今天在编译varnish的时候遇到下列错误:

checking for library containing pthread_create... -lpthread
checking for socket in -lsocket... no
checking for getaddrinfo in -lnsl... yes
checking for cos in -lm... yes
checking for pkg-config... /usr/bin/pkg-config
checking pkg-config is at least version 0.9.0... yes
checking for PCRE... no
configure: error: Package requirements (libpcre) were not met:

No package 'libpcre' found

Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.

Alternatively, you may set the environment variables PCRE_CFLAGS
and PCRE_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.

说是缺少libpcre包，但是系统明明有，后来google了一下，终于找到了答案：

export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig

执行后你在编译就没问题了