ci: add cross build

Signed-off-by: Kir Kolyshkin <[email protected]>

.github/workflows/test.yml

@@ -18,3 +18,6 @@ jobs:
       run: make test
     - name: Lint
       run: make lint
+    - name: Cross build
+      if: ${{ runner.os == 'Linux' }}
+      run: make cross

Makefile

@@ -1,9 +1,12 @@
 .SHELLFLAGS = -ec
 PACKAGES ?= mountinfo mount
 BINDIR ?= _build/bin
+CROSS_OSES ?= linux freebsd darwin windows
+CROSS_ARCHES ?= amd64 arm arm64 ppc64le s390x
+OS_ARCH_SKIP = '^((freebsd|darwin|windows)/(ppc64le|s390x)|windows/arm64|freebsd/s390x)$$'
 
 .PHONY: all
-all: lint test
+all: lint test cross
 
 .PHONY: test
 test:
@@ -24,3 +27,15 @@ $(BINDIR)/golangci-lint: $(BINDIR)
 
 $(BINDIR):
 	mkdir -p $(BINDIR)
+
+.PHONY: cross
+cross:
+	for os in $(CROSS_OSES); do \
+		for arch in $(CROSS_ARCHES); do \
+			echo "$$os/$$arch" | grep -qE $(OS_ARCH_SKIP) && continue; \
+			echo "# building for $$os/$$arch"; \
+			for p in $(PACKAGES); do \
+				(cd $$p	&& GOOS=$$os GOARCH=$$arch go build .); \
+			done; \
+		done; \
+	done