I tried to install Boost on a Linux machine (CentOs, Linux version 2.6.9-67.ELsmp). I followed the instructions on the Boost Getting Started page. The downloaded and extracted files, then I add the prefix because I am not a root user.
./bootstrap.sh --prefix=/my_path/boost-1.49.0 ./b2 install
I go to / my _path / boost-1.49.0 and check for the presence of / include / boost / and / lib / containing files there.
I also set LD_LIBRARY_PATH to / my _path / boost-1.49.0 / lib /.
To check if I have installed successfully, I will compile the following code:
main.cpp
#include <boost/regex.hpp> #include <iostream> #include <string> using namespace boost; using namespace std; int main(int argc, char *argv[]) { string line = "12345"; regex pattern("^123"); if (regex_match(line, pattern)) cout << "match." << endl; else cout << "not match." << endl; return 1; }
And compile the command:
g++ -v -I /my_path/boost-1.49.0/include/boost -L /my_path/boost-1.49.0/lib main.cpp -lboost_regex -o example
and generate the following errors:
Reading specs from /usr/lib/gcc/x86_64-redhat-linux/3.4.6/specs Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --enable-threads=posix --disable-checking --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-java-awt=gtk --host=x86_64-redhat-linux Thread model: posix gcc version 3.4.6 20060404 (Red Hat 3.4.6-9) /usr/libexec/gcc/x86_64-redhat-linux/3.4.6/cc1plus -quiet -v -I /my_path/boost-1.49.0/include/boost/ -D_GNU_SOURCE main.cpp -quiet -dumpbase main.cpp -mtune=k8 -auxbase main -version -o /tmp/ccW0ON8y.s ignoring nonexistent directory "/usr/lib/gcc/x86_64-redhat-linux/3.4.6/../../../../x86_64-redhat-linux/include" #include "..." search starts here: #include <...> search starts here: /my_path/boost-1.49.0/include/boost/ /usr/lib/gcc/x86_64-redhat-linux/3.4.6/../../../../include/c++/3.4.6 /usr/lib/gcc/x86_64-redhat-linux/3.4.6/../../../../include/c++/3.4.6/x86_64-redhat-linux /usr/lib/gcc/x86_64-redhat-linux/3.4.6/../../../../include/c++/3.4.6/backward /usr/local/include /usr/lib/gcc/x86_64-redhat-linux/3.4.6/include /usr/include End of search list. GNU C++ version 3.4.6 20060404 (Red Hat 3.4.6-9) (x86_64-redhat-linux) compiled by GNU C version 3.4.6 20060404 (Red Hat 3.4.6-9). GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 as -V -Qy -o /tmp/ccpu82sB.o /tmp/ccW0ON8y.s GNU assembler version 2.15.92.0.2 (x86_64-redhat-linux) using BFD version 2.15.92.0.2 20040927 /usr/libexec/gcc/x86_64-redhat-linux/3.4.6/collect2 --eh-frame-hdr -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2 -o example /usr/lib/gcc/x86_64-redhat-linux/3.4.6/../../../../lib64/crt1.o /usr/lib/gcc/x86_64-redhat-linux/3.4.6/../../../../lib64/crti.o /usr/lib/gcc/x86_64-redhat-linux/3.4.6/crtbegin.o -L /my_path/boost-1.49.0/lib/ -L/usr/lib/gcc/x86_64-redhat-linux/3.4.6 -L/usr/lib/gcc/x86_64-redhat-linux/3.4.6 -L/usr/lib/gcc/x86_64-redhat-linux/3.4.6/../../../../lib64 -L/usr/lib/gcc/x86_64-redhat-linux/3.4.6/../../.. -L/lib/../lib64 -L/usr/lib/../lib64 /tmp/ccpu82sB.o -lboost_regex -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc /usr/lib/gcc/x86_64-redhat-linux/3.4.6/crtend.o /usr/lib/gcc/x86_64-redhat-linux/3.4.6/../../../../lib64/crtn.o /tmp/ccpu82sB.o(.gnu.linkonce.t._ZN5boost11basic_regexIcNS_12regex_ traitsIcEESaIcEEC1EPKcjRKS3_+0x27): In function `boost::basic_regex<char, boost::regex_traits<char>, std::allocator<char> >::basic_regex(char const*, unsigned int, std::allocator<char> const&)':: undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::reg_expression(char const*, unsigned int, std::allocator<char> const&)' /tmp/ccpu82sB.o(.gnu.linkonce.t. _ZN5boost11basic_regexIcNS_12regex_traitsIcEESaIcEED1Ev+0x11): In function `boost::basic_regex<char, boost::regex_traits<char>, std::allocator<char>>::~basic_regex()': : undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::~reg_expression()' /tmp/ccpu82sB.o(.gnu.linkonce.t. _ZN5boost9re_detail12perl_matcherIN9__gnu_cxx17__normal_iteratorIPKcSsEESaINS_9sub _matchIS6_EEENS_12regex_traitsIcEESaIcEEC1ES6_S6_RNS_13match_resultsIS6_S9_EERKNS_ 14reg_expressionIcSB_SC_EENS_15regex_constants12_match_flagsE+0xa1): In function `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>, std::allocator<char>> ::perl_matcher(__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::reg_expression<char, boost::regex_traits<char>, std::allocator<char> > const&, boost::regex_constants::_match_flags)':
however, if I just compile with the default raise, which the system administers installed
g++ -v main.cpp -lboost_regex -o example
Then it’s wonderful.
Ldd example I got
libboost_regex.so.1 => /usr/lib64/libboost_regex.so.1 (0x0000002a95557000)
For some reason, I am asked not to update boost in / usr / include / boost. Is there anything that can help me solve this problem, which installs boost in a local folder and just changes the inclusion path and links to use different versions?
I am not sure if this question is stupid or not, but I searched google, but basically related questions are not set properly by -I, -L and -l in the gcc command. I have no idea the error message above is really driving me crazy. Any help is appreciated.
Thank you for your patience and time.