Go找不到本地包

Question

我有两个项目，一个是库，另一个是实用程序。我已经使用 go install 来构建库并将其放置在 pkg 区域中。这似乎按预期工作。

sbio $ pwd
      /home/mjohn/workspaces/goprojects/src/crown/sbio
sbio $ CC=armv7l-timesys-linux-gnueabi-gcc CGO_ENABLED=1 GOOS=linux GOARCH=arm GOARM=7 go install
sbio $ ls ../../../pkg/linux_arm/crown
      sbio.a

我的问题是当我试图让我的实用程序使用这个库时。它提示 no buildable Go source files 但它在 src 目录下查找，这让我认为它在 pkg 区域中看不到它。我在实用程序中的导入路径是 crown/sbio。任何想法都会有所帮助。

utility $ GOOS=linux GOARCH=arm GOARM=7 go build
         go build crown/sbio: no buildable Go source files in /home/mjohn/workspaces/goprojects/src/crown/sbio

utility $ GOOS=linux GOARCH=arm GOARM=7 go build -v -x -work
         WORK=/tmp/go-build709862068
         crown/sbio
         github.com/jessevdk/go-flags
         mkdir -p $WORK/github.com/jessevdk/go-flags/_obj/
         os/signal
         mkdir -p $WORK/github.com/jessevdk/
         cd /home/mjohn/workspaces/goprojects/src/github.com/jessevdk/go-flags
         /home/mjohn/software/go/pkg/tool/linux_386/compile -o $WORK/github.com/jessevdk/go-flags.a -trimpath $WORK -p github.com/jessevdk/go-flags -complete -buildid 2e7b82d3996437f712d51c2be269e6cd3eb809d6 -D _/home/mjohn/workspaces/goprojects/src/github.com/jessevdk/go-flags -I $WORK -pack ./arg.go ./closest.go ./command.go ./command_private.go ./completion.go ./convert.go ./error.go ./flags.go ./group.go ./group_private.go ./help.go ./ini.go ./ini_private.go ./man.go ./multitag.go ./option.go ./option_private.go ./optstyle_other.go ./parser.go ./parser_private.go ./termsize.go ./termsize_linux.go
         mkdir -p $WORK/os/signal/_obj/
         mkdir -p $WORK/os/
         cd /home/mjohn/software/go/src/os/signal
         /home/mjohn/software/go/pkg/tool/linux_386/compile -o $WORK/os/signal.a -trimpath $WORK -p os/signal -buildid 36d5db084a1ab49c3fbb474d340be7996d6606d8 -D _/home/mjohn/software/go/src/os/signal -I $WORK -pack -asmhdr $WORK/os/signal/_obj/go_asm.h ./doc.go ./signal.go ./signal_unix.go
         mkdir -p $WORK/crown/sbio/_obj/
         mkdir -p $WORK/crown/
         go build crown/sbio: no buildable Go source files in /home/mjohn/workspaces/goprojects/src/crown/sbio
         /home/mjohn/software/go/pkg/tool/linux_386/asm -o $WORK/os/signal/_obj/sig.o -trimpath $WORK -I $WORK/os/signal/_obj/ -I /home/mjohn/software/go/pkg/include -D GOOS_linux -D GOARCH_arm ./sig.s
         pack r $WORK/os/signal.a $WORK/os/signal/_obj/sig.o # internal

utility $ go env
         GOARCH="386"
         GOBIN=""
         GOEXE=""
         GOHOSTARCH="386"
         GOHOSTOS="linux"
         GOOS="linux"
         GOPATH="/home/mjohn/workspaces/goprojects"
         GORACE=""
         GOROOT="/home/mjohn/software/go"
         GOTOOLDIR="/home/mjohn/software/go/pkg/tool/linux_386"
         CC="gcc"
         GOGCCFLAGS="-fPIC -m32 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build583017880=/tmp/go-build -gno-record-gcc-switches"
         CXX="g++"
         CGO_ENABLED="1"

utility $ go version
         go version go1.7.4 linux/386

感谢您的帮助。

Answer 1

我能够通过使用定义的 CC 和 CGO_ENABLED 变量构建实用程序来解决我的问题。我需要为构建实用程序定义它们，即使它不包含任何 cgo 代码，但由于库的原因，它仍然需要。

如果可以在不需要这样做的情况下构建实用程序，我仍然会感兴趣，因为让库的每个用户都需要定义这些是很痛苦的。