build: make nacl pass

Add nacl.bash, the NaCl version of all.bash.
It's a separate script because it builds a variant of package syscall
with a large zip file embedded in it, containing all the input files
needed for tests.

Disable various tests new since the last round, mostly the ones using os/exec.

Fixes #7945.

LGTM=dave
R=golang-codereviews, remyoudompheng, dave, bradfitz
CC=golang-codereviews
https://golang.org/cl/100590044

4 files changed, 35 insertions, 6 deletions

diff --git a/src/cmd/addr2line/addr2line_test.go b/src/cmd/addr2line/addr2line_test.go
index 1b7f8b5f54..b278d08ce2 100644
--- a/src/cmd/addr2line/addr2line_test.go
+++ b/src/cmd/addr2line/addr2line_test.go
@@ -92,6 +92,10 @@ func testAddr2Line(t *testing.T, exepath, addr string) {
 
 // This is line 93. The test depends on that.
 func TestAddr2Line(t *testing.T) {
+	if runtime.GOOS == "nacl" {
+		t.Skip("skipping on nacl")
+	}
+
 	syms := loadSyms(t)
 
 	tmpDir, err := ioutil.TempDir("", "TestAddr2Line")
diff --git a/src/cmd/nm/nm_test.go b/src/cmd/nm/nm_test.go
index eab0732794..f4e47a42da 100644
--- a/src/cmd/nm/nm_test.go
+++ b/src/cmd/nm/nm_test.go
@@ -55,6 +55,10 @@ func checkSymbols(t *testing.T, nmoutput []byte) {
 }
 
 func TestNM(t *testing.T) {
+	if runtime.GOOS == "nacl" {
+		t.Skip("skipping on nacl")
+	}
+
 	tmpDir, err := ioutil.TempDir("", "TestNM")
 	if err != nil {
 		t.Fatal("TempDir failed: ", err)
diff --git a/src/cmd/objdump/objdump_test.go b/src/cmd/objdump/objdump_test.go
index 6ad74c87dc..354e5d407a 100644
--- a/src/cmd/objdump/objdump_test.go
+++ b/src/cmd/objdump/objdump_test.go
@@ -19,6 +19,10 @@ import (
 )
 
 func loadSyms(t *testing.T) map[string]string {
+	if runtime.GOOS == "nacl" {
+		t.Skip("skipping on nacl")
+	}
+
 	cmd := exec.Command("go", "tool", "nm", os.Args[0])
 	out, err := cmd.CombinedOutput()
 	if err != nil {
@@ -40,6 +44,10 @@ func loadSyms(t *testing.T) map[string]string {
 }
 
 func runObjDump(t *testing.T, exe, startaddr, endaddr string) (path, lineno string) {
+	if runtime.GOOS == "nacl" {
+		t.Skip("skipping on nacl")
+	}
+
 	cmd := exec.Command(exe, os.Args[0], startaddr, endaddr)
 	out, err := cmd.CombinedOutput()
 	if err != nil {
@@ -67,7 +75,7 @@ func runObjDump(t *testing.T, exe, startaddr, endaddr string) (path, lineno stri
 	return f[0], f[1]
 }
 
-func testObjDump(t *testing.T, exe, startaddr, endaddr string) {
+func testObjDump(t *testing.T, exe, startaddr, endaddr string, line int) {
 	srcPath, srcLineNo := runObjDump(t, exe, startaddr, endaddr)
 	fi1, err := os.Stat("objdump_test.go")
 	if err != nil {
@@ -80,13 +88,13 @@ func testObjDump(t *testing.T, exe, startaddr, endaddr string) {
 	if !os.SameFile(fi1, fi2) {
 		t.Fatalf("objdump_test.go and %s are not same file", srcPath)
 	}
-	if srcLineNo != "89" {
-		t.Fatalf("line number = %v; want 89", srcLineNo)
+	if srcLineNo != fmt.Sprint(line) {
+		t.Fatalf("line number = %v; want %d", srcLineNo, line)
 	}
 }
 
-// This is line 88. The test depends on that.
 func TestObjDump(t *testing.T) {
+	_, _, line, _ := runtime.Caller(0)
 	syms := loadSyms(t)
 
 	tmp, exe := buildObjdump(t)
@@ -98,11 +106,15 @@ func TestObjDump(t *testing.T) {
 		t.Fatalf("invalid start address %v: %v", startaddr, err)
 	}
 	endaddr := fmt.Sprintf("%x", addr+10)
-	testObjDump(t, exe, startaddr, endaddr)
-	testObjDump(t, exe, "0x"+startaddr, "0x"+endaddr)
+	testObjDump(t, exe, startaddr, endaddr, line-1)
+	testObjDump(t, exe, "0x"+startaddr, "0x"+endaddr, line-1)
 }
 
 func buildObjdump(t *testing.T) (tmp, exe string) {
+	if runtime.GOOS == "nacl" {
+		t.Skip("skipping on nacl")
+	}
+
 	tmp, err := ioutil.TempDir("", "TestObjDump")
 	if err != nil {
 		t.Fatal("TempDir failed: ", err)
diff --git a/src/cmd/pack/pack_test.go b/src/cmd/pack/pack_test.go
index e634c86f76..486242603a 100644
--- a/src/cmd/pack/pack_test.go
+++ b/src/cmd/pack/pack_test.go
@@ -14,6 +14,7 @@ import (
 	"os/exec"
 	"path/filepath"
 	"regexp"
+	"runtime"
 	"testing"
 	"time"
 	"unicode/utf8"
@@ -185,6 +186,10 @@ func TestExtract(t *testing.T) {
 
 // Test that pack-created archives can be understood by the tools.
 func TestHello(t *testing.T) {
+	if runtime.GOOS == "nacl" {
+		t.Skip("skipping on nacl")
+	}
+
 	dir := tmpDir(t)
 	defer os.RemoveAll(dir)
 	hello := filepath.Join(dir, "hello.go")
@@ -217,6 +222,10 @@ func TestHello(t *testing.T) {
 
 // Test that pack works with very long lines in PKGDEF.
 func TestLargeDefs(t *testing.T) {
+	if runtime.GOOS == "nacl" {
+		t.Skip("skipping on nacl")
+	}
+
 	dir := tmpDir(t)
 	defer os.RemoveAll(dir)
 	large := filepath.Join(dir, "large.go")