Subversion1.8之后，http资源类型支持库，apache从该版本之后，舍弃了neon。Subversion 1.8中http客户端基于neon已经被移除，改用self。如果要支持http方式需要在安装svn前安装serf，安装serf推荐用serf-1.2.1，安装是./configure；由于google官网下载比较麻烦，所有我这里分享给大家。好运！
源码安装svn serf_v1.2.1：
Linux下编译Serf_v1.2.1源码时，提示以下错误，有知道解决方法的朋友吗，麻烦共享下，谢谢！
/svn_setup/lib/libssl.a(s23_clnt.o): relocation R_X86_64_32 against `.rodata' can not be used when making a shared object; recompile with -fPIC
/svn_setup/lib/libssl.a: could not read symbols: Bad value
collect2: ld returned 1 exit status
make: *** [libserf-1.la] Error 1
解决方案：出现此错误是在ubuntu环境中源码编译Svn时，安装serf_1.2.1出现的，
重新编译openssl时，添加上 -fPIC,--enable-share参数即可解决上述错误
serf-1.3.0安装是用scons（yum -y install scons）方式，安装serf-1.3.0后安装可能会报误，Google没找到解决方法，如下报错
checking for serf-2 library... no checking for serf-1 library... no checking was serf enabled... no An appropriate version of serf could not be found, so libsvn_ra_serf will not be built. If you want to build libsvn_ra_serf, please install serf 1.2.1 or newer. configure: error: Serf was explicitly enabled but an appropriate version was not found.
