diff --git a/src/base/base_core.h b/src/base/base_core.h
index 1c273c42..85d5cbf6 100644
--- a/src/base/base_core.h
+++ b/src/base/base_core.h
@@ -1,52 +1,40 @@
-/* TODO: Remove this */
-#define RtcIsEnabled 1
-#define UnoptimizedIsEnabled 1
-#define AsanIsEnabled 0
-#define CrtlibIsEnabled 1
-#define DebinfoEnabled 1
-#define DeveloperIsEnabled 1
-#define ProfilingIsEnabled 0
-#define UnoptimizedIsEnabled 1
-#define TestsAreEnabled 0
-
 ////////////////////////////////
-//~ Compiler feature flags
+//~ Compiler flag checks
 
-/* Compile definition defaults */
 #ifndef RtcIsEnabled
-# define RtcIsEnabled 0
+# error Missing compile time definition for 'RtcIsEnabled'
 #endif
 
 #ifndef AsanIsEnabled
-# define AsanIsEnabled 0
+# error Missing compile time definition for 'AsanIsEnabled'
 #endif
 
 #ifndef CrtlibIsEnabled
-# define CrtlibIsEnabled 0
+# error Missing compile time definition for 'CrtlibIsEnabled'
 #endif
 
 #ifndef DebinfoEnabled
-# define DebinfoEnabled 0
+# error Missing compile time definition for 'DebinfoEnabled'
 #endif
 
 #ifndef DeveloperIsEnabled
-# define DeveloperIsEnabled 0
+# error Missing compile time definition for 'DeveloperIsEnabled'
 #endif
 
 #ifndef ProfilingIsEnabled
-# define ProfilingIsEnabled 0
+# error Missing compile time definition for 'ProfilingIsEnabled'
 #endif
 
 #ifndef UnoptimizedIsEnabled
-# define UnoptimizedIsEnabled 0
+# error Missing compile time definition for 'UnoptimizedIsEnabled'
 #endif
 
 #ifndef TestsAreEnabled
-# define TestsAreEnabled 0
+# error Missing compile time definition for 'TestsAreEnabled'
 #endif
 
 #ifndef IncbinRawDir
-# define IncbinDir ""
+# error Missing compile time definition for 'IncbinRawDir'
 #else
 # define IncbinDir Stringize(IncbinRawDir)
 #endif
@@ -74,7 +62,7 @@
 # define LanguageIsGpu 0
 #endif
 
-//- Operating system
+//- Platform system
 #if defined(_WIN32)
 # define PlatformIsWindows 1
 # define PlatformIsMac 0
@@ -535,7 +523,7 @@ StaticAssert(sizeof(Atomic32Padded) == 64 && alignof(Atomic32Padded) == 64);
 StaticAssert(sizeof(Atomic64Padded) == 64 && alignof(Atomic64Padded) == 64);
 
 #if PlatformIsWindows
-//- 8 bit atomics operations
+//- 8 bit atomic operations
 ForceInline i8 Atomic8Fetch(Atomic8 *x) { return (i8)_InterlockedCompareExchange8((char *)&x->_v, 0, 0); }
 ForceInline i8 Atomic8FetchSet(Atomic8 *x, i8 e) { return (i8)_InterlockedExchange8((char *)&x->_v, e); }
 ForceInline i8 Atomic8FetchTestSet(Atomic8 *x, i8 c, i8 e) { return (i8)_InterlockedCompareExchange8((char *)&x->_v, e, c); }
@@ -569,7 +557,6 @@ ForceInline i64 Atomic64FetchAdd(Atomic64 *x, i64 a) { return (i64)_InterlockedE
 //~ Ticket mutex
 
 #if LanguageIsC
-
 Struct(TicketMutex)
 {
     Atomic64Padded ticket;
diff --git a/src/base/base_math.c b/src/base/base_math.c
index f77d0625..12dac9f4 100644
--- a/src/base/base_math.c
+++ b/src/base/base_math.c
@@ -210,7 +210,8 @@ u64 PowU64(u64 base, u8 exp)
             {
                 return 1;
             }
-            // if (base == -1) {
+            // if (base == -1)
+            // {
             //     return 1 - 2 * (exp & 1);
             // }
             return 0;
diff --git a/src/base/base_string.c b/src/base/base_string.c
index e1c5d9eb..5838c6d0 100644
--- a/src/base/base_string.c
+++ b/src/base/base_string.c
@@ -453,7 +453,7 @@ StringListNode *PushStringToList(Arena *arena, StringList *l, String s)
     return n;
 }
 
-String StringFromStringList(Arena *arena, StringList l, String separator)
+String StringFromList(Arena *arena, StringList l, String separator)
 {
     String result = ZI;
     result.text = PushDry(arena, u8);
@@ -471,6 +471,34 @@ String StringFromStringList(Arena *arena, StringList l, String separator)
     return result;
 }
 
+////////////////////////////////
+//~ Trimming helpers
+
+String TrimLeft(String s, String pattern)
+{
+    String result = s;
+    while (StringStartsWith(result, pattern))
+    {
+        result.text += pattern.len;
+    }
+    return result;
+}
+
+String TrimRight(String s, String pattern)
+{
+    String result = s;
+    while (StringEndsWith(result, pattern))
+    {
+        result.len -= pattern.len;
+    }
+    return result;
+}
+
+String Trim(String s, String pattern)
+{
+    return TrimLeft(TrimRight(s, pattern), pattern);
+}
+
 ////////////////////////////////
 //~ Formatting
 
diff --git a/src/base/base_string.h b/src/base/base_string.h
index f8f43367..2f7e4f62 100644
--- a/src/base/base_string.h
+++ b/src/base/base_string.h
@@ -103,11 +103,18 @@ b32 StringContains(String str, String substring);
 b32 StringStartsWith(String str, String substring);
 b32 StringEndsWith(String str, String substring);
 
+////////////////////////////////
+//~ Trimming helpers
+
+String TrimLeft(String s, String pattern);
+String TrimRight(String s, String pattern);
+String Trim(String s, String pattern);
+
 ////////////////////////////////
 //~ String list helpers
 
 StringListNode *PushStringToList(Arena *arena, StringList *l, String s);
-String StringFromStringList(Arena *arena, StringList l, String separator);
+String StringFromList(Arena *arena, StringList l, String separator);
 
 ////////////////////////////////
 //~ Formatting
diff --git a/src/base/base_uid.h b/src/base/base_uid.h
index 3048525d..25f462af 100644
--- a/src/base/base_uid.h
+++ b/src/base/base_uid.h
@@ -1,7 +1,8 @@
 ////////////////////////////////
 //~ Uid types
 
-Struct(Uid) {
+Struct(Uid)
+{
     u64 hi;
     u64 lo;
 };
diff --git a/src/meta/meta.c b/src/meta/meta.c
index a12c6499..46535744 100644
--- a/src/meta/meta.c
+++ b/src/meta/meta.c
@@ -1,5 +1,44 @@
 /* TODO: Move decls to meta.h */
 
+////////////////////////////////
+//~ Metaprogram default compiler definitions
+
+#ifndef RtcIsEnabled
+# define RtcIsEnabled 1
+#endif
+
+#ifndef UnoptimizedIsEnabled
+# define UnoptimizedIsEnabled 1
+#endif
+
+#ifndef AsanIsEnabled
+# define AsanIsEnabled 0
+#endif
+
+#ifndef CrtlibIsEnabled
+# define CrtlibIsEnabled 1
+#endif
+
+#ifndef DebinfoEnabled
+# define DebinfoEnabled 1
+#endif
+
+#ifndef DeveloperIsEnabled
+# define DeveloperIsEnabled 1
+#endif
+
+#ifndef ProfilingIsEnabled
+# define ProfilingIsEnabled 0
+#endif
+
+#ifndef UnoptimizedIsEnabled
+# define UnoptimizedIsEnabled 1
+#endif
+
+#ifndef TestsAreEnabled
+# define TestsAreEnabled 0
+#endif
+
 ////////////////////////////////
 //~ Includes
 
@@ -427,6 +466,7 @@ Struct(L_TopoItemList)
 Struct(L_Topo)
 {
     L_TopoItemList c_includes;
+    L_TopoItemList startup_functions;
     L_TopoItemList errors;
 };
 
@@ -522,7 +562,7 @@ L_Topo L_TopoFromLayerName(Arena *arena, StringList starting_layer_names, String
                             if (cycle->blob->names.count > 0) name = cycle->blob->names.first->s;
                             PushStringToList(scratch.arena, &cycle_names_list, name);
                         }
-                        String cycle_names_str = StringFromStringList(scratch.arena, cycle_names_list, Lit(" -> "));
+                        String cycle_names_str = StringFromList(scratch.arena, cycle_names_list, Lit(" -> "));
                         String name = ZI;
                         String token_file = ZI;
                         i64 token_pos = 0;
@@ -618,6 +658,13 @@ L_Topo L_TopoFromLayerName(Arena *arena, StringList starting_layer_names, String
     for (Node *n = first_post; n; n = n->next)
     {
         L_Blob *blob = n->blob;
+        /* Errors */
+        for (L_BlobItem *bitem = blob->errors.first; bitem; bitem = bitem->next)
+        {
+            String file = PushString(arena, bitem->token_file);
+            String s = PushString(arena, bitem->s);
+            L_PushTopoItem(arena, &result.errors, file, bitem->token_pos, s);
+        }
         /* C includes */
         for (L_BlobItem *bitem = blob->c_includes.first; bitem; bitem = bitem->next)
         {
@@ -625,12 +672,12 @@ L_Topo L_TopoFromLayerName(Arena *arena, StringList starting_layer_names, String
             String s = PushString(arena, bitem->s);
             L_PushTopoItem(arena, &result.c_includes, file, bitem->token_pos, s);
         }
-        /* Errors */
-        for (L_BlobItem *bitem = blob->errors.first; bitem; bitem = bitem->next)
+        /* Startup funcs */
+        for (L_BlobItem *bitem = blob->startup_functions.first; bitem; bitem = bitem->next)
         {
             String file = PushString(arena, bitem->token_file);
             String s = PushString(arena, bitem->s);
-            L_PushTopoItem(arena, &result.errors, file, bitem->token_pos, s);
+            L_PushTopoItem(arena, &result.startup_functions, file, bitem->token_pos, s);
         }
     }
 
@@ -747,7 +794,7 @@ i32 main(i32 argc, u8 **argv)
     L_Topo topo = L_TopoFromLayerName(arena, starting_layer_names, src_dirs);
 
     //- Process topo errors
-    if (errors.count <= 0 && topo.errors.count > 0)
+    if (topo.errors.count > 0)
     {
         StringList topo_errors = ZI;
         u64 max_topo_errors = 50;
@@ -761,28 +808,48 @@ i32 main(i32 argc, u8 **argv)
     if (errors.count <= 0)
     {
         StringList c_out_lines = ZI;
-        PushStringToList(arena, &c_out_lines, Lit("// Auto generated file"));
-        for (L_TopoItem *item = topo.c_includes.first; item; item = item->next)
+        /* Includes */
         {
-            String parent = F_GetParentDir(item->token_file);
-            String file = StringF(arena, "%F%F", FmtString(parent), FmtString(item->s));
-            if (F_IsFile(file))
+            PushStringToList(arena, &c_out_lines, Lit("// Auto generated file"));
+            PushStringToList(arena, &c_out_lines, Lit(""));
+            PushStringToList(arena, &c_out_lines, Lit("//- Includes"));
+            for (L_TopoItem *item = topo.c_includes.first; item; item = item->next)
             {
-                String full = F_GetFull(arena, file);
-                String line = StringF(arena, "#include \"%F\"", FmtString(full));
-                PushStringToList(arena, &c_out_lines, line);
-            }
-            else
-            {
-                String e = StringF(arena, "File '%F' not found", FmtString(file));
-                PushError(arena, &errors, item->token_file, item->token_pos, e);
+                String parent = F_GetParentDir(item->token_file);
+                String file = StringF(arena, "%F%F", FmtString(parent), FmtString(item->s));
+                if (F_IsFile(file))
+                {
+                    String full = F_GetFull(arena, file);
+                    String line = StringF(arena, "#include \"%F\"", FmtString(full));
+                    PushStringToList(arena, &c_out_lines, line);
+                }
+                else
+                {
+                    String e = StringF(arena, "File '%F' not found", FmtString(file));
+                    PushError(arena, &errors, item->token_file, item->token_pos, e);
+                }
             }
         }
-        String c_out = StringFromStringList(arena, c_out_lines, Lit("\n"));
+        /* StartupLayers definition */
+        {
+            PushStringToList(arena, &c_out_lines, Lit(""));
+            PushStringToList(arena, &c_out_lines, Lit("//- Startup"));
+            PushStringToList(arena, &c_out_lines, Lit("void StartupLayers(void)"));
+            PushStringToList(arena, &c_out_lines, Lit("{"));
+            for (L_TopoItem *item = topo.startup_functions.first; item; item = item->next)
+            {
+                String line = StringF(arena, "    %F();", FmtString(item->s));
+                PushStringToList(arena, &c_out_lines, line);
+            }
+            PushStringToList(arena, &c_out_lines, Lit("}"));
+            PushStringToList(arena, &c_out_lines, Lit(""));
+        }
+        /* Write to file */
+        String c_out = StringFromList(arena, c_out_lines, Lit("\n"));
         F_ClearWrite(Lit("gen.c"), c_out);
     }
 
-    //- Print errors
+    //- Echo meta errors
     for (Error *e = errors.first; e; e = e->next)
     {
         String s = e->s;
@@ -801,26 +868,56 @@ i32 main(i32 argc, u8 **argv)
         }
         else
         {
-            error = StringF(arena,
-                            "error: %F",
-                            FmtString(s));
+            error = StringF(arena, "error: %F", FmtString(s));
         }
         Echo(error);
     }
 
-    //- Compile
-    if (ret == 0) {
-        String cmd = Lit("\"cl\" /Zi /DEBUG gen.c /Fo:gen.obj /Fe:pp.exe /nologo");
+    //- Generate compiler flags
+    StringList shared_compiler_flags = ZI;
+    StringList msvc_compiler_flags = ZI;
+    {
+        /* Definitions */
+        PushStringToList(arena, &shared_compiler_flags, Lit("DRtcIsEnabled=1"));
+        PushStringToList(arena, &shared_compiler_flags, Lit("DAsanIsEnabled=0"));
+        PushStringToList(arena, &shared_compiler_flags, Lit("DCrtlibIsEnabled=1"));
+        PushStringToList(arena, &shared_compiler_flags, Lit("DDebinfoEnabled=1"));
+        PushStringToList(arena, &shared_compiler_flags, Lit("DDeveloperIsEnabled=1"));
+        PushStringToList(arena, &shared_compiler_flags, Lit("DProfilingIsEnabled=0"));
+        PushStringToList(arena, &shared_compiler_flags, Lit("DUnoptimizedIsEnabled=1"));
+        PushStringToList(arena, &shared_compiler_flags, Lit("DTestsAreEnabled=0"));
+        PushStringToList(arena, &shared_compiler_flags, Lit("DIncbinRawDir=\"bla\""));
 
-        OS_CommandResult result = OS_RunCommand(arena, cmd);
-        if (result.code == 0)
-        {
-        }
-        else
-        {
-            ret = result.code;
-        }
-        Echo(result.output);
+        /* Msvc flags */
+        PushStringToList(arena, &msvc_compiler_flags, Lit("Zi"));
+        PushStringToList(arena, &msvc_compiler_flags, Lit("DEBUG"));
+        PushStringToList(arena, &msvc_compiler_flags, Lit("Fo:gen.obj"));
+        PushStringToList(arena, &msvc_compiler_flags, Lit("Fe:pp.exe"));
+        PushStringToList(arena, &msvc_compiler_flags, Lit("nologo"));
+    }
+
+    //- Generate compiler cmds
+    String msvc_cmd_str = ZI;
+    {
+        String flags_str = StringF(arena,
+                                   "/%F /%F",
+                                   FmtString(StringFromList(arena, shared_compiler_flags, Lit(" /"))),
+                                   FmtString(StringFromList(arena, msvc_compiler_flags, Lit(" /")))
+                                   );
+        msvc_cmd_str = StringF(arena, "\"cl\" gen.c %F", FmtString(flags_str));
+    }
+
+    //- Compile C
+    if (ret == 0)
+    {
+        String cmd_str = msvc_cmd_str;
+        OS_CommandResult result = OS_RunCommand(arena, cmd_str);
+        ret = result.code;
+        String output = result.output;
+        output = Trim(output, Lit("\n"));
+        output = Trim(output, Lit("\r"));
+        output = Trim(output, Lit("\n"));
+        Echo(output);
     }
 
     return ret != 0 ? ret : errors.count > 0;
diff --git a/src/meta/meta_base/meta_base.h b/src/meta/meta_base/meta_base.h
index 5da28392..0a365fe6 100644
--- a/src/meta/meta_base/meta_base.h
+++ b/src/meta/meta_base/meta_base.h
@@ -528,7 +528,7 @@ StaticAssert(sizeof(Atomic32Padded) == 64 && alignof(Atomic32Padded) == 64);
 StaticAssert(sizeof(Atomic64Padded) == 64 && alignof(Atomic64Padded) == 64);
 
 #if PlatformIsWindows
-//- 8 bit atomics operations
+//- 8 bit atomic operations
 ForceInline i8 Atomic8Fetch(Atomic8 *x) { return (i8)_InterlockedCompareExchange8((char *)&x->_v, 0, 0); }
 ForceInline i8 Atomic8FetchSet(Atomic8 *x, i8 e) { return (i8)_InterlockedExchange8((char *)&x->_v, e); }
 ForceInline i8 Atomic8FetchTestSet(Atomic8 *x, i8 c, i8 e) { return (i8)_InterlockedCompareExchange8((char *)&x->_v, e, c); }
diff --git a/src/meta/meta_base/meta_base_string.c b/src/meta/meta_base/meta_base_string.c
index e1c5d9eb..5838c6d0 100644
--- a/src/meta/meta_base/meta_base_string.c
+++ b/src/meta/meta_base/meta_base_string.c
@@ -453,7 +453,7 @@ StringListNode *PushStringToList(Arena *arena, StringList *l, String s)
     return n;
 }
 
-String StringFromStringList(Arena *arena, StringList l, String separator)
+String StringFromList(Arena *arena, StringList l, String separator)
 {
     String result = ZI;
     result.text = PushDry(arena, u8);
@@ -471,6 +471,34 @@ String StringFromStringList(Arena *arena, StringList l, String separator)
     return result;
 }
 
+////////////////////////////////
+//~ Trimming helpers
+
+String TrimLeft(String s, String pattern)
+{
+    String result = s;
+    while (StringStartsWith(result, pattern))
+    {
+        result.text += pattern.len;
+    }
+    return result;
+}
+
+String TrimRight(String s, String pattern)
+{
+    String result = s;
+    while (StringEndsWith(result, pattern))
+    {
+        result.len -= pattern.len;
+    }
+    return result;
+}
+
+String Trim(String s, String pattern)
+{
+    return TrimLeft(TrimRight(s, pattern), pattern);
+}
+
 ////////////////////////////////
 //~ Formatting
 
diff --git a/src/meta/meta_base/meta_base_string.h b/src/meta/meta_base/meta_base_string.h
index 9a4db4e4..71d413ed 100644
--- a/src/meta/meta_base/meta_base_string.h
+++ b/src/meta/meta_base/meta_base_string.h
@@ -100,7 +100,14 @@ b32 StringEndsWith(String str, String substring);
 //~ String list helpers
 
 StringListNode *PushStringToList(Arena *arena, StringList *l, String s);
-String StringFromStringList(Arena *arena, StringList l, String separator);
+String StringFromList(Arena *arena, StringList l, String separator);
+
+////////////////////////////////
+//~ Trimming helpers
+
+String TrimLeft(String s, String pattern);
+String TrimRight(String s, String pattern);
+String Trim(String s, String pattern);
 
 ////////////////////////////////
 //~ Formatting
diff --git a/src/platform/platform_log.c b/src/platform/platform_log.c
index d237cf81..05a69308 100644
--- a/src/platform/platform_log.c
+++ b/src/platform/platform_log.c
@@ -6,9 +6,11 @@ P_SharedLogState P_shared_log_state = ZI;
 ////////////////////////////////
 //~ Startup
 
-void P_StartupLog(String logfile_path)
+void P_StartupLog(void)
 {
     __prof;
+    /* FIXME: Remove hardcode */
+    String logfile_path = Lit("log.log");
     P_SharedLogState *ctx = &P_shared_log_state;
     ctx->callbacks_arena = AcquireArena(Mebi(8));
     if (logfile_path.len > 0)
diff --git a/src/platform/platform_log.h b/src/platform/platform_log.h
index 34b0cfd9..3e4b4313 100644
--- a/src/platform/platform_log.h
+++ b/src/platform/platform_log.h
@@ -116,7 +116,7 @@ Global Readonly P_LogLevelSettings P_log_settings[P_LogLevel_Count] = {
 ////////////////////////////////
 //~ Startup
 
-void P_StartupLog(String logfile_path);
+void P_StartupLog(void);
 
 ////////////////////////////////
 //~ Logging macros