Dan, I am doing the same as you. You have to have the gcc-295.3 source to build the shared library. Follow the instructions in Chris Rutters' toolchain faq under building the toolchain. All of these steps were already done in the cross tar you installed but you need the gcc source so you can recompile for g++ with shared libraries. Assuming you have the source installed you have to cd to gcc-2.95.3 directory and
./configure --target=arm-linux --prefix=/usr/local/arm/2.95.3 --with-headers=<path to /linux/include> --enable-shared=yes --enable-languages=c++ make make install When you are done you should have a libstdc++-3-libc6.1-2-2.10.0.so file in /usr/local/arm/2.95.3/arm-linux/lib Once you do this you normal cross compiles should use the shared library. BTW make sure you strip you program of symbols. You will save alot of space. You have to put the main .so lib on you embedded device in /lib and run ldconfig for your new smaller program to run. On Mon, 2001-12-03 at 03:32, Dan ABITBOL wrote: > Hello Philip, Hello Harris > > In fact , I m cross compiling and cross linking my main programm for an > arm-linux proceessor. > the arm-linux linker links my main with the the static libstdc++ of the > arm-toolchain. its size averages 2.5 Mb > > My work is to downsize my main. So I wanted to link it with the dynamic > version of lthe libstdc++ against the static one . > > So as I had only the static one , I made all I described in my former emails > to have the dynamic one . > So was it the right way ? I dont have ./configure tools ... > How can I make out ? what shoul i do to built the dynamic library from the > static one and what do I have to write in my makefile to link my main with it > against the static one that the linker automatically calls ? > > PS: what PDC means ? > > Thank you both for your help and advice . > Dan > > > > > > > > > Le Vendredi 30 Novembre 2001 20:36, Philip Blundell a �crit : > > > > In message <[EMAIL PROTECTED]>, Dan ABITBOL > writes: > > >4/ then juste make > > >arm-linux-g++ -shared -fpic -ldl -o libstdc++.x.x.x.so *.o > > >the you ll have the shared one ....whic is libstdc++.x.x.x.so > > > > That doesn't create a shared library. You get a dynamic object, but using > > -fpic during final link doesn't stop everything inside the library being > > PDC. > > > > Incidentally, it isn't necessary to manually unpack the archive. You can > > just do "gcc -Wl,--whole-archive libxx.a ...". > > > > >Could you also help me? once we have our shared library, how I do to link > > > my main with the dynamic one and prevent the arm-linux-linker from > > > linking with the static one ? > > > > GNU ld should always prefer a shared object if you have one. > > > > p. > > > > > > > > _______________________________________________ > > http://lists.arm.linux.org.uk/mailman/listinfo/linux-arm > > Please visit the above address for information on this list. _______________________________________________ http://lists.arm.linux.org.uk/mailman/listinfo/linux-arm Please visit the above address for information on this list.
