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SoftEtherVPN/autotools/ax_with_curses.m4
Darik Horn c5e5d7e93c Create autotools plumbing for SoftEther. 
Add autoconf and automake capabilities to SoftEther so that it can be built
like this:

	# autoreconf --force --install
	# ./configure
	# make install DESTDIR=/tmp/softether

All standard configure parameters are supported, plus:

	# ./configure --enable-debug

Autotools support makes porting, cross compiling, and optimization much easier.

These GNU autoconf-archive components are used for dependency checking:

  * ax_check_openssl.m4
  * ax_check_zlib.m4
  * ax_lib_readline.m4
  * ax_pthread.m4
  * ax_with_curses.m4

NB: http://www.gnu.org/software/autoconf-archive/
2014-10-03 13:28:30 -04:00

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# ===========================================================================
# http://www.gnu.org/software/autoconf-archive/ax_with_curses.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_WITH_CURSES
#
# DESCRIPTION
#
# This macro checks whether a SysV or X/Open-compatible Curses library is
# present, along with the associated header file. The NcursesW
# (wide-character) library is searched for first, followed by Ncurses,
# then the system-default plain Curses. The first library found is the
# one returned.
#
# The following options are understood: --with-ncursesw, --with-ncurses,
# --without-ncursesw, --without-ncurses. The "--with" options force the
# macro to use that particular library, terminating with an error if not
# found. The "--without" options simply skip the check for that library.
# The effect on the search pattern is:
#
# (no options) - NcursesW, Ncurses, Curses
# --with-ncurses --with-ncursesw - NcursesW only [*]
# --without-ncurses --with-ncursesw - NcursesW only [*]
# --with-ncursesw - NcursesW only [*]
# --with-ncurses --without-ncursesw - Ncurses only [*]
# --with-ncurses - NcursesW, Ncurses [**]
# --without-ncurses --without-ncursesw - Curses only
# --without-ncursesw - Ncurses, Curses
# --without-ncurses - NcursesW, Curses
#
# [*] If the library is not found, abort the configure script.
#
# [**] If the second library (Ncurses) is not found, abort configure.
#
# The following preprocessor symbols may be defined by this macro if the
# appropriate conditions are met:
#
# HAVE_CURSES - if any SysV or X/Open Curses library found
# HAVE_CURSES_ENHANCED - if library supports X/Open Enhanced functions
# HAVE_CURSES_COLOR - if library supports color (enhanced functions)
# HAVE_CURSES_OBSOLETE - if library supports certain obsolete features
# HAVE_NCURSESW - if NcursesW (wide char) library is to be used
# HAVE_NCURSES - if the Ncurses library is to be used
#
# HAVE_CURSES_H - if <curses.h> is present and should be used
# HAVE_NCURSESW_H - if <ncursesw.h> should be used
# HAVE_NCURSES_H - if <ncurses.h> should be used
# HAVE_NCURSESW_CURSES_H - if <ncursesw/curses.h> should be used
# HAVE_NCURSES_CURSES_H - if <ncurses/curses.h> should be used
#
# (These preprocessor symbols are discussed later in this document.)
#
# The following output variable is defined by this macro; it is precious
# and may be overridden on the ./configure command line:
#
# CURSES_LIB - library to add to xxx_LDADD
#
# The library listed in CURSES_LIB is NOT added to LIBS by default. You
# need to add CURSES_LIB to the appropriate xxx_LDADD line in your
# Makefile.am. For example:
#
# prog_LDADD = @CURSES_LIB@
#
# If CURSES_LIB is set on the configure command line (such as by running
# "./configure CURSES_LIB=-lmycurses"), then the only header searched for
# is <curses.h>. The user may use the CPPFLAGS precious variable to
# override the standard #include search path. If the user needs to
# specify an alternative path for a library (such as for a non-standard
# NcurseW), the user should use the LDFLAGS variable.
#
# The following shell variables may be defined by this macro:
#
# ax_cv_curses - set to "yes" if any Curses library found
# ax_cv_curses_enhanced - set to "yes" if Enhanced functions present
# ax_cv_curses_color - set to "yes" if color functions present
# ax_cv_curses_obsolete - set to "yes" if obsolete features present
#
# ax_cv_ncursesw - set to "yes" if NcursesW library found
# ax_cv_ncurses - set to "yes" if Ncurses library found
# ax_cv_plaincurses - set to "yes" if plain Curses library found
# ax_cv_curses_which - set to "ncursesw", "ncurses", "plaincurses" or "no"
#
# These variables can be used in your configure.ac to determine the level
# of support you need from the Curses library. For example, if you must
# have either Ncurses or NcursesW, you could include:
#
# AX_WITH_CURSES
# if test "x$ax_cv_ncursesw" != xyes && test "x$ax_cv_ncurses" != xyes; then
# AC_MSG_ERROR([requires either NcursesW or Ncurses library])
# fi
#
# If any Curses library will do (but one must be present and must support
# color), you could use:
#
# AX_WITH_CURSES
# if test "x$ax_cv_curses" != xyes || test "x$ax_cv_curses_color" != xyes; then
# AC_MSG_ERROR([requires an X/Open-compatible Curses library with color])
# fi
#
# Certain preprocessor symbols and shell variables defined by this macro
# can be used to determine various features of the Curses library. In
# particular, HAVE_CURSES and ax_cv_curses are defined if the Curses
# library found conforms to the traditional SysV and/or X/Open Base Curses
# definition. Any working Curses library conforms to this level.
#
# HAVE_CURSES_ENHANCED and ax_cv_curses_enhanced are defined if the
# library supports the X/Open Enhanced Curses definition. In particular,
# the wide-character types attr_t, cchar_t and wint_t, the functions
# wattr_set() and wget_wch() and the macros WA_NORMAL and _XOPEN_CURSES
# are checked. The Ncurses library does NOT conform to this definition,
# although NcursesW does.
#
# HAVE_CURSES_COLOR and ax_cv_curses_color are defined if the library
# supports color functions and macros such as COLOR_PAIR, A_COLOR,
# COLOR_WHITE, COLOR_RED and init_pair(). These are NOT part of the
# X/Open Base Curses definition, but are part of the Enhanced set of
# functions. The Ncurses library DOES support these functions, as does
# NcursesW.
#
# HAVE_CURSES_OBSOLETE and ax_cv_curses_obsolete are defined if the
# library supports certain features present in SysV and BSD Curses but not
# defined in the X/Open definition. In particular, the functions
# getattrs(), getcurx() and getmaxx() are checked.
#
# To use the HAVE_xxx_H preprocessor symbols, insert the following into
# your system.h (or equivalent) header file:
#
# #if defined HAVE_NCURSESW_CURSES_H
# # include <ncursesw/curses.h>
# #elif defined HAVE_NCURSESW_H
# # include <ncursesw.h>
# #elif defined HAVE_NCURSES_CURSES_H
# # include <ncurses/curses.h>
# #elif defined HAVE_NCURSES_H
# # include <ncurses.h>
# #elif defined HAVE_CURSES_H
# # include <curses.h>
# #else
# # error "SysV or X/Open-compatible Curses header file required"
# #endif
#
# For previous users of this macro: you should not need to change anything
# in your configure.ac or Makefile.am, as the previous (serial 10)
# semantics are still valid. However, you should update your system.h (or
# equivalent) header file to the fragment shown above. You are encouraged
# also to make use of the extended functionality provided by this version
# of AX_WITH_CURSES, as well as in the additional macros
# AX_WITH_CURSES_PANEL, AX_WITH_CURSES_MENU and AX_WITH_CURSES_FORM.
#
# LICENSE
#
# Copyright (c) 2009 Mark Pulford <mark@kyne.com.au>
# Copyright (c) 2009 Damian Pietras <daper@daper.net>
# Copyright (c) 2012 Reuben Thomas <rrt@sc3d.org>
# Copyright (c) 2011 John Zaitseff <J.Zaitseff@zap.org.au>
#
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation, either version 3 of the License, or (at your
# option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
# Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program. If not, see <http://www.gnu.org/licenses/>.
#
# As a special exception, the respective Autoconf Macro's copyright owner
# gives unlimited permission to copy, distribute and modify the configure
# scripts that are the output of Autoconf when processing the Macro. You
# need not follow the terms of the GNU General Public License when using
# or distributing such scripts, even though portions of the text of the
# Macro appear in them. The GNU General Public License (GPL) does govern
# all other use of the material that constitutes the Autoconf Macro.
#
# This special exception to the GPL applies to versions of the Autoconf
# Macro released by the Autoconf Archive. When you make and distribute a
# modified version of the Autoconf Macro, you may extend this special
# exception to the GPL to apply to your modified version as well.
#serial 15
AU_ALIAS([MP_WITH_CURSES], [AX_WITH_CURSES])
AC_DEFUN([AX_WITH_CURSES], [
AC_ARG_VAR([CURSES_LIB], [linker library for Curses, e.g. -lcurses])
AC_ARG_WITH([ncurses], [AS_HELP_STRING([--with-ncurses],
[force the use of Ncurses or NcursesW])],
[], [with_ncurses=check])
AC_ARG_WITH([ncursesw], [AS_HELP_STRING([--without-ncursesw],
[do not use NcursesW (wide character support)])],
[], [with_ncursesw=check])
ax_saved_LIBS=$LIBS
AS_IF([test "x$with_ncurses" = xyes || test "x$with_ncursesw" = xyes],
[ax_with_plaincurses=no], [ax_with_plaincurses=check])
ax_cv_curses_which=no
# Test for NcursesW
AS_IF([test "x$CURSES_LIB" = x && test "x$with_ncursesw" != xno], [
LIBS="$ax_saved_LIBS -lncursesw"
AC_CACHE_CHECK([for NcursesW wide-character library], [ax_cv_ncursesw], [
AC_LINK_IFELSE([AC_LANG_CALL([], [initscr])],
[ax_cv_ncursesw=yes], [ax_cv_ncursesw=no])
])
AS_IF([test "x$ax_cv_ncursesw" = xno && test "x$with_ncursesw" = xyes], [
AC_MSG_ERROR([--with-ncursesw specified but could not find NcursesW library])
])
AS_IF([test "x$ax_cv_ncursesw" = xyes], [
ax_cv_curses=yes
ax_cv_curses_which=ncursesw
CURSES_LIB="-lncursesw"
AC_DEFINE([HAVE_NCURSESW], [1], [Define to 1 if the NcursesW library is present])
AC_DEFINE([HAVE_CURSES], [1], [Define to 1 if a SysV or X/Open compatible Curses library is present])
AC_CACHE_CHECK([for working ncursesw/curses.h], [ax_cv_header_ncursesw_curses_h], [
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
@%:@define _XOPEN_SOURCE_EXTENDED 1
@%:@include <ncursesw/curses.h>
]], [[
chtype a = A_BOLD;
int b = KEY_LEFT;
chtype c = COLOR_PAIR(1) & A_COLOR;
attr_t d = WA_NORMAL;
cchar_t e;
wint_t f;
int g = getattrs(stdscr);
int h = getcurx(stdscr) + getmaxx(stdscr);
initscr();
init_pair(1, COLOR_WHITE, COLOR_RED);
wattr_set(stdscr, d, 0, NULL);
wget_wch(stdscr, &f);
]])],
[ax_cv_header_ncursesw_curses_h=yes],
[ax_cv_header_ncursesw_curses_h=no])
])
AS_IF([test "x$ax_cv_header_ncursesw_curses_h" = xyes], [
ax_cv_curses_enhanced=yes
ax_cv_curses_color=yes
ax_cv_curses_obsolete=yes
AC_DEFINE([HAVE_CURSES_ENHANCED], [1], [Define to 1 if library supports X/Open Enhanced functions])
AC_DEFINE([HAVE_CURSES_COLOR], [1], [Define to 1 if library supports color (enhanced functions)])
AC_DEFINE([HAVE_CURSES_OBSOLETE], [1], [Define to 1 if library supports certain obsolete features])
AC_DEFINE([HAVE_NCURSESW_CURSES_H], [1], [Define to 1 if <ncursesw/curses.h> is present])
])
AC_CACHE_CHECK([for working ncursesw.h], [ax_cv_header_ncursesw_h], [
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
@%:@define _XOPEN_SOURCE_EXTENDED 1
@%:@include <ncursesw.h>
]], [[
chtype a = A_BOLD;
int b = KEY_LEFT;
chtype c = COLOR_PAIR(1) & A_COLOR;
attr_t d = WA_NORMAL;
cchar_t e;
wint_t f;
int g = getattrs(stdscr);
int h = getcurx(stdscr) + getmaxx(stdscr);
initscr();
init_pair(1, COLOR_WHITE, COLOR_RED);
wattr_set(stdscr, d, 0, NULL);
wget_wch(stdscr, &f);
]])],
[ax_cv_header_ncursesw_h=yes],
[ax_cv_header_ncursesw_h=no])
])
AS_IF([test "x$ax_cv_header_ncursesw_h" = xyes], [
ax_cv_curses_enhanced=yes
ax_cv_curses_color=yes
ax_cv_curses_obsolete=yes
AC_DEFINE([HAVE_CURSES_ENHANCED], [1], [Define to 1 if library supports X/Open Enhanced functions])
AC_DEFINE([HAVE_CURSES_COLOR], [1], [Define to 1 if library supports color (enhanced functions)])
AC_DEFINE([HAVE_CURSES_OBSOLETE], [1], [Define to 1 if library supports certain obsolete features])
AC_DEFINE([HAVE_NCURSESW_H], [1], [Define to 1 if <ncursesw.h> is present])
])
AC_CACHE_CHECK([for working ncurses.h], [ax_cv_header_ncurses_h_with_ncursesw], [
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
@%:@define _XOPEN_SOURCE_EXTENDED 1
@%:@include <ncurses.h>
]], [[
chtype a = A_BOLD;
int b = KEY_LEFT;
chtype c = COLOR_PAIR(1) & A_COLOR;
attr_t d = WA_NORMAL;
cchar_t e;
wint_t f;
int g = getattrs(stdscr);
int h = getcurx(stdscr) + getmaxx(stdscr);
initscr();
init_pair(1, COLOR_WHITE, COLOR_RED);
wattr_set(stdscr, d, 0, NULL);
wget_wch(stdscr, &f);
]])],
[ax_cv_header_ncurses_h_with_ncursesw=yes],
[ax_cv_header_ncurses_h_with_ncursesw=no])
])
AS_IF([test "x$ax_cv_header_ncurses_h_with_ncursesw" = xyes], [
ax_cv_curses_enhanced=yes
ax_cv_curses_color=yes
ax_cv_curses_obsolete=yes
AC_DEFINE([HAVE_CURSES_ENHANCED], [1], [Define to 1 if library supports X/Open Enhanced functions])
AC_DEFINE([HAVE_CURSES_COLOR], [1], [Define to 1 if library supports color (enhanced functions)])
AC_DEFINE([HAVE_CURSES_OBSOLETE], [1], [Define to 1 if library supports certain obsolete features])
AC_DEFINE([HAVE_NCURSES_H], [1], [Define to 1 if <ncurses.h> is present])
])
AS_IF([test "x$ax_cv_header_ncursesw_curses_h" = xno && test "x$ax_cv_header_ncursesw_h" = xno && test "x$ax_cv_header_ncurses_h_with_ncursesw" = xno], [
AC_MSG_WARN([could not find a working ncursesw/curses.h, ncursesw.h or ncurses.h])
])
])
])
# Test for Ncurses
AS_IF([test "x$CURSES_LIB" = x && test "x$with_ncurses" != xno && test "x$ax_cv_curses_which" = xno], [
LIBS="$ax_saved_LIBS -lncurses"
AC_CACHE_CHECK([for Ncurses library], [ax_cv_ncurses], [
AC_LINK_IFELSE([AC_LANG_CALL([], [initscr])],
[ax_cv_ncurses=yes], [ax_cv_ncurses=no])
])
AS_IF([test "x$ax_cv_ncurses" = xno && test "x$with_ncurses" = xyes], [
AC_MSG_ERROR([--with-ncurses specified but could not find Ncurses library])
])
AS_IF([test "x$ax_cv_ncurses" = xyes], [
ax_cv_curses=yes
ax_cv_curses_which=ncurses
CURSES_LIB="-lncurses"
AC_DEFINE([HAVE_NCURSES], [1], [Define to 1 if the Ncurses library is present])
AC_DEFINE([HAVE_CURSES], [1], [Define to 1 if a SysV or X/Open compatible Curses library is present])
AC_CACHE_CHECK([for working ncurses/curses.h], [ax_cv_header_ncurses_curses_h], [
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
@%:@include <ncurses/curses.h>
]], [[
chtype a = A_BOLD;
int b = KEY_LEFT;
chtype c = COLOR_PAIR(1) & A_COLOR;
int g = getattrs(stdscr);
int h = getcurx(stdscr) + getmaxx(stdscr);
initscr();
init_pair(1, COLOR_WHITE, COLOR_RED);
]])],
[ax_cv_header_ncurses_curses_h=yes],
[ax_cv_header_ncurses_curses_h=no])
])
AS_IF([test "x$ax_cv_header_ncurses_curses_h" = xyes], [
ax_cv_curses_color=yes
ax_cv_curses_obsolete=yes
AC_DEFINE([HAVE_CURSES_COLOR], [1], [Define to 1 if library supports color (enhanced functions)])
AC_DEFINE([HAVE_CURSES_OBSOLETE], [1], [Define to 1 if library supports certain obsolete features])
AC_DEFINE([HAVE_NCURSES_CURSES_H], [1], [Define to 1 if <ncurses/curses.h> is present])
])
AC_CACHE_CHECK([for working ncurses.h], [ax_cv_header_ncurses_h], [
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
@%:@include <ncurses.h>
]], [[
chtype a = A_BOLD;
int b = KEY_LEFT;
chtype c = COLOR_PAIR(1) & A_COLOR;
int g = getattrs(stdscr);
int h = getcurx(stdscr) + getmaxx(stdscr);
initscr();
init_pair(1, COLOR_WHITE, COLOR_RED);
]])],
[ax_cv_header_ncurses_h=yes],
[ax_cv_header_ncurses_h=no])
])
AS_IF([test "x$ax_cv_header_ncurses_h" = xyes], [
ax_cv_curses_color=yes
ax_cv_curses_obsolete=yes
AC_DEFINE([HAVE_CURSES_COLOR], [1], [Define to 1 if library supports color (enhanced functions)])
AC_DEFINE([HAVE_CURSES_OBSOLETE], [1], [Define to 1 if library supports certain obsolete features])
AC_DEFINE([HAVE_NCURSES_H], [1], [Define to 1 if <ncurses.h> is present])
])
AS_IF([test "x$ax_cv_header_ncurses_curses_h" = xno && test "x$ax_cv_header_ncurses_h" = xno], [
AC_MSG_WARN([could not find a working ncurses/curses.h or ncurses.h])
])
])
])
# Test for plain Curses (or if CURSES_LIB was set by user)
AS_IF([test "x$with_plaincurses" != xno && test "x$ax_cv_curses_which" = xno], [
AS_IF([test "x$CURSES_LIB" != x], [
LIBS="$ax_saved_LIBS $CURSES_LIB"
], [
LIBS="$ax_saved_LIBS -lcurses"
])
AC_CACHE_CHECK([for Curses library], [ax_cv_plaincurses], [
AC_LINK_IFELSE([AC_LANG_CALL([], [initscr])],
[ax_cv_plaincurses=yes], [ax_cv_plaincurses=no])
])
AS_IF([test "x$ax_cv_plaincurses" = xyes], [
ax_cv_curses=yes
ax_cv_curses_which=plaincurses
AS_IF([test "x$CURSES_LIB" = x], [
CURSES_LIB="-lcurses"
])
AC_DEFINE([HAVE_CURSES], [1], [Define to 1 if a SysV or X/Open compatible Curses library is present])
# Check for base conformance (and header file)
AC_CACHE_CHECK([for working curses.h], [ax_cv_header_curses_h], [
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
@%:@include <curses.h>
]], [[
chtype a = A_BOLD;
int b = KEY_LEFT;
initscr();
]])],
[ax_cv_header_curses_h=yes],
[ax_cv_header_curses_h=no])
])
AS_IF([test "x$ax_cv_header_curses_h" = xyes], [
AC_DEFINE([HAVE_CURSES_H], [1], [Define to 1 if <curses.h> is present])
# Check for X/Open Enhanced conformance
AC_CACHE_CHECK([for X/Open Enhanced Curses conformance], [ax_cv_plaincurses_enhanced], [
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
@%:@define _XOPEN_SOURCE_EXTENDED 1
@%:@include <curses.h>
@%:@ifndef _XOPEN_CURSES
@%:@error "this Curses library is not enhanced"
"this Curses library is not enhanced"
@%:@endif
]], [[
chtype a = A_BOLD;
int b = KEY_LEFT;
chtype c = COLOR_PAIR(1) & A_COLOR;
attr_t d = WA_NORMAL;
cchar_t e;
wint_t f;
initscr();
init_pair(1, COLOR_WHITE, COLOR_RED);
wattr_set(stdscr, d, 0, NULL);
wget_wch(stdscr, &f);
]])],
[ax_cv_plaincurses_enhanced=yes],
[ax_cv_plaincurses_enhanced=no])
])
AS_IF([test "x$ax_cv_plaincurses_enhanced" = xyes], [
ax_cv_curses_enhanced=yes
ax_cv_curses_color=yes
AC_DEFINE([HAVE_CURSES_ENHANCED], [1], [Define to 1 if library supports X/Open Enhanced functions])
AC_DEFINE([HAVE_CURSES_COLOR], [1], [Define to 1 if library supports color (enhanced functions)])
])
# Check for color functions
AC_CACHE_CHECK([for Curses color functions], [ax_cv_plaincurses_color], [
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
@%:@define _XOPEN_SOURCE_EXTENDED 1
@%:@include <curses.h>
]], [[
chtype a = A_BOLD;
int b = KEY_LEFT;
chtype c = COLOR_PAIR(1) & A_COLOR;
initscr();
init_pair(1, COLOR_WHITE, COLOR_RED);
]])],
[ax_cv_plaincurses_color=yes],
[ax_cv_plaincurses_color=no])
])
AS_IF([test "x$ax_cv_plaincurses_color" = xyes], [
ax_cv_curses_color=yes
AC_DEFINE([HAVE_CURSES_COLOR], [1], [Define to 1 if library supports color (enhanced functions)])
])
# Check for obsolete functions
AC_CACHE_CHECK([for obsolete Curses functions], [ax_cv_plaincurses_obsolete], [
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
@%:@include <curses.h>
]], [[
chtype a = A_BOLD;
int b = KEY_LEFT;
int g = getattrs(stdscr);
int h = getcurx(stdscr) + getmaxx(stdscr);
initscr();
]])],
[ax_cv_plaincurses_obsolete=yes],
[ax_cv_plaincurses_obsolete=no])
])
AS_IF([test "x$ax_cv_plaincurses_obsolete" = xyes], [
ax_cv_curses_obsolete=yes
AC_DEFINE([HAVE_CURSES_OBSOLETE], [1], [Define to 1 if library supports certain obsolete features])
])
])
AS_IF([test "x$ax_cv_header_curses_h" = xno], [
AC_MSG_WARN([could not find a working curses.h])
])
])
])
AS_IF([test "x$ax_cv_curses" != xyes], [ax_cv_curses=no])
AS_IF([test "x$ax_cv_curses_enhanced" != xyes], [ax_cv_curses_enhanced=no])
AS_IF([test "x$ax_cv_curses_color" != xyes], [ax_cv_curses_color=no])
AS_IF([test "x$ax_cv_curses_obsolete" != xyes], [ax_cv_curses_obsolete=no])
LIBS=$ax_saved_LIBS
])dnl
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