fix integration test

[ashmeenkaur]

Description

while running integration tests with go version 1.21.x, we were seeing the following error:

invalid value "$HOME/gcsfuse" for flag -C: -C flag must be first flag on command line
usage: go build [-o output] [build flags] [packages]
Run 'go help build' for details.

Fix: made -C the first flag on command line. These changes are compatible with go version 1.20.x and newer.

Link to the issue in case of a bug fix.

NA

Testing details

1. Manual - NA
2. Unit tests - NA
3. Integration tests - NA

[Tulsishah]

@ashmeenkaur Hope you have tested on GCE VM also. that won't break.

[ashmeenkaur]

@ashmeenkaur Hope you have tested on GCE VM also. that won't break.

Running into errors while running this on GCE VM with go version < 1.20.

[vadlakondaswetha]

@ashmeenkaur Hope you have tested on GCE VM also. that won't break.

Running into errors while running this on GCE VM with go version < 1.20.

Is it saying in the error that issue is with the go version? if not can you add a log line

[ashmeenkaur]

@ashmeenkaur Hope you have tested on GCE VM also. that won't break.

Running into errors while running this on GCE VM with go version < 1.20.

Is it saying in the error that issue is with the go version? if not can you add a log line

Yes, Here's the error log while running this with go version 1.19

Output:
17:39:48.572114 Building github.com/googlecloudplatform/gcsfuse to bin/gcsfuse
buildBinaries: /usr/local/go/bin/go build -C /home/ashmeen_google_com/gcsfuse -o /tmp/gcsfuse_readwrite_test_3616979871/bin/gcsfuse -ldflags -X main.gcsfuseVersion=fake_version github.com/googlecloudplatform/gcsfuse: exit status 2
Output:
flag provided but not defined: -C
usage: go build [-o output] [build flags] [packages]
Run 'go help build' for details.

I dont see its mentioning about go version anywhere. Can you add a log line mentioning that go version has to greater than specified version.

[ashmeenkaur]

I dont see its mentioning about go version anywhere. Can you add a log line mentioning that go version has to greater than specified version.

It doesn't specifically mentions that the go version has to be greater than some specific version. I came across this while experimenting.

go help build command shows the following documentation.

For go version 1.21.x

The build flags are shared by the build, clean, get, install, list, run,
and test commands:

        -C dir
                Change to dir before running the command.
                Any files named on the command line are interpreted after
                changing directories.
                If used, this flag must be the first one in the command line.

For go version 1.20.x

The build flags are shared by the build, clean, get, install, list, run,
and test commands:

	-C dir
		Change to dir before running the command.
		Any files named on the command line are interpreted after
		changing directories.

Documentation of the flag missing in go version 1.19.x

It would be good to add a log line since we already know the issue, instead of asking users to debug on their own.