undefined reference to `raid_gen?_avx2ext' during compile

[neurocis]

OS Debian Squeeze w/wheezy backports x64

During compile:

gcc  -g -O2 -Wall -Wextra   -o snapraid raid/raid.o raid/module.o raid/tables.o raid/int.o raid/x86.o raid/intz.o raid/x86z.o raid/helper.o raid/memory.o raid/test.o raid/tag.o tommyds/tommy.o cmdline/snapraid.o cmdline/util.o cmdline/elem.o cmdline/state.o cmdline/scan.o cmdline/sync.o cmdline/check.o cmdline/dry.o cmdline/rehash.o cmdline/scrub.o cmdline/status.o cmdline/dup.o cmdline/list.o cmdline/pool.o cmdline/parity.o cmdline/handle.o cmdline/nano.o cmdline/fnmatch.o cmdline/selftest.o cmdline/speed.o cmdline/import.o cmdline/search.o cmdline/mingw.o cmdline/unix.o  -lrt
raid/tag.o:(.data+0x1d8): undefined reference to `raid_gen3_avx2ext'
raid/tag.o:(.data+0x1e8): undefined reference to `raid_genz_avx2ext'
raid/tag.o:(.data+0x1f8): undefined reference to `raid_gen4_avx2ext'
raid/tag.o:(.data+0x208): undefined reference to `raid_gen5_avx2ext'
raid/tag.o:(.data+0x218): undefined reference to `raid_gen6_avx2ext'
collect2: ld returned 1 exit status
make[1]: *** [snapraid] Error 1
make[1]: Leaving directory `/root/snapraid-7.0'
make: *** [all] Error 2

Request build assistance, not sure where this make issue is coming into play or what dependency I may be missing? These look to be defined in internal.h for test units (depricated?)

Thanks

[Andrea Mazzoleni]

Hi neurocis,

It's the compiler too old to support AVX2, and I missed one #ifdef to support this case. You can fix the build using the following patch for tag.c.

I'm going to fix that in 7.1.

Ciao,
Andrea

commit 15e6e6d8a9e9a55a5d68524e343f13be3eedab8f
Author: Andrea Mazzoleni <amadvance@gmail.com>
Date:   Wed Dec 10 21:27:52 2014 +0100

    Fixes build issue with old compilers in the x64 platform.

diff --git a/raid/tag.c b/raid/tag.c
index 9afe405..91c1fef 100644
--- a/raid/tag.c
+++ b/raid/tag.c
@@ -63,12 +63,14 @@ static struct raid_func {
        { "ssse3e", raid_gen4_ssse3ext },
        { "ssse3e", raid_gen5_ssse3ext },
        { "ssse3e", raid_gen6_ssse3ext },
+#ifdef CONFIG_AVX2
        { "avx2e", raid_gen3_avx2ext },
        { "avx2e", raid_genz_avx2ext },
        { "avx2e", raid_gen4_avx2ext },
        { "avx2e", raid_gen5_avx2ext },
        { "avx2e", raid_gen6_avx2ext },
 #endif
+#endif
        { 0, 0 }
 };

[neurocis]

Excellent, that sussed it. Threw a pull request on github to further fix sse2 ssse3 under x86_64.

Cheers!