Imported Upstream version 2.9.0
[debian/cc1111] / debugger / mcs51 / acinclude.m4
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 ])