libvirt/m4/virt-readline.m4

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dnl The readline library
dnl
dnl Copyright (C) 2005-2013 Red Hat, Inc.
dnl
dnl This library is free software; you can redistribute it and/or
dnl modify it under the terms of the GNU Lesser General Public
dnl License as published by the Free Software Foundation; either
dnl version 2.1 of the License, or (at your option) any later version.
dnl
dnl This library is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
dnl Lesser General Public License for more details.
dnl
dnl You should have received a copy of the GNU Lesser General Public
dnl License along with this library. If not, see
dnl <http://www.gnu.org/licenses/>.
dnl
AC_DEFUN([LIBVIRT_ARG_READLINE],[
LIBVIRT_ARG_WITH_FEATURE([READLINE], [readline], [check])
])
AC_DEFUN([LIBVIRT_CHECK_READLINE],[
extra_LIBS=
lv_saved_libs=$LIBS
if test "x$with_readline" != xno; then
# Linking with -lreadline may require some termcap-related code, e.g.,
# from one of the following libraries. Add it to LIBS before using
# canned library checks; then verify later if it was needed.
LIBS=
AC_SEARCH_LIBS([tgetent], [ncurses curses termcap termlib])
case $LIBS in
no*) ;; # handle "no" and "none required"
*) # anything else is a -lLIBRARY
extra_LIBS=$LIBS ;;
esac
LIBS="$lv_saved_libs $extra_LIBS"
fi
AC_CHECK_DECLS([rl_completion_quote_character],
[], [],
[[#include <stdio.h>
#include <readline/readline.h>]])
if test "$ac_cv_have_decl_rl_completion_quote_character" = "no" ; then
if test "$with_readline" = "yes" ; then
AC_MSG_ERROR([readline is missing rl_completion_quote_character])
else
with_readline=no;
fi
fi
# The normal library check...
LIBVIRT_CHECK_LIB([READLINE], [readline], [readline], [readline/readline.h])
# Touch things up to avoid $extra_LIBS, if possible. Test a second
# function, to ensure we aren't being confused by caching.
LIBS=$lv_saved_libs
AC_CHECK_LIB([readline], [rl_initialize],
virsh: workaround readline prototypes warnings When building with clang 4.0.0, virsh build fails like this: gmake[3]: Entering directory '/usr/home/novel/code/libvirt/tools' CC virsh-virsh.o In file included from virsh.c:45: In file included from /usr/local/include/readline/readline.h:31: /usr/local/include/readline/rltypedefs.h:35:22: error: this function declaration is not a prototype [-Werror,-Wstrict-prototypes] typedef int Function () __attribute__ ((deprecated)); ^ void /usr/local/include/readline/rltypedefs.h:36:24: error: this function declaration is not a prototype [-Werror,-Wstrict-prototypes] typedef void VFunction () __attribute__ ((deprecated)); ^ void /usr/local/include/readline/rltypedefs.h:37:26: error: this function declaration is not a prototype [-Werror,-Wstrict-prototypes] typedef char *CPFunction () __attribute__ ((deprecated)); ^ void /usr/local/include/readline/rltypedefs.h:38:28: error: this function declaration is not a prototype [-Werror,-Wstrict-prototypes] typedef char **CPPFunction () __attribute__ ((deprecated)); ^ void In file included from virsh.c:45: /usr/local/include/readline/readline.h:385:23: error: this function declaration is not a prototype [-Werror,-Wstrict-prototypes] extern int rl_message (); ^ void 5 errors generated. gmake[3]: *** [Makefile:2823: virsh-virsh.o] Error 1 Fix that by adding -D_FUNCTION_DEF to READLINE_CFLAGS to fix *Function related warnings and add a check for stdarg.h so we have HAVE_STDARG_H defined that's needed by the readline headers to use proper rl_message declaration. Bug report on the readline mailing list: http://lists.gnu.org/archive/html/bug-readline/2017-05/msg00004.html
2017-05-26 17:43:42 +00:00
[READLINE_CFLAGS="-D_FUNCTION_DEF $READLINE_CFLAGS"
AC_SUBST(READLINE_CFLAGS)],
[READLINE_LIBS="$READLINE_LIBS $extra_LIBS"])
LIBS=$lv_saved_libs
])
AC_DEFUN([LIBVIRT_RESULT_READLINE],[
LIBVIRT_RESULT_LIB([READLINE])
])