Annotation of embedaddon/readline/examples/autoconf/wi_LIB_READLINE, revision 1.1
1.1 ! misho 1: dnl Borut Razem
! 2: dnl
! 3: dnl This macro checks for the presence of the readline library.
! 4: dnl It works also in cross-compilation environment.
! 5: dnl
! 6: dnl To get it into the aclocal.m4 dnl file, do this:
! 7: dnl aclocal -I . --verbose
! 8: dnl
! 9: dnl The --verbose will show all of the files that are searched
! 10: dnl for .m4 macros.
! 11:
! 12: AC_DEFUN([wi_LIB_READLINE], [
! 13: dnl check for the readline.h header file
! 14:
! 15: AC_CHECK_HEADER(readline/readline.h)
! 16:
! 17: if test "$ac_cv_header_readline_readline_h" = yes; then
! 18: dnl check the readline version
! 19:
! 20: cat > conftest.$ac_ext <<EOF
! 21: #include <stdio.h>
! 22: #include <readline/readline.h>
! 23: wi_LIB_READLINE_VERSION RL_VERSION_MAJOR RL_VERSION_MINOR
! 24: EOF
! 25:
! 26: wi_READLINE_VERSION=$($CPP $CPPFLAGS conftest.$ac_ext | sed -n -e "s/^wi_LIB_READLINE_VERSION *\([[0-9\]][[0-9\]]*\) *\([[0-9\]][[0-9\]]*\)$/\1.\2/p")
! 27: rm -rf conftest*
! 28:
! 29: if test -n "$wi_READLINE_VERSION"; then
! 30: wi_MAJOR=$(expr $wi_READLINE_VERSION : '\([[0-9]][[0-9]]*\)\.')
! 31: wi_MINOR=$(expr $wi_READLINE_VERSION : '[[0-9]][[0-9]]*\.\([[0-9]][[0-9]]*$\)')
! 32: if test $wi_MINOR -lt 10; then
! 33: wi_MINOR=$(expr $wi_MINOR \* 10)
! 34: fi
! 35: wi_READLINE_VERSION=$(expr $wi_MAJOR \* 100 + $wi_MINOR)
! 36: else
! 37: wi_READLINE_VERSION=-1
! 38: fi
! 39:
! 40: dnl check for the readline library
! 41:
! 42: ac_save_LIBS="$LIBS"
! 43: # Note: $LIBCURSES is permitted to be empty.
! 44:
! 45: for LIBREADLINE in "-lreadline.dll" "-lreadline" "-lreadline $LIBCURSES" "-lreadline -ltermcap" "-lreadline -lncurses" "-lreadline -lcurses"
! 46: do
! 47: AC_MSG_CHECKING([for GNU Readline library $LIBREADLINE])
! 48:
! 49: LIBS="$ac_save_LIBS $LIBREADLINE"
! 50:
! 51: AC_TRY_LINK([
! 52: /* includes */
! 53: #include <stdio.h>
! 54: #include <readline/readline.h>
! 55: ],[
! 56: /* function-body */
! 57: int dummy = rl_completion_append_character; /* rl_completion_append_character appeared in version 2.1 */
! 58: readline(NULL);
! 59: ],[
! 60: wi_cv_lib_readline=yes
! 61: AC_MSG_RESULT(yes)
! 62: ],[
! 63: wi_cv_lib_readline=no
! 64: AC_MSG_RESULT(no)
! 65: ])
! 66:
! 67: if test "$wi_cv_lib_readline" = yes; then
! 68: AC_SUBST(LIBREADLINE)
! 69: AC_DEFINE_UNQUOTED(HAVE_LIBREADLINE, $wi_READLINE_VERSION, [Readline])
! 70: break
! 71: fi
! 72: done
! 73:
! 74: LIBS="$ac_save_LIBS"
! 75: fi
! 76: ])
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