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readline: improve configure output
From: |
Bruno Haible |
Subject: |
readline: improve configure output |
Date: |
Sun, 28 Nov 2010 02:35:38 +0100 |
User-agent: |
KMail/1.9.9 |
On a Solaris 11 express machine, I'm seeing this output from configure:
checking for readline... -ltermcap
which is, at first sight, confusing. Here's an improvement to change this
output to
checking for readline... yes, requires -ltermcap
2010-11-27 Bruno Haible <address@hidden>
readline: Improve configure output.
* m4/readline.m4 (gl_FUNC_READLINE): Make the
"checking for readline..." result understandable.
--- m4/readline.m4.orig Sun Nov 28 02:30:49 2010
+++ m4/readline.m4 Sun Nov 28 02:27:16 2010
@@ -1,4 +1,4 @@
-# readline.m4 serial 7
+# readline.m4 serial 8
dnl Copyright (C) 2005, 2006, 2009, 2010 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@@ -40,7 +40,12 @@
AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h>
#include <readline/readline.h>]],
[[readline((char*)0);]])],
- [gl_cv_lib_readline=" -l$extra_lib"])
+ [if test -n "$extra_lib"; then
+ gl_cv_lib_readline="yes, requires -l$extra_lib"
+ else
+ gl_cv_lib_readline="yes"
+ fi
+ ])
if test "$gl_cv_lib_readline" != no; then
break
fi
@@ -50,9 +55,10 @@
if test "$gl_cv_lib_readline" != no; then
AC_DEFINE([HAVE_READLINE], [1], [Define if you have the readline library.])
- if test "$gl_cv_lib_readline" != " -l"; then
- LIBREADLINE="$LIBREADLINE$gl_cv_lib_readline"
- LTLIBREADLINE="$LTLIBREADLINE$gl_cv_lib_readline"
+ extra_lib=`echo "$gl_cv_lib_readline" | sed -n -e 's/yes, requires //p'`
+ if test -n "$extra_lib"; then
+ LIBREADLINE="$LIBREADLINE $extra_lib"
+ LTLIBREADLINE="$LTLIBREADLINE $extra_lib"
fi
AC_MSG_CHECKING([how to link with libreadline])
AC_MSG_RESULT([$LIBREADLINE])
@@ -68,7 +74,7 @@
AC_CHECK_HEADERS([readline/readline.h])
- if test $gl_cv_lib_readline = no; then
+ if test "$gl_cv_lib_readline" = no; then
AC_LIBOBJ([readline])
gl_PREREQ_READLINE
fi
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