--- php/configure.ac	2020-09-09 11:43:11.885354027 +0200
+++ php/configure.ac	2020-09-09 11:43:44.893273503 +0200
@@ -720,12 +720,6 @@
   PHP_CRYPT_R_STYLE
 fi
 
-AC_CACHE_CHECK([for aarch64 CRC32 API], ac_cv_func___crc32d,
-[AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <arm_acle.h>]],[[__crc32d(0, 0);]])],[ac_cv_func___crc32d=yes],[ac_cv_func___crc32d="no"])])
-if test "$ac_cv_func___crc32d" = "yes"; then
-  AC_DEFINE([HAVE_AARCH64_CRC32], [1], [Define when aarch64 CRC32 API is available.])
-fi
-
 dnl Check for asm goto support.
 AC_CACHE_CHECK([for asm goto], ac_cv__asm_goto,
 [AC_RUN_IFELSE([AC_LANG_SOURCE([[