[Buildroot] [PATCH v2] gdb: specify where to find lzma libraries

[Peter Korsgaard]

>>>>> "Vicente" == Vicente Olivert Riera <Vincent.Riera at imgtec.com> writes:

 > As reported in...
 >   https://bugs.busybox.net/show_bug.cgi?id=8786

 > ..., gdb fails to build with xz and expat support at the same time when
 > using an external toolchain.

 > This is how the problem is shown:

 > checking for liblzma... no
 > configure: error: missing liblzma for --with-lzma

 > And having a deeper look in gdb/config.log we can se a message like this
 > one:

 > /lib64/liblzma.so.5: undefined reference to `clock_gettime at GLIBC_2.17'

 > As Thomas said in the bug report quoted above, that error is related to
 > the fact that it find the host's lzma.

 > Adding --with-lzma-prefix=$(STAGING_DIR)/usr to GDB_CONF_OPTS fixes the
 > problem.

 > Credit-to: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
 > Signed-off-by: Vicente Olivert Riera <Vincent.Riera at imgtec.com>
 > ---
 > Changes v1 -> v2:
 >  - Adding --with-lzma-prefix=$(HOST_DIR)/usr to GDB_CONF_OPTS is wrong.
 >    Instead, we should add --with-lzma-prefix=$(STAGING_DIR)/usr. Thanks
 >    to Peter Korsgaard for highlighting the mistake.

Committed, thanks.

-- 
Venlig hilsen,
Peter Korsgaard