Comment 5 for bug 1574349

You must install pkg-config package too.

But now another error on [3] step.

$ sudo apt-get install gitlab

...

Using devise-two-factor 2.0.1
Bundle complete! 121 Gemfile dependencies, 261 gems now installed.
Use `bundle show [gemname]` to see where a bundled gem is installed.
Running final rake tasks and tweaks...
Creating secrets.yml...
Initializing database...
fatal: Not a git repository (or any of the parent directories): .git
-- enable_extension("plpgsql")
   -> 0.0093s
-- create_table("abuse_reports", {:force=>:cascade})
   -> 0.0070s
-- create_table("appearances", {:force=>:cascade})

....

- add_index("users_star_projects", ["user_id"], {:name=>"index_users_star_projects_on_user_id", :using=>:btree})
   -> 0.0026s
-- create_table("web_hooks", {:force=>:cascade})
   -> 0.0059s
-- add_index("web_hooks", ["created_at", "id"], {:name=>"index_web_hooks_on_created_at_and_id", :using=>:btree})
   -> 0.0029s
-- add_index("web_hooks", ["project_id"], {:name=>"index_web_hooks_on_project_id", :using=>:btree})
   -> 0.0025s
-- initialize_schema_migrations_table()
   -> 0.0061s
fatal: Not a git repository (or any of the parent directories): .git

== Seed from /usr/share/gitlab/db/fixtures/production/001_admin.rb

Administrator account created:

login.........root
password......5iveL!fe
fatal: Not a git repository (or any of the parent directories): .git
fatal: Not a git repository (or any of the parent directories): .git
fatal: Not a git repository (or any of the parent directories): .git
fatal: Not a git repository (or any of the parent directories): .git
mkdir -p /var/lib/gitlab/repositories/: OK
mkdir -p /var/lib/gitlab/.ssh: OK
chmod 700 /var/lib/gitlab/.ssh: OK
touch /var/lib/gitlab/.ssh/authorized_keys: OK
chmod 600 /var/lib/gitlab/.ssh/authorized_keys: OK
chmod ug+rwX,o-rwx /var/lib/gitlab/repositories/: OK
Precompiling assets...
fatal: Not a git repository (or any of the parent directories): .git
I, [2016-05-04T16:07:00.221066 #9140] INFO -- : Writing /usr/share/gitlab/public/assets/print-6939eb32d7a168d8fe54b11c4873498ba343870a6f7d2eb15147f7035a0154e2.css
I, [2016-05-04T16:07:00.223750 #9140] INFO -- : Writing /usr/share/gitlab/public/assets/select2-9e7107dd0b2c552720713e261db7148d19877ccea717d7f4823c7471cd1cdee3.png

...

I, [2016-05-04T16:07:57.258267 #9140] INFO -- : Writing /usr/share/gitlab/public/assets/bootstrap/glyphicons-halflings-regular-42f60659d265c1a3c30f9fa42abcbb56bd4a53af4d83d316d6dd7a36903c43e5.svg
I, [2016-05-04T16:07:57.260178 #9140] INFO -- : Writing /usr/share/gitlab/public/assets/bootstrap/glyphicons-halflings-regular-e395044093757d82afcb138957d06a1ea9361bdcf0b442d06a18a8051af57456.ttf
I, [2016-05-04T16:07:57.262032 #9140] INFO -- : Writing /usr/share/gitlab/public/assets/bootstrap/glyphicons-halflings-regular-a26394f7ede100ca118eff2eda08596275a9839b959c226e15439557a5a80742.woff
I, [2016-05-04T16:07:57.263734 #9140] INFO -- : Writing /usr/share/gitlab/public/assets/bootstrap/glyphicons-halflings-regular-fe185d11a49676890d47bb783312a0cda5a44c4039214094e7957b4c040ef11c.woff2
Failed to start gitlab.target: Unit gitlab.target is masked.
dpkg: error processing gitlab package (--configure):