Compile error on Raspbian "Buster"

[dl9sec]

Hi,

i tried to build the latest freedv on an Raspberry Pi 3 on Raspbian "Buster".
Codec2 and LPCNet seems to build well, but when compiling freedv-gui, the build process stops at about 25% with the following error:

/home/pi/projects/freedv-gui/src/fdmdv2_main.cpp: In function ‘void __cpuid(int*, int)’:
/home/pi/projects/freedv-gui/src/fdmdv2_main.cpp:4490:6: error: impossible constraint in ‘asm’
     );
      ^
make[2]: *** [src/CMakeFiles/freedv.dir/build.make:128: src/CMakeFiles/freedv.dir/fdmdv2_main.cpp.o] Fehler 1

Maybe this part of code isn't supported on ARM targets.

Any solutions how to solve?

Thanks in advance.

Regards, Thorsten

[ghost]

Try something like this: ``` #if defined(__x86_64__) // checkAvxSupport // // Tests the underlying platform for AVX support. 2020 needs AVX support to run // in real-time, and old processors do not offer AVX support // void __cpuid(int* cpuinfo, int info) { __asm__ __volatile__( "xchg %%ebx, %%edi;" "cpuid;" "xchg %%ebx, %%edi;" :"=a" (cpuinfo[0]), "=D" (cpuinfo[1]), "=c" (cpuinfo[2]), "=d" (cpuinfo[3]) :"0" (info) ); } // These methods are defined for Windows but must be created otherwise unsigned long long __xgetbv(unsigned int index) { unsigned int eax, edx; __asm__ __volatile__( "xgetbv;" : "=a" (eax), "=d"(edx) : "c" (index) ); return ((unsigned long long)edx << 32) | eax; } void MainFrame::checkAvxSupport(void) { int cpuinfo[4]; __cpuid(cpuinfo, 1); bool avxSupported = false; avxSupported = cpuinfo[2] & (1 << 28) || false; bool osxsaveSupported = cpuinfo[2] & (1 << 27) || false; if (osxsaveSupported && avxSupported) { // _XCR_XFEATURE_ENABLED_MASK = 0 unsigned long long xcrFeatureMask = __xgetbv(0); avxSupported = (xcrFeatureMask & 0x6) == 0x6; } isAvxPresent = false; } #else void MainFrame::checkAvxSupport(void) { isAvxPresent = false; } #endif ```

[dl9sec]

Great stuff!
Thank you very much, builds like a charm now :-D

Regards, Thorsten