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<HTML><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><!-- Created on September, 12  2004 by texi2html 1.64 --><!-- Written by: Lionel Cons <Lionel.Cons@cern.ch> (original author)            Karl Berry  <karl@freefriends.org>            Olaf Bachmann <obachman@mathematik.uni-kl.de>            and many others.Maintained by: Olaf Bachmann <obachman@mathematik.uni-kl.de>Send bugs and suggestions to <texi2html@mathematik.uni-kl.de> --><HEAD><TITLE>Autoconf, Automake, and Libtool: A Makefile.am for DLLs</TITLE><META NAME="description" CONTENT="Autoconf, Automake, and Libtool: A Makefile.am for DLLs"><META NAME="keywords" CONTENT="Autoconf, Automake, and Libtool: A Makefile.am for DLLs"><META NAME="resource-type" CONTENT="document"><META NAME="distribution" CONTENT="global"><META NAME="Generator" CONTENT="texi2html 1.64"><script language="Javascript"><!--    // Check the browser version.    function checkVersion() {      if (navigator.appVersion.charAt(0)>=3) return true;      if (navigator.appVersion.charAt(0)>=4) return true; 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<TR VALIGN="TOP" ALIGN="LEFT"><TD VALIGN="MIDDLE" ALIGN="LEFT"><A HREF="autobook_254.html#SEC254" onMouseover="img_act('back')" onMouseout="img_inact('back')"><IMG SRC="back.png" BORDER="0" ALT="FastBack: A configure.in for DLLs" ALIGN="MIDDLE" NAME="back"></A></TD></TR><TR VALIGN="TOP" ALIGN="LEFT"><TD VALIGN="MIDDLE" ALIGN="LEFT"><A HREF="autobook_251.html#SEC251" onMouseover="img_act('up')" onMouseout="img_inact('up')"><IMG SRC="up.png" BORDER="0" ALT="Up: DLLs with Libtool" ALIGN="MIDDLE" NAME="up"></A></TD></TR><TR VALIGN="TOP" ALIGN="LEFT"><TD VALIGN="MIDDLE" ALIGN="LEFT"><A HREF="autobook_257.html#SEC257" onMouseover="img_act('forward')" onMouseout="img_inact('forward')"><IMG SRC="forward.png" BORDER="0" ALT="FastForward: Package Installation" ALIGN="MIDDLE" NAME="forward"></A></TD></TR><TR VALIGN="TOP" ALIGN="LEFT"><TD VALIGN="MIDDLE" ALIGN="LEFT"><A HREF="autobook.html#SEC_Top" onMouseover="img_act('home')" onMouseout="img_inact('home')"><IMG SRC="home.png" BORDER="0" ALT="Top: Autoconf, Automake, and Libtool" ALIGN="MIDDLE" NAME="home"></A></TD></TR><TR VALIGN="TOP" ALIGN="LEFT"><TD VALIGN="MIDDLE" ALIGN="LEFT"><A HREF="autobook_toc.html#SEC_Contents" onMouseover="img_act('toc')" onMouseout="img_inact('toc')"><IMG SRC="toc.png" BORDER="0" ALT="Contents: Table of Contents" ALIGN="MIDDLE" NAME="toc"></A></TD></TR><TR VALIGN="TOP" ALIGN="LEFT"><TD VALIGN="MIDDLE" ALIGN="LEFT"><A HREF="autobook_285.html#SEC285" onMouseover="img_act('index')" onMouseout="img_inact('index')"><IMG SRC="index.png" BORDER="0" ALT="Index: Index" ALIGN="MIDDLE" NAME="index"></A></TD></TR><TR VALIGN="TOP" ALIGN="LEFT"><TD VALIGN="MIDDLE" ALIGN="LEFT"><A HREF="autobook_abt.html#SEC_About" onMouseover="img_act('help')" onMouseout="img_inact('help')"><IMG SRC="help.png" BORDER="0" ALT="About: About this document" ALIGN="MIDDLE" NAME="help"></A></TD></TR></TABLE></TD><TD ALIGN="LEFT"><H3> 25.4.2 A Makefile.am for DLLs </H3><!--docid::SEC253::--><P>First of all we will <EM>autoconfiscate</EM><A NAME="DOCF66" HREF="autobook_fot.html#FOOT66">(66)</A> the source files above with a minimal setup:</P><P><TT>`Makefile.am'</TT> is used to generate the <TT>`Makefile.in'</TT> templatefor the <TT>`configure'</TT> script:<TABLE width=100%><tr><td>&nbsp;</td><td class=example bgcolor=#6688aa><br><pre>## Process this file with automake to produce Makefile.in.lib_LTLIBRARIES		= libhello.lalibhello_la_SOURCES     = hello.clibhello_la_LDFLAGS     = -no-undefined -version-info 0:0:0include_HEADERS         = hello.hbin_PROGRAMS            = hellohello_SOURCES           = main.chello_LDADD             = libhello.la</pre></td></tr></table></P><P>The new feature introduced in this file is the use of the<SAMP>`-no-undefined'</SAMP> flag in the <CODE>libhello_la_LDFLAGS</CODE> value.This flag is required for Windows DLL builds.  It asserts to the linkerthat there are no undefined symbols in the <TT>`libhello.la'</TT> target,which is one of the requirements for building a DLL outlinedearlier.  See section <A HREF="autobook_88.html#SEC88">11.2.1 Creating Libtool Libraries with Automake</A>.</P><P>For an explanation of the contents of the rest of this <TT>`Makefile.am'</TT>,See section <A HREF="autobook_35.html#SEC35">Introducing GNU automake</A>.</P><P><A NAME="A configure.in for DLLs"></A></TR></TABLE><BR>  <FONT SIZE="-1">This document was generatedby <I>Gary V. Vaughan</I> on <I>September, 12  2004</I>using <A HREF="http://www.mathematik.uni-kl.de/~obachman/Texi2html"><I>texi2html</I></A></BODY></HTML>

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