AC_INIT([calculer], [1.0.0])
AC_CONFIG_HEADERS([config.h])
AM_INIT_AUTOMAKE([-Wall -Werror, foreign])

AC_PROG_CC

AH_TEMPLATE([USE_READLINE], [do we use GNU Readline ?])
AC_DEFUN([LINENOISE_URL], [https://github.com/antirez/linenoise.git])

AC_CHECK_LIB([readline],
  [readline],
  [AC_DEFINE([USE_READLINE], [1])
  use_readline=true
  AC_ARG_WITH([readline],
    AS_HELP_STRING([--without-readline],
      [do not use GNU Readline, and use the Linenoise library
      available at LINENOISE_URL]),
    if test ! -d "./linenoise/"
    then
      git clone --depth=1 'LINENOISE_URL'
    fi
    AC_DEFINE([USE_READLINE], [0])
    use_readline=false
  )],
  [AC_DEFINE([USE_READLINE], [0])
  use_readline=true]
)

AM_CONDITIONAL([USE_READLINE_COND], [test x$use_readline = xtrue])

AC_ARG_ENABLE([debug],
  [AS_HELP_STRING([--enable-debug],
    [enable debugging, only useful for development])],
  [debug=true],
  [debug=false]
)

AM_CONDITIONAL([DEBUG_COND], [test x$debug = xtrue])

AC_CONFIG_FILES([
  Makefile
  src/Makefile
])
AC_OUTPUT