diff --git a/include/blt/compatibility.h b/include/blt/compatibility.h
index fe5a97b..b10d4f6 100644
--- a/include/blt/compatibility.h
+++ b/include/blt/compatibility.h
@@ -16,10 +16,20 @@
  *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-#ifndef INSANE_DNS_COMPATIBILITY_H
-#define INSANE_DNS_COMPATIBILITY_H
+#ifndef BLT_COMPATIBILITY_H
+#define BLT_COMPATIBILITY_H
 
-#if __cplusplus >= 202002L
+#define BLT_CPP23 202302L
+#define BLT_CPP20 202002L
+#define BLT_CPP17 201703L
+#define BLT_CPP14 201402L
+#define BLT_CPP11 201103L
+
+#if __cplusplus >= BLT_CPP23
+
+#endif
+
+#if __cplusplus >= BLT_CPP20
     #define BLT_CONTAINS(container, value) container.contains(value)
     #define BLT_CPP20_CONSTEXPR constexpr
     #define BLT_USE_CPP20
@@ -41,4 +51,4 @@
             #error Filesystem ops not supported!\
     #endif
 
-#endif //INSANE_DNS_COMPATIBILITY_H
+#endif //BLT_COMPATIBILITY_H
diff --git a/include/blt/parse/obj_loader.h b/include/blt/parse/obj_loader.h
index 5d2c72d..c86e1bc 100644
--- a/include/blt/parse/obj_loader.h
+++ b/include/blt/parse/obj_loader.h
@@ -24,6 +24,7 @@
 #include <utility>
 #include <vector>
 #include <string_view>
+#include <string>
 
 namespace blt::gfx
 {
diff --git a/include/blt/std/allocator.h b/include/blt/std/allocator.h
index 4a2d517..53eb2cc 100644
--- a/include/blt/std/allocator.h
+++ b/include/blt/std/allocator.h
@@ -30,6 +30,7 @@ namespace blt
     class area_allocator
     {
         public:
+            using value = T;
             using type = T;
             using value_type = type;
             using pointer = type*;
@@ -44,7 +45,7 @@ namespace blt
             template<class U>
             struct rebind
             {
-                typedef std::allocator<U> other;
+                typedef blt::area_allocator<U, BLOCK_SIZE> other;
             };
         private:
             /**
@@ -218,7 +219,7 @@ namespace blt
                 {
                     if (p >= blk->data && p <= (blk->data + BLOCK_SIZE))
                     {
-                        blk->unallocated_blocks.push_back({p, n});
+                        blk->unallocated_blocks.push_back(pointer_view{p, n});
                         break;
                     }
                 }
diff --git a/include/blt/std/utility.h b/include/blt/std/utility.h
index e8f8363..4e9f951 100644
--- a/include/blt/std/utility.h
+++ b/include/blt/std/utility.h
@@ -30,7 +30,7 @@
 
 namespace blt
 {
-    static BLT_CPP20_CONSTEXPR inline std::string demangle(const std::string& str)
+    static inline std::string demangle(const std::string& str)
     {
         int status;
         // only defined for GNU C++11?
@@ -45,7 +45,7 @@ namespace blt
 #else
 namespace blt
 {
-    static BLT_CPP20_CONSTEXPR inline std::string demangle(const std::string& str)
+    static inline std::string demangle(const std::string& str)
     {
         return str;
     }