From 36c6e0505308b0e1d96a4a1c3626a841ae19ecea Mon Sep 17 00:00:00 2001
From: Nathan Misner <natemisner@msn.com>
Date: Tue, 17 Jan 2023 09:26:10 -0500
Subject: [PATCH] makefile

---
 .gitignore |  5 +++++
 Makefile   | 24 ++++++++++++++++++++++++
 a65.c      |  2 +-
 a65eval.c  | 10 ++++++----
 4 files changed, 36 insertions(+), 5 deletions(-)
 create mode 100644 Makefile

diff --git a/.gitignore b/.gitignore
index 09a5545..11d8202 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,6 +9,11 @@ madoola.lst
 madoola.bin
 variables.asm
 
+# build artifacts
+*.o
+*.d
+a65
+
 # User-specific files
 *.rsuser
 *.suo
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..8f59a80
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,24 @@
+CC = gcc
+
+TARGET = a65
+
+CFLAGS = -g -std=c89 -Wall -Wvla -O0 -MMD
+
+OBJECTS =    a65.o \
+			 a65eval.o \
+			 a65util.o
+
+DEPENDS = $(OBJECTS:.o=.d)
+
+all: $(TARGET)
+
+clean:
+	rm *.o *.d
+
+$(TARGET): $(OBJECTS)
+	$(CC) $(CFLAGS) -o $@ $(OBJECTS)
+
+%.o: %.c
+	$(CC) -c $(CFLAGS) -o $@ $<
+
+-include $(DEPENDS)
diff --git a/a65.c b/a65.c
index 5059ae9..57356a7 100644
--- a/a65.c
+++ b/a65.c
@@ -81,7 +81,7 @@ static void pseudo_op();
 
 static int done, ifsp, off;
 
-void main(int argc, char **argv) {
+int main(int argc, char **argv) {
     SCRATCH unsigned *o;
 
     printf("6502 Cross-Assembler (Portable) Ver 0.2n\n");
diff --git a/a65eval.c b/a65eval.c
index 82a68f1..67caa79 100644
--- a/a65eval.c
+++ b/a65eval.c
@@ -47,6 +47,8 @@ expression analyzer processes the token stream into unsigned results of
 arithmetic expressions.
 */
 
+#include <ctype.h>
+
 /*  Get global goodies:  */
 
 #include "a65.h"
@@ -67,7 +69,7 @@ static void exp_error(char c);
 static void make_number(unsigned base);
 static int isnum(char c);
 static int ishex(char c);
-static int isalnum(char c);
+static int isalphnum(char c);
 
 /*  Machine opcode argument field parsing routine.  The token stream	*/
 /*  from the lexical analyzer is processed to extract addressing mode	*/
@@ -174,7 +176,7 @@ static unsigned eval(unsigned pre) {
 		case IMM:   exp_error('S');  break;
 
 		case SEP:	if (pre != START) unlex();
-		case EOL:	exp_error('E');  return;
+		case EOL:	exp_error('E');  return 0;
 
 		case OPR:
 			if (!(token.attr & UNARY)) { exp_error('E');  break; }
@@ -402,7 +404,7 @@ static int ishex(char c) {
     return isnum(c) || ((c = toupper(c)) >= 'A' && c <= 'F');
 }
 
-static int isalnum(char c) {
+static int isalphnum(char c) {
     return isalph(c) || isnum(c);
 }
 
@@ -419,7 +421,7 @@ void unlex() {
 
 void pops(char *s) {
     trash();
-    for (; isalnum(*s = popc()); ++s);
+    for (; isalphnum(*s = popc()); ++s);
     pushc(*s);  *s = '\0';
     return;
 }
-- 
2.45.2