/usr/bin/ld: cannot find -lmysqlclien

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

1. # rpm -qa | grep mysql
2. mysql-devel-5.0.77-4.el5_6.6
3. mysql-server-5.0.77-4.el5_6.6
4. mysql-devel-5.0.77-4.el5_6.6
5. mysql-5.0.77-4.el5_6.6
6. php-mysql-5.1.6-27.el5_5.3
7. 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/

1. [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'
3. /usr/bin/ld: skipping incompatible /usr/lib/mysql/libmysqlclient.a when searching for -lmysqlclient
4. /usr/bin/ld: cannot find -lmysqlclient
5. collect2: ld returned 1 exit status
6. make: *** [master] Error 1
7. make: *** [update] Error 1
9. [postfix-2.6.13]$ cat conf/makedefs.out
10. # Do not edit -- this file documents how Postfix was built for your machine.
11. SYSTYPE = LINUX2
12. AR = ar
13. ARFL = rv
14. RANLIB = ranlib
15. SYSLIBS = -L/usr/lib/mysql -lmysqlclient -lz -lm -L/usr/lib/sasl2 -lsasl2  -lssl -lcrypto -ldb -lnsl -lresolv
16. CC = gcc $(WARN) -DHAS_MYSQL -I/usr/include/mysql -DUSE_SASL_AUTH -DUSE_CYRUS_SASL -I/usr/include/sasl -DUSE_TLS
17. OPT = -O
18. DEBUG = -g
19. AWK = awk
20. STRCASE =
21. 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'
22. WARN = -Wall -Wno-comment -Wformat -Wimplicit -Wmissing-prototypes \
23. -Wparentheses -Wstrict-prototypes -Wswitch -Wuninitialized \
24. -Wunused -Wno-missing-braces

解决方法,指定 为/usr/lib64/mysql

1. [postfix-2.6.13]$ make clea
3. [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'
5. [postfix-2.6.13]$ cat conf/makedefs.out
6. # Do not edit -- this file documents how Postfix was built for your machine.
7. SYSTYPE = LINUX2
8. AR = ar
9. ARFL = rv
10. RANLIB = ranlib
11. SYSLIBS = -L/usr/lib64/mysql -lmysqlclient -lz -lm -L/usr/lib/sasl2 -lsasl2  -lssl -lcrypto -ldb -lnsl -lresolv
12. CC = gcc $(WARN) -DHAS_MYSQL -I/usr/include/mysql -DUSE_SASL_AUTH -DUSE_CYRUS_SASL -I/usr/include/sasl -DUSE_TLS
13. OPT = -O
14. DEBUG = -g
15. AWK = awk
16. STRCASE =
17. 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'
18. WARN = -Wall -Wno-comment -Wformat -Wimplicit -Wmissing-prototypes \
19. -Wparentheses -Wstrict-prototypes -Wswitch -Wuninitialized \
20. -Wunused -Wno-missing-braces
22. make && make isntall