Lorenzo Bettini wrote:
still problems (please read below)
If I do (thus, using the .a file directly)
g++ regex_use.o $HOME/boost/lib/libboost_regex.a -o regex_use_static
I don't get errors, but the binary still uses dynamic libraries:
ldd regex_use_static linux-gate.so.1 => (0xb800e000) libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0xb7eff000) libm.so.6 => /lib/tls/i686/cmov/libm.so.6 (0xb7ed9000) libgcc_s.so.1 => /lib/libgcc_s.so.1 (0xb7ec9000) libc.so.6 => /lib/tls/i686/cmov/libc.so.6 (0xb7d66000) /lib/ld-linux.so.2 (0xb800f000)
This is expected. gcc does use shared libraries by default.
./bjam --layout=system threading=single runtime-link=static link=static install
(Note that I have omitted --build-dir, since it's not really necessary).
I did, and now get the library installed, but, again, I get:
/usr/lib/gcc/i486-linux-gnu/4.3.3/libstdc++.a(locale.o): In function `std::locale::_Impl::_M_install_cache(std::locale::facet const*, unsigned int)': (.text._ZNSt6locale5_Impl16_M_install_cacheEPKNS_5facetEj+0x2a): undefined reference to `pthread_mutex_lock'
This may suggest that libstdc++ unconditionally uses threading...
g++ -static regex_use.o -I$HOME/boost/include -L$HOME/boost/lib -lboost_regex -o regex_use_static /home/bettini/boost/lib/libboost_regex.a(static_mutex.o): In function `boost::scoped_static_mutex_lock::unlock()': static_mutex.cpp:(.text+0x16): undefined reference to `pthread_mutex_unlock' /home/bettini/boost/lib/libboost_regex.a(static_mutex.o): In function `boost::scoped_static_mutex_lock::lock()': ...
... and that causes Boost.Regex to make use of threads as well. Can you try removing everything again, and rebuild with the additional define=BOOST_DISABLE_THREADS=1 --without-thread options? If that does not help, it means that libstdc++ just needs threads, and there's no way around that. - Volodya