Switch to using xgo to build cross-platform binaries using CGO

Author: cwarden

.circleci/config.yml

@@ -1,8 +1,8 @@
 version: 2
 jobs:
   build:
-    docker:
-      - image: cimg/go:1.20
+    machine:
+      image: ubuntu-2204:2023.07.2
     steps:
       - checkout
       - run: go install github.com/mitchellh/[email protected]
@@ -11,7 +11,10 @@ jobs:
       - restore_cache: # restores saved cache if no changes are detected since last run
           keys:
             - go-mod-v4-{{ checksum "go.sum" }}
-      - run: make dist
+      - run:
+          command: |
+            export GOPATH=/home/circleci/.go_workspace
+            make dist
       - save_cache:
           key: go-mod-v4-{{ checksum "go.sum" }}
           paths:

Makefile

@@ -1,11 +1,13 @@
 VERSION=$(shell git describe --abbrev=0 --always)
-LDFLAGS = -ldflags "-X github.com/ForceCLI/force/lib.Version=${VERSION}"
+LDFLAGS = -ldflags "-s -w -X github.com/ForceCLI/force/lib.Version=${VERSION}"
+LINUX_LDFLAGS = -ldflags "-s -w -extldflags '-static' -X github.com/ForceCLI/force/lib.Version=${VERSION}"
 GCFLAGS = -gcflags="all=-N -l"
 EXECUTABLE=force
-WINDOWS=$(EXECUTABLE)_windows_amd64.exe
-LINUX=$(EXECUTABLE)_linux_amd64
-OSX_AMD64=$(EXECUTABLE)_osx_amd64
-OSX_ARM64=$(EXECUTABLE)_osx_arm64
+PACKAGE=.
+WINDOWS=$(EXECUTABLE)-windows-amd64.exe
+LINUX=$(EXECUTABLE)-linux-amd64
+OSX_AMD64=$(EXECUTABLE)-darwin-amd64
+OSX_ARM64=$(EXECUTABLE)-darwin-arm64
 ALL=$(WINDOWS) $(LINUX) $(OSX_AMD64) $(OSX_ARM64)
 
 default:
@@ -17,17 +19,27 @@ install:
 install-debug:
 	go install ${LDFLAGS} ${GCFLAGS}
 
-$(WINDOWS):
-	env CGO_ENABLED=0 GOOS=windows GOARCH=amd64 go build -v -o $(WINDOWS) ${LDFLAGS}
+$(WINDOWS): checkcmd-xgo
+	xgo -go 1.21 -out $(EXECUTABLE) -dest . ${LDFLAGS} -buildmode default -trimpath -targets windows/amd64 -pkg ${PACKAGE} -x .
 
-$(LINUX):
-	env CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -v -o $(LINUX) ${LDFLAGS}
+# Build static binaries on linux
+$(LINUX): checkcmd-x86_64-linux-gnu-gcc checkcmd-x86_64-linux-gnu-g++
+	env \
+		GOOS=linux \
+		GOARCH=amd64 \
+		CC=x86_64-linux-gnu-gcc \
+		CXX=x86_64-linux-gnu-g++ \
+		CGO_ENABLED=1 \
+		CGO_FLAGS="-static"
+		go build -v -tags 'netgo osusergo' -o $(LINUX) ${LINUX_LDFLAGS} ${PACKAGE}
 
-$(OSX_AMD64):
-	env CGO_ENABLED=0 GOOS=darwin GOARCH=amd64 go build -v -o $(OSX_AMD64) ${LDFLAGS}
+# Build macOS binaries using docker images that contain SDK
+# See https://github.com/crazy-max/xgo and https://github.com/tpoechtrager/osxcross
+$(OSX_ARM64): checkcmd-xgo
+	xgo -go 1.21 -out $(EXECUTABLE) -dest . ${LDFLAGS} -buildmode default -trimpath -targets darwin/arm64 -pkg ${PACKAGE} -x .
 
-$(OSX_ARM64):
-	env CGO_ENABLED=0 GOOS=darwin GOARCH=arm64 go build -v -o $(OSX_ARM64) ${LDFLAGS}
+$(OSX_AMD64): checkcmd-xgo
+	xgo -go 1.21 -out $(EXECUTABLE) -dest . ${LDFLAGS} -buildmode default -trimpath -targets darwin/amd64 -pkg ${PACKAGE} -x .
 
 $(basename $(WINDOWS)).zip: $(WINDOWS)
 	zip $@ $<
@@ -54,4 +66,8 @@ test:
 clean:
 	-rm -f $(EXECUTABLE) $(EXECUTABLE)_*
 
+checkcmd-%:
+	@hash $(*) > /dev/null 2>&1 || \
+		(echo "ERROR: '$(*)' must be installed and available on your PATH."; exit 1)
+
 .PHONY: default dist clean docs