Add Makefile

Allows inserting build information variables at compile time

3 files changed, 40 insertions, 4 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..27e3c4c
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,10 @@
+# Copyright (c) 2023 Nicolas Paul All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+/.vscode/
+/.idea/
+*.o
+*.out
+*.exe
+crocc
\ No newline at end of file
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..206bf7c
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,18 @@
+# Copyright (c) 2023 Nicolas Paul All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+BINARY := crocc
+
+VERSION := $(shell git describe --tags --always --dirty)
+DATE := $(shell date -u '+%FT%T%z')
+
+LDFLAGS := -ldflags "-w -s -X main.version=$(VERSION) -X main.date=$(DATE)"
+
+$(BINARY): *.go
+	go build $(LDFLAGS) -o $(BINARY)
+
+clean:
+	rm -f $(BINARY)
+
+.PHONY: clean
diff --git a/crocc.go b/crocc.go
index 7be6806..59f1c7d 100644
--- a/crocc.go
+++ b/crocc.go
@@ -8,6 +8,7 @@ package main /* import "go.nc0.fr/crocc" */
 import (
 	"flag"
 	"log"
+	"runtime"
 )
 
 var (
@@ -16,7 +17,7 @@ var (
 	sitemap        = flag.Bool("sitemap", false, "generate sitemap.xml")
 	generateHidden = flag.Bool("hidden", false, "generate hidden pages")
 	verbose        = flag.Bool("v", false, "verbose output")
-	version        = flag.Bool("version", false, "print version and exit")
+	printVersion   = flag.Bool("version", false, "print version and exit")
 )
 
 const usage string = `crocc is a simple Markdown-based static site generator.
@@ -31,7 +32,11 @@ Usage:
 	
 Options:`
 
-const Version string = "1.0.0"
+// Set at compilation time
+var (
+	version string
+	date    string
+)
 
 func init() {
 	flag.Usage = func() {
@@ -43,8 +48,11 @@ func init() {
 func main() {
 	flag.Parse()
 
-	if *version {
-		log.Printf("crocc v%s\n", Version)
+	log.SetFlags(0)
+
+	if *printVersion {
+		log.Printf("crocc version %s %s/%s %s date %s",
+			version, runtime.GOOS, runtime.GOARCH, runtime.Compiler, date)
 		return
 	}
 }