From 077b6e540a4f6af8a60df8912c9961d6e34c7747 Mon Sep 17 00:00:00 2001
From: Toshaan Bharvani <toshaan@vantosh.com>
Date: Sat, 27 Jan 2018 01:17:05 +0100
Subject: [PATCH] build: Add cross building option

Added a cross build option using a buildrelease function

Signed-off-by: Toshaan Bharvani <toshaan@vantosh.com>

build: Add gitignore entry for mgmt-* binaries

Signed-off-by: Toshaan Bharvani <toshaan@vantosh.com>

build: Update makefile based upon feed back

* rename cross to crossbuild
* added crossbuild to PHONY

Signed-off-by: Toshaan Bharvani <toshaan@vantosh.com>

build: Change the order of .PHONY as per the rest of the file

Signed-off-by: Toshaan Bharvani <toshaan@vantosh.com>
---
 .gitignore |  1 +
 Makefile   | 11 ++++++++++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/.gitignore b/.gitignore
index a9b27baa..4c68c7fd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,5 +9,6 @@ tmp/
 bindata/*.go
 mgmt
 mgmt.static
+mgmt-*
 mgmt.iml
 rpmbuild/
diff --git a/Makefile b/Makefile
index 20189f32..707c8e56 100644
--- a/Makefile
+++ b/Makefile
@@ -16,7 +16,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 SHELL = /usr/bin/env bash
-.PHONY: all art cleanart version program path deps run race bindata generate build clean test gofmt yamlfmt format docs rpmbuild mkdirs rpm srpm spec tar upload upload-sources upload-srpms upload-rpms copr
+.PHONY: all art cleanart version program path deps run race bindata generate build crossbuild clean test gofmt yamlfmt format docs rpmbuild mkdirs rpm srpm spec tar upload upload-sources upload-srpms upload-rpms copr
 .SILENT: clean bindata
 
 GO_FILES := $(shell find . -name '*.go')
@@ -40,6 +40,7 @@ REMOTE_PATH = 'pub/alt/$(USERNAME)/$(PROGRAM)'
 ifneq ($(GOTAGS),)
     BUILD_FLAGS = -tags '$(GOTAGS)'
 endif
+GOOSARCHES = linux/amd64 linux/ppc64 linux/ppc64le linux/arm64
 
 default: build
 
@@ -114,6 +115,14 @@ $(PROGRAM): $(GO_FILES)
 	@echo "Building: $(PROGRAM), version: $(SVERSION)..."
 	time go build -i -ldflags "-X main.program=$(PROGRAM) -X main.version=$(SVERSION)" -o $(PROGRAM) $(BUILD_FLAGS);
 
+define buildrelease
+GOOS=$(1) GOARCH=$(2) go build -ldflags "-X main.program=$(PROGRAM) -X main.version=$(SVERSION) -s -w" -o $(PROGRAM)-$(1)-$(2) $(BUILD_FLAGS);
+endef
+
+crossbuild:
+	@echo "Building: $(PROGRAM), version: $(SVERSION), arches: $(GOOSARCHES) ..."
+	$(foreach GOOSARCH,$(GOOSARCHES), $(call buildrelease,$(subst /,,$(dir $(GOOSARCH))),$(notdir $(GOOSARCH))))
+
 $(PROGRAM).static: $(GO_FILES)
 	@echo "Building: $(PROGRAM).static, version: $(SVERSION)..."
 	go generate