An ocaml error

gistfile1.txt

justgage@arch ~> opam install calendar                                                                                                                                                    (7)TODO:  Figure out dates for preposal 

=-=- Synchronising pinned packages =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
[calendar.2.03.2] Synchronizing with /home/justgage/Dropbox/school-linux/now/cs499-senior-project
The following actions will be performed:
 - install   calendar.2.03.2*
=== 1 to install ===

=-=- Synchronizing package archives -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
[calendar.2.03.2] Synchronizing with /home/justgage/Dropbox/school-linux/now/cs499-senior-project

=-=- Installing packages =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Building calendar.2.03.2:
  ./configure
  make
  make install
[ERROR] The compilation of calendar.2.03.2 failed.
Removing calendar.2.03.2.
  ocamlfind remove calendar


#=== ERROR while installing calendar.2.03.2 ===================================#
Internal error:
  "./configure": command not found.