz -lm -L/usr/lib/sasl2 -lsasl2  -lssl -lcrypto -ldb -lnsl -lresolv
CC  = gcc $(WARN) -DHAS_MYSQL -I/usr/include/mysql -DUSE_SASL_AUTH -DUSE_CYRUS_SASL -I/usr/include/sasl -DUSE_TLS
OPT = -O
DEBUG   = -g
AWK = awk
STRCASE =
EXPORT  = AUXLIBS='-L/usr/lib64/mysql -lmysqlclient -lz -lm -L/usr/lib/sasl2 -lsasl2  -lssl -lcrypto' CCARGS='-DHAS_MYSQL -I/usr/include/mysql -DUSE_SASL_AUTH -DUSE_CYRUS_SASL -I/usr/include/sasl -DUSE_TLS ' OPT='-O' DEBUG='-g'
WARN    = -Wall -Wno-comment -Wformat -Wimplicit -Wmissing-prototypes \
    -Wparentheses -Wstrict-prototypes -Wswitch -Wuninitialized \
    -Wunused -Wno-missing-braces

make && make isntall

 

结束

仔细再次查看错误信息阿！