在Linux上使用GCC加强链接 [英] Boost linking on Linux with GCC

问题描述

我试图在Ubuntu 11.10下使用从存储库安装的boost 1.42编译C ++程序（我也试着自己构建boost，但结果与repo-boost相同）。源文件编译但连接器给出错误...我尝试了几个小时，但无法找到解决方案，也许有人可以帮助我...

这里是来自Makefile的目标

pre code> CXX = / usr / bin / g ++

LDFLAGS = -L。 \
-Lpath / to / libMy_Lib.a

CFLAGS = -I。 \
-Wall \
-g \
-O0

OBJECTS = obj1.o obj2.o

％。 o：％.cpp
$（CXX）-c $ *。cpp -o $ @ \
-Wno-deprecated \
$（CFLAGS）

全部：程序

程序：$（OBJECTS）
$（CXX）$ ^ \
$（LDFLAGS）\
-o myProg \
-lboost_regex \
-lboost_filesystem \
-lboost_date_time \
-lboost_system \
-lboost_thread \
-lMy_Lib

libMy_Lib.a是一个库，它也使用boost（我没有问题在同一个系统上编译它）。所有的libs在/ usr / lib中都可以正常运行。

这里是输出ld generate（我用make 2>输出） http://ubuntuone.com/6QlU7AUZGgLGIu7sHbvDHm

也许库的顺序不是正确的（我知道boost_filesystem取决于boost_system，但我不知道其余的），或者我忘了指定一些额外的库，我的程序需要链接到...

这些错误信息是令人印象深刻的：

  ../../ DIAG_DECODER // libDecoder_Element.a（BaseElements_Group.o）：在函数`bool boost :: regex_match< __ gnu_cxx :: __ normal_iterator< char const *，std :: basic_string< char，std :: char_traits< char> ;, std :: allocator< char> > >，std :: allocator< boost :: sub_match< __ gnu_cxx :: __ normal_iterator< char const *，std :: basic_string< char，std :: char_traits< char>，std :: allocator< char> > > > >，char，boost :: regex_traits< char，boost :: cpp_regex_traits< char> > >（__ gnu_cxx :: __ normal_iterator< char const *，std :: basic_string< char，std :: char_traits< char> ;, std :: allocator< char>>，__gnu_cxx :: __ normal_iterator< char const *，std： ：basic_string< char，std :: char_traits< char> ;, std :: allocator< char>>，boost :: match_results< __ gnu_cxx :: __ normal_iterator< char const *，std :: basic_string< char，std :: char_traits< ; char>，std :: allocator< char>>> ;, std :: allocator< boost :: sub_match< __ gnu_cxx :: __ normal_iterator< char const *，std :: basic_string< char，std :: char_traits< std :: allocator< char>>>>>& ;, boost :: basic_regex< char，boost :: regex_traits< char，boost :: cpp_regex_traits< char>>> const&; boost： ：regex_constants :: _ match_flags）'：
 BaseElements_Group.cpp :(。text._ZN5boost11regex_matchIN9__gnu_cxx17__normal_iteratorIPKcSsEESaINS_9sub_matchIS5_EEEcNS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEEEbT_SD_RNS_13match_resultsISD _T0_EERKNS_11basic_regexIT1_T2_EENS_15regex_constants12_match_flagsE [bool boost :: regex_match< __ gnu_cxx :: __ normal_iterator< char const *，std :: basic_string< char，std :: char_traits< char>，std :: allocator< char> > >，std :: allocator< boost :: sub_match< __ gnu_cxx :: __ normal_iterator< char const *，std :: basic_string< char，std :: char_traits< char>，std :: allocator< char> > > > >，char，boost :: regex_traits< char，boost :: cpp_regex_traits< char> > >（__ gnu_cxx :: __ normal_iterator< char const *，std :: basic_string< char，std :: char_traits< char> ;, std :: allocator< char>>，__gnu_cxx :: __ normal_iterator< char const *，std： ：basic_string< char，std :: char_traits< char> ;, std :: allocator< char>>，boost :: match_results< __ gnu_cxx :: __ normal_iterator< char const *，std :: basic_string< char，std :: char_traits< ; char>，std :: allocator< char>>> ;, std :: allocator< boost :: sub_match< __ gnu_cxx :: __ normal_iterator< char const *，std :: basic_string< char，std :: char_traits< std :: allocator< char>>>>>& ;, boost :: basic_regex< char，boost :: regex_traits< char，boost :: cpp_regex_traits< char>>> const&; boost： ：regex_constants :: _ match_flags）] + 0x4c）：
未定义引用boost :: re_detail :: perl_matcher <__ gnu_cxx :: _ normal_iterator  ，std :: allocator< char> > >，std :: allocator< boost :: sub_match< __ gnu_cxx :: __ normal_iterator< char const *，std :: basic_string< char，std :: char_traits< char>，std :: allocator< char> > > > >，boost :: regex_traits< char，boost :: cpp_regex_traits< char> > > :: match（）'
  

我在'undefined reference'之前加了一个换行符......

我认为你应该在任何Boost库之前列出使用Boost函数的库。

I'm trying to compile a C++ program under Ubuntu 11.10 using boost 1.42 installed from the repository (I also tried building boost myself, but the result is the same as with the repo-boost). The source files compile but the linker gives errors... I tried for hours but couldn't find a solution to this, maybe someone can help me...

Here's the target from the Makefile

CXX = /usr/bin/g++

LDFLAGS = -L.  \
          -Lpath/to/libMy_Lib.a

CFLAGS = -I.   \
         -Wall \
         -g    \
         -O0

OBJECTS = obj1.o obj2.o

%.o: %.cpp
    $(CXX) -c $*.cpp -o $@ \
         -Wno-deprecated   \
          $(CFLAGS)

all: program

program: $(OBJECTS)
    $(CXX) $^            \
    $(LDFLAGS)           \
    -o myProg            \
    -lboost_regex        \
    -lboost_filesystem   \
    -lboost_date_time    \
    -lboost_system       \
    -lboost_thread       \
    -lMy_Lib

libMy_Lib.a is a library which also uses boost (I had no problems compiling it on the same system). All the libs look ok in /usr/lib...

Here is the output ld generates (I used make 2> output) http://ubuntuone.com/6QlU7AUZGgLGIu7sHbvDHm

Maybe the order of the libraries isn't correct (I know boost_filesystem depends on boost_system, but I'm not sure about the rest) or I forgot to specify some additional libs on which my program needs to link to...

This really buggs me and I feel like I'm blind to not see it...

解决方案

Those error messages are impressive:

../../DIAG_DECODER//libDecoder_Element.a(BaseElements_Group.o): In function `bool boost::regex_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, char, boost::regex_traits<char, boost::cpp_regex_traits<char> > >(__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, __gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, boost::match_results<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > > >&, boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > > const&, boost::regex_constants::_match_flags)':
BaseElements_Group.cpp:(.text._ZN5boost11regex_matchIN9__gnu_cxx17__normal_iteratorIPKcSsEESaINS_9sub_matchIS5_EEEcNS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEEEbT_SD_RNS_13match_resultsISD_T0_EERKNS_11basic_regexIT1_T2_EENS_15regex_constants12_match_flagsE[bool boost::regex_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, char, boost::regex_traits<char, boost::cpp_regex_traits<char> > >(__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, __gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, boost::match_results<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > > >&, boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > > const&, boost::regex_constants::_match_flags)]+0x4c):
undefined reference to `boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::match()'

I added a newline before the 'undefined reference'...

I think you should probably list your library, which uses Boost functions, before any of the Boost libraries.

这篇关于在Linux上使用GCC加强链接的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！