1. ./configure --prefix=/opt
報錯：
configure: error:
Cannot find pcre-config script from PCRE (Perl Compatible Regular Expressions)
library package. This dependency is needed for configure to complete,Either:
- Install the PCRE developer package on your system (preferred approach).
- Download the PCRE source tarball, build and install on your system
as you would for any package built from source distribution.
- Use the Tools/pcre-build.sh script to build PCRE just for SWIG to statically
link against. Run 'Tools/pcre-build.sh --help' for instructions.
(quite easy and does not require privileges to install PCRE on your system)
- Use configure --without-pcre to disable regular expressions support in SWIG
(not recommended).
See `config.log' for more details
需要安裝pcre的開發包：
yum search pcre
yum install pcre-devel.x86_64（根據搜索結果自己選）