--- a/ext/gd/config.m4
+++ b/ext/gd/config.m4
@@ -154,7 +154,7 @@ LIBS="${LIBS} ${GD_SHARED_LIBADD}"
 old_CFLAGS="${CFLAGS}"
 CFLAGS="${CFLAGS} ${GDLIB_CFLAGS}"
 AC_LANG_PUSH([C])
-AC_CACHE_CHECK([for working gdImageCreateFrom$1 in libgd], [php_var],
+AC_CACHE_CHECK([for working gdImageCreateFrom$1 in libgd (OpenWrt build config based)], [php_var],
   [AC_RUN_IFELSE([AC_LANG_SOURCE([
 #include <stdio.h>
 #include <unistd.h>
@@ -177,7 +177,7 @@ int main(int argc, char** argv) {
 }])],
   [AS_VAR_SET([php_var], [yes])],
   [AS_VAR_SET([php_var], [no])],
-  [AS_VAR_SET([php_var], [no])])])
+  [AS_VAR_SET([php_var], [$3])])])
 AS_VAR_IF([php_var], [yes], [$2])
 AC_LANG_POP([C])
 CFLAGS="${old_CFLAGS}"
@@ -186,13 +186,13 @@ AS_VAR_POPDEF([php_var])
 ])
 
 AC_DEFUN([PHP_GD_CHECK_VERSION],[
-  PHP_GD_CHECK_FORMAT([Png],  [AC_DEFINE([HAVE_GD_PNG], [1])])
-  PHP_GD_CHECK_FORMAT([Avif], [AC_DEFINE([HAVE_GD_AVIF], [1])])
-  PHP_GD_CHECK_FORMAT([Webp], [AC_DEFINE([HAVE_GD_WEBP], [1])])
-  PHP_GD_CHECK_FORMAT([Jpeg], [AC_DEFINE([HAVE_GD_JPG], [1])])
-  PHP_GD_CHECK_FORMAT([Xpm],  [AC_DEFINE([HAVE_GD_XPM], [1])])
-  PHP_GD_CHECK_FORMAT([Bmp],  [AC_DEFINE([HAVE_GD_BMP], [1])])
-  PHP_GD_CHECK_FORMAT([Tga],  [AC_DEFINE([HAVE_GD_TGA], [1])])
+  PHP_GD_CHECK_FORMAT([Png],  [AC_DEFINE([HAVE_GD_PNG], [1])],  [yes])
+  PHP_GD_CHECK_FORMAT([Avif], [AC_DEFINE([HAVE_GD_AVIF], [1])], [no])
+  PHP_GD_CHECK_FORMAT([Webp], [AC_DEFINE([HAVE_GD_WEBP], [1])], [yes])
+  PHP_GD_CHECK_FORMAT([Jpeg], [AC_DEFINE([HAVE_GD_JPG], [1])],  [yes])
+  PHP_GD_CHECK_FORMAT([Xpm],  [AC_DEFINE([HAVE_GD_XPM], [1])],  [no])
+  PHP_GD_CHECK_FORMAT([Bmp],  [AC_DEFINE([HAVE_GD_BMP], [1])],  [no])
+  PHP_GD_CHECK_FORMAT([Tga],  [AC_DEFINE([HAVE_GD_TGA], [1])],  [no])
   PHP_CHECK_LIBRARY([gd], [gdFontCacheShutdown],
     [AC_DEFINE([HAVE_GD_FREETYPE], [1])],
     [],