diff options
Diffstat (limited to 'meta/recipes-devtools/go/go-1.11/0002-cmd-go-make-content-based-hash-generation-less-pedan.patch')
| -rw-r--r-- | meta/recipes-devtools/go/go-1.11/0002-cmd-go-make-content-based-hash-generation-less-pedan.patch | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/meta/recipes-devtools/go/go-1.11/0002-cmd-go-make-content-based-hash-generation-less-pedan.patch b/meta/recipes-devtools/go/go-1.11/0002-cmd-go-make-content-based-hash-generation-less-pedan.patch new file mode 100644 index 0000000000..66b8561874 --- /dev/null +++ b/meta/recipes-devtools/go/go-1.11/0002-cmd-go-make-content-based-hash-generation-less-pedan.patch @@ -0,0 +1,218 @@ +From 47db69e20ed66fb62b01affd83d829654b829893 Mon Sep 17 00:00:00 2001 +From: Matt Madison <matt@madison.systems> +Date: Mon, 19 Feb 2018 08:50:59 -0800 +Subject: [PATCH] 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 cedbfbf..5763a0d 100644 +--- a/src/cmd/go/internal/envcmd/env.go ++++ b/src/cmd/go/internal/envcmd/env.go +@@ -128,7 +128,7 @@ func ExtraEnvVars() []cfg.EnvVar { + func ExtraEnvVarsCostly() []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 12e1527..e41bfac 100644 +--- a/src/cmd/go/internal/work/exec.go ++++ b/src/cmd/go/internal/work/exec.go +@@ -174,6 +174,8 @@ 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 +@@ -190,7 +192,7 @@ 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) +@@ -201,13 +203,13 @@ func (b *Builder) buildActionID(a *Action) cache.ActionID { + } + if len(p.CgoFiles)+len(p.SwigFiles) > 0 { + fmt.Fprintf(h, "cgo %q\n", b.toolID("cgo")) +- cppflags, cflags, cxxflags, fflags, ldflags, _ := b.CFlags(p) +- fmt.Fprintf(h, "CC=%q %q %q %q\n", b.ccExe(), cppflags, cflags, ldflags) ++ cppflags, cflags, cxxflags, fflags, ldflags, _ := b.CFlags(p, true) ++ fmt.Fprintf(h, "CC=%q %q %q %q\n", b.ccExe(true), cppflags, cflags, ldflags) + 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? + } +@@ -2096,33 +2098,33 @@ 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 +@@ -2131,11 +2133,14 @@ 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 + } + +@@ -2285,8 +2290,23 @@ 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 { +@@ -2304,6 +2324,13 @@ 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 + } +@@ -2319,7 +2346,7 @@ 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 + } +@@ -2679,7 +2706,7 @@ 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 + } |