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cmd/go: use cgo -srcdir when using SWIG

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SWIG generates cgo input files in the work directory. When those files
are passed directly to cgo, cgo generates long file names that include
the object directory (with slashes replaced by underscores). Instead,
use cgo's new -srcdir option to give it short file names.

When using both SWIG and cgo, copy the cgo files into the object
directory first.

Use a shorter object file name when compiling the C file generated by
SWIG.

Fixes #17070.

Change-Id: Ic558603f1731636d9999f3130ad0224b24bd7dcb
Reviewed-on: https://go-review.googlesource.com/32485
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: David Crawshaw <crawshaw@golang.org>
This commit is contained in:
Ian Lance Taylor 2016-11-01 12:06:22 -07:00
parent e22b5efb36
commit 7bf0fc9fc3
1 changed files with 26 additions and 10 deletions
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36
src/cmd/go/build.go
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@ -1430,7 +1430,7 @@ func (b *builder) build(a *action) (err error) {
}
}
var gofiles, cgofiles, cfiles, sfiles, cxxfiles, objects, cgoObjects, pcCFLAGS, pcLDFLAGS []string
var gofiles, cgofiles, objdirCgofiles, cfiles, sfiles, cxxfiles, objects, cgoObjects, pcCFLAGS, pcLDFLAGS []string
gofiles = append(gofiles, a.p.GoFiles...)
cgofiles = append(cgofiles, a.p.CgoFiles...)
@ -1452,7 +1452,7 @@ func (b *builder) build(a *action) (err error) {
if err != nil {
return err
}
cgofiles = append(cgofiles, outGo...)
objdirCgofiles = append(objdirCgofiles, outGo...)
cfiles = append(cfiles, outC...)
cxxfiles = append(cxxfiles, outCXX...)
}
@ -1487,7 +1487,7 @@ func (b *builder) build(a *action) (err error) {
if a.cgo != nil && a.cgo.target != "" {
cgoExe = a.cgo.target
}
outGo, outObj, err := b.cgo(a.p, cgoExe, obj, pcCFLAGS, pcLDFLAGS, cgofiles, gccfiles, cxxfiles, a.p.MFiles, a.p.FFiles)
outGo, outObj, err := b.cgo(a, cgoExe, obj, pcCFLAGS, pcLDFLAGS, cgofiles, objdirCgofiles, gccfiles, cxxfiles, a.p.MFiles, a.p.FFiles)
if err != nil {
return err
}
@ -3209,7 +3209,8 @@ func (b *builder) cflags(p *Package) (cppflags, cflags, cxxflags, fflags, ldflag
var cgoRe = regexp.MustCompile(`[/\\:]`)
func (b *builder) cgo(p *Package, cgoExe, obj string, pcCFLAGS, pcLDFLAGS, cgofiles, gccfiles, gxxfiles, mfiles, ffiles []string) (outGo, outObj []string, err error) {
func (b *builder) cgo(a *action, cgoExe, obj string, pcCFLAGS, pcLDFLAGS, cgofiles, objdirCgofiles, gccfiles, gxxfiles, mfiles, ffiles []string) (outGo, outObj []string, err error) {
p := a.p
cgoCPPFLAGS, cgoCFLAGS, cgoCXXFLAGS, cgoFFLAGS, cgoLDFLAGS := b.cflags(p)
cgoCPPFLAGS = append(cgoCPPFLAGS, pcCFLAGS...)
cgoLDFLAGS = append(cgoLDFLAGS, pcLDFLAGS...)
@ -3239,6 +3240,20 @@ func (b *builder) cgo(p *Package, cgoExe, obj string, pcCFLAGS, pcLDFLAGS, cgofi
// Allows including _cgo_export.h from .[ch] files in the package.
cgoCPPFLAGS = append(cgoCPPFLAGS, "-I", obj)
// If we have cgo files in the object directory, then copy any
// other cgo files into the object directory, and pass a
// -srcdir option to cgo.
var srcdirarg []string
if len(objdirCgofiles) > 0 {
for _, fn := range cgofiles {
if err := b.copyFile(a, obj+filepath.Base(fn), filepath.Join(p.Dir, fn), 0666, false); err != nil {
return nil, nil, err
}
}
cgofiles = append(cgofiles, objdirCgofiles...)
srcdirarg = []string{"-srcdir", obj}
}
// cgo
// TODO: CGO_FLAGS?
gofiles := []string{obj + "_cgo_gotypes.go"}
@ -3288,7 +3303,7 @@ func (b *builder) cgo(p *Package, cgoExe, obj string, pcCFLAGS, pcLDFLAGS, cgofi
cgoflags = append(cgoflags, "-exportheader="+obj+"_cgo_install.h")
}
if err := b.run(p.Dir, p.ImportPath, cgoenv, buildToolExec, cgoExe, "-objdir", obj, "-importpath", p.ImportPath, cgoflags, "--", cgoCPPFLAGS, cgoCFLAGS, cgofiles); err != nil {
if err := b.run(p.Dir, p.ImportPath, cgoenv, buildToolExec, cgoExe, srcdirarg, "-objdir", obj, "-importpath", p.ImportPath, cgoflags, "--", cgoCPPFLAGS, cgoCFLAGS, cgofiles); err != nil {
return nil, nil, err
}
outGo = append(outGo, gofiles...)
@ -3304,7 +3319,8 @@ func (b *builder) cgo(p *Package, cgoExe, obj string, pcCFLAGS, pcLDFLAGS, cgofi
}
for _, file := range gccfiles {
ofile := obj + cgoRe.ReplaceAllString(file[:len(file)-1], "_") + "o"
base := filepath.Base(file)
ofile := obj + cgoRe.ReplaceAllString(base[:len(base)-1], "_") + "o"
if err := b.gcc(p, ofile, cflags, file); err != nil {
return nil, nil, err
}
@ -3314,7 +3330,7 @@ func (b *builder) cgo(p *Package, cgoExe, obj string, pcCFLAGS, pcLDFLAGS, cgofi
cxxflags := stringList(cgoCPPFLAGS, cgoCXXFLAGS)
for _, file := range gxxfiles {
// Append .o to the file, just in case the pkg has file.c and file.cpp
ofile := obj + cgoRe.ReplaceAllString(file, "_") + ".o"
ofile := obj + cgoRe.ReplaceAllString(filepath.Base(file), "_") + ".o"
if err := b.gxx(p, ofile, cxxflags, file); err != nil {
return nil, nil, err
}
@ -3323,7 +3339,7 @@ func (b *builder) cgo(p *Package, cgoExe, obj string, pcCFLAGS, pcLDFLAGS, cgofi
for _, file := range mfiles {
// Append .o to the file, just in case the pkg has file.c and file.m
ofile := obj + cgoRe.ReplaceAllString(file, "_") + ".o"
ofile := obj + cgoRe.ReplaceAllString(filepath.Base(file), "_") + ".o"
if err := b.gcc(p, ofile, cflags, file); err != nil {
return nil, nil, err
}
@ -3333,7 +3349,7 @@ func (b *builder) cgo(p *Package, cgoExe, obj string, pcCFLAGS, pcLDFLAGS, cgofi
fflags := stringList(cgoCPPFLAGS, cgoFFLAGS)
for _, file := range ffiles {
// Append .o to the file, just in case the pkg has file.c and file.f
ofile := obj + cgoRe.ReplaceAllString(file, "_") + ".o"
ofile := obj + cgoRe.ReplaceAllString(filepath.Base(file), "_") + ".o"
if err := b.gfortran(p, ofile, fflags, file); err != nil {
return nil, nil, err
}
@ -3669,7 +3685,7 @@ func (b *builder) swigOne(p *Package, file, obj string, pcCFLAGS []string, cxx b
b.showOutput(p.Dir, p.ImportPath, b.processOutput(out)) // swig warning
}
return obj + goFile, obj + gccBase + gccExt, nil
return goFile, obj + gccBase + gccExt, nil
}
// disableBuildID adjusts a linker command line to avoid creating a