Fixes an incompatibility with Libtool 2+.

Rebased on FreeSOLID-2.1.2.

Originally retrieved from Fedora (see:
https://src.fedoraproject.org/rpms/FreeSOLID/raw/rawhide/f/FreeSOLID-2.1.1-configure.patch).

Upstream-status: https://sourceforge.net/p/freesolid/patches/10/

--- FreeSOLID-2.1.1/configure.in.orig	2012-05-24 20:58:30.000000000 +0200
+++ FreeSOLID-2.1.1/configure.in	2012-05-24 21:08:00.932445488 +0200
@@ -1,8 +1,11 @@
 dnl Process this file with autoconf to produce a configure script.
-AC_INIT(sample/sample.cpp)
+AC_INIT
 AC_CONFIG_MACRO_DIR([m4])
+AC_CONFIG_SRCDIR([sample/sample.cpp])
 
-AC_CANONICAL_SYSTEM
+AC_CONFIG_MACRO_DIR([m4])
+
+AC_CANONICAL_TARGET
 PACKAGE=FreeSOLID
 VERSION=2.1.1
 FREESOLID_CURRENT=2
@@ -15,15 +18,14 @@
 
 AM_INIT_AUTOMAKE($PACKAGE, $VERSION)
 
-AM_CONFIG_HEADER(include/config.h)
+AC_CONFIG_HEADERS([include/config.h])
 
 dnl Checks for programs.
-AC_LIBTOOL_WIN32_DLL
 AC_PROG_CXX
 AC_PROG_CC
 AC_PROG_CPP
 AC_PROG_INSTALL
-AC_PROG_LIBTOOL
+LT_INIT([win32-dll])
 
 CPPFLAGS="$CPPFLAGS -I../include -I./include -I. -I../libbroad -I../libmoto"
 AC_SUBST(CPPFLAGS)
@@ -52,11 +54,6 @@
 AC_CHECK_FUNCS(sqrt)
 AC_CHECK_FUNCS(fabs)
 
-AC_OUTPUT([ doc/Makefile 
-            sample/Makefile 
-            Makefile 
-            libbroad/Makefile 
-            libmoto/Makefile 
-            libsolid/Makefile 
-            freesolid-config
-            FreeSOLID.pc])
+AC_CONFIG_FILES([doc/Makefile sample/Makefile Makefile libbroad/Makefile libmoto/Makefile libsolid/Makefile freesolid-config])
+AC_CONFIG_FILES([FreeSOLID.pc])
+AC_OUTPUT
be1e8966abc45e4782df83447510a90b4'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=0a5b060be1e8966abc45e4782df83447510a90b4'>root</a>/<a href='/guix/log/etc?id=0a5b060be1e8966abc45e4782df83447510a90b4'>etc</a>/<a href='/guix/log/etc/init.d?id=0a5b060be1e8966abc45e4782df83447510a90b4'>init.d</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/etc/init.d?id=0a5b060be1e8966abc45e4782df83447510a90b4&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2024-06-26 22:59:55 +0200'>2024-06-26</span></td><td><a href='/guix/commit/etc/init.d?id=d11b96eb5493231a5a35045505ff8ae8aa746b8e'>etc: Add explicit ‘--substitute-urls’ in guix-daemon service files.</a><span class='msg-avail'>...<span class='msg-tooltip'>Having substitute URLs explicitly listed in the service startup file
makes it clearer what should be modified to permanently change the list
of substitute URLs.

* config-daemon.ac: Rename ‘guix_substitute_urls’ to
‘GUIX_SUBSTITUTE_URLS’ and substitute it.
* nix/local.mk (etc/guix-%.service, etc/init.d/guix-daemon)
(etc/guix-%.conf): Substitute it.
* etc/guix-daemon.conf.in, etc/guix-daemon.service.in,
etc/init.d/guix-daemon.in: Add an explicit ‘--substitute-urls’ option.

Change-Id: Ie491b7fab5c42e54dca582801c03805a85de2bf9
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-07-07 23:54:20 -0400'>2021-07-07</span></td><td><a href='/guix/commit/etc/init.d?id=4cbe0127a668cbcc64087c5d311308b59d39b104'>guix-install.sh: Prompt for configuring substitutes discovery.</a><span class='msg-avail'>...<span class='msg-tooltip'>Also ensure prompt_yes_no always print the message with a trailing space,
which is more pleasing to the eye.

* etc/guix-daemon.conf.in &lt;--discover=no&gt;: New guix-daemon option.
* etc/guix-daemon.service.in: Likewise.
* etc/init.d/guix-daemon.in: Likewise.
* etc/openrc/guix-daemon.in: Likewise.
* etc/guix-install.sh (configure_substitute_discovery): New procedure.
(sys_enable_guix_daemon): Ask the user whether automatic substitute discovery
should be enabled.  Set the '--discover' argument accordingly.
(prompt_yes_no): Add a trailing space to the message.
(sys_authorize_build_farms): Remove trailing space from the message argument.
* NEWS (Distribution): Add news.
</span></span></td><td>Maxim Cournoyer</td></tr>