Re: [Discuss-gnuradio] building volk in MinGW

[Kyle Zhou]

> > I run test_all but without success.
> > What I got is:
> >
> > .sse2 not available... no test performed
> > .sse3 not available... no test performed
> > .sse3 not available... no test performed
> > .sse3 not available... no test performed
> > .sse3 not available... no test performed
> > .sse3 not available... no test performed
> > .sse not available... no test performed
> > .sse not available... no test performed
> > .sse2 not available... no test performed
> > .ssse3 not available... no test performed
> > .ssse3 not available... no test performed
> > .ssse3 not available... no test performed
> > .sse2 not available... no test performed
> > .32f_add_aligned
> >
> > after that a Windows popup message is up asking if report problem to MS.
> > It seems to be some exception raised.
> > I have no experience in cppunit so really no idea what is happening.
> > Kyle
>
> Don't know what to say about this one yet. Just more evidence that I
> really need to get a Windows and OSX machine to test with.
>
> Thanks again.
>
> Tom

After some looking into the codes, I have the following findings.

all qa_* code include <volk/volk.h>, which in turn includes 
<volk/volk_config.h>
However, volk_config.h has the following:

#undef LV_HAVE_GENERIC
#undef LV_HAVE_ALTIVEC
#undef LV_HAVE_32
#undef LV_HAVE_64
#undef LV_HAVE_3DNOW
#undef LV_HAVE_ABM
#undef LV_HAVE_POPCOUNT
#undef LV_HAVE_MMX
#undef LV_HAVE_SSE
#undef LV_HAVE_SSE2
#undef LV_HAVE_SSE3
#undef LV_HAVE_SSSE3
#undef LV_HAVE_SSE4_A
#undef LV_HAVE_SSE4_1
#undef LV_HAVE_SSE4_2
#undef LV_HAVE_AVX

So everything is undefined.
This means configure does not change anything to volk_config.h.in

However, I have a look at config.h, which shows correct settings

/* 32 flag set */
#define LV_HAVE_32 1

/* 3dnow flag set */
/* #undef LV_HAVE_3DNOW */

/* 64 flag set */
/* #undef LV_HAVE_64 */

/* abm flag set */
/* #undef LV_HAVE_ABM */

/* altivec flag set */
/* #undef LV_HAVE_ALTIVEC */

/* avx flag set */
/* #undef LV_HAVE_AVX */

/* generic flag set */
#define LV_HAVE_GENERIC 1

/* mmx flag set */
#define LV_HAVE_MMX 1

/* popcount flag set */
/* #undef LV_HAVE_POPCOUNT */

/* sse flag set */
#define LV_HAVE_SSE 1

/* sse2 flag set */
#define LV_HAVE_SSE2 1

/* sse3 flag set */
#define LV_HAVE_SSE3 1

/* sse4_1 flag set */
/* #undef LV_HAVE_SSE4_1 */

/* sse4_2 flag set */
/* #undef LV_HAVE_SSE4_2 */

/* sse4_a flag set */
/* #undef LV_HAVE_SSE4_A */

/* ssse3 flag set */
#define LV_HAVE_SSSE3 1


This is strange since configure has done correct testing on SSE support 
but just does not produce volk_config.h correctly.

Kyle