tools/ax_lib_readline.m4

   1 dnl Copyright (C) 1987-2014 Free Software Foundation, Inc.
   2 dnl
   3 dnl This program is free software: you can redistribute it and/or modify
   4 dnl it under the terms of the GNU General Public License as published by
   5 dnl the Free Software Foundation, either version 3 of the License, or
   6 dnl (at your option) any later version.
   7 dnl
   8 dnl This program is distributed in the hope that it will be useful,
   9 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 dnl GNU General Public License for more details.
  12 dnl
  13 dnl You should have received a copy of the GNU General Public License
  14 dnl along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15 dnl
  16 dnl Taken from http://git.savannah.gnu.org/cgit/readline.git/tree/examples/autoconf/
  17 dnl commit 835a39225c6bd4784c0d7f775b0cd44dd7c57f35 (Readline 6.3, version 2.73)
  18 dnl
  19 dnl Configuration of --with-readline and result check at EOF.
  20
  21 AC_DEFUN([BASH_CHECK_LIB_TERMCAP],
  22 [
  23 # save cpp and ld options
  24 _save_CFLAGS="$CFLAGS"
  25 _save_LDFLAGS="$LDFLAGS"
  26 _save_LIBS="$LIBS"
  27
  28 if test "X$bash_cv_termcap_lib" = "X"; then
  29 _bash_needmsg=yes
  30 else
  31 AC_MSG_CHECKING(which library has the termcap functions)
  32 _bash_needmsg=
  33 fi
  34 AC_CACHE_VAL(bash_cv_termcap_lib,
  35 [AC_CHECK_FUNC(tgetent, bash_cv_termcap_lib=libc,
  36   [AC_CHECK_LIB(termcap, tgetent, bash_cv_termcap_lib=libtermcap,
  37     [AC_CHECK_LIB(tinfo, tgetent, bash_cv_termcap_lib=libtinfo,
  38         bash_cv_termcap_lib=gnutermcap
  39 if test "$ax_cv_curses_which" = "ncursesw"; then
  40         [AC_CHECK_LIB(ncursesw, tgetent, bash_cv_termcap_lib=libncursesw)]
  41 elif test "$ax_cv_curses_which" = "ncurses"; then
  42         [AC_CHECK_LIB(ncurses, tgetent, bash_cv_termcap_lib=libncurses)]
  43 elif test "$ax_cv_curses_which" = "plaincurses"; then
  44         [AC_CHECK_LIB(curses, tgetent, bash_cv_termcap_lib=libcurses)]
  45 fi
  46 )])])])
  47 if test "X$_bash_needmsg" = "Xyes"; then
  48 AC_MSG_CHECKING(which library has the termcap functions)
  49 fi
  50 AC_MSG_RESULT(using $bash_cv_termcap_lib)
  51 if test $bash_cv_termcap_lib = gnutermcap && test -z "$prefer_curses"; then
  52 LDFLAGS="$LDFLAGS -L./lib/termcap"
  53 TERMCAP_LIB="./lib/termcap/libtermcap.a"
  54 TERMCAP_DEP="./lib/termcap/libtermcap.a"
  55 elif test $bash_cv_termcap_lib = libtermcap && test -z "$prefer_curses"; then
  56 TERMCAP_LIB=-ltermcap
  57 TERMCAP_DEP=
  58 elif test $bash_cv_termcap_lib = libtinfo; then
  59 TERMCAP_LIB=-ltinfo
  60 TERMCAP_DEP=
  61 elif test $bash_cv_termcap_lib = libncursesw; then
  62 TERMCAP_LIB=-lncursesw
  63 TERMCAP_DEP=
  64 elif test $bash_cv_termcap_lib = libncurses; then
  65 TERMCAP_LIB=-lncurses
  66 TERMCAP_DEP=
  67 elif test $bash_cv_termcap_lib = libc; then
  68 TERMCAP_LIB=
  69 TERMCAP_DEP=
  70 else
  71 TERMCAP_LIB=-lcurses
  72 TERMCAP_DEP=
  73 fi
  74
  75 CFLAGS="$_save_CFLAGS"
  76 LDFLAGS="$_save_LDFLAGS"
  77 LIBS="$_save_LIBS"
  78 ])
  79
  80 AC_DEFUN([RL_LIB_READLINE_VERSION],
  81 [
  82 AC_REQUIRE([BASH_CHECK_LIB_TERMCAP])
  83
  84 AC_MSG_CHECKING([version of installed readline library])
  85
  86 # What a pain in the ass this is.
  87
  88 # save cpp and ld options
  89 _save_CFLAGS="$CFLAGS"
  90 _save_LDFLAGS="$LDFLAGS"
  91 _save_LIBS="$LIBS"
  92
  93 # Don't set ac_cv_rl_prefix if the caller has already assigned a value.  This
  94 # allows the caller to do something like $_rl_prefix=$withval if the user
  95 # specifies --with-installed-readline=PREFIX as an argument to configure
  96
  97 if test -z "$ac_cv_rl_prefix"; then
  98 test "x$prefix" = xNONE && ac_cv_rl_prefix=$ac_default_prefix || ac_cv_rl_prefix=${prefix}
  99 fi
 100
 101 eval ac_cv_rl_includedir=${ac_cv_rl_prefix}/include
 102 eval ac_cv_rl_libdir=${ac_cv_rl_prefix}/lib
 103
 104 LIBS="$LIBS -lreadline ${TERMCAP_LIB}"
 105 CFLAGS="$CFLAGS -I${ac_cv_rl_includedir}"
 106 LDFLAGS="$LDFLAGS -L${ac_cv_rl_libdir}"
 107
 108 AC_CACHE_VAL(ac_cv_rl_version,
 109 [AC_RUN_IFELSE([AC_LANG_SOURCE([[
 110 #include <stdio.h>
 111 #include <readline/readline.h>
 112
 113 extern int rl_gnu_readline_p;
 114
 115 main()
 116 {
 117         FILE *fp;
 118         fp = fopen("conftest.rlv", "w");
 119         if (fp == 0)
 120                 exit(1);
 121         if (rl_gnu_readline_p != 1)
 122                 fprintf(fp, "0.0\n");
 123         else
 124                 fprintf(fp, "%s\n", rl_library_version ? rl_library_version : "0.0");
 125         fclose(fp);
 126         exit(0);
 127 }
 128 ]])],
 129 ac_cv_rl_version=`cat conftest.rlv`,
 130 ac_cv_rl_version='0.0',
 131 ac_cv_rl_version='4.2')])
 132
 133 CFLAGS="$_save_CFLAGS"
 134 LDFLAGS="$_save_LDFLAGS"
 135 LIBS="$_save_LIBS"
 136
 137 RL_MAJOR=0
 138 RL_MINOR=0
 139
 140 # (
 141 case "$ac_cv_rl_version" in
 142 2*|3*|4*|5*|6*|7*|8*|9*)
 143         RL_MAJOR=`echo $ac_cv_rl_version | sed 's:\..*$::'`
 144         RL_MINOR=`echo $ac_cv_rl_version | sed -e 's:^.*\.::' -e 's:[[a-zA-Z]]*$::'`
 145         ;;
 146 esac
 147
 148 # (((
 149 case $RL_MAJOR in
 150 [[0-9][0-9]])   _RL_MAJOR=$RL_MAJOR ;;
 151 [[0-9]])        _RL_MAJOR=0$RL_MAJOR ;;
 152 *)              _RL_MAJOR=00 ;;
 153 esac
 154
 155 # (((
 156 case $RL_MINOR in
 157 [[0-9][0-9]])   _RL_MINOR=$RL_MINOR ;;
 158 [[0-9]])        _RL_MINOR=0$RL_MINOR ;;
 159 *)              _RL_MINOR=00 ;;
 160 esac
 161
 162 RL_VERSION="0x${_RL_MAJOR}${_RL_MINOR}"
 163
 164 # Readline versions greater than 4.2 have these defines in readline.h
 165
 166 if test $ac_cv_rl_version = '0.0' ; then
 167         AC_MSG_RESULT([none])
 168         AC_MSG_WARN([Could not test version of installed readline library.])
 169 elif test $RL_MAJOR -gt 4 || { test $RL_MAJOR = 4 && test $RL_MINOR -gt 2 ; } ; then
 170         # set these for use by the caller
 171         RL_PREFIX=$ac_cv_rl_prefix
 172         RL_LIBDIR=$ac_cv_rl_libdir
 173         RL_INCLUDEDIR=$ac_cv_rl_includedir
 174         AC_MSG_RESULT($ac_cv_rl_version)
 175 else
 176
 177 AC_DEFINE_UNQUOTED(RL_READLINE_VERSION, $RL_VERSION, [encoded version of the installed readline library])
 178 AC_DEFINE_UNQUOTED(RL_VERSION_MAJOR, $RL_MAJOR, [major version of installed readline library])
 179 AC_DEFINE_UNQUOTED(RL_VERSION_MINOR, $RL_MINOR, [minor version of installed readline library])
 180
 181 AC_SUBST(RL_VERSION)
 182 AC_SUBST(RL_MAJOR)
 183 AC_SUBST(RL_MINOR)
 184
 185 # set these for use by the caller
 186 RL_PREFIX=$ac_cv_rl_prefix
 187 RL_LIBDIR=$ac_cv_rl_libdir
 188 RL_INCLUDEDIR=$ac_cv_rl_includedir
 189
 190 AC_MSG_RESULT($ac_cv_rl_version)
 191
 192 fi
 193 ])
 194
 195 AC_DEFUN([AX_LIB_READLINE], [
 196   RL_VERSION_REQUIRED="$1"
 197   RL_MAJOR_REQUIRED="$(echo "$1" | sed -n 's/\([[]0-9[]]*\)[[].[]]\([[]0-9[]]*\)/\1/p')"
 198   RL_MINOR_REQUIRED="$(echo "$1" | sed -n 's/\([[]0-9[]]*\)[[].[]]\([[]0-9[]]*\)/\2/p')"
 199   RL_MAJOR=0
 200   RL_MINOR=0
 201
 202   AC_ARG_WITH([readline], [AS_HELP_STRING([--with-readline=DIR],
 203         [search for readline in DIR/include and DIR/lib])],
 204         [ac_cv_rl_prefix=$with_readline])
 205
 206   AC_CHECK_HEADERS([readline/readline.h], [
 207     AC_CHECK_HEADERS([readline/history.h], [
 208       RL_LIB_READLINE_VERSION
 209     ])
 210   ])
 211
 212   if test $RL_MAJOR -ge $RL_MAJOR_REQUIRED || {
 213      test $RL_MAJOR = $RL_MAJOR_REQUIRED && test $RL_MINOR -ge $RL_MINOR_REQUIRED ; } ; then
 214     LIBS="$LIBS -lreadline ${TERMCAP_LIB}"
 215     CFLAGS="$CFLAGS -I${RL_INCLUDEDIR}"
 216     LDFLAGS="$LDFLAGS -L${RL_LIBDIR}"
 217
 218     AC_DEFINE(HAVE_READLINE, 1, [Define if you have a GNU readline compatible library])
 219
 220   elif test -n "$ac_cv_rl_prefix"; then
 221     AC_MSG_WARN([Minimum required version of readline is $RL_VERSION_REQUIRED])
 222   fi
 223 ])