fix(build): create cross compile target in Makefile

Makefile

@@ -25,6 +25,10 @@ GO_PKGS ?= $(shell glide nv)
 build:
 	@scripts/build-go.sh
 
+.PHONY: build-cross
+build-cross:
+	@BUILD_CROSS=1 scripts/build-go.sh
+
 .PHONY: all
 all: build
 

scripts/build-go.sh

@@ -9,14 +9,6 @@ readonly DIR="${GOPATH}/src/${REPO}"
 
 source "${DIR}/scripts/common.sh"
 
-if [[ -z "${VERSION:-}" ]]; then
-  VERSION=$(version_from_git)
-fi
-
-LDFLAGS="-s -X ${REPO}/pkg/version.DeploymentManagerVersion=${VERSION}"
-
-echo "Build version: ${VERSION}"
-
 build_binaries "$@"
 
 exit 0

scripts/common.sh

@@ -10,6 +10,18 @@ error_exit() {
   exit 1
 }
 
+assign_version() {
+  if [[ -z "${VERSION:-}" ]]; then
+    VERSION=$(version_from_git)
+  fi
+}
+
+assign_ldflags() {
+  if [[ -z "${LDFLAGS:-}" ]]; then
+    LDFLAGS="-s -X ${REPO}/pkg/version.DeploymentManagerVersion=${VERSION}"
+  fi
+}
+
 version_from_git() {
   local git_tag=$(git describe --tags --abbrev=0 2>/dev/null)
   local git_commit=$(git rev-parse --short HEAD)
@@ -29,13 +41,19 @@ build_binary_cross() {
 
 build_binaries() {
   local -a targets=($@)
+  #TODO: accept specific os/arch
+  local build_cross="${BUILD_CROSS:-}"
 
   if [[ ${#targets[@]} -eq 0 ]]; then
     targets=("${ALL_TARGETS[@]}")
   fi
 
   for t in "${targets[@]}"; do
+    if [[ -n "$build_cross" ]]; then
+      build_binary_cross "$t"
+    else
       build_binary "$t"
+    fi
   done
 }