"Phantom" dependency in golang build-CodePudding

I recently come across a spooky go build problem as I add in some functions in the new version and renamed the old folder.

go version is 1.10.4, too old to have module management

I put all source code folders under /home/zxun/src/

And the new code folder is now "quotelive" in it, with the older version "quotelive_0831".

Now in the path /home/zxun/src/quotelive

go clean -cache -r
go build

And here is the output

# quotelive_0831
./signclient.go:231:6: undefined: "quotelive/util".Count
./testmod.go:95:5: undefined: "quotelive/util".Count
./timetask.go:32:2: undefined: "quotelive/util".Count
./ctp.go:412: undefined: "quotelive/util".Count

the Count function in util subfolder is of course absent in the old version 0831 But why does it come up # quotelive_0831 and encounter this dependency problem?

As I want to get around this problem by moving /home/zxun/src/quotelive_0831 to a new place /home/zxun/src_old/quotelive_0831, it keeps haunting me!

# _/home/zxun/src_bkp/quotelive_0831
./signclient.go:231:6: undefined: "quotelive/util".Count
./testmod.go:95:5: undefined: "quotelive/util".Count
./timetask.go:32:2: undefined: "quotelive/util".Count
./ctp.go:412: undefined: "quotelive/util".Count

Using go build -v in the former case it referenced quotelive_0831, and in the latter it referenced _/home/zxun/src_bkp/quotelive_0831, before flashing out those errors.

I tried go build -x and find out it DID remember quotelive_0831 as the default building folder. The question is how to get rid of this memory?

~/src/quotelive$ go build -x
WORK=/tmp/go-build560195042
mkdir -p $WORK/b001/
cd /home/zxun/src_bkp/quotelive_0831
CGO_LDFLAGS='"-g" "-O2"' /usr/go10/pkg/tool/linux_amd64/cgo -objdir $WORK/b001/ -importpath _/home/zxun/src_bkp/quotelive_0831 -- -I $WORK/b001/ -g -O2 ./ctp.go
cd $WORK
gcc -fno-caret-diagnostics -c -x c - || true
gcc -Qunused-arguments -c -x c - || true
gcc -fdebug-prefix-map=a=b -c -x c - || true
gcc -gno-record-gcc-switches -c -x c - || true
cd $WORK/b001

In terms of "repeatable smallest case", try to copy your work folder and rename it by another name, as I did to quotelive. And then try the build in your original one.

Recent update: I did work around it by using LiteIDE - Build - Force Build and it turned out no error. Force build applied the command:

/usr/go10/bin/go build -a -v [/home/zxun/src/quotelive]

CodePudding user response：

I did work around it by using LiteIDE - Build - Force Build and it turned out no error. LiteIDE showed what command it applied:

/usr/go10/bin/go build -a -v [/home/zxun/src/quotelive]

I tried to use go build -a -v alone and it did work properly.

-a is a Must.