CRF++的官方地址：https://taku910.github.io/crfpp/
- 找到下载，目前都是存在google云盘上面的。
下载最新版本，现在是0.58 - 下载源码包，CRF++-0.58.tar.gz
- 放到linux服务器上面
运行命令
./configure
输出结果
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /usr/bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables...
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking for style of include used by make... GNU
checking dependency style of gcc... gcc3
checking for g++... g++
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking dependency style of g++... gcc3
checking how to run the C preprocessor... gcc -E
checking for grep that handles long lines and -e... /usr/bin/grep
checking for egrep... /usr/bin/grep -E
checking whether gcc needs -traditional... no
checking whether make sets $(MAKE)... (cached) yes
checking for library containing strerror... none required
checking build system type... x86_64-unknown-linux-gnu
checking host system type... x86_64-unknown-linux-gnu
checking how to print strings... printf
checking for a sed that does not truncate output... /usr/bin/sed
checking for fgrep... /usr/bin/grep -F
checking for ld used by gcc... /usr/bin/ld
checking if the linker (/usr/bin/ld) is GNU ld... yes
checking for BSD- or MS-compatible name lister (nm)... /usr/bin/nm -B
checking the name lister (/usr/bin/nm -B) interface... BSD nm
checking whether ln -s works... yes
checking the maximum length of command line arguments... 1572864
checking whether the shell understands some XSI constructs... yes
checking whether the shell understands "+="... yes
checking how to convert x86_64-unknown-linux-gnu file names to x86_64-unknown-linux-gnu format... func_convert_file_noop
checking how to convert x86_64-unknown-linux-gnu file names to toolchain format... func_convert_file_noop
checking for /usr/bin/ld option to reload object files... -r
checking for objdump... objdump
checking how to recognize dependent libraries... pass_all
checking for dlltool... no
checking how to associate runtime and link libraries... printf %s\n
checking for ar... ar
checking for archiver @FILE support... @
checking for strip... strip
checking for ranlib... ranlib
checking command to parse /usr/bin/nm -B output from gcc object... ok
checking for sysroot... no
checking for mt... no
checking if : is a manifest tool... no
checking for ANSI C header files... no
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking for dlfcn.h... yes
checking for objdir... .libs
checking if gcc supports -fno-rtti -fno-exceptions... no
checking for gcc option to produce PIC... -fPIC -DPIC
checking if gcc PIC flag -fPIC -DPIC works... yes
checking if gcc static flag -static works... no
checking if gcc supports -c -o file.o... yes
checking if gcc supports -c -o file.o... (cached) yes
checking whether the gcc linker (/usr/bin/ld -m elf_x86_64) supports shared libraries... yes
checking whether -lc should be explicitly linked in... no
checking dynamic linker characteristics... GNU/Linux ld.so
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... yes
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... yes
checking whether to build static libraries... yes
checking how to run the C++ preprocessor... g++ -E
checking for ld used by g++... /usr/bin/ld -m elf_x86_64
checking if the linker (/usr/bin/ld -m elf_x86_64) is GNU ld... yes
checking whether the g++ linker (/usr/bin/ld -m elf_x86_64) supports shared libraries... yes
checking for g++ option to produce PIC... -fPIC -DPIC
checking if g++ PIC flag -fPIC -DPIC works... yes
checking if g++ static flag -static works... no
checking if g++ supports -c -o file.o... yes
checking if g++ supports -c -o file.o... (cached) yes
checking whether the g++ linker (/usr/bin/ld -m elf_x86_64) supports shared libraries... yes
checking dynamic linker characteristics... (cached) GNU/Linux ld.so
checking how to hardcode library paths into programs... immediate
checking for ANSI C header files... (cached) no
checking for string.h... (cached) yes
checking for stdlib.h... (cached) yes
checking for unistd.h... (cached) yes
checking fcntl.h usability... yes
checking fcntl.h presence... yes
checking for fcntl.h... yes
checking for sys/stat.h... (cached) yes
checking sys/mman.h usability... yes
checking sys/mman.h presence... yes
checking for sys/mman.h... yes
checking sys/times.h usability... yes
checking sys/times.h presence... yes
checking for sys/times.h... yes
checking ctype.h usability... yes
checking ctype.h presence... yes
checking for ctype.h... yes
checking for sys/types.h... (cached) yes
checking math.h usability... yes
checking math.h presence... yes
checking for math.h... yes
checking pthread.h usability... yes
checking pthread.h presence... yes
checking for pthread.h... yes
checking for size_t... yes
checking for pow in -lm... yes
checking for exp in -lm... yes
checking for log in -lm... yes
checking for pthread_create in -lpthread... yes
checking for pthread_join in -lpthread... yes
checking for stdlib.h... (cached) yes
checking for unistd.h... (cached) yes
checking for sys/param.h... yes
checking for getpagesize... yes
checking for working mmap... yes
checking whether make is GNU Make... yes
checking if g++ supports stl <string> (required)... yes
checking if g++ supports stl <vector> (required)... yes
checking if g++ supports stl <map> (required)... yes
checking if g++ supports stl <set> (required)... yes
checking if g++ supports stl <iostream> (required)... yes
checking if g++ supports stl <fstream> (required)... yes
checking if g++ supports stl <sstream> (required)... yes
checking if g++ supports stl <stdexcept> (required)... yes
checking if g++ supports template <class T> (required)... yes
checking if g++ supports const_cast<> (required)... yes
checking if g++ supports static_cast<> (required)... yes
checking if g++ supports dynamic_cast<> (required)... yes
checking if g++ supports exception handler (required)... yes
checking if g++ supports namespaces (required) ... yes
checking if g++ supports __thread (optional)... yes
checking if g++ supports _SC_NPROCESSORS_CONF (optional)... yes
checking if g++ environment provides all required features... yes
configure: creating ./config.status
config.status: creating Makefile
config.status: creating Makefile.msvc
config.status: creating swig/version.h
config.status: creating config.h
config.status: executing depfiles commands
config.status: executing libtool commands
看到一连串的yes真的很舒服。
之后编译
make
sudo make install
安装python依赖, 进入子目录python中，cd python
python setup.py build
python setup.py install
此时，调用crf_train或者在python中import，极大可能会遇到问题
libcrfpp.so.0: cannot open shared object file: No such file or directory
进入python来试一下
python
Python 3.7.2 (default, Dec 29 2018, 06:19:36)
[GCC 7.3.0] :: Anaconda, Inc. on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import CRFPP
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/xxx/.conda/envs/python37/lib/python3.7/site-packages/CRFPP.py", line 26, in <module>
_CRFPP = swig_import_helper()
File "/home/xxx/.conda/envs/python37/lib/python3.7/site-packages/CRFPP.py", line 22, in swig_import_helper
_mod = imp.load_module('_CRFPP', fp, pathname, description)
File "/home/xxx/.conda/envs/python37/lib/python3.7/imp.py", line 242, in load_module
return load_dynamic(name, filename, file)
File "/home/xxx/.conda/envs/python37/lib/python3.7/imp.py", line 342, in load_dynamic
return _load(spec)
ImportError: libcrfpp.so.0: cannot open shared object file: No such file or directory
真是让人头痛啊。
这里做了很多尝试
安装libgcc
conda install libgcc
首先找到这个文件
sudo find ./ | grep libcrfpp.so.0
然后copy进入需要的目录
cp ./.libs/libcrfpp.so.0 /usr/local/lib/
建立软链
ln -s /usr/local/lib/libcrfpp.so.0 /usr/lib/
清除缓存
sudo rm -f /etc/ld.so.cache
共享动态链接库
sudo ldconfig
成功了
python
Python 3.7.2 (default, Dec 29 2018, 06:19:36)
[GCC 7.3.0] :: Anaconda, Inc. on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import CRFPP
>>>
