Set file icon on macOS

.github/workflows/tmbasic.yaml

@@ -250,6 +250,8 @@ jobs:
           # https://github.com/actions/runner-images/issues/8613
           brew install awscli
 
+          brew install fileicon          
+
           export FILENAME=$(awk -F= '{ if ($1 == "build-environment-${{ matrix.platform }}") print $2 }' build/tags.ini)
           export S3_URL="s3://tmbasic/mac-build-envs/$FILENAME"
           aws s3 cp "$S3_URL" build-environment.tar.gz

CONTRIBUTING.md

@@ -66,7 +66,9 @@ Linux and Windows builds must be produced on a Linux build machine. Ubuntu Linux
 1. Type `exit` to leave the build environment.
 
 ## Build for macOS
-1. Install Xcode (version 12 or higher) and AWSCLI v2.
+1. Install Xcode (version 12 or higher).
+
+1. Install Hombrew and use it to `brew install awscli fileicon`.
 
 1. `aws configure` -- enter your AWS credentials. You need this to access the requester-pays S3 bucket `tmbasic` which contains premade build environments.
 

Makefile

@@ -680,6 +680,9 @@ bin/tmbasic$(EXE_EXTENSION): $(TMBASIC_OBJ_FILES) \
 ifeq ($(STRIP_TMBASIC),1)
 	$(STRIP) bin/tmbasic$(EXE_EXTENSION)
 endif
+ifeq ($(TARGET_OS),mac)
+	fileicon set bin/tmbasic doc/art/favicon/favicon.icns
+endif
 
 ifeq ($(TARGET_OS),win)
 obj/tmbasic/AppWin.res.o: src/tmbasic/AppWin.rc doc/art/favicon/favicon.ico