From bf8c09bd47d2cc412b766513b2744d813349fbda Mon Sep 17 00:00:00 2001
From: Massimiliano Adamo <massimiliano.adamo@geant.org>
Date: Fri, 4 Jun 2021 01:08:42 +0200
Subject: [PATCH] add usage instructions

---
 build.sh | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/build.sh b/build.sh
index 5424a71..e806fce 100755
--- a/build.sh
+++ b/build.sh
@@ -1,11 +1,14 @@
 #!/bin/bash
 #
-# for windows and Mac check the README
+# you can choose your OS and Architecture as follows:
+# ./build.sh --os=windows --arch=amd64
+#
+# or you can use --help to check a list of platforms and options
 #
 if ! which go &>/dev/null; then
     echo "Go is not installed or is not in \$PATH"
     echo "giving up..."
-    exit
+    exit 1
 fi
 unset GOBIN
 BIN_NAME=acme-downloader
@@ -86,7 +89,7 @@ if [[ "$OS" == "windows" ]]; then
     BIN_NAME="${BIN_NAME}.exe"
 fi
 
-# env GOOS=windows GOARCH=amd64 go build -ldflags "-s -w -X main.appVersion=${PROG_VERSION} -X main.buildTime=${BUILDTIME}" .
+# env GOOS=$OS GOARCH=$ARCH go build -ldflags "-s -w -X main.appVersion=${PROG_VERSION} -X main.buildTime=${BUILDTIME}" .
 env GOOS=$OS GOARCH=$ARCH go get -ldflags "-s -w -X main.appVersion=${PROG_VERSION} -X main.buildTime=${BUILDTIME}" .
 if [ $? -gt 0 ]; then
     echo -e "\nthere was an error while compiling the code\n"
-- 
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