diff options
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 43 |
1 files changed, 24 insertions, 19 deletions
diff --git a/configure b/configure index 6b52e19ee3..987f59ba88 100755 --- a/configure +++ b/configure @@ -358,6 +358,7 @@ libusb="" usb_redir="" opengl="" opengl_dmabuf="no" +cpuid_h="no" avx2_opt="no" zlib="yes" lzo="" @@ -1931,24 +1932,6 @@ EOF fi fi -########################################## -# avx2 optimization requirement check - -cat > $TMPC << EOF -#pragma GCC push_options -#pragma GCC target("avx2") -#include <cpuid.h> -#include <immintrin.h> -static int bar(void *a) { - __m256i x = *(__m256i *)a; - return _mm256_testz_si256(x, x); -} -int main(int argc, char *argv[]) { return bar(argv[0]); } -EOF -if compile_object "" ; then - avx2_opt="yes" -fi - ######################################### # zlib check @@ -4646,7 +4629,6 @@ fi ######################################## # check if cpuid.h is usable. -cpuid_h=no cat > $TMPC << EOF #include <cpuid.h> int main(void) { @@ -4668,6 +4650,29 @@ if compile_prog "" "" ; then cpuid_h=yes fi +########################################## +# avx2 optimization requirement check +# +# There is no point enabling this if cpuid.h is not usable, +# since we won't be able to select the new routines. + +if test $cpuid_h = yes; then + cat > $TMPC << EOF +#pragma GCC push_options +#pragma GCC target("avx2") +#include <cpuid.h> +#include <immintrin.h> +static int bar(void *a) { + __m256i x = *(__m256i *)a; + return _mm256_testz_si256(x, x); +} +int main(int argc, char *argv[]) { return bar(argv[0]); } +EOF + if compile_object "" ; then + avx2_opt="yes" + fi +fi + ######################################## # check if __[u]int128_t is usable. |