Implement mqjsc compiler for standalone MicroQuickJS binaries

Makefile

@@ -75,17 +75,21 @@ ifdef CONFIG_ARM32
 MQJS_BUILD_FLAGS=-m32
 endif
 
-PROGS=mqjs$(EXE) example$(EXE)
+PROGS=mqjs$(EXE) mqjsc$(EXE) example$(EXE)
 TEST_PROGS=dtoa_test libm_test 
 
 all: $(PROGS)
 
 MQJS_OBJS=mqjs.o readline_tty.o readline.o mquickjs.o dtoa.o libm.o cutils.o
+MQJSC_OBJS=mqjsc.o mquickjs.o dtoa.o libm.o cutils.o
 LIBS=-lm
 
 mqjs$(EXE): $(MQJS_OBJS)
 	$(CC) $(LDFLAGS) -o $@ $^ $(LIBS)
 
+mqjsc$(EXE): $(MQJSC_OBJS)
+	$(CC) $(LDFLAGS) -o $@ $^ $(LIBS)
+
 mquickjs.o: mquickjs_atom.h
 
 mqjs_stdlib: mqjs_stdlib.host.o mquickjs_build.host.o
@@ -99,6 +103,8 @@ mqjs_stdlib.h: mqjs_stdlib
 
 mqjs.o: mqjs_stdlib.h
 
+mqjsc.o: mqjs_stdlib.h
+
 # C API example
 example.o: example_stdlib.h
 
@@ -117,7 +123,7 @@ example_stdlib.h: example_stdlib
 %.host.o: %.c
 	$(HOST_CC) $(HOST_CFLAGS) -c -o $@ $<
 
-test: mqjs example
+test: mqjs example mqjsc
 	./mqjs tests/test_closure.js
 	./mqjs tests/test_language.js
 	./mqjs tests/test_loop.js
@@ -127,6 +133,8 @@ test: mqjs example
 #	@sha256sum -c test_builtin.sha256
 	./mqjs -b test_builtin.bin
 	./example tests/test_rect.js
+# test mqjsc compiler
+	./tests/test_mqjsc.sh
 
 microbench: mqjs
 	./mqjs tests/microbench.js

README.md

@@ -64,6 +64,20 @@ system.
 Use the option `--no-column` to remove the column number debug info
 (only line numbers are remaining) if you want to save some storage.
 
+## Standalone binary compilation
+
+The `mqjsc` tool can produce a standalone C program binary executable
+that embeds the self-contained `mqjs` engine along with precompiled
+bytecode:
+
+```sh
+./mqjsc -o mandelbrot tests/mandelbrot.js
+./mandelbrot
+```
+
+The resulting binary only depends on the standard C library and
+optionally the mathematical library (`-lm`).
+
 ## Stricter mode
 
 MQuickJS only supports a subset of JavaScript (mostly ES5). It is

examples/hello_mqjsc.js

@@ -0,0 +1,24 @@
+/*
+  MicroQuickJS (MQuickJS) standalone compilation example.
+  Usage:
+    ./mqjsc -o hello_mqjsc examples/hello_mqjsc.js
+    ./hello_mqjsc Alice Bob
+*/
+
+print("Hello from a standalone MicroQuickJS binary!");
+
+if (typeof scriptArgs !== 'undefined' && scriptArgs.length > 0) {
+    print("Arguments provided:");
+    for (var i = 0; i < scriptArgs.length; i++) {
+        print("  - " + scriptArgs[i]);
+    }
+} else {
+    print("No arguments provided.");
+}
+
+function fib(n) {
+    if (n <= 1) return n;
+    return fib(n - 1) + fib(n - 2);
+}
+
+print("Fibonacci(10) =", fib(10));