diff --git a/Makefile b/Makefile
index cdb1b548..6ac8f072 100644
--- a/Makefile
+++ b/Makefile
@@ -49,43 +49,16 @@ else
 endif
 
 # Source headers
-JANET_GENERATED_HEADERS= \
-	src/include/generated/core.h \
- 	src/include/generated/init.h
 JANET_HEADERS=$(sort $(wildcard src/include/janet/*.h))
 JANET_LOCAL_HEADERS=$(sort $(wildcard src/*/*.h))
 
 # Source files
-JANET_CORE_SOURCES=$(sort $(wildcard src/core/*.c))
-JANET_MAINCLIENT_SOURCES=$(sort $(wildcard src/mainclient/*.c))
-JANET_WEBCLIENT_SOURCES=$(sort $(wildcard src/webclient/*.c))
+JANET_CORE_SOURCES=$(sort $(wildcard src/core/*.c)) src/core/core.gen.c
+JANET_MAINCLIENT_SOURCES=$(sort $(wildcard src/mainclient/*.c)) src/mainclient/init.gen.c
+JANET_WEBCLIENT_SOURCES=$(sort $(wildcard src/webclient/*.c)) src/webclient/webinit.gen.c
 
 all: $(JANET_TARGET) $(JANET_LIBRARY)
 
-###################################
-##### The code generator tool #####
-###################################
-
-xxd: src/tools/xxd.c
-	$(CC) $< -o $@
-
-#############################
-##### Generated Headers #####
-#############################
-
-src/include/generated/init.h: src/mainclient/init.janet xxd
-	./xxd $< $@ janet_gen_init 
-
-src/include/generated/webinit.h: src/webclient/webinit.janet xxd
-	./xxd $< $@ janet_gen_webinit 
-
-src/include/generated/core.h: src/core/core.janet xxd
-	./xxd $< $@ janet_gen_core
-
-# Only a few files depend on the generated headers
-src/core/corelib.o: src/include/generated/core.h
-src/mainclient/main.o: src/include/generated/init.h
-
 ##########################################################
 ##### The main interpreter program and shared object #####
 ##########################################################
@@ -119,16 +92,22 @@ JANET_EMTARGET=janet.js
 JANET_WEB_SOURCES=$(JANET_CORE_SOURCES) $(JANET_WEBCLIENT_SOURCES)
 JANET_EMOBJECTS=$(patsubst %.c,%.bc,$(JANET_WEB_SOURCES))
 
-# Only a few files depend on generated headers
-src/core/corelib.bc: src/include/generated/core.h
-src/webclient/main.bc: src/include/generated/webinit.h
-
 %.bc: %.c $(JANET_HEADERS) $(JANET_LOCAL_HEADERS)
 	$(EMCC) $(EMCCFLAGS) -o $@ -c $<
 
 $(JANET_EMTARGET): $(JANET_EMOBJECTS)
 	$(EMCC) $(EMCCFLAGS) -shared -o $@ $^
 
+#############################
+##### Generated C files #####
+#############################
+
+xxd: src/tools/xxd.c
+	$(CC) $< -o $@
+
+%.gen.c: %.janet xxd
+	./xxd $< $@ janet_gen_$(*F)
+
 ###################
 ##### Testing #####
 ###################
@@ -184,7 +163,7 @@ clean:
 	-rm $(JANET_LIBRARY)
 	-rm ctest/*.o ctest/*.out
 	-rm src/**/*.o src/**/*.bc vgcore.* *.js *.wasm *.html
-	-rm $(JANET_GENERATED_HEADERS)
+	-rm src/**/*.gen.c
 
 install: $(JANET_TARGET)
 	mkdir -p $(BINDIR)
diff --git a/build_win.bat b/build_win.bat
index f49ed8f3..a3cc3897 100644
--- a/build_win.bat
+++ b/build_win.bat
@@ -28,10 +28,16 @@ mkdir build\mainclient
 @link /nologo /out:build\xxd.exe build\xxd.obj
 @if errorlevel 1 goto :BUILDFAIL
 
-@rem Generate the headers
-@build\xxd.exe src\core\core.janet src\include\generated\core.h janet_gen_core
+@rem Generate the embedded sources
+@build\xxd.exe src\core\core.janet build\core\core.gen.c janet_gen_core
 @if errorlevel 1 goto :BUILDFAIL
-@build\xxd.exe src\mainclient\init.janet src\include\generated\init.h janet_gen_init
+@build\xxd.exe src\mainclient\init.janet build\mainclient\init.gen.c janet_gen_init
+@if errorlevel 1 goto :BUILDFAIL
+
+@rem Build the generated sources
+@%JANET_COMPILE% /Fobuild\core\core.gen.obj build\core\core.gen.c
+@if errorlevel 1 goto :BUILDFAIL
+@%JANET_COMPILE% /Fobuild\mainclient\init.gen.obj build\mainclient\init.gen.c
 @if errorlevel 1 goto :BUILDFAIL
 
 @rem Build the sources
diff --git a/src/core/compile.c b/src/core/compile.c
index 730348da..e67da663 100644
--- a/src/core/compile.c
+++ b/src/core/compile.c
@@ -728,7 +728,7 @@ static int cfun(JanetArgs args) {
 
 static const JanetReg cfuns[] = {
     {"compile", cfun,
-        "(compile ast)\n\n"
+        "(compile ast env [, source])\n\n"
         "Compiles an Abstract Sytnax Tree (ast) into a janet function. "
         "Pair the compile function with parsing functionality to implement "
         "eval. Returns a janet function and does not modify ast. Throws an "
diff --git a/src/core/corelib.c b/src/core/corelib.c
index eb3c57c3..cd8bc75d 100644
--- a/src/core/corelib.c
+++ b/src/core/corelib.c
@@ -25,8 +25,9 @@
 #include "state.h"
 #include "util.h"
 
-/* Generated header */
-#include <generated/core.h>
+/* Generated bytes */
+extern const unsigned char *janet_gen_core;
+extern size_t janet_gen_core_size;
 
 /* Use LoadLibrary on windows or dlopen on posix to load dynamic libaries
  * with native code. */
@@ -809,7 +810,7 @@ JanetTable *janet_core_env(void) {
     janet_def(env, "_env", ret, "The environment table for the current scope.");
 
     /* Run bootstrap source */
-    janet_dobytes(env, janet_gen_core, sizeof(janet_gen_core), "core.janet", NULL);
+    janet_dobytes(env, janet_gen_core, janet_gen_core_size, "core.janet", NULL);
 
     return env;
 }
diff --git a/src/include/generated/.gitkeep b/src/include/generated/.gitkeep
deleted file mode 100644
index e69de29b..00000000
diff --git a/src/mainclient/main.c b/src/mainclient/main.c
index a335e43f..6fbbdd5d 100644
--- a/src/mainclient/main.c
+++ b/src/mainclient/main.c
@@ -21,10 +21,11 @@
 */
 
 #include <janet/janet.h>
-
-#include <generated/init.h>
 #include "line.h"
 
+extern const unsigned char *janet_gen_init;
+extern size_t janet_gen_init_size;
+
 int main(int argc, char **argv) {
     int i, status;
     JanetArray *args;
@@ -46,7 +47,7 @@ int main(int argc, char **argv) {
     janet_line_init();
 
     /* Run startup script */
-    status = janet_dobytes(env, janet_gen_init, sizeof(janet_gen_init), "init.janet", NULL);
+    status = janet_dobytes(env, janet_gen_init, janet_gen_init_size, "init.janet", NULL);
 
     /* Deinitialize vm */
     janet_deinit();
diff --git a/src/tools/xxd.c b/src/tools/xxd.c
index 760ee4e2..4529912c 100644
--- a/src/tools/xxd.c
+++ b/src/tools/xxd.c
@@ -36,6 +36,7 @@ int main(int argc, const char **argv) {
 	static const char hex[] = "0123456789ABCDEF";
 	char buf[BUFSIZE];
 	size_t bytesRead = 0;
+	size_t totalRead = 0;
 	int lineIndex = 0;
 	int line = 0;
 
@@ -58,12 +59,13 @@ int main(int argc, const char **argv) {
 	}
 
 	/* Write the header */
-	fprintf(out, "/* Auto generated - DO NOT EDIT */\n\n");
-	fprintf(out, "static const unsigned char %s[] = {", argv[3]);
+	fprintf(out, "/* Auto generated - DO NOT EDIT */\n\n#include <stddef.h>\n\n");
+	fprintf(out, "static const unsigned char bytes[] = {");
 
 	/* Read in chunks from buffer */
 	while ((bytesRead = fread(buf, 1, sizeof(buf), in)) > 0) {
 		size_t i;
+		totalRead += bytesRead;
 		for (i = 0; i < bytesRead; ++i) {
 			int byte = ((uint8_t *)buf) [i];
 
@@ -89,6 +91,11 @@ int main(int argc, const char **argv) {
   	/* Write the tail */
 	fputs("\n};\n\n", out);
 
+	fprintf(out, "const unsigned char *%s = bytes;\n\n", argv[3]);
+
+    /* Write chunk size */
+	fprintf(out, "size_t %s_size = %ld;\n", argv[3], totalRead);
+
 	/* Close the file handles */
 	fclose(in);
 	fclose(out);
diff --git a/src/webclient/main.c b/src/webclient/main.c
index c912bcb0..fefc5089 100644
--- a/src/webclient/main.c
+++ b/src/webclient/main.c
@@ -21,9 +21,11 @@
 */
 
 #include <janet/janet.h>
-#include <generated/webinit.h>
 #include <emscripten.h>
 
+extern const unsigned char *janet_gen_webinit;
+extern size_t janet_gen_webinit_size;
+
 static JanetFiber *repl_fiber = NULL;
 static JanetBuffer *line_buffer = NULL;
 static const uint8_t *line_prompt = NULL;
@@ -78,7 +80,7 @@ void repl_init(void) {
 
     /* Run startup script */
     Janet ret;
-    status = janet_dobytes(env, janet_gen_webinit, sizeof(janet_gen_webinit), "webinit.janet", &ret);
+    status = janet_dobytes(env, janet_gen_webinit, janet_gen_webinit_size, "webinit.janet", &ret);
     if (status == JANET_SIGNAL_ERROR) {
         printf("start up error.\n");
         janet_deinit();