Hi Daniel, I am stumped on this one, hope Andrew helps ;) Jay Daniel wrote:
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@gmail.com <mailto:jayc.lawrence@gmail.com>> 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@gmail.com <mailto:jayc.lawrence@gmail.com> > <mailto: jayc.lawrence@gmail.com <mailto:jayc.lawrence@gmail.com>>> 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/tuttimer... <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/tuttimer... > > > > > Is there a list of the exact library names in boost/asio? > > > > On Nov 29, 2007 11:27 AM, <jayc.lawrence@gmail.com <mailto:jayc.lawrence@gmail.com> > <mailto:jayc.lawrence@gmail.com <mailto:jayc.lawrence@gmail.com>> > > <mailto:jayc.lawrence@gmail.com <mailto:jayc.lawrence@gmail.com> > <mailto: jayc.lawrence@gmail.com <mailto:jayc.lawrence@gmail.com>>>> 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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