zhparser.h:8:18: fatal error: scws.h: No such file or directory

编译 PostgreSQL 的插件 zhparser 时报错：

gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -fexcess-precision=standard -O2 -fPIC -I/usr/local/include/scws  -I. -I. -I../../src/include -D_GNU_SOURCE -I/usr/include/libxml2   -c -o zhparser.o zhparser.c
In file included from zhparser.c:8:0:
zhparser.h:8:18: fatal error: scws.h: No such file or directory
 #include "scws.h"
                  ^

其实在该目录下的 README.md 已经提供了解决办法，系统没有 wget 命令，改用 curl：

curl -O http://www.xunsearch.com/scws/down/scws-1.2.3.tar.bz2
tar -xf scws-1.2.3.tar.bz2
cd scws-1.2.3
./configure
make
make install