msys build fail - Githubissues

What is the expected behavior?
builds

What do you see instead?
does not build

What version are you using?
Eider
http://code.google.com/p/webm/downloads/detail?name=libvpx-v1.1.0.zip

On what operating system?
Windows7

Can you reproduce using the vpxdec or vpxenc tools? What command line are
you using?
unzip libvpx-v1.1.0.zip
../libvpx-v1.1.0/configure --target=x86-win32-gcc --disable-multithread 
--enable-debug --enable-postproc --enable-postproc-visualizer --prefix=/mingw
make -i V=1

Please provide any additional information below.
../libvpx-v1.1.0/vp8/encoder/mcomp.c:222:33: warning: variable 'buf_c2' set but
not used [-Wunused-but-set-variable]
../libvpx-v1.1.0/vp8/decoder/decodframe.c:808:21: warning: unused variable 'prev
_mb_rows' [-Wunused-variable]

    [LD] vpxdec
./libvpx.a(systemdependent.c.o): In function `once':
c:\on2\msys32/../libvpx-v1.1.0/vp8/common/generic/systemdependent.c:91: undefine
d reference to `_imp__pthread_once'
collect2: ld returned 1 exit status
make[1]: [vpxdec] Error 1 (ignored)
    [CC] y4minput.c.o
    [CC] libmkv/EbmlWriter.c.o
    [CC] vpxenc.c.o
    [LD] vpxenc
./libvpx.a(systemdependent.c.o): In function `once':
c:\on2\msys32/../libvpx-v1.1.0/vp8/common/generic/systemdependent.c:91: undefine
d reference to `_imp__pthread_once'
collect2: ld returned 1 exit status
make[1]: [vpxenc] Error 1 (ignored)
    [CC] vp8_scalable_patterns.c.o
    [LD] vp8_scalable_patterns
./libvpx.a(systemdependent.c.o): In function `once':
c:\on2\msys32/../libvpx-v1.1.0/vp8/common/generic/systemdependent.c:91: undefine
d reference to `_imp__pthread_once'
collect2: ld returned 1 exit status
make[1]: [vp8_scalable_patterns] Error 1 (ignored)
    [CC] simple_decoder.c.o
    [LD] simple_decoder
./libvpx.a(systemdependent.c.o): In function `once':
c:\on2\msys32/../libvpx-v1.1.0/vp8/common/generic/systemdependent.c:91: undefine
d reference to `_imp__pthread_once'
collect2: ld returned 1 exit status
make[1]: [simple_decoder] Error 1 (ignored)
    [CC] postproc.c.o
    [LD] postproc
./libvpx.a(systemdependent.c.o): In function `once':
c:\on2\msys32/../libvpx-v1.1.0/vp8/common/generic/systemdependent.c:91: undefine
d reference to `_imp__pthread_once'
collect2: ld returned 1 exit status
make[1]: [postproc] Error 1 (ignored)
    [CC] decode_to_md5.c.o
    [LD] decode_to_md5
./libvpx.a(systemdependent.c.o): In function `once':
c:\on2\msys32/../libvpx-v1.1.0/vp8/common/generic/systemdependent.c:91: undefine
d reference to `_imp__pthread_once'
collect2: ld returned 1 exit status
make[1]: [decode_to_md5] Error 1 (ignored)
    [CC] simple_encoder.c.o
    [LD] simple_encoder
./libvpx.a(systemdependent.c.o): In function `once':
c:\on2\msys32/../libvpx-v1.1.0/vp8/common/generic/systemdependent.c:91: undefine
d reference to `_imp__pthread_once'
collect2: ld returned 1 exit status
make[1]: [simple_encoder] Error 1 (ignored)
    [CC] twopass_encoder.c.o
    [LD] twopass_encoder
./libvpx.a(systemdependent.c.o): In function `once':
c:\on2\msys32/../libvpx-v1.1.0/vp8/common/generic/systemdependent.c:91: undefine
d reference to `_imp__pthread_once'
collect2: ld returned 1 exit status
make[1]: [twopass_encoder] Error 1 (ignored)
    [CC] force_keyframe.c.o
    [LD] force_keyframe
./libvpx.a(systemdependent.c.o): In function `once':
c:\on2\msys32/../libvpx-v1.1.0/vp8/common/generic/systemdependent.c:91: undefine
d reference to `_imp__pthread_once'
collect2: ld returned 1 exit status
make[1]: [force_keyframe] Error 1 (ignored)
    [CC] decode_with_drops.c.o
    [LD] decode_with_drops
./libvpx.a(systemdependent.c.o): In function `once':
c:\on2\msys32/../libvpx-v1.1.0/vp8/common/generic/systemdependent.c:91: undefine
d reference to `_imp__pthread_once'
collect2: ld returned 1 exit status
make[1]: [decode_with_drops] Error 1 (ignored)
    [CC] error_resilient.c.o
    [LD] error_resilient
./libvpx.a(systemdependent.c.o): In function `once':
c:\on2\msys32/../libvpx-v1.1.0/vp8/common/generic/systemdependent.c:91: undefine
d reference to `_imp__pthread_once'
collect2: ld returned 1 exit status
make[1]: [error_resilient] Error 1 (ignored)
    [CC] vp8_set_maps.c.o
    [LD] vp8_set_maps
./libvpx.a(systemdependent.c.o): In function `once':
c:\on2\msys32/../libvpx-v1.1.0/vp8/common/generic/systemdependent.c:91: undefine
d reference to `_imp__pthread_once'
collect2: ld returned 1 exit status
make[1]: [vp8_set_maps] Error 1 (ignored)
    [CC] vp8cx_set_ref.c.o
    [LD] vp8cx_set_ref
./libvpx.a(systemdependent.c.o): In function `once':
c:\on2\msys32/../libvpx-v1.1.0/vp8/common/generic/systemdependent.c:91: undefine
d reference to `_imp__pthread_once'
collect2: ld returned 1 exit status
make[1]: [vp8cx_set_ref] Error 1 (ignored)
Original issue reported on code.google.com by fbarch...@chromium.org on 26 Nov 2012 at 7:31
Chen-tao / webm

msys build fail #506
