readme update; use CC in Makefile

Makefile

@@ -10,8 +10,8 @@ main: $(subst .cpp,.o,$(CXXFILES))
 prog: main test.fp
 	./main < test.fp > forsp.ir
 	llc -march=x86 -filetype=obj --relocation-model=pic forsp.ir -O1
-	clang -c support.c -m32 -Os
+	$(CC) -c support.c -m32 -Os
-	clang support.o forsp.ir.o -m32 -Os
+	$(CC) support.o forsp.ir.o -m32 -Os
 
 clean:
 	rm -f a.out main *.ir *.o

README.md

@@ -7,11 +7,13 @@ forspll features:
 * Lisp-style S-expression syntax
 * Forth-style data stack for parameters/values
 * Linking with C functions (see `support.c`)
+* Recursion: `$self` gets pointer to current function
 
 Missing features:
 
+* Captured variables: Functions/lambdas are *not dynamic* and do not capture the state of previously declared variables
 * Quote operator: `quote`/`'`
-* Lists and atoms or any dynamic allocations
+* Built-in dynamic allocations (implement them via platform-specific `support.c`)
 
 ## Building
 

support.c

@@ -43,7 +43,7 @@ void eq()
 void cons()
 {
     int32_t *st = &stack;
-    int32_t *pair = malloc(2 * sizeof(int32_t));
+    int32_t *pair = (int32_t *)malloc(2 * sizeof(int32_t));
     --sp;
     pair[0] = st[sp];
     pair[1] = st[sp - 1];