--- a/scripts/phpize.m4	2020-03-17 11:40:21.000000000 +0100
+++ b/scripts/phpize.m4	2020-04-15 12:27:36.400466387 +0200
@@ -44,6 +44,12 @@ PHP_ARG_WITH([libdir],
   [lib],
   [no])
 
+PHP_ARG_WITH([sysroot],,
+  [AS_HELP_STRING([--with-sysroot=NAME],
+    [System sysroot])],
+    [no],
+    [no])
+
 PHP_RUNPATH_SWITCH
 PHP_SHLIB_SUFFIX_NAMES
 
@@ -58,7 +64,11 @@ dnl For BC.
 PHP_CONFIG=$PHP_PHP_CONFIG
 prefix=`$PHP_CONFIG --prefix 2>/dev/null`
 phpincludedir=`$PHP_CONFIG --include-dir 2>/dev/null`
-INCLUDES=`$PHP_CONFIG --includes 2>/dev/null`
+if test "x$PHP_SYSROOT" = xno; then :
+	INCLUDES=`$PHP_CONFIG --includes 2>/dev/null`
+else
+	INCLUDES=`$PHP_CONFIG --includes 2>/dev/null | sed "s#-I#-I$PHP_SYSROOT#g"`
+fi
 EXTENSION_DIR=`$PHP_CONFIG --extension-dir 2>/dev/null`
 PHP_EXECUTABLE=`$PHP_CONFIG --php-binary 2>/dev/null`