Re: [Boost-users] Simple Linking Error

From: Daniel (daniel.cubetek_at_[hidden])
Date: 2007-11-29 12:48:22

That's not in the library list (http://boost.org/libs/libraries.htm)
But I tried anyway, and it didn't work, as expected:
/usr/lib/gcc/i486-pc-linux-gnu/4.1.2/../../../../i486-pc-linux-gnu/bin/ld:
cannot find -lboost_system

On Nov 29, 2007 12:34 PM, <jayc.lawrence_at_[hidden]> wrote:

> Hi Daniel,
>
> Try adding -lboost_system to your compile line.
>
> Jay
>
> Daniel wrote:
> > Here's the output:
> > $  g++ -v -s -I/usr/include/boost -lboost_date_time -pthread ./timer.cpp
> > -o ./timer
> > Using built-in specs.
> > Target: i486-pc-linux-gnu
> > Configured with: /var/tmp/portage/sys-devel/gcc-4.1.2/work/gcc-
> > 4.1.2/configure --prefix=/usr
> > --bindir=/usr/i486-pc-linux-gnu/gcc-bin/4.1.2
> > --includedir=/usr/lib/gcc/i486-pc-linux-gnu/4.1.2/include
> > --datadir=/usr/share/gcc-data/i486-pc-linux-gnu/4.1.2
> > --mandir=/usr/share/gcc-data/i486-pc-linux-gnu/4.1.2/man
> > --infodir=/usr/share/gcc-data/i486-pc-linux-gnu/4.1.2/info
> >
> --with-gxx-include-dir=/usr/lib/gcc/i486-pc-linux-gnu/4.1.2/include/g++-v4
> > --host=i486-pc-linux-gnu --build=i486-pc-linux-gnu --disable-altivec
> > --enable-nls --without-included-gettext --with-system-zlib
> > --disable-checking --disable-werror --enable-secureplt
> > --disable-libunwind-exceptions --disable-multilib --enable-libmudflap
> > --disable-libssp --disable-libgcj --with-arch=i486
> > --enable-languages=c,c++,fortran --enable-shared --enable-threads=posix
> > --enable-__cxa_atexit --enable-clocale=gnu
> > Thread model: posix
> > gcc version 4.1.2 (Gentoo 4.1.2 p1.0.2)
> >  /usr/libexec/gcc/i486-pc-linux-gnu/4.1.2/cc1plus -quiet -v
> > -I/usr/include/boost -D_GNU_SOURCE -D_REENTRANT ./timer.cpp -quiet
> > -dumpbase timer.cpp -march=i486 -auxbase timer -version -o
> /tmp/cc9RRPjp.s
> > ignoring nonexistent directory
> >
> "/usr/lib/gcc/i486-pc-linux-gnu/4.1.2/../../../../i486-pc-linux-gnu/include"
> > #include "..." search starts here:
> > #include <...> search starts here:
> >  /usr/include/boost
> >  /usr/lib/gcc/i486-pc-linux-gnu/4.1.2/include/g++-v4
> >  /usr/lib/gcc/i486-pc-linux-gnu/4.1.2/include/g++-v4/i486-pc-linux-gnu
> >  /usr/lib/gcc/i486-pc-linux-gnu/4.1.2/include/g++-v4/backward
> >  /usr/local/include
> >  /usr/lib/gcc/i486-pc-linux-gnu/4.1.2/include
> >  /usr/include
> > End of search list.
> > GNU C++ version 4.1.2 (Gentoo 4.1.2 p1.0.2) (i486-pc-linux-gnu)
> >         compiled by GNU C version 4.1.2 (Gentoo 4.1.2 p1.0.2).
> > GGC heuristics: --param ggc-min-expand=46 --param ggc-min-heapsize=30755
> > Compiler executable checksum: 4ca4b00b3bea7fbbb8f68a78703ea1b5
> >
>  /usr/lib/gcc/i486-pc-linux-gnu/4.1.2/../../../../i486-pc-linux-gnu/bin/as
> > -V -Qy -o /tmp/ccgiUm3Z.o /tmp/cc9RRPjp.s
> > GNU assembler version 2.16.1 (i486-pc-linux-gnu) using BFD version
> 2.16.1
> >  /usr/libexec/gcc/i486-pc-linux-gnu/4.1.2/collect2 --eh-frame-hdr -m
> > elf_i386 -dynamic-linker /lib/ld-linux.so.2 -o ./timer -s
> > /usr/lib/gcc/i486-pc-linux-gnu/4.1.2/../../../crt1.o
> > /usr/lib/gcc/i486-pc-linux-gnu/4.1.2/../../../crti.o
> > /usr/lib/gcc/i486-pc-linux-gnu/4.1.2/crtbegin.o
> > -L/usr/lib/gcc/i486-pc-linux-gnu/4.1.2
> > -L/usr/lib/gcc/i486-pc-linux-gnu/4.1.2
> > -L/usr/lib/gcc/i486-pc-linux-gnu/4.1.2/../../../../i486-pc-linux-gnu/lib
> > -L/usr/lib/gcc/i486-pc-linux-gnu/4.1.2/../../.. -lboost_date_time
> > /tmp/ccgiUm3Z.o -lstdc++ -lm -lgcc_s -lgcc -lpthread -lc -lgcc_s -lgcc
> > /usr/lib/gcc/i486-pc-linux-gnu/4.1.2/crtend.o
> > /usr/lib/gcc/i486-pc-linux-gnu/4.1.2/../../../crtn.o
> > /tmp/ccgiUm3Z.o: In function
> > `__static_initialization_and_destruction_0(int, int)':
> > timer.cpp:(.text+0x13b): undefined reference to
> > `boost::system::get_system_category()'
> > timer.cpp:(.text+0x145): undefined reference to
> > `boost::system::get_posix_category()'
> > timer.cpp:(.text+0x14f): undefined reference to
> > `boost::system::get_posix_category()'
> > timer.cpp:(.text+0x159): undefined reference to
> > `boost::system::get_system_category()'
> > collect2: ld returned 1 exit status
> >
> > On Nov 29, 2007 12:06 PM, <jayc.lawrence_at_[hidden]
> > <mailto:jayc.lawrence_at_[hidden]>> wrote:
> >
> >     Hi Daniel,
> >
> >     I just did a little digging, regarding that particular error it has
> been
> >     suggested previously to add -pthread to your compile string. Could
> you
> >     give us more output like what other undefined references there are?
> >
> >     Jay
> >
> >     Daniel wrote:
> >      > including the -I/path/to/boost seemed to do the trick, however,
> >     once I
> >      > started utilizing it (asio/date_time) I started getting things
> >     such as
> >      > undefined reference to `pthread_detach'
> >      >
> >      > Code directly taken from the tutorial here:
> >      >
> >
> http://asio.sourceforge.net/boost_asio_0_3_7/libs/asio/doc/tutorial/tuttimer1src.html
> >     <
> http://asio.sourceforge.net/boost_asio_0_3_7/libs/asio/doc/tutorial/tuttimer1src.html
> >
> >      >
> >      > Is there a list of the exact library names in boost/asio?
> >      >
> >      > On Nov 29, 2007 11:27 AM, <jayc.lawrence_at_[hidden]
> >     <mailto:jayc.lawrence_at_[hidden]>
> >      > <mailto:jayc.lawrence_at_[hidden]
> >     <mailto:jayc.lawrence_at_[hidden]>>> wrote:
> >      >
> >      >     Hi Daniel,
> >      >
> >      >     Where were your boost header files and libraries compiled to?
> >     I had
> >      >     similar issues and John Maddock helped me solve a path issue.
> >     Try adding
> >      >
> >      >     -I/path/to/boost
> >      >
> >      >     to your compile string e.g
> >      >
> >      >     g++ -v -s -I/path/to/boost myfile.cpp -o myfile.exe
> >      >
> >      >     you might need to add the relevant
> >     -lboost_library_name_goes_here to the
> >      >     end of that compile string, where
> >     boost_library_name_goes_here is the
> >      >     name of the library you are using.
> >      >
> >      >     I thought this would be easier on linux than windows to be
> >     honest and
> >      >     here you are having some problems !
> >      >
> >      >     Hope this helps.
> >      >
> >      >     Jay
> >      >
> >      >     Daniel wrote:
> >      >      > I wrote a simple "Hello, world!" program to test if
> >     boost/asio was
> >      >      > working correctly:
> >      >      >
> >      >      > #include <iostream>
> >      >      > #include <boost/date_time/posix_time/posix_time.hpp>
> >      >      >
> >      >      > int main()
> >      >      > {
> >      >      >   std::cout << "Hello, world!\n";
> >      >      >   return 0;
> >      >      > }
> >      >      >
> >      >      > But, I get this: (GCC C++ 4.1.2/Linux version
> >     2.6.22-gentoo-r8)
> >      >      > test.cpp:(.text+0x10b): undefined reference to
> >      >      > `boost::system::get_system_category()'
> >      >      > test.cpp:(.text+0x115): undefined reference to
> >      >      > `boost::system::get_posix_category()'
> >      >      > test.cpp:(.text+0x11f): undefined reference to
> >      >      > `boost::system::get_posix_category()'
> >      >      > test.cpp:(.text+0x129): undefined reference to
> >      >      > `boost::system::get_system_category()'
> >      >      >
> >      >      >
> >      >      > This happens when I used '#include
> >      >      > <boost/date_time/posix_time/posix_time.hpp>'
> >      >      > I can't figure out what I'm missing
> >      >      >
> >      >      >
> >      >      >
> >      >
> >
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