解决caffe编译时//usr/lib/x86_64-linux-gnu/libSM.so.6: undefined reference to `uuid_unparse_lower@UUID_1.0

我在编译安装RefineDet的caffe版遇到//usr/lib/x86_64-linux-gnu/libSM.so.6: undefined reference to `uuid_unparse_lower@UUID_1.0'

我的编译环境时anaconda2，python2.7，ubuntu16.04

RefineDet$ make -j8

输出：

CXX/LD -o .build_release/tools/convert_annoset.bin
CXX/LD -o .build_release/tools/caffe.bin
CXX/LD -o .build_release/tools/upgrade_solver_proto_text.bin
CXX/LD -o .build_release/tools/compute_image_mean.bin
CXX/LD -o .build_release/tools/convert_imageset.bin
CXX/LD -o .build_release/tools/create_label_map.bin
CXX/LD -o .build_release/tools/upgrade_net_proto_binary.bin
CXX/LD -o .build_release/tools/get_image_size.bin
//usr/lib/x86_64-linux-gnu/libSM.so.6: undefined reference to `uuid_generate@UUID_1.0'
//usr/lib/x86_64-linux-gnu/libSM.so.6: undefined reference to `uuid_unparse_lower@UUID_1.0'
collect2: error: ld returned 1 exit status
Makefile:619: recipe for target '.build_release/tools/upgrade_solver_proto_text.bin' failed
make: *** [.build_release/tools/upgrade_solver_proto_text.bin] Error 1
make: *** Waiting for unfinished jobs....
//usr/lib/x86_64-linux-gnu/libSM.so.6: undefined reference to `uuid_generate@UUID_1.0'
//usr/lib/x86_64-linux-gnu/libSM.so.6: undefined reference to `uuid_unparse_lower@UUID_1.0'
collect2: error: ld returned 1 exit status
Makefile:619: recipe for target '.build_release/tools/convert_imageset.bin' failed
make: *** [.build_release/tools/convert_imageset.bin] Error 1
//usr/lib/x86_64-linux-gnu/libSM.so.6: undefined reference to `uuid_generate@UUID_1.0'
//usr/lib/x86_64-linux-gnu/libSM.so.6: undefined reference to `uuid_unparse_lower@UUID_1.0'
collect2: error: ld returned 1 exit status
Makefile:619: recipe for target '.build_release/tools/create_label_map.bin' failed
make: *** [.build_release/tools/create_label_map.bin] Error 1
//usr/lib/x86_64-linux-gnu/libSM.so.6: undefined reference to `uuid_generate@UUID_1.0'
//usr/lib/x86_64-linux-gnu/libSM.so.6: undefined reference to `uuid_unparse_lower@UUID_1.0'
collect2: error: ld returned 1 exit status
Makefile:619: recipe for target '.build_release/tools/convert_annoset.bin' failed
make: *** [.build_release/tools/convert_annoset.bin] Error 1
//usr/lib/x86_64-linux-gnu/libSM.so.6: undefined reference to `uuid_generate@UUID_1.0'
//usr/lib/x86_64-linux-gnu/libSM.so.6: undefined reference to `uuid_unparse_lower@UUID_1.0'
collect2: error: ld returned 1 exit status
Makefile:619: recipe for target '.build_release/tools/compute_image_mean.bin' failed
make: *** [.build_release/tools/compute_image_mean.bin] Error 1
//usr/lib/x86_64-linux-gnu/libSM.so.6: undefined reference to `uuid_generate@UUID_1.0'
//usr/lib/x86_64-linux-gnu/libSM.so.6: undefined reference to `uuid_unparse_lower@UUID_1.0'
collect2: error: ld returned 1 exit status
Makefile:619: recipe for target '.build_release/tools/get_image_size.bin' failed
make: *** [.build_release/tools/get_image_size.bin] Error 1
//usr/lib/x86_64-linux-gnu/libSM.so.6: undefined reference to `uuid_generate@UUID_1.0'
//usr/lib/x86_64-linux-gnu/libSM.so.6: undefined reference to `uuid_unparse_lower@UUID_1.0'
collect2: error: ld returned 1 exit status
Makefile:619: recipe for target '.build_release/tools/upgrade_net_proto_binary.bin' failed
make: *** [.build_release/tools/upgrade_net_proto_binary.bin] Error 1
//usr/lib/x86_64-linux-gnu/libSM.so.6: undefined reference to `uuid_generate@UUID_1.0'
//usr/lib/x86_64-linux-gnu/libSM.so.6: undefined reference to `uuid_unparse_lower@UUID_1.0'

解决办法：缺少libSM.so库文件，因此安装即可，可以直接看最后终极大法

1，查询limSM库安装包名字

apt-cache search libSM

先查看有什么库，第一个好像可以直接使用

(base) jason:~$ apt-cache search libSM
libsm-dev - X11 Session Management library (development headers)
libsm-doc - documentation for the X Session Management protocol and library
libsm6 - X11 Session Management library
libsm6-dbg - X11 Session Management library (debug package)
libsmartcols-dev - smart column output alignment library - headers and static libraries
libsmartcols1 - smart column output alignment library
libsmbclient - shared library for communication with SMB/CIFS servers
libsmbclient-dev - development files for libsmbclient
libsmi2-dbg - library to access SMI MIB information - debugging symbols
libsmi2-dev - library to access SMI MIB information - development files
libsmi2ldbl - library to access SMI MIB information
smitools - various tools operating on MIB module files
libfilesys-smbclient-perl - perl interface to access Samba filesystem
libsmart-comments-perl - Perl module for comments that do more than just sit there
libsmartcardpp-dev - smartcardpp development files
libsmartcardpp1 - C++ library for accessing Smart Cards
libsmartcardpp1-dbg - smartcardpp debugging symbols
libsmbios-dev - Provide access to (SM)BIOS information -

2，安装该库（需要root权限)

sudo apt-get insatll libsm-dev

3，查看libSM.so安装位置

ldconfig -p|grep libSM

输出

(base) jason:~$ ldconfig -p|grep libSM
	libSM.so.6 (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libSM.so.6
	libSM.so (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libSM.so

所以/usr/lib/x86_64-linux-gnu应该要放在LD_LIBRARY_PATH环境变量里面，但是在我这没有解决问题，

（可选）大家可以尝试下面的方法看能否解决你的问题：

vim ~/.bashrc

在文件中写入

export LD_LIBRARY_PATH=/usr/lib/x86_64-linux-gnu/:$LD_LIBRARY_PATH

然后让其生效

source ~/.bashrc

4，上面方法没有生效，我想是不是我的库链接有问题

ldd /usr/lib/x86_64-linux-gnu/libSM.so

报libuuid链接库有问题，因此需要安装uuid,

5，安装uuid

1）搜索库文件名字

apt-cache search uuid

输出

(base) jason@jason:~$ apt-cache search uuid
golang-github-pborman-uuid-dev - Go bindings to work with UUIDs
golang-uuid-dev - Transitional package for golang-github-pborman-uuid-dev
jasper - Configure a preinstalled ext2/3 system image
libblkid-dev - block device ID library - headers and static libraries
libblkid1 - block device ID library
libuuid-perl - Perl extension for using UUID interfaces as defined in e2fsprogs
libuuid1 - Universally Unique ID library
postgresql-contrib-9.5 - additional facilities for PostgreSQL
uuid-dev - Universally Unique ID library - headers and static libraries

uuid-dev这个库有头文件和静态库，所以安装uuid-dev

2）安装库文件

sudo apt-get install uuid-dev

3）查看库文件所在路径

ldconfig -p|grep uuid 

输出

(base) jason@jason:~$ ldconfig -p|grep uuid
    libuuid.so.1 (libc6,x86-64) => /lib/x86_64-linux-gnu/libuuid.so.1
    libuuid.so (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libuuid.so

编译还是报错，查看是不是uuid安装不对导致的

ldd /usr/lib/x86_64-linux-gnu/libSM.so

输出：

(base) jason@jason:~$ ldd /usr/lib/x86_64-linux-gnu/libSM.so
	linux-vdso.so.1 =>  (0x00007fffcf9cd000)
	libICE.so.6 => /usr/lib/x86_64-linux-gnu/libICE.so.6 (0x00007f54c2c89000)
	libuuid.so.1 => /lib/x86_64-linux-gnu/libuuid.so.1 (0x00007f54c2a84000)
	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f54c26ba000)
	/lib64/ld-linux-x86-64.so.2 (0x00007f54c30ab000)

看来现在正常了，但问题并没有解决，还是报//usr/lib/x86_64-linux-gnu/libSM.so.6: undefined reference to `uuid_unparse_lower@UUID_1.0'，要崩溃了，太难解决了，后来想直接搜索undefined reference，看看这个是什么问题

果然这是一个c++编译常见错误

可以参考一下这些文章undefined reference to错误的解决方法

其中这句话感觉很重要，

另外注意一个问题,就是只要查找到第一个就会返回,后面的不会再查找. 
比如-L./A -L./B -lx 在A中有libx.a B中有libx.a和libx.so,
这个时候会使用在./A的libx.a 而不会遵循动态库优先的原则,
因为./A是先找到的,并且没有同名动态库存在

【注】链接时顺序不对会报这个错，按道理caffe自己写的脚本编译顺序应该不会有问题，于是我想到是不是使用anaconda2环境时会先搜索anaconda2/lib里面的库文件导致的，当搜到了就不在使用刚才新装的uuid库文件了，去这个文件下面查看果真有这个libuuid

 

由于我的~/.bashrc里面把anaconda2//lib加入了LD_LIBRARY_PATH里面，这里面有libuuid.so库文件，搜索时先搜索了这里面的库文件，但该库文件好像有问题，因此移除即可

[注]在第三步可选里面我把/usr/lib/x86_64-linux-gnu加入动态链接库LD_LIBRARY_PATH，后来发现把这个路径删掉好像也可以

6，终极大法出现：把anaconda2/lib下的libuuid库文件移走就好了，至此终于解决了这个问题

ls ~/anaconda2/lib/libuuid*

mkdir ~/anaconda2/libuuid

mv ~/anaconda2/lib/libuuid* ~/anaconda2/libuuid

 

 

总结：使用anaconda2一定要注意可能里面的一些库文件并不一定对，下次一定要记得想到这个问题