goflymake wrongly marking func main() as error

[indradhanush]

In all of my golang buffers, goflymake is marking my func main {} as an error although go run for that particular file works pretty well.

Here's a screenshot of the problem:

Also, my emacs configuration for go is pretty simple:

;; go-mode
(require 'go-mode-load)
(require 'go-flymake)
(require 'go-autocomplete)
(add-hook 'before-save-hook 'gofmt-before-save)
(add-hook 'go-mode-hook (lambda () (local-set-key (kbd "C-c C-r") 'go-remove-unused-imports)))
(add-hook 'go-mode-hook (lambda () (local-set-key (kbd "C-c i") 'go-goto-imports)))
(add-hook 'go-mode-hook (lambda () (local-set-key (kbd "C-c C-f") 'gofmt)))
(add-hook 'go-mode-hook (lambda () (local-set-key (kbd "C-c C-k") 'godoc)))

Also, unlike other actual errors, mouse hover displays information about the respective error, whereas in this case there is no such information.

Am I missing something?

[dominikh]

Are these files all in the same directory? In that case, that isn't a valid package, as you'd have multiple conflicting definitions of main.

[indradhanush]

@dominikh, Yup they are, Hmm, how do I arrange those files then?

[dominikh]

A single directory holds a single package. If you want to have a project with many executables, a common structure is something like /cmd/progA/*.go, /cmd/progB/*.go.

See for example https://code.google.com/p/go/source/browse/?repo=tools#hg%2Fcmd -- the go.tools repository, which contains a number of utilities.

[abhat]

+1. I am having a similar problem. In my case, main.go is the only file in my package directory and is also the only file that has a main function. Mouse-hover results in goflymake showing a tool-tip saying "main re-declared in this block".

[abhat]

A little bit of experimentation and it seems like, if the file is named main.go or has the same name as the pkg directory name for instance if I have a path like: src/github.com/abhat/test_me and I have main() defined in a file called src/github.com/abhat/test_me.go or in a file called src/github.com/abhat/main.go, then goflymake will complain. Are these naming conventions frowned upon by golang?