Drop Go 1.4 compatability code everywhere

Yields a nice reduction in code size.

1 files changed, 7 insertions, 6 deletions

diff --git a/build.bash b/build.bash
index e492f17..1cc266b 100755
--- a/build.bash
+++ b/build.bash
@@ -38,16 +38,17 @@ BUILDTIME=$(date +%s)
 # Make sure we have the go binary
 go version > /dev/null
 
-# Go 1.5 changed the CLI syntax. Let's also support 1.3 and 1.4.
-# "go version go1.6.2 linux/amd64" -> "1.6"
+# Parse "go version go1.6.2 linux/amd64" to "1.6"
 V=$(go version | cut -d" " -f3 | cut -c3-5)
+# Reject old Go versions already here. It would fail with compile
+# errors anyway.
 if [[ $V == "1.3" || $V == "1.4" ]] ; then
-	LDFLAGS="-X main.GitVersion $GITVERSION -X main.GitVersionFuse $GITVERSIONFUSE -X main.BuildTime $BUILDTIME"
-else
-	# Go 1.5+ wants an "=" here
-	LDFLAGS="-X main.GitVersion=$GITVERSION -X main.GitVersionFuse=$GITVERSIONFUSE -X main.BuildTime=$BUILDTIME"
+	echo "Error: you need Go 1.5 or higher to compile gocryptfs"
+	echo -n "You have: "
+	go version
 fi
 
+LDFLAGS="-X main.GitVersion=$GITVERSION -X main.GitVersionFuse=$GITVERSIONFUSE -X main.BuildTime=$BUILDTIME"
 go build "-ldflags=$LDFLAGS" $@
 
 (cd gocryptfs-xray; go build $@)