I saw the problem already is known at
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1020327
and
https://trac.filezilla-project.org/ticket/12777
<https://trac.filezilla-project.org/ticket/12777>
I downloaded source filezilla-3.63.2.1 from filezilla website and got
the same problem as mentioned at that bug:
gcc -DHAVE_CONFIG_H -I../../../src/putty -I../../config -DNO_GSSAPI
-D_FILE_OFFSET_BITS=64 -fpch-preprocess -g -O2 -Wall -MT
libfzputtycommon_a-sshsha.o -MD -MP -MF
.deps/libfzputtycommon_a-sshsha.Tpo -c -o libfzputtycommon_a-sshsha.o
`test -f 'sshsha.c' || echo '../../../src/putty/'`sshsha.c
In file included from /usr/lib/gcc/i686-linux-gnu/12/include/immintrin.h:98,
from ../../../src/putty/sshsha.c:347:
/usr/lib/gcc/i686-linux-gnu/12/include/avx512fp16intrin.h:38:9: error:
‘_Float16’ is not supported on this target
I changed the Makefile at src/putty and added -msse4.1 to CFLAGS and
CXXFLAGS.
After this change I could compile filezilla without a problem.
Installing filezilla gave some problems because the files are not
installed at the right location, but with some symbolic links
filezilla works without a problem.
According to "cat proc/cpuinfo" my cpu supports sse and sse2.
Like Tim Kosse I think this is a gcc-12-bug, not a filezilla-bug.
I do not see any changes in this area at filezilla since previous
release filezilla-3.57.0.
If I compile sshsha.c at that release with gcc-12, I get the same error.
If I compile sshsha.c at both releases with gcc-11, I get no error.
If a pragma GCC target is activated for some source, then the
compiler should not generate an error if the build target is not
supporting this. This makes cross-compilation impossible.
In that case it is the responsibility of the programmer to assure that
this code is only executed if the specified target is available.
I think pragma GCC target sse4.1 (locally) and -msse4.1 (globally)
should do the same thing.
