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-rw-r--r--meta/recipes-devtools/go/go-1.10/0002-cmd-go-make-content-based-hash-generation-less-pedan.patch220
1 files changed, 220 insertions, 0 deletions
diff --git a/meta/recipes-devtools/go/go-1.10/0002-cmd-go-make-content-based-hash-generation-less-pedan.patch b/meta/recipes-devtools/go/go-1.10/0002-cmd-go-make-content-based-hash-generation-less-pedan.patch
new file mode 100644
index 00000000000..74f37a99efe
--- /dev/null
+++ b/meta/recipes-devtools/go/go-1.10/0002-cmd-go-make-content-based-hash-generation-less-pedan.patch
@@ -0,0 +1,220 @@
+From 8b2feaee81d7a16adc59e61d06c1e7314d3a5408 Mon Sep 17 00:00:00 2001
+From: Matt Madison <matt@madison.systems>
+Date: Mon, 19 Feb 2018 08:50:59 -0800
+Subject: [PATCH 2/9] cmd/go: make content-based hash generation less pedantic
+
+Go 1.10's build tool now uses content-based hashes to
+determine when something should be built or re-built.
+This same mechanism is used to maintain a built-artifact
+cache for speeding up builds.
+
+However, the hashes it generates include information that
+doesn't work well with OE, nor with using a shared runtime
+library.
+
+First, it embeds path names to source files, unless
+building within GOROOT. This prevents the building
+of a package in GOPATH for later staging into GOROOT.
+
+This patch adds support for the environment variable
+GOPATH_OMIT_IN_ACTIONID. If present, path name
+embedding is disabled.
+
+Second, if cgo is enabled, the build ID for cgo-related
+packages will include the current value of the environment
+variables for invoking the compiler (CC, CXX, FC) and
+any CGO_xxFLAGS variables. Only if the settings used
+during a compilation exactly match, character for character,
+the values used for compiling runtime/cgo or any other
+cgo-enabled package being imported, will the tool
+decide that the imported package is up-to-date.
+
+This is done to help ensure correctness, but is overly
+simplistic and effectively prevents the reuse of built
+artifacts that use cgo (or shared runtime, which includes
+runtime/cgo).
+
+This patch filters out all compiler flags except those
+beginning with '-m'. The default behavior can be restored
+by setting the CGO_PEDANTIC environment variable.
+
+Upstream-Status: Inappropriate [OE specific]
+
+Signed-off-by: Matt Madison <matt@madison.systems>
+---
+ src/cmd/go/internal/envcmd/env.go | 2 +-
+ src/cmd/go/internal/work/exec.go | 63 ++++++++++++++++++++++++++++-----------
+ 2 files changed, 46 insertions(+), 19 deletions(-)
+
+diff --git a/src/cmd/go/internal/envcmd/env.go b/src/cmd/go/internal/envcmd/env.go
+index f891123f9c..ebacfbfdbc 100644
+--- a/src/cmd/go/internal/envcmd/env.go
++++ b/src/cmd/go/internal/envcmd/env.go
+@@ -113,7 +113,7 @@ func findEnv(env []cfg.EnvVar, name string) string {
+ func ExtraEnvVars() []cfg.EnvVar {
+ var b work.Builder
+ b.Init()
+- cppflags, cflags, cxxflags, fflags, ldflags, err := b.CFlags(&load.Package{})
++ cppflags, cflags, cxxflags, fflags, ldflags, err := b.CFlags(&load.Package{}, false)
+ if err != nil {
+ // Should not happen - b.CFlags was given an empty package.
+ fmt.Fprintf(os.Stderr, "go: invalid cflags: %v\n", err)
+diff --git a/src/cmd/go/internal/work/exec.go b/src/cmd/go/internal/work/exec.go
+index c4c1500eb2..b0f6b45647 100644
+--- a/src/cmd/go/internal/work/exec.go
++++ b/src/cmd/go/internal/work/exec.go
+@@ -173,6 +173,8 @@ func (b *Builder) Do(root *Action) {
+ wg.Wait()
+ }
+
++var omitGopath = os.Getenv("GOPATH_OMIT_IN_ACTIONID") != ""
++
+ // buildActionID computes the action ID for a build action.
+ func (b *Builder) buildActionID(a *Action) cache.ActionID {
+ p := a.Package
+@@ -189,7 +191,7 @@ func (b *Builder) buildActionID(a *Action) cache.ActionID {
+ // but it does not hide the exact value of $GOPATH.
+ // Include the full dir in that case.
+ // Assume b.WorkDir is being trimmed properly.
+- if !p.Goroot && !strings.HasPrefix(p.Dir, b.WorkDir) {
++ if !p.Goroot && !omitGopath && !strings.HasPrefix(p.Dir, b.WorkDir) {
+ fmt.Fprintf(h, "dir %s\n", p.Dir)
+ }
+ fmt.Fprintf(h, "goos %s goarch %s\n", cfg.Goos, cfg.Goarch)
+@@ -197,13 +199,13 @@ func (b *Builder) buildActionID(a *Action) cache.ActionID {
+ fmt.Fprintf(h, "omitdebug %v standard %v local %v prefix %q\n", p.Internal.OmitDebug, p.Standard, p.Internal.Local, p.Internal.LocalPrefix)
+ if len(p.CgoFiles)+len(p.SwigFiles) > 0 {
+ fmt.Fprintf(h, "cgo %q\n", b.toolID("cgo"))
+- cppflags, cflags, cxxflags, fflags, _, _ := b.CFlags(p)
+- fmt.Fprintf(h, "CC=%q %q %q\n", b.ccExe(), cppflags, cflags)
++ cppflags, cflags, cxxflags, fflags, _, _ := b.CFlags(p, true)
++ fmt.Fprintf(h, "CC=%q %q %q\n", b.ccExe(true), cppflags, cflags)
+ if len(p.CXXFiles)+len(p.SwigFiles) > 0 {
+- fmt.Fprintf(h, "CXX=%q %q\n", b.cxxExe(), cxxflags)
++ fmt.Fprintf(h, "CXX=%q %q\n", b.cxxExe(true), cxxflags)
+ }
+ if len(p.FFiles) > 0 {
+- fmt.Fprintf(h, "FC=%q %q\n", b.fcExe(), fflags)
++ fmt.Fprintf(h, "FC=%q %q\n", b.fcExe(true), fflags)
+ }
+ // TODO(rsc): Should we include the SWIG version or Fortran/GCC/G++/Objective-C compiler versions?
+ }
+@@ -1731,33 +1733,33 @@ var (
+ // gccCmd returns a gcc command line prefix
+ // defaultCC is defined in zdefaultcc.go, written by cmd/dist.
+ func (b *Builder) GccCmd(incdir, workdir string) []string {
+- return b.compilerCmd(b.ccExe(), incdir, workdir)
++ return b.compilerCmd(b.ccExe(false), incdir, workdir)
+ }
+
+ // gxxCmd returns a g++ command line prefix
+ // defaultCXX is defined in zdefaultcc.go, written by cmd/dist.
+ func (b *Builder) GxxCmd(incdir, workdir string) []string {
+- return b.compilerCmd(b.cxxExe(), incdir, workdir)
++ return b.compilerCmd(b.cxxExe(false), incdir, workdir)
+ }
+
+ // gfortranCmd returns a gfortran command line prefix.
+ func (b *Builder) gfortranCmd(incdir, workdir string) []string {
+- return b.compilerCmd(b.fcExe(), incdir, workdir)
++ return b.compilerCmd(b.fcExe(false), incdir, workdir)
+ }
+
+ // ccExe returns the CC compiler setting without all the extra flags we add implicitly.
+-func (b *Builder) ccExe() []string {
+- return b.compilerExe(origCC, cfg.DefaultCC(cfg.Goos, cfg.Goarch))
++func (b *Builder) ccExe(filtered bool) []string {
++ return b.compilerExe(origCC, cfg.DefaultCC(cfg.Goos, cfg.Goarch), filtered)
+ }
+
+ // cxxExe returns the CXX compiler setting without all the extra flags we add implicitly.
+-func (b *Builder) cxxExe() []string {
+- return b.compilerExe(origCXX, cfg.DefaultCXX(cfg.Goos, cfg.Goarch))
++func (b *Builder) cxxExe(filtered bool) []string {
++ return b.compilerExe(origCXX, cfg.DefaultCXX(cfg.Goos, cfg.Goarch), filtered)
+ }
+
+ // fcExe returns the FC compiler setting without all the extra flags we add implicitly.
+-func (b *Builder) fcExe() []string {
+- return b.compilerExe(os.Getenv("FC"), "gfortran")
++func (b *Builder) fcExe(filtered bool) []string {
++ return b.compilerExe(os.Getenv("FC"), "gfortran", filtered)
+ }
+
+ // compilerExe returns the compiler to use given an
+@@ -1766,11 +1768,14 @@ func (b *Builder) fcExe() []string {
+ // of the compiler but can have additional arguments if they
+ // were present in the environment value.
+ // For example if CC="gcc -DGOPHER" then the result is ["gcc", "-DGOPHER"].
+-func (b *Builder) compilerExe(envValue string, def string) []string {
++func (b *Builder) compilerExe(envValue string, def string, filtered bool) []string {
+ compiler := strings.Fields(envValue)
+ if len(compiler) == 0 {
+ compiler = []string{def}
+ }
++ if filtered {
++ return append(compiler[0:1], filterCompilerFlags(compiler[1:])...)
++ }
+ return compiler
+ }
+
+@@ -1920,8 +1925,23 @@ func envList(key, def string) []string {
+ return strings.Fields(v)
+ }
+
++var filterFlags = os.Getenv("CGO_PEDANTIC") == ""
++
++func filterCompilerFlags(flags []string) []string {
++ var newflags []string
++ if !filterFlags {
++ return flags
++ }
++ for _, flag := range flags {
++ if strings.HasPrefix(flag, "-m") {
++ newflags = append(newflags, flag)
++ }
++ }
++ return newflags
++}
++
+ // CFlags returns the flags to use when invoking the C, C++ or Fortran compilers, or cgo.
+-func (b *Builder) CFlags(p *load.Package) (cppflags, cflags, cxxflags, fflags, ldflags []string, err error) {
++func (b *Builder) CFlags(p *load.Package, filtered bool) (cppflags, cflags, cxxflags, fflags, ldflags []string, err error) {
+ defaults := "-g -O2"
+
+ if cppflags, err = buildFlags("CPPFLAGS", "", p.CgoCPPFLAGS, checkCompilerFlags); err != nil {
+@@ -1939,6 +1959,13 @@ func (b *Builder) CFlags(p *load.Package) (cppflags, cflags, cxxflags, fflags, l
+ if ldflags, err = buildFlags("LDFLAGS", defaults, p.CgoLDFLAGS, checkLinkerFlags); err != nil {
+ return
+ }
++ if filtered {
++ cppflags = filterCompilerFlags(cppflags)
++ cflags = filterCompilerFlags(cflags)
++ cxxflags = filterCompilerFlags(cxxflags)
++ fflags = filterCompilerFlags(fflags)
++ ldflags = filterCompilerFlags(ldflags)
++ }
+
+ return
+ }
+@@ -1954,7 +1981,7 @@ var cgoRe = regexp.MustCompile(`[/\\:]`)
+
+ func (b *Builder) cgo(a *Action, cgoExe, objdir string, pcCFLAGS, pcLDFLAGS, cgofiles, gccfiles, gxxfiles, mfiles, ffiles []string) (outGo, outObj []string, err error) {
+ p := a.Package
+- cgoCPPFLAGS, cgoCFLAGS, cgoCXXFLAGS, cgoFFLAGS, cgoLDFLAGS, err := b.CFlags(p)
++ cgoCPPFLAGS, cgoCFLAGS, cgoCXXFLAGS, cgoFFLAGS, cgoLDFLAGS, err := b.CFlags(p, false)
+ if err != nil {
+ return nil, nil, err
+ }
+@@ -2306,7 +2333,7 @@ func (b *Builder) swigIntSize(objdir string) (intsize string, err error) {
+
+ // Run SWIG on one SWIG input file.
+ func (b *Builder) swigOne(a *Action, p *load.Package, file, objdir string, pcCFLAGS []string, cxx bool, intgosize string) (outGo, outC string, err error) {
+- cgoCPPFLAGS, cgoCFLAGS, cgoCXXFLAGS, _, _, err := b.CFlags(p)
++ cgoCPPFLAGS, cgoCFLAGS, cgoCXXFLAGS, _, _, err := b.CFlags(p, false)
+ if err != nil {
+ return "", "", err
+ }
+--
+2.14.1
+