<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - Use of gold linker breaks debugging" href="https://bugs.freedesktop.org/show_bug.cgi?id=86666#c3">Comment # 3</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - Use of gold linker breaks debugging" href="https://bugs.freedesktop.org/show_bug.cgi?id=86666">bug 86666</a> from <a class="email" href="mailto:peter@lekensteyn.nl" title="Peter Wu <peter@lekensteyn.nl>"> Peter Wu</a> <pre>(In reply to Zbigniew Jedrzejewski-Szmek from <a href="show_bug.cgi?id=86666#c2">comment #2</a>) > (In reply to Peter Wu from <a href="show_bug.cgi?id=86666#c0">comment #0</a>) > > - The debugging section gets dropped, making the /usr/lib/debug/ files > > useless. > What about this? What are the symptoms? This is a bug different from the .eh_frame gold linker issue but also hurts the debugging experience: The cause was mentioned in the IRC channel. For some reason, libtool does not keep the -g option during linking (rm libgudev-1.0.la .libs/libgudev-1.0.so* && make libgudev-1.0.la V=1): /bin/sh ./libtool --tag=CC --mode=link gcc -std=gnu99 -pipe [-W, -I, etc.] -g -O2 -Wl,--as-needed -Wl,--no-undefined -Wl,--gc-sections -Wl,--print-gc-sections -Wl,-z,relro -Wl,-z,now -pie -Wl,-fuse-ld=gold -version-info 2:0:2 -export-dynamic -no-undefined -Wl,--version-script=../src/gudev/libgudev-1.0.sym -o libgudev-1.0.la -rpath /usr/lib src/gudev/libgudev_1_0_la-gudevclient.lo src/gudev/libgudev_1_0_la-gudevdevice.lo src/gudev/libgudev_1_0_la-gudevenumerator.lo src/gudev/libgudev_1_0_la-gudevmarshal.lo src/gudev/libgudev_1_0_la-gudevenumtypes.lo libudev.la -lgio-2.0 -lgobject-2.0 -lglib-2.0 -ldl libtool: link: gcc -shared -fPIC -DPIC src/gudev/.libs/libgudev_1_0_la-gudevclient.o src/gudev/.libs/libgudev_1_0_la-gudevdevice.o src/gudev/.libs/libgudev_1_0_la-gudevenumerator.o src/gudev/.libs/libgudev_1_0_la-gudevmarshal.o src/gudev/.libs/libgudev_1_0_la-gudevenumtypes.o -Wl,-rpath -Wl,/tmp/systemd/build/.libs ./.libs/libudev.so -lrt -lcap -lgio-2.0 -lgobject-2.0 -lglib-2.0 -ldl -flto -pthread -O2 -Wl,--as-needed -Wl,--no-undefined -Wl,--gc-sections -Wl,--print-gc-sections -Wl,-z -Wl,relro -Wl,-z -Wl,now -Wl,-fuse-ld=gold -Wl,--version-script=../src/gudev/libgudev-1.0.sym -pthread -Wl,-soname -Wl,libgudev-1.0.so.0 -o .libs/libgudev-1.0.so.0.2.0 After the above steps, there are no debug sections: objdump -h .libs/libgudev-1.0.so.0 | grep debug With '-g' appended to the libtool command above, the output is non-empty: 27 .debug_info 0000b5be 0000000000000000 0000000000000000 0000a01a 2**0 28 .debug_abbrev 00000d5b 0000000000000000 0000000000000000 000155d8 2**0 29 .debug_loc 00007f25 0000000000000000 0000000000000000 00016333 2**0 30 .debug_aranges 00000090 0000000000000000 0000000000000000 0001e258 2**0 31 .debug_ranges 00000460 0000000000000000 0000000000000000 0001e2e8 2**0 32 .debug_line 00000e11 0000000000000000 0000000000000000 0001e748 2**0 33 .debug_str 00002b19 0000000000000000 0000000000000000 0001f559 2**0 This is with GCC 4.9.2.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>