Imported Upstream version 2.6.0

[debian/amanda] / config / amanda / readline.m4

diff --git a/config/amanda/readline.m4 b/config/amanda/readline.m4
new file mode 100644 (file)
index 0000000..dbf8be5
--- /dev/null
+++ b/config/amanda/readline.m4
@@ -0,0 +1,75 @@
+# SYNOPSIS
+#
+#   AMANDA_CHECK_READLINE
+#
+# OVERVIEW
+#
+#   Check for readline support.  Defines HAVE_READLINE if readline
+#   is available, and also checks for a number of readline headers and
+#   adds readline libraries to READLINE_LIBS.
+#
+#   See common-src/util.{c,h}.
+#
+AC_DEFUN([AMANDA_CHECK_READLINE], [
+    AC_ARG_WITH(readline,
+    dnl no initial space here, so the results line up properly
+AS_HELP_STRING([--with-readline], [require readline support (for amrecover)])
+AS_HELP_STRING([--without-readline], [don't search for readline]),
+        [ 
+            case "$withval" in
+                y | ye | yes | n | no) : ;;
+                *) AC_MSG_ERROR([*** --with-readline does not take a value])
+            esac
+            want_readline="$withval"
+        ], [
+            want_readline="maybe" # meaning "only if we can find it"
+        ])
+
+    # unless the user said "no", look for readline.
+    if test x"$want_readline" != x"no"; then
+        # we need a tgetent() somewhere..
+        proceed="false"
+        AC_CHECK_LIB(termcap, tgetent, [
+            READLINE_LIBS="-ltermcap"
+            proceed="true"
+        ], [
+            AC_CHECK_LIB(curses, tgetent, [
+                READLINE_LIBS="-lcurses"
+                proceed="true"
+            ], [
+                AC_CHECK_LIB(ncurses, tgetent, [
+                    READLINE_LIBS="-lncurses"
+                    proceed="true"
+                ])
+            ])
+        ])
+
+        if $proceed; then
+            proceed="false"
+            AC_CHECK_HEADERS( history.h readline.h readline/history.h readline/readline.h, [
+                # found at least one of the headers, so we can proceed.
+                proceed="true"
+            ])
+        fi
+
+        if $proceed; then
+            proceed="false"
+            AC_CHECK_LIB(readline,readline, [
+                READLINE_LIBS="-lreadline $READLINE_LIBS"
+                proceed="true"
+            ],,$READLINE_LIBS)
+        fi
+
+        if $proceed; then
+            # we have readline!
+            AC_DEFINE(HAVE_READLINE, 1, [System has readline support (headers and libraries)])
+        else
+            # no readline.  if the user *really* wanted it, bail out.
+            if test x"$want_readline" = x"yes"; then
+                AC_MSG_ERROR([*** No readline implementation found.  Try using --with-libraries and --with-includes])
+            fi
+            READLINE_LIBS=""
+        fi
+    fi
+    AC_SUBST(READLINE_LIBS)
+])