github.com/stffabi/git-lfs@v2.3.5-0.20180214015214-8eeaa8d88902+incompatible/script/genmakefile/genmakefile.go (about)

     1  package main
     2  
     3  import (
     4  	"fmt"
     5  	"go/build"
     6  	"os"
     7  	"strings"
     8  )
     9  
    10  var packages map[string]string = make(map[string]string)
    11  
    12  func generate_target(srcdir string, pkgdir string, prefix string, ctx build.Context) string {
    13  	pkg, _ := ctx.ImportDir(srcdir+pkgdir, 0)
    14  	name := pkg.Name
    15  	var deps []string
    16  	for _, imp := range pkg.Imports {
    17  		if strings.HasPrefix(imp, prefix) {
    18  			imp = strings.TrimPrefix(imp, prefix)
    19  			if packages[imp] == "" {
    20  				packages[imp] = generate_target(srcdir, imp, prefix, ctx)
    21  			}
    22  			deps = append(deps, "$(LIBS_"+packages[imp]+")")
    23  		}
    24  	}
    25  	if pkgdir != "" {
    26  		fmt.Printf("SRCDIR_%s := $(SRCDIR)%s/\n", name, pkgdir)
    27  	} else {
    28  		fmt.Printf("SRCDIR_%s := $(SRCDIR)\n", name)
    29  	}
    30  	fmt.Printf("SRC_%s := $(addprefix $(SRCDIR_%s), %s)\n", name, name, strings.Join(pkg.GoFiles, " "))
    31  	fmt.Printf("DEPS_%s := %s\n", name, strings.Join(deps, " "))
    32  	if pkgdir != "" {
    33  		fmt.Printf("OBJ_%s := $(LIBDIR)/%s.o\n", name, pkgdir)
    34  		fmt.Printf("LIB_%s := $(LIBDIR)/%s.a\n", name, pkgdir)
    35  		fmt.Printf("LIBS_%s := $(LIB_%s) $(DEPS_%s)\n", name, name, name)
    36  		fmt.Printf("$(OBJ_%s) : $(SRC_%s) $(DEPS_%s)\n", name, name, name)
    37  		fmt.Printf("\t@mkdir -p $(dir $@)\n")
    38  		fmt.Printf("\t$(GOC) $(GOFLAGS) -c -o $@ $(SRC_%s)\n", name)
    39  	}
    40  	return name
    41  }
    42  
    43  func main() {
    44  	srcdir := os.Args[1]
    45  	prefix := os.Args[2]
    46  	ctx := build.Default
    47  	ctx.CgoEnabled = false
    48  	generate_target(srcdir, "", prefix, ctx)
    49  }