diff options
Diffstat (limited to 'src/cmd/link/internal/ld/lib.go')
| -rw-r--r-- | src/cmd/link/internal/ld/lib.go | 29 |
1 files changed, 19 insertions, 10 deletions
diff --git a/src/cmd/link/internal/ld/lib.go b/src/cmd/link/internal/ld/lib.go index 702c902142..54ac109b20 100644 --- a/src/cmd/link/internal/ld/lib.go +++ b/src/cmd/link/internal/ld/lib.go @@ -1238,6 +1238,10 @@ func (ctxt *Link) hostlink() { } } + // On darwin, whether to combine DWARF into executable. + // Only macOS supports unmapped segments such as our __DWARF segment. + combineDwarf := ctxt.IsDarwin() && !*FlagS && !*FlagW && !debug_s && machoPlatform == PLATFORM_MACOS && ctxt.IsAMD64() + switch ctxt.HeadType { case objabi.Hdarwin: if machoPlatform == PLATFORM_MACOS && ctxt.IsAMD64() { @@ -1248,6 +1252,9 @@ func (ctxt *Link) hostlink() { if ctxt.DynlinkingGo() && !ctxt.Arch.InFamily(sys.ARM, sys.ARM64) { argv = append(argv, "-Wl,-flat_namespace") } + if !combineDwarf { + argv = append(argv, "-Wl,-S") // suppress STAB (symbolic debugging) symbols + } case objabi.Hopenbsd: argv = append(argv, "-Wl,-nopie") case objabi.Hwindows: @@ -1587,11 +1594,16 @@ func (ctxt *Link) hostlink() { ctxt.Logf("%s", out) } - if !*FlagS && !*FlagW && !debug_s && ctxt.HeadType == objabi.Hdarwin { + if combineDwarf { dsym := filepath.Join(*flagTmpdir, "go.dwarf") if out, err := exec.Command("dsymutil", "-f", *flagOutfile, "-o", dsym).CombinedOutput(); err != nil { Exitf("%s: running dsymutil failed: %v\n%s", os.Args[0], err, out) } + // Remove STAB (symbolic debugging) symbols after we are done with them (by dsymutil). + // They contain temporary file paths and make the build not reproducible. + if out, err := exec.Command("strip", "-S", *flagOutfile).CombinedOutput(); err != nil { + Exitf("%s: running strip failed: %v\n%s", os.Args[0], err, out) + } // Skip combining if `dsymutil` didn't generate a file. See #11994. if _, err := os.Stat(dsym); os.IsNotExist(err) { return @@ -1607,15 +1619,12 @@ func (ctxt *Link) hostlink() { if err != nil { Exitf("%s: parsing Mach-O header failed: %v", os.Args[0], err) } - // Only macOS supports unmapped segments such as our __DWARF segment. - if machoPlatform == PLATFORM_MACOS && ctxt.IsAMD64() { - if err := machoCombineDwarf(ctxt, exef, exem, dsym, combinedOutput); err != nil { - Exitf("%s: combining dwarf failed: %v", os.Args[0], err) - } - os.Remove(*flagOutfile) - if err := os.Rename(combinedOutput, *flagOutfile); err != nil { - Exitf("%s: %v", os.Args[0], err) - } + if err := machoCombineDwarf(ctxt, exef, exem, dsym, combinedOutput); err != nil { + Exitf("%s: combining dwarf failed: %v", os.Args[0], err) + } + os.Remove(*flagOutfile) + if err := os.Rename(combinedOutput, *flagOutfile); err != nil { + Exitf("%s: %v", os.Args[0], err) } } } |