autotools plugin failed with env: ‘./bootstrap’: Permission denied

[Leo Arias]

I was trying to snap erlang, which has a bootstrap directory in the source: https://github.com/erlang/otp/tree/maint/bootstrap

So when I run the autotools plugin, it finds that bootstrap exists, and tries to run it.

In addition to checking if it exists, the plugin should check if it is a file.

To reproduce:

$ mkdir /tmp/test
$ cd /tmp/test
$ snapcraft init
Edit the plugin to be autotools, and add:
source: .
$ mkdir bootstrap
$ snapcraft
Preparing to pull my-part
Pulling my-part
Preparing to build my-part
Building my-part
env NOCONFIGURE=1 ./bootstrap
env: ‘./bootstrap’: Permission denied
Command '['/bin/sh', '/tmp/tmp285x9r0j', 'env', 'NOCONFIGURE=1', './bootstrap']' returned non-zero exit status 126

[Sergio Schvezov (sergiusens)]

https://github.com/snapcore/snapcraft/pull/803