diff -Nru postgis-3.3.2-orig/configure.ac postgis-3.3.2/configure.ac
--- postgis-3.3.2-orig/configure.ac	2023-05-11 11:00:42.013655079 -0300
+++ postgis-3.3.2/configure.ac	2023-05-11 11:25:43.422119442 -0300
@@ -1589,7 +1589,7 @@
     LIBS=""
     CXX="$WAGYU_CXX"
     AC_PROG_CXX
-    AX_CXX_COMPILE_STDCXX(11, noext, mandatory)
+    AX_CXX_COMPILE_STDCXX(17, noext, mandatory)
     WAGYU_CXX="$CXX -x c++"
 
     dnl ============================================================
@@ -1662,7 +1662,7 @@
 LIBS=""
 CXX="$FLATGEOBUF_CXX"
 AC_PROG_CXX
-AX_CXX_COMPILE_STDCXX(11, noext, mandatory)
+AX_CXX_COMPILE_STDCXX(17, noext, mandatory)
 FLATGEOBUF_CXX="$CXX -x c++"
 
 dnl ============================================================