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Add support for elf_aux_info() on OpenBSD #1834

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Add support for elf_aux_info() on OpenBSD #1834

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2 changes: 1 addition & 1 deletion configure.ac
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Original file line number Diff line number Diff line change
Expand Up @@ -326,7 +326,7 @@ HTS_HIDE_DYNAMIC_SYMBOLS

dnl FIXME This pulls in dozens of standard header checks
AC_FUNC_MMAP
AC_CHECK_FUNCS([gmtime_r fsync drand48 srand48_deterministic])
AC_CHECK_FUNCS([gmtime_r fsync drand48 srand48_deterministic elf_aux_info])

# Darwin has a dubious fdatasync() symbol, but no declaration in <unistd.h>
AC_CHECK_DECL([fdatasync(int)], [AC_CHECK_FUNCS(fdatasync)])
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6 changes: 3 additions & 3 deletions simd.c
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Expand Up @@ -42,7 +42,7 @@ DEALINGS IN THE SOFTWARE. */

#if defined __arm__ || defined __aarch64__

#if defined __linux__ || defined __FreeBSD__
#if defined __linux__ || defined HAVE_ELF_AUX_INFO
#include <sys/auxv.h>
#elif defined __APPLE__
#include <sys/types.h>
Expand Down Expand Up @@ -73,11 +73,11 @@ static inline int cpu_supports_neon(void) {
if (sysctlbyname("hw.optional.AdvSIMD", &ctl, &ctlsize, NULL, 0) != 0) return 0;
if (ctlsize != sizeof ctl) return 0;
return ctl;
#elif defined __FreeBSD__ && defined __arm__ && defined HWCAP_NEON
#elif defined HAVE_ELF_AUX_INFO && defined __arm__ && defined HWCAP_NEON
unsigned long cap;
if (elf_aux_info(AT_HWCAP, &cap, sizeof cap) != 0) return 0;
return (cap & HWCAP_NEON) != 0;
#elif defined __FreeBSD__ && defined __aarch64__ && defined HWCAP_ASIMD
#elif defined HAVE_ELF_AUX_INFO && defined __aarch64__ && defined HWCAP_ASIMD
unsigned long cap;
if (elf_aux_info(AT_HWCAP, &cap, sizeof cap) != 0) return 0;
return (cap & HWCAP_ASIMD) != 0;
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