-dnl Scott Dattalo
-dnl
-dnl This is copied from the NcFTP distribution.
-dnl Author Mike Gleason mgleason@NcFTP.com
-dnl
-dnl This macro will check for the presence and version
-dnl of the readline library. To get it into the aclocal.m4
-dnl file, do this:
+dnl This macro will check for the presence of the readline library.
+dnl To get it into the aclocal.m4 dnl file, do this:
dnl aclocal -I . --verbose
dnl
dnl The --verbose will show all of the files that are searched
dnl for .m4 macros.
-AC_DEFUN([wi_LIB_READLINE], [
-AC_MSG_CHECKING([for GNU Readline library, version 2.0 or newer])
-
-wi_cv_lib_readline=no
-wi_cv_lib_readline_result=no
-ac_save_LIBS="$LIBS"
-# Note: $LIBCURSES is permitted to be empty.
-for LIBREADLINE in "-lreadline" "-lreadline $LIBCURSES" "-lreadline -ltermcap" "-lreadline -lncurses" "-lreadline -lcurses"
-do
- LIBS="$ac_save_LIBS $LIBREADLINE"
- AC_TRY_RUN([
- /* program */
-#include <stdio.h>
-#include <stdlib.h>
-
-main(int argc, char **argv)
-{
- /* Note: don't actually call readline, since it may block;
- * We just want to see if it (dynamic) linked in okay.
- */
- if (argc == 0) /* never true */
- readline(0);
- exit(0);
-}
-],[
- # action if true
- wi_cv_lib_readline=yes
-],[
- # action if false
- wi_cv_lib_readline=no
-],[
- # action if cross compiling
- wi_cv_lib_readline=no
-])
-
- if test "$wi_cv_lib_readline" = yes ; then break ; fi
-done
-
-# Now try it again, to be sure it is recent enough.
-# rl_function_of_keyseq appeared in version 2.0
-#
-dnl AC_CHECK_FUNC(rl_function_of_keyseq, [wi_cv_lib_readline=yes],[
-dnl wi_cv_lib_readline=no;wi_cv_lib_readline_result="no (it is present but too old to use)"
-dnl ])
- AC_TRY_LINK([
- /* includes */
- ],[
- /* function-body */
- readline(0);
- rl_function_of_keyseq(0);
- ],[
- wi_cv_lib_readline=yes
- ],[
- wi_cv_lib_readline=no
- wi_cv_lib_readline_result="no (it is present but too old to use)"
- ])
-
-if test "$wi_cv_lib_readline" = no ; then
- LIBREADLINE=""
- # restore LIBS
- LIBS="$ac_save_LIBS"
-else
- /bin/rm -f readline.ver
- touch readline.ver
-
- AC_TRY_RUN([
- /* program */
-#include <unistd.h>
-#include <sys/types.h>
-#include <stdio.h>
-
-extern char *rl_library_version;
-main()
-{
- FILE *fp;
- double d;
-
- sscanf(rl_library_version, "%lf", &d);
- fp = fopen("readline.ver", "w");
- if (fp == NULL) exit(1);
- if (fprintf(fp, "%s\n", rl_library_version) < 0) exit(1);
- if (fprintf(fp, "%03d\n", (int) (d * 100.0)) < 0) exit(1);
- if (fclose(fp) < 0) exit(1);
- exit(0);
-}
- ],[
- # action if true
- rl_library_version=`sed -n 1,1p readline.ver 2>/dev/null`
- rlver=`sed -n 2,2p readline.ver 2>/dev/null`
- /bin/rm -f readline.ver
- ],[
- # action if false
- rl_library_version=''
- rlver=''
- /bin/rm -f readline.ver
- ],[
- # action if cross compiling
- rl_library_version=''
- rlver=''
- /bin/rm -f readline.ver
- ])
-
- case "$rlver" in
- ???)
- wi_cv_lib_readline_result="yes, installed version is $rl_library_version"
- ;;
- *)
- # Test using current LIBS.
- AC_TRY_LINK([
- /* includes */
- extern int rl_completion_append_character;
- ],[
- /* function-body */
- readline(0);
- rl_completion_append_character = 0;
- ],[
- rlver="210"
- ],[
- rlver="200"
- ])
-
- if test "$rlver" = "210" ; then
- wi_cv_lib_readline_result="yes, version 2.1 or higher"
- else
- wi_cv_lib_readline_result="yes, version 2.0"
- fi
- ;;
- esac
-
- wi_cv_lib_readline=yes
- # restore LIBS
- LIBS="$ac_save_LIBS"
-fi
-AC_MSG_RESULT($wi_cv_lib_readline_result)
-AC_SUBST(LIBREADLINE)
-
-if test "$wi_cv_lib_readline" = yes ; then
- # Now verify that all the headers are installed.
- #
- AC_REQUIRE_CPP()
- unset ac_cv_header_readline_chardefs_h
- unset ac_cv_header_readline_history_h
- unset ac_cv_header_readline_keymaps_h
- unset ac_cv_header_readline_readline_h
- unset ac_cv_header_readline_tilde_h
- AC_CHECK_HEADERS([readline/chardefs.h readline/history.h readline/keymaps.h readline/readline.h readline/tilde.h])
-
- for xxwi in \
- "$ac_cv_header_readline_chardefs_h" \
- "$ac_cv_header_readline_history_h" \
- "$ac_cv_header_readline_keymaps_h" \
- "$ac_cv_header_readline_readline_h" \
- "$ac_cv_header_readline_tilde_h"
- do
- if test "$xxwi" = no ; then
- break
- fi
- done
-
- if test "$xxwi" = no ; then
- AC_MSG_WARN([GNU Readline headers are not installed or could not be found -- GNU Readline will not be used.])
- wi_cv_lib_readline=no
- wi_cv_lib_readline_result="no (headers not installed)"
- else
- AC_DEFINE_UNQUOTED(HAVE_LIBREADLINE, $rlver,[Readline])
- fi
-fi
- dnl Check to see if we have a namespace clean version of readline
- dnl or not. At least FreeBSD 4.9 ships with non-ns-clean readline.
- if test "$wi_cv_lib_readline" = "yes" ; then
- ac_save_LIBS="$LIBS"
- LIBS="$ac_save_LIBS $LIBREADLINE"
- AC_CHECK_FUNCS(rl_completion_matches completion_matches)
- # restore LIBS
- LIBS="$ac_save_LIBS"
- fi
- dnl Check to see if rl_callback_handler_install takes a cast
- AC_MSG_CHECKING([to see if readline callbacks take a cast])
- ac_save_LIBS="$LIBS"
- LIBS="$ac_save_LIBS $LIBREADLINE"
- ac_save_CC="$CC"
- CC="$CXX"
- AC_TRY_LINK([
-#include <stdio.h>
-#include <readline/readline.h>
-void func(void) { return; }
- ],[
- rl_callback_handler_install(">", (void(*)(char*))func);
- ],[
- AC_DEFINE(READLINE_CB_TAKES_CAST, 1, [callbacks take a cast])
- AC_MSG_RESULT([yes])
- ],[
- AC_MSG_RESULT([no])
- ])
- # restore LIBS
- LIBS="$ac_save_LIBS"
- CC="$ac_save_CC"
+AC_DEFUN([wi_LIB_READLINE], [
+ dnl check for the readline.h header file
+ AC_CHECK_HEADER(readline/readline.h)
+
+ if test "$ac_cv_header_readline_readline_h" = yes; then
+ dnl check for the readline library
+
+ ac_save_LIBS="$LIBS"
+ # Note: $LIBCURSES is permitted to be empty.
+
+ for LIBREADLINE in "-lreadline.dll" "-lreadline" "-lreadline $LIBCURSES" "-lreadline -ltermcap" "-lreadline -lncurses" "-lreadline -lcurses"
+ do
+ AC_MSG_CHECKING([for GNU Readline library])
+
+ LIBS="$ac_save_LIBS $LIBREADLINE"
+
+ AC_TRY_LINK([
+ /* includes */
+ #include <stdio.h>
+ #include <readline/readline.h>
+ ],[
+ /* function-body */
+ readline(NULL);
+ rl_function_of_keyseq(NULL, NULL, NULL);
+ ],[
+ wi_cv_lib_readline=yes
+ wi_cv_lib_readline_result="$LIBREADLINE"
+ ],[
+ wi_cv_lib_readline=no
+ wi_cv_lib_readline_result=no
+ ])
+
+ if test "$wi_cv_lib_readline" = yes; then
+ AC_MSG_RESULT($wi_cv_lib_readline_result)
+ AC_SUBST(LIBREADLINE)
+ AC_DEFINE_UNQUOTED(HAVE_LIBREADLINE, 1, [Readline])
+ break
+ fi
+ done
+
+ LIBS="$ac_save_LIBS"
+ fi
])
-dnl
-dnl
projects / fw / sdcc / commitdiff