update build-one script to match new build-all script

Signed-off-by: kim (grufwub) <grufwub@gmail.com>

build-one.sh

@@ -1,6 +1,38 @@
 #!/bin/sh
 
-echo "Building for current platform..."
-CGO_ENABLED=1 go build -trimpath -o 'gophor' -buildmode 'pie' -a -tags 'netgo' -ldflags '-s -w -extldflags "-static"'
-upx --best --color 'gophor'
-echo ""
+set -e
+
+PROJECT='gophor'
+OUTDIR='build'
+VERSION="$(cat 'constants.go' | grep -E '^\s*GophorVersion' | sed -e 's|\s*GophorVersion = \"||' -e 's|\"\s*$||')"
+GOVERSION="$(go version | sed -e 's|^go version go||' -e 's|\s.*$||')"
+LOGFILE='build.log'
+
+silent() {
+    "$@" > "$LOGFILE" 2>&1
+}
+
+build_for() {
+    local archname="$1" toolchain="$2" os="$3" arch="$4"
+    shift 4
+    if [ "$arch" = 'arm' ]; then
+        local armversion="$1"
+        shift 1
+    fi
+
+    echo "Building for ${os} ${archname}..."
+    local filename="${OUTDIR}/${PROJECT}_${os}_${archname}"
+    CGO_ENABLED=1 CC="$toolchain" GOOS="$os" GOARCH="$arch" GOARM="$armversion" silent go build -trimpath -o "$filename" "$@"
+    if [ "$?" -ne 0 ]; then
+        echo "Failed!"
+        return 1
+    fi
+
+    echo "Compressing ${filename}..."
+    silent upx --best "$filename"
+    silent upx -t "$filename"
+    echo ""
+}
+
+# Build time :)
+build_for 'amd64' 'x86_64-linux-musl-gcc' 'linux' 'amd64' -buildmode 'pie' -a -tags 'netgo' -ldflags '-s -w -extldflags "-static"'