[Buildroot] Target/full GDB fails to build statically
Thomas Petazzoni
thomas.petazzoni at free-electrons.com
Thu Aug 20 20:37:54 UTC 2015
Dear Alexey Brodkin,
On Thu, 20 Aug 2015 13:10:25 +0000, Alexey Brodkin wrote:
> And that's what I see in the very end:
> ----------------->8-----------------
> linux-thread-db.c:23:19: fatal error: dlfcn.h: No such file or directory
> #include <dlfcn.h>
> ^
> compilation terminated.
> Makefile:1078: recipe for target 'linux-thread-db.o' failed
> make[4]: *** [linux-thread-db.o] Error 1
> make[4]: *** Waiting for unfinished jobs....
> Makefile:8335: recipe for target 'all-gdb' failed
> make[3]: *** [all-gdb] Error 2
> Makefile:832: recipe for target 'all' failed
> make[2]: *** [all] Error 2
> ----------------->8-----------------
>
> Seeing that GDB is not disabled in case of BR2_STATIC_LIBS=y I had a hope it could
> be built. But looks like something is broken.
>
> I tried the same for ARC (where we use pretty recent gdb 7.9.1) and got exactly
> the same result.
>
> If BR2_PACKAGE_GDB_DEBUGGER is disabled gdbserver gets built perfectly fine.
> ----------------->8-----------------
> $ file build/gdb-7.8.2/gdb/gdbserver/gdbserver
> build/gdb-7.8.2/gdb/gdbserver/gdbserver: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), statically linked, not stripped
> ----------------->8-----------------
>
> So whether we need to disable building of target/full gdb statically or somebody will need to look into it.
> Given close relese of 2015.08 we may want to implement a former approach.
I believe we should mark the full gdb as requiring dynamic library
support. Maybe with threads disabled, dynamic library support is not
mandatory. But I don't think it's really worth the effort: if you want
to do static only, you have tight requirements and you probably can't
fit a full-blown gdb on your target.
So a patch making full gdb "depends on !BR2_STATIC_LIBS" would be fine
for me.
Best regards,
Thomas
--
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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