错误：编译GTK-3.12.2时未定义对..长列表的引用

Question

Getting 100+ errors like this:

./.libs/libgtk-3.so: undefined reference to `g_drive_can_start_degraded'

I've provided all the linker flags like -lglib-2.0 -lfreetype etc. still I'm getting those errors any help?

Answer 1

The first step is often Google. Search for g_drive_can_start_degraded to find out in which library/project it might be. The first link returns GDrive from GIO: https://developer.gnome.org/gio/stable/GDrive.html

Further down, it says glib: gio/gdrive.c

So it seems that this function is part of glib . Let's find this library:

find /usr/lib* -name "libglib*.so*"

If that doesn't show up any hits, try also the usual places like /lib* or /usr/local/lib* .

For me, it gives this list:

/usr/lib/cli/glib-sharp-2.0/libglibsharpglue-2.so
/usr/lib/vmware-installer/2.1.0/lib/lib/libglib-2.0.so.0
/usr/lib/vmware-installer/2.1.0/lib/lib/libglib-2.0.so.0/libglib-2.0.so.0
/usr/lib/vmware/lib/libglib-2.0.so.0
/usr/lib/vmware/lib/libglib-2.0.so.0/libglib-2.0.so.0
/usr/lib/vmware/lib/libglibmm-2.4.so.1
/usr/lib/vmware/lib/libglibmm-2.4.so.1/libglibmm-2.4.so.1
/usr/lib/vmware/lib/libglibmm_generate_extra_defs-2.4.so.1
/usr/lib/vmware/lib/libglibmm_generate_extra_defs-2.4.so.1/libglibmm_generate_extra_defs-2.4.so.1
/usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1.3.0
/usr/lib/x86_64-linux-gnu/libglibmm_generate_extra_defs-2.4.so.1.3.0
/usr/lib/x86_64-linux-gnu/libglib-2.0.so
/usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
/usr/lib/x86_64-linux-gnu/libglibmm_generate_extra_defs-2.4.so.1

/usr/lib/x86_64-linux-gnu/libglib-2.0.so looks like the most promising candidate. Let's see what's inside:

objdump --dynamic-syms /usr/lib/x86_64-linux-gnu/libglib-2.0.so | grep g_drive_can_start_degraded

which returns nothing. Maybe I have the wrong version of glib (2.x instead of 3.x)?

But further investigation shows that I also have /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0 :

> objdump --dynamic-syms /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0 | grep  g_drive_can_start_de
000000000003f080 g    DF .text  0000000000000078  Base        g_drive_can_start_degraded

Seems like you're missing -lgio-2.0 somewhere.

If the library didn't define the symbol but would need it, the output would look like this:

0000000000000000      DF *UND*  0000000000000000              g_setenv

Note the address is 0 and the segment is *UND* instead of .text .

Note: The order of libraries that you pass to the linker is important! The linker will search each library only once.