nqasm: Initial stab at a lexer and parser

So far, this only understands instructions, but no operands or labels.  It
doesn't handle bad input gracefully.  It's just enough to test the basics.

1 files changed, 30 insertions, 0 deletions

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..554c540
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,30 @@
+OPTFLAGS = -Os
+CFLAGS   = -std=c99 -D_POSIX_C_SOURCE=200809L $(OPTFLAGS)
+
+GENSRCS  = lexer.c parser.c
+GENHDRS  = lexer.h parser.h
+SRCS     = $(sort $(wildcard *.c) $(GENSRCS))
+OBJS     = $(SRCS:.c=.o)
+TARGET   = nqasm
+
+all: $(TARGET)
+
+clean:
+	rm -f $(GENSRCS) $(GENHDRS) $(OBJS) $(TARGET)
+
+lexer.c lexer.h: lexer.l
+	flex $<
+
+parser.c parser.h: parser.y
+	bison $<
+
+lexer.o: parser.h
+parser.o: lexer.h
+
+%.o: %.c
+	$(CC) $(CFLAGS) -c $< -o $@
+
+$(TARGET): $(OBJS)
+	$(CC) $(CFLAGS) $^ -o $@
+
+.PHONY: all clean