Added some basic build automation.

Author: stephen-fox

.gitignore

@@ -1,3 +1,6 @@
 # JetBrains.
 .idea/
 *iml
+
+# Build artifacts.
+build/

README.md

@@ -56,3 +56,14 @@ arguments and an explanation of their effects:
   -respect-file-case
     	Respect filenames' case when matching their extensions
 ```
+
+## Building from source
+You can use any of the following methods to build the application:
+
+- `go build cmd/finley/main.go` - Build the application
+- `build.sh` - A simple wrapper around 'go build' that saves build artifacts
+to `build/` and sets a version number in the compiled binary. This script
+expects a version to be provided by setting an environment variable
+named `VERSION`
+- `buildwin.sh` - Build the application for Windows (since that seems like the
+most common OS this tool would be used on)

build.sh

@@ -0,0 +1,29 @@
+#!/bin/bash
+
+if [[ -z "${VERSION}" ]]
+then
+    echo 'the VERSION environment variable must be set'
+    exit 1
+fi
+
+set -eux
+
+buildDir='build'
+mkdir -p "${buildDir}"
+
+projectName="$(basename $( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd ))"
+filename="${projectName}"
+if [[ ! -z "${GOOS+x}" ]]
+then
+    filename="${filename}-${GOOS}"
+fi
+if [[ ! -z "${GOARCH+x}" ]]
+then
+    filename="${filename}-${GOARCH}"
+fi
+if [[ ! -z "${GOOS+x}" ]] && [[ "${GOOS}" == "windows" ]]
+then
+    filename="${filename}.exe"
+fi
+
+go build -ldflags "-X main.version=${VERSION}" -o "${buildDir}/${filename}" cmd/${projectName}/main.go

buildwin.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+set -eux
+
+projectDirPath="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+
+GOOS=windows "${projectDirPath}/build.sh"

cmd/finley/main.go

@@ -18,6 +18,10 @@ import (
 	"time"
 )
 
+var (
+	version string
+)
+
 func main() {
 	targetDirPath := flag.String("d", "", "The directory to search for DLLs")
 	fileExtsCsv := flag.String("e", ".dll", "Comma separated list of file extensions to search for")