Required extensions to build:
bash
submitqc
qt-4.x-bin qt-4.x-base qt-4.x-dev fontconfig fontconfig-dev glib2-dev
gtk2-dev gtk2 
fltk-1.3-dev 
libcap-dev
ncurses ncurses-dev
libX11-dev xorg-proto

Source URL:
   https://www.gnupg.org/ftp/gcrypt/pinentry/pinentry-0.9.1.tar.bz2

Notes:
Patched (pinentry-0.9.1-1-fltk.patch) for support FLTK
Patched (pinentry-0.9.1-3-configure-qt4.patch) for support qt4 from /usr/local

Additional configure options:
  Revision:  0.9.1  (release)
  Platform:  i686-pc-linux-gnu

  Curses Pinentry ..: yes
  TTY Pinentry .....: yes
  GTK+-2 Pinentry ..: yes
  Qt4 Pinentry .....: yes
  W32 Pinentry .....: no
  FLTK Pinentry ....: yes

  Fallback to Curses: yes
  Default Pinentry .: pinentry-fltk