all: add support for Windows

Makefile

@@ -1,7 +1,6 @@
 
 # aliases
 all: tinygo
-tinygo: build/tinygo
 
 # Default build and source directories, as created by `make llvm-build`.
 LLVM_BUILDDIR ?= llvm-build
@@ -33,28 +32,55 @@ else
     LLVM_OPTION += '-DLLVM_ENABLE_ASSERTIONS=OFF'
 endif
 
-.PHONY: all tinygo build/tinygo test $(LLVM_BUILDDIR) llvm-source clean fmt gen-device gen-device-nrf gen-device-avr
+.PHONY: all tinygo test $(LLVM_BUILDDIR) llvm-source clean fmt gen-device gen-device-nrf gen-device-avr
 
 LLVM_COMPONENTS = all-targets analysis asmparser asmprinter bitreader bitwriter codegen core coroutines debuginfodwarf executionengine instrumentation interpreter ipo irreader linker lto mc mcjit objcarcopts option profiledata scalaropts support target
 
-UNAME_S := $(shell uname -s)
-ifeq ($(UNAME_S),Linux)
+ifeq ($(OS),Windows_NT)
+    EXE = .exe
     START_GROUP = -Wl,--start-group
     END_GROUP = -Wl,--end-group
-else ifeq ($(UNAME_S),Darwin)
+
+    # LLVM compiled using MinGW on Windows appears to have problems with threads.
+    # Without this flag, linking results in errors like these:
+    #     libLLVMSupport.a(Threading.cpp.obj):Threading.cpp:(.text+0x55): undefined reference to `std::thread::hardware_concurrency()'
+    LLVM_OPTION += -DLLVM_ENABLE_THREADS=OFF
+
+    CGO_LDFLAGS += -static -static-libgcc -static-libstdc++
+    CGO_LDFLAGS_EXTRA += -lversion
+
+    # Build libclang manually because the CMake-based build system on Windows
+    # doesn't allow building libclang as a static library.
+    LIBCLANG_PATH = $(abspath build/libclang-custom.a)
+    LIBCLANG_FILES = $(abspath $(wildcard $(LLVM_BUILDDIR)/tools/clang/tools/libclang/CMakeFiles/libclang.dir/*.cpp.obj))
+
+    # Add the libclang dependency to the tinygo binary target.
+tinygo: $(LIBCLANG_PATH)
+test: $(LIBCLANG_PATH)
+    # Build libclang.
+$(LIBCLANG_PATH): $(LIBCLANG_FILES)
+	@mkdir -p build
+	ar rcs $(LIBCLANG_PATH) $^
+
+else ifeq ($(shell uname -s),Darwin)
     MD5SUM = md5
+    LIBCLANG_PATH = $(abspath $(LLVM_BUILDDIR))/lib/libclang.a
+else
+    LIBCLANG_PATH = $(abspath $(LLVM_BUILDDIR))/lib/libclang.a
+    START_GROUP = -Wl,--start-group
+    END_GROUP = -Wl,--end-group
 endif
 
-CLANG_LIBS = $(START_GROUP) $(abspath $(LLVM_BUILDDIR))/lib/libclang.a -lclangAnalysis -lclangARCMigrate -lclangAST -lclangASTMatchers -lclangBasic -lclangCodeGen -lclangCrossTU -lclangDriver -lclangDynamicASTMatchers -lclangEdit -lclangFormat -lclangFrontend -lclangFrontendTool -lclangHandleCXX -lclangHandleLLVM -lclangIndex -lclangLex -lclangParse -lclangRewrite -lclangRewriteFrontend -lclangSema -lclangSerialization -lclangStaticAnalyzerCheckers -lclangStaticAnalyzerCore -lclangStaticAnalyzerFrontend -lclangTooling -lclangToolingASTDiff -lclangToolingCore -lclangToolingInclusions $(END_GROUP) -lstdc++
+CLANG_LIBS = $(START_GROUP) -lclangAnalysis -lclangARCMigrate -lclangAST -lclangASTMatchers -lclangBasic -lclangCodeGen -lclangCrossTU -lclangDriver -lclangDynamicASTMatchers -lclangEdit -lclangFormat -lclangFrontend -lclangFrontendTool -lclangHandleCXX -lclangHandleLLVM -lclangIndex -lclangLex -lclangParse -lclangRewrite -lclangRewriteFrontend -lclangSema -lclangSerialization -lclangStaticAnalyzerCheckers -lclangStaticAnalyzerCore -lclangStaticAnalyzerFrontend -lclangTooling -lclangToolingASTDiff -lclangToolingCore -lclangToolingInclusions $(END_GROUP) -lstdc++
 
 LLD_LIBS = $(START_GROUP) -llldCOFF -llldCommon -llldCore -llldDriver -llldELF -llldMachO -llldMinGW -llldReaderWriter -llldWasm -llldYAML $(END_GROUP)
 
 
 # For static linking.
-ifneq ("$(wildcard $(LLVM_BUILDDIR)/bin/llvm-config)","")
+ifneq ("$(wildcard $(LLVM_BUILDDIR)/bin/llvm-config*)","")
     CGO_CPPFLAGS=$(shell $(LLVM_BUILDDIR)/bin/llvm-config --cppflags) -I$(abspath $(CLANG_SRC))/include -I$(abspath $(LLD_SRC))/include
     CGO_CXXFLAGS=-std=c++11
-    CGO_LDFLAGS=-L$(LLVM_BUILDDIR)/lib $(CLANG_LIBS) $(LLD_LIBS) $(shell $(LLVM_BUILDDIR)/bin/llvm-config --ldflags --libs --system-libs $(LLVM_COMPONENTS))
+    CGO_LDFLAGS+=$(LIBCLANG_PATH) -std=c++11 -L$(abspath $(LLVM_BUILDDIR)/lib) $(CLANG_LIBS) $(LLD_LIBS) $(shell $(LLVM_BUILDDIR)/bin/llvm-config --ldflags --libs --system-libs $(LLVM_COMPONENTS)) -lstdc++ $(CGO_LDFLAGS_EXTRA)
 endif
 
 
@@ -108,9 +134,9 @@ $(LLVM_BUILDDIR): $(LLVM_BUILDDIR)/build.ninja
 
 
 # Build the Go compiler.
-build/tinygo:
+tinygo:
 	@if [ ! -f "$(LLVM_BUILDDIR)/bin/llvm-config" ]; then echo "Fetch and build LLVM first by running:"; echo "  make llvm-source"; echo "  make $(LLVM_BUILDDIR)"; exit 1; fi
-	CGO_CPPFLAGS="$(CGO_CPPFLAGS)" CGO_CXXFLAGS="$(CGO_CXXFLAGS)" CGO_LDFLAGS="$(CGO_LDFLAGS)" $(GO) build -o build/tinygo -tags byollvm .
+	CGO_CPPFLAGS="$(CGO_CPPFLAGS)" CGO_CXXFLAGS="$(CGO_CXXFLAGS)" CGO_LDFLAGS="$(CGO_LDFLAGS)" $(GO) build -o build/tinygo$(EXE) -tags byollvm .
 
 test:
 	CGO_CPPFLAGS="$(CGO_CPPFLAGS)" CGO_CXXFLAGS="$(CGO_CXXFLAGS)" CGO_LDFLAGS="$(CGO_LDFLAGS)" $(GO) test -v -tags byollvm ./interp ./transform .
@@ -198,7 +224,7 @@ endif
 	$(TINYGO) build             -o wasm.wasm -target=wasm               examples/wasm/export
 	$(TINYGO) build             -o wasm.wasm -target=wasm               examples/wasm/main
 
-release: build/tinygo gen-device
+release: tinygo gen-device
 	@mkdir -p build/release/tinygo/bin
 	@mkdir -p build/release/tinygo/lib/clang/include
 	@mkdir -p build/release/tinygo/lib/CMSIS/CMSIS
@@ -208,7 +234,7 @@ release: build/tinygo gen-device
 	@mkdir -p build/release/tinygo/pkg/armv7m-none-eabi
 	@mkdir -p build/release/tinygo/pkg/armv7em-none-eabi
 	@echo copying source files
-	@cp -p  build/tinygo                 build/release/tinygo/bin
+	@cp -p  build/tinygo$(EXE)           build/release/tinygo/bin
 	@cp -p $(abspath $(CLANG_SRC))/lib/Headers/*.h build/release/tinygo/lib/clang/include
 	@cp -rp lib/CMSIS/CMSIS/Include      build/release/tinygo/lib/CMSIS/CMSIS
 	@cp -rp lib/CMSIS/README.md          build/release/tinygo/lib/CMSIS

azure-pipelines.yml

@@ -0,0 +1,61 @@
+jobs:
+- job: Build
+  timeoutInMinutes: 180
+  pool:
+    vmImage: 'VS2017-Win2016'
+  steps:
+    - checkout: self
+    - task: CacheBeta@0
+      displayName: Cache LLVM source
+      inputs:
+        key: llvm-source-8-windows-v0
+        path: llvm-project
+    - task: Bash@3
+      displayName: Download LLVM source
+      inputs:
+        targetType: inline
+        script: make llvm-source
+    - task: CacheBeta@0
+      displayName: Cache LLVM build
+      inputs:
+        key: llvm-build-8-windows-v1
+        path: llvm-build
+    - task: Bash@3
+      displayName: Build LLVM
+      inputs:
+        targetType: inline
+        script: |
+          if [ ! -f llvm-build/lib/liblldELF.a ]
+          then
+            choco install ninja
+            make llvm-build
+          fi
+    - task: Bash@3
+      displayName: Install QEMU
+      inputs:
+        targetType: inline
+        script: choco install qemu
+    - task: Bash@3
+      displayName: Test TinyGo
+      inputs:
+        targetType: inline
+        script: |
+          export PATH="$PATH:./llvm-build/bin:/c/Program Files/qemu"
+          make test
+    - task: Bash@3
+      displayName: Build TinyGo release tarball
+      inputs:
+        targetType: inline
+        script: |
+          export PATH="$PATH:./llvm-build/bin:/c/Program Files/qemu"
+          make release -j4
+    - publish: $(System.DefaultWorkingDirectory)/build/release.tar.gz
+      displayName: Publish tarball as artifact
+      artifact: tinygo.windows-amd64.tar.gz
+    - task: Bash@3
+      displayName: Smoke tests
+      inputs:
+        targetType: inline
+        script: |
+          export PATH="$PATH:./llvm-build/bin:/c/Program Files/qemu"
+          make smoketest TINYGO=build/tinygo AVR=0 RISCV=0

buildcache.go

@@ -109,10 +109,10 @@ func moveFile(src, dst string) error {
 		return err
 	}
 
-	err = os.Rename(dst+".tmp", dst)
+	err = outf.Close()
 	if err != nil {
 		return err
 	}
 
-	return outf.Close()
+	return os.Rename(dst+".tmp", dst)
 }

commands.go

@@ -24,6 +24,14 @@ func init() {
 		commands["ld.lld"] = append(commands["ld.lld"], "/usr/local/opt/llvm/bin/ld.lld")
 		commands["wasm-ld"] = append(commands["wasm-ld"], "/usr/local/opt/llvm/bin/wasm-ld")
 	}
+	// Add the path for when LLVM was installed with the installer from
+	// llvm.org, which by default doesn't add LLVM to the $PATH environment
+	// variable.
+	if runtime.GOOS == "windows" {
+		commands["clang"] = append(commands["clang"], "clang", "C:\\Program Files\\LLVM\\bin\\clang.exe")
+		commands["ld.lld"] = append(commands["ld.lld"], "lld", "C:\\Program Files\\LLVM\\bin\\lld.exe")
+		commands["wasm-ld"] = append(commands["wasm-ld"], "C:\\Program Files\\LLVM\\bin\\wasm-ld.exe")
+	}
 }
 
 func execCommand(cmdNames []string, args ...string) error {
@@ -33,7 +41,7 @@ func execCommand(cmdNames []string, args ...string) error {
 		cmd.Stderr = os.Stderr
 		err := cmd.Run()
 		if err != nil {
-			if err, ok := err.(*exec.Error); ok && err.Err == exec.ErrNotFound {
+			if err, ok := err.(*exec.Error); ok && (err.Err == exec.ErrNotFound || err.Err.Error() == "file does not exist") {
 				// this command was not found, try the next
 				continue
 			}

interp/interp_test.go

@@ -87,6 +87,7 @@ func fuzzyEqualIR(s1, s2 string) bool {
 func filterIrrelevantIRLines(lines []string) []string {
 	var out []string
 	for _, line := range lines {
+		line = strings.TrimSpace(line) // drop '\r' on Windows
 		if line == "" || line[0] == ';' {
 			continue
 		}

loader/loader.go

@@ -317,9 +317,9 @@ func (p *Program) parseFile(path string, mode parser.Mode) (*ast.File, error) {
 	defer rd.Close()
 	relpath := path
 	if filepath.IsAbs(path) {
-		relpath, err = filepath.Rel(p.Dir, path)
-		if err != nil {
-			return nil, err
+		rp, err := filepath.Rel(p.Dir, path)
+		if err == nil {
+			relpath = rp
 		}
 	}
 	return parser.ParseFile(p.fset, relpath, rd, mode)

main.go

@@ -552,11 +552,7 @@ func FlashGDB(pkgName, target, port string, ocdOutput bool, config *BuildConfig)
 			}
 			// Make sure the daemon doesn't receive Ctrl-C that is intended for
 			// GDB (to break the currently executing program).
-			// https://stackoverflow.com/a/35435038/559350
-			daemon.SysProcAttr = &syscall.SysProcAttr{
-				Setpgid: true,
-				Pgid:    0,
-			}
+			setCommandAsDaemon(daemon)
 			// Start now, and kill it on exit.
 			daemon.Start()
 			defer func() {

main_test.go

@@ -45,12 +45,14 @@ func TestCompiler(t *testing.T) {
 	}
 	defer os.RemoveAll(tmpdir)
 
+	if runtime.GOOS != "windows" {
 		t.Log("running tests on host...")
 		for _, path := range matches {
 			t.Run(path, func(t *testing.T) {
 				runTest(path, tmpdir, "", t)
 			})
 		}
+	}
 
 	if testing.Short() {
 		return
@@ -162,6 +164,7 @@ func runTest(path, tmpdir string, target string, t *testing.T) {
 
 	// putchar() prints CRLF, convert it to LF.
 	actual := bytes.Replace(stdout.Bytes(), []byte{'\r', '\n'}, []byte{'\n'}, -1)
+	expected = bytes.Replace(expected, []byte{'\r', '\n'}, []byte{'\n'}, -1) // for Windows
 
 	// Check whether the command ran successfully.
 	fail := false

transform/transform_test.go

@@ -70,6 +70,7 @@ func fuzzyEqualIR(s1, s2 string) bool {
 func filterIrrelevantIRLines(lines []string) []string {
 	var out []string
 	for _, line := range lines {
+		line = strings.TrimSpace(line) // drop '\r' on Windows
 		if line == "" || line[0] == ';' {
 			continue
 		}

util_unix.go

@@ -0,0 +1,20 @@
+// +build !windows
+
+package main
+
+// This file contains utility functions for Unix-like systems (e.g. Linux).
+
+import (
+	"os/exec"
+	"syscall"
+)
+
+// setCommandAsDaemon makes sure this command does not receive signals sent to
+// the parent.
+func setCommandAsDaemon(daemon *exec.Cmd) {
+	// https://stackoverflow.com/a/35435038/559350
+	daemon.SysProcAttr = &syscall.SysProcAttr{
+		Setpgid: true,
+		Pgid:    0,
+	}
+}

util_windows.go

@@ -0,0 +1,13 @@
+package main
+
+// This file contains utility functions for Windows.
+
+import (
+	"os/exec"
+)
+
+// setCommandAsDaemon makes sure this command does not receive signals sent to
+// the parent. It is unimplemented on Windows.
+func setCommandAsDaemon(daemon *exec.Cmd) {
+	// Not implemented.
+}