Checksum workflow

.github/workflows/makefile.yml

@@ -0,0 +1,22 @@
+name: Verify Checksum
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Install dependencies
+      run: make
+
+    - name: Run check
+      run: make check
+

Makefile

@@ -1,6 +1,8 @@
 ROM_NAME := smb
-ASM := asm6f/asm6f
+ASM_DIR := asm6f
+ASM := $(ASM_DIR)/asm6f
 
+ASM_DIR_EXISTS := $(wildcard $(ASM_DIR))
 ASM_EXISTS := $(wildcard $(ASM))
 
 all: $(ROM_NAME).nes
@@ -13,13 +15,19 @@ $(ROM_NAME).nes: asm
 
 clean:
 	rm -f $(ROM_NAME).nes $(ROM_NAME).lst
-	make clean -C asm6f
+	make clean -C $(ASM_DIR)
+
+check: $(ROM_NAME).nes
+	@sha1sum -c smb.sha1
 
 # Only build assembler if it doesn't already exist. Use its own makefile.
 asm:
+ifndef ASM_DIR_EXISTS
+	git clone https://github.com/freem/asm6f.git $(ASM_DIR)
+endif
 ifndef ASM_EXISTS
-	make -C asm6f
+	make -C $(ASM_DIR)
 endif
 
-.PHONY: all clean asm
+.PHONY: all clean check asm
 

smb.sha1

@@ -0,0 +1 @@
+ea343f4e445a9050d4b4fbac2c77d0693b1d0922  smb.nes