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Merge b1e48789d6 into 3b7c70e34d

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Jan Palus 2025-05-26 10:14:18 +02:00 committed by GitHub
commit 7398c84057
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1 changed files with 14 additions and 4 deletions
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18
configure.ac
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@ -177,10 +177,20 @@ case "${host_cpu}" in
;;
arm*)
AX_CHECK_COMPILE_FLAG([-mfpu=neon], [neon=true], [neon=false], [$WERROR])
AM_CONDITIONAL([HAVE_NEON], $neon)
if $neon; then
SAVE_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="-mfpu=neon $CXXFLAGS"
AC_MSG_CHECKING([for NEON support])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([], [[
#ifndef __ARM_NEON
#error
#endif
]])],
[neon=yes], [neon=no])
AC_MSG_RESULT([$neon])
CXXFLAGS="$SAVE_CXXFLAGS"
AM_CONDITIONAL([HAVE_NEON], test "xyes" = "x$neon")
if test "xyes" = "$neon"; then
AC_DEFINE([HAVE_NEON], [1], [Enable NEON instructions])
NEON_CXXFLAGS="-mfpu=neon"
AC_SUBST([NEON_CXXFLAGS])