Hi there PJProject devs. When compiling Asterisk, I encountered an error similar to this: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=804460 The linker was told to include shared libraries that did not exist on the system: x86_64-linux-gnu-gcc -o pjsip/dialplan_functions.o -c ... -lpjsua2 -lstdc++ -lpjsua -lpjsip-ua -lpjsip-simple -lpjsip -lpjmedia-codec -lpjmedia -lpjmedia-videodev -lpjmedia-audiodev -lpjmedia -lpjnath -lpjlib-util -lsrtp -lpj -lm -lrt -lpthread -lSDL2 -lavformat-ffmpeg -lavcodec-ffmpeg -lswscale-ffmpeg -lavutil-ffmpeg -lv4l2 -lopencore-amrnb -lopencore-amrwb /usr/bin/ld: cannot find -lSDL2 /usr/bin/ld: cannot find -lavformat-ffmpeg ... I believe that the problem is caused by pkg-config --libs telling us to include more libs than it should. For example, on this system, it says: $ pkg-config --libs libpjproject -L/usr/local/lib -lpjsua2 -lstdc++ -lpjsua -lpjsip-ua -lpjsip-simple - lpjsip -lpjmedia-codec -lpjmedia-videodev -lpjmedia-audiodev -lpjmedia -lpjnath -lpjlib-util -lsrtp -lgsmcodec -lspeex -lilbccodec -lg7221codec -lpj -luuid -lm -lrt -lpthread -lcrypto -lssl The -luuid and -lm and -lrt and a few more should not be in that list. They are used and linked by libpjsip.so (and others), so we don't need to link to them another time: $ ldd /usr/local/lib/libpjsip.so | grep uuid libuuid.so.1 => /lib/x86_64-linux-gnu/libuuid.so.1 (0x00007fdf0a8da000) Are more complete writeup is here: http://wjd.nu/notes/2016#missing-sofiles-linker-asterisk Attached is my attempt at fixing it. * It adds a new make target: libpjproject.pc That way I didn't have to `make install` the entire time. * It replaces a few `rmdir` with `$(HOST_RMDIR)` (and friends) for consistency. * For the libpjproject.pc target, it checks whether any *.so is built. If so, it separates the dynamic libs from the privately used ones. * If no *.so is built, the libpjproject.pc is built as it was before this change (with an additional empty "Libs.private" section). This way we won't cause unintentional breakage for static builds. Let me know if this works for you (and if this is the right channel to submit a patch). Cheers! Walter Doekes OSSO B.V. ==== $ diff libpjproject.pc.original libpjproject.pc.after 12a13 > Libs.private: $ cat libpjproject.pc.enable_shared | tail -n3 Libs: -L${libdir} -lsrtp -lresample -lgsmcodec -lspeex -lilbccodec -lg7221codec -lportaudio -lpjsua2 -lpjsua -lpjsip-ua -lpjsip-simple -lpjsip -lpjmedia-codec -lpjmedia-videodev -lpjmedia -lpjmedia-audiodev -lpjnath -lpjlib-util -lpj Libs.private: -lstdc++ -lssl -lcrypto -luuid -lm -lrt -lpthread -lavcodec -lavutil -lv4l2 Cflags: -I${includedir} -I/usr/local/include -DPJ_AUTOCONF=1 -O2 -DPJ_IS_BIG_ENDIAN=0 -DPJ_IS_LITTLE_ENDIAN=1 -fPIC

Hi Walter, Thanks for the patch and the detail info. And yes, this is the right channel to submit a patch :) We'll review this internally first and get back to you as soon as possible. BR, nanang On Wed, Feb 24, 2016 at 4:35 PM, Walter Doekes <walter+pjsip@wjd.nu> wrote: > Hi there PJProject devs. > > When compiling Asterisk, I encountered an error similar to this: > https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=804460 > > The linker was told to include shared libraries that did not exist on the > system: > > x86_64-linux-gnu-gcc -o pjsip/dialplan_functions.o -c > ... > -lpjsua2 -lstdc++ -lpjsua -lpjsip-ua -lpjsip-simple > -lpjsip -lpjmedia-codec -lpjmedia -lpjmedia-videodev > -lpjmedia-audiodev -lpjmedia -lpjnath -lpjlib-util > -lsrtp -lpj -lm -lrt -lpthread -lSDL2 -lavformat-ffmpeg > -lavcodec-ffmpeg -lswscale-ffmpeg -lavutil-ffmpeg -lv4l2 > -lopencore-amrnb -lopencore-amrwb > /usr/bin/ld: cannot find -lSDL2 > /usr/bin/ld: cannot find -lavformat-ffmpeg > ... > > > I believe that the problem is caused by pkg-config --libs telling us to > include more libs than it should. > > For example, on this system, it says: > > $ pkg-config --libs libpjproject > -L/usr/local/lib -lpjsua2 -lstdc++ -lpjsua -lpjsip-ua > -lpjsip-simple - lpjsip -lpjmedia-codec -lpjmedia-videodev > -lpjmedia-audiodev -lpjmedia -lpjnath -lpjlib-util -lsrtp > -lgsmcodec -lspeex -lilbccodec -lg7221codec -lpj -luuid -lm > -lrt -lpthread -lcrypto -lssl > > The -luuid and -lm and -lrt and a few more should not be in that list. > They are used and linked by libpjsip.so (and others), so we don't need to > link to them another time: > > $ ldd /usr/local/lib/libpjsip.so | grep uuid > libuuid.so.1 => /lib/x86_64-linux-gnu/libuuid.so.1 (0x00007fdf0a8da000) > > > Are more complete writeup is here: > http://wjd.nu/notes/2016#missing-sofiles-linker-asterisk > > > Attached is my attempt at fixing it. > > * It adds a new make target: libpjproject.pc > That way I didn't have to `make install` the entire time. > > * It replaces a few `rmdir` with `$(HOST_RMDIR)` (and friends) for > consistency. > > * For the libpjproject.pc target, it checks whether any *.so is built. > If so, it separates the dynamic libs from the privately used ones. > > * If no *.so is built, the libpjproject.pc is built as it was before > this change (with an additional empty "Libs.private" section). > This way we won't cause unintentional breakage for static builds. > > > Let me know if this works for you (and if this is the right channel to > submit a patch). > > Cheers! > Walter Doekes > OSSO B.V. > > ==== > > $ diff libpjproject.pc.original libpjproject.pc.after > 12a13 > > Libs.private: > > > $ cat libpjproject.pc.enable_shared | tail -n3 > Libs: -L${libdir} -lsrtp -lresample -lgsmcodec -lspeex -lilbccodec > -lg7221codec -lportaudio -lpjsua2 -lpjsua -lpjsip-ua -lpjsip-simple > -lpjsip -lpjmedia-codec -lpjmedia-videodev -lpjmedia -lpjmedia-audiodev > -lpjnath -lpjlib-util -lpj > Libs.private: -lstdc++ -lssl -lcrypto -luuid -lm -lrt -lpthread -lavcodec > -lavutil -lv4l2 > Cflags: -I${includedir} -I/usr/local/include -DPJ_AUTOCONF=1 -O2 > -DPJ_IS_BIG_ENDIAN=0 -DPJ_IS_LITTLE_ENDIAN=1 -fPIC > > > _______________________________________________ > Visit our blog: http://blog.pjsip.org > > pjsip mailing list > pjsip@lists.pjsip.org > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org > >