On Wed, Nov 23, 2016 at 4:45 AM, David Sterba <dste...@suse.cz> wrote:
> On Tue, Nov 22, 2016 at 01:49:15PM -0500, Mike Gilbert wrote:
>> Hi,
>>
>> I received a bug report about a build failure in a package (snapper)
>> that utilizes libbtrfs.
>>
>> https://bugs.gentoo.org/show_bug.cgi?id=600078
>>
>> To summarize the issue, the package has a configure test that executes
>> the following:
>>
>> configure:16618: x86_64-pc-linux-gnu-gcc -o conftest -O2 -pipe
>> -march=amdfam10 -frecord-gcc-switches -std=c99 -Wall -Wextra
>> -Wformat=2 -Wmissing-prototypes -Wno-unused-parameter
>> -DCONFDIR='"/etc/conf.d"' -Wl,-O1 -Wl,--as-needed conftest.c -lbtrfs
>> >&5
>> /usr/lib/gcc/x86_64-pc-linux-gnu/5.4.0/../../../../lib64/libbtrfs.so:
>> undefined reference to `lookup_path_rootid'
>> collect2: error: ld returned 1 exit status
>> configure:16618: $? = 1
>>
>> It seems that the "lookup_path_rootid" symbol is not included in the library.
>>
>> Could someone look into this?
>
> Thanks for the report, bug reproduced here. My referential snapper build
> does not fail so I did not know about that. I've now extended the
> library test to cover the missing symbol. As the build does not fail
> it's needed to actually run the built binary.
That's very strange; I definitely get a build-time failure here. Maybe
there's some difference in your toolchain.
On current master:
floppym@naomi btrfs-progs % make V=1 library-test
[LD] library-test
gcc -g -O1 -Wall -D_FORTIFY_SOURCE=2 -include config.h
-DBTRFS_FLAT_INCLUDES -D_XOPEN_SOURCE=700 -fno-strict-aliasing -fPIC
-I/home/floppym/src/btrfs-progs
-I/home/floppym/src/btrfs-progs/kernel-lib -o library-test
library-test.o -rdynamic -lbtrfs
/usr/lib/gcc/x86_64-pc-linux-gnu/5.4.0/../../../../lib64/libbtrfs.so:
undefined reference to `lookup_path_rootid'
collect2: error: ld returned 1 exit status
make: *** [Makefile:433: library-test] Error 1
--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
