Cannot compile 32-bit version (BINARY=32)

[TiborGY]

Trying to compile a 32-bit version of the library on a 64-bit OS (Ubuntu 18.04, GCC 7.3) fails with the following log. Something related to avx512 detection does not work on 32-bit. NO_AVX=1 and NO_AVX2=1 have no effect on this issue.

In file included from getarch.c:1090:0:
cpuid_x86.c: In function ‘support_avx512’:
cpuid_x86.c:242:5: warning: implicit declaration of function ‘xgetbv’; did you mean ‘getwd’? [-Wimplicit-function-declaration]
xgetbv(0, &eax, &edx);
^~~~~~
getwd
/tmp/ccA8ambP.o: In function support_avx512': getarch.c:(.text+0x23c): undefined reference to xgetbv'
collect2: error: ld returned 1 exit status
make: *** [getarch] Error 1

[brada4]

Do you use 32bit gcc or clang with multilib?
There is no AVX possible in 32bit mode at all
What is your CPU?

[martin-frbg]

Can you provide the complete build log please ? The avx512 detection is allowed to fail and should set NO_AVX512=1 in that case.

[TiborGY]

This is the complete build log. The build system fails very early, because it cannot compile getarch.c .

[martin-frbg]

Ah, I see. You have set NO_AVX=1 which removes the definition of xgetbv(). Line 231 of cpuid_x86.c should read if !defined(NO_AVX) && !defined(NO_AVX512) rather than just ifndef NO_AVX512.