diff --git a/NEWS b/NEWS
index a84c8dd8f2c..c6c380efef1 100644
--- a/NEWS
+++ b/NEWS
@@ -2,6 +2,9 @@ PHP                                                                        NEWS
 |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 ?? ??? ????, PHP 8.1.0alpha2
 
+- Opcache:
+  . Fixed bug #81133 (building opcache with phpize fails). (krakjoe)
+
 - PDO OCI:
   . Fixed bug #77120 (Support 'success with info' at connection).
     (Sergei Morozov)
diff --git a/scripts/phpize.m4 b/scripts/phpize.m4
index cdd0e12989c..1f0cbd70eb0 100644
--- a/scripts/phpize.m4
+++ b/scripts/phpize.m4
@@ -170,6 +170,14 @@ CXXFLAGS_CLEAN='$(CXXFLAGS)'
 test "$prefix" = "NONE" && prefix="/usr/local"
 test "$exec_prefix" = "NONE" && exec_prefix='$(prefix)'
 
+if test "$cross_compiling" = yes ; then
+  AC_MSG_CHECKING(for native build C compiler)
+  AC_CHECK_PROGS(BUILD_CC, [gcc clang c99 c89 cc cl],none)
+  AC_MSG_RESULT($BUILD_CC)
+else
+  BUILD_CC=$CC
+fi
+
 PHP_SUBST(PHP_MODULES)
 PHP_SUBST(PHP_ZEND_EX)
 
@@ -202,6 +210,7 @@ PHP_SUBST(SHARED_LIBTOOL)
 PHP_SUBST(LIBTOOL)
 PHP_SUBST(SHELL)
 PHP_SUBST(INSTALL_HEADERS)
+PHP_SUBST(BUILD_CC)
 
 PHP_GEN_BUILD_DIRS
 PHP_GEN_GLOBAL_MAKEFILE