mk/libusual6.html

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<body class="article">
<div id="header">
<h1>Use installed libusual with autoconf and antimake.</h1>
</div>
<div id="content">
<div id="preamble">
<div class="sectionbody">
<div class="paragraph"><p>Install libusual and link against it.</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_build_libusual">Build libusual</h2>
<div class="sectionbody">
<div class="listingblock">
<div class="content">
<pre><tt>$ git clone git://github.com/libusual/libusual.git libusual
Cloning into 'libusual'...
done.
$ cd libusual
$ ./autogen.sh
[...]
$ ./configure --disable-shared --prefix=`pwd`/../inst
[...]
$ make
[...]
$ make install
[...]
$ cd ..</tt></pre>
</div></div>
</div>
</div>
<div class="sect1">
<h2 id="_build_our_own_code">Build our own code</h2>
<div class="sectionbody">
<div class="paragraph"><p>Now we prepare our own code.</p></div>
<div class="paragraph"><p>First, this is the source file:</p></div>
<div class="listingblock">
<div class="title">File: prog.c</div>
<div class="content"><!-- Generator: GNU source-highlight 3.1.5
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><span style="font-weight: bold"><span style="color: #000080">#include</span></span> <span style="color: #FF0000">&lt;stdio.h&gt;</span>
<span style="font-weight: bold"><span style="color: #000080">#include</span></span> <span style="color: #FF0000">&lt;string.h&gt;</span>
<span style="font-weight: bold"><span style="color: #000080">#include</span></span> <span style="color: #FF0000">&lt;usual/hashing/crc32.h&gt;</span>

<span style="color: #009900">int</span> <span style="font-weight: bold"><span style="color: #000000">main</span></span><span style="color: #990000">(</span><span style="color: #009900">void</span><span style="color: #990000">)</span>
<span style="color: #FF0000">{</span>
        <span style="font-weight: bold"><span style="color: #0000FF">const</span></span> <span style="color: #009900">char</span> <span style="color: #990000">*</span>data <span style="color: #990000">=</span> <span style="color: #FF0000">"CECSFXX"</span><span style="color: #990000">;</span>
        <span style="color: #008080">uint32_t</span> crc<span style="color: #990000">;</span>

        crc <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">calc_crc32</span></span><span style="color: #990000">(</span>data<span style="color: #990000">,</span> <span style="font-weight: bold"><span style="color: #000000">strlen</span></span><span style="color: #990000">(</span>data<span style="color: #990000">),</span> <span style="color: #993399">0</span><span style="color: #990000">);</span>
        <span style="font-weight: bold"><span style="color: #000000">printf</span></span><span style="color: #990000">(</span><span style="color: #FF0000">"crc: %08x</span><span style="color: #CC33CC">\n</span><span style="color: #FF0000">"</span><span style="color: #990000">,</span> crc<span style="color: #990000">);</span>
        <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> <span style="color: #993399">0</span><span style="color: #990000">;</span>
<span style="color: #FF0000">}</span></tt></pre></div></div>
<div class="paragraph"><p>Autoconf setup</p></div>
<div class="listingblock">
<div class="title">File: autogen.sh</div>
<div class="content"><!-- Generator: GNU source-highlight 3.1.5
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><span style="font-style: italic"><span style="color: #9A1900"># use prepared autgen logic</span></span>
<span style="color: #990000">../..</span>/std-autogen<span style="color: #990000">.</span>sh <span style="color: #990000">../../..</span>

<span style="font-style: italic"><span style="color: #9A1900"># fetch Antimake template from libusual</span></span>
cp <span style="color: #990000">../..</span>/antimake<span style="color: #990000">.</span>mk antimake<span style="color: #990000">.</span>mk<span style="color: #990000">.</span><span style="font-weight: bold"><span style="color: #0000FF">in</span></span></tt></pre></div></div>
<div class="listingblock">
<div class="title">File: extra.mk.in</div>
<div class="content">
<pre><tt>USUAL_ANTIMAKE = @USUAL_ANTIMAKE@
USUAL_CFLAGS = @USUAL_CFLAGS@
USUAL_LIBS = @USUAL_LIBS@</tt></pre>
</div></div>
<div class="listingblock">
<div class="title">File: configure.ac</div>
<div class="content"><!-- Generator: GNU source-highlight 3.1.5
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt>AC_INIT([achello], [0.1], [https://libusual.github.com])
AC_CONFIG_HEADER([config.h])
AC_CONFIG_SRCDIR([prog.c])
AC_PREREQ([2.59])

AC_USUAL_INIT
AC_USUAL_PROGRAM_CHECK

PKG_CHECK_MODULES(USUAL, libusual)
_PKG_CONFIG([USUAL_ANTIMAKE], [variable=antimake], [libusual])
AC_SUBST([USUAL_ANTIMAKE])

AC_OUTPUT([antimake.mk extra.mk])</tt></pre></div></div>
<div class="paragraph"><p>Here is the source that needs to be linked with libusual:</p></div>
<div class="listingblock">
<div class="title">File: prog.c</div>
<div class="content"><!-- Generator: GNU source-highlight 3.1.5
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><span style="font-weight: bold"><span style="color: #000080">#include</span></span> <span style="color: #FF0000">&lt;usual/hashing/crc32.h&gt;</span>
<span style="font-weight: bold"><span style="color: #000080">#include</span></span> <span style="color: #FF0000">&lt;stdio.h&gt;</span>
<span style="font-weight: bold"><span style="color: #000080">#include</span></span> <span style="color: #FF0000">&lt;string.h&gt;</span>

<span style="color: #009900">int</span> <span style="font-weight: bold"><span style="color: #000000">main</span></span><span style="color: #990000">(</span><span style="color: #009900">void</span><span style="color: #990000">)</span>
<span style="color: #FF0000">{</span>
        <span style="font-weight: bold"><span style="color: #0000FF">const</span></span> <span style="color: #009900">char</span> <span style="color: #990000">*</span>data <span style="color: #990000">=</span> <span style="color: #FF0000">"CECSFXX"</span><span style="color: #990000">;</span>
        <span style="color: #008080">uint32_t</span> crc<span style="color: #990000">;</span>

        crc <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">calc_crc32</span></span><span style="color: #990000">(</span>data<span style="color: #990000">,</span> <span style="font-weight: bold"><span style="color: #000000">strlen</span></span><span style="color: #990000">(</span>data<span style="color: #990000">),</span> <span style="color: #993399">0</span><span style="color: #990000">);</span>
        <span style="font-weight: bold"><span style="color: #000000">printf</span></span><span style="color: #990000">(</span><span style="color: #FF0000">"crc: %08x</span><span style="color: #CC33CC">\n</span><span style="color: #FF0000">"</span><span style="color: #990000">,</span> crc<span style="color: #990000">);</span>
        <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> <span style="color: #993399">0</span><span style="color: #990000">;</span>
<span style="color: #FF0000">}</span></tt></pre></div></div>
<div class="paragraph"><p>Antimake based Makefile</p></div>
<div class="listingblock">
<div class="title">File: Makefile</div>
<div class="content"><!-- Generator: GNU source-highlight 3.1.5
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><span style="font-style: italic"><span style="color: #9A1900"># the automake-style build description for 'prog'</span></span>
<span style="color: #009900">noinst_PROGRAMS =</span> prog
<span style="color: #009900">prog_SOURCES =</span> prog.c
<span style="color: #009900">prog_CPPFLAGS =</span> <span style="color: #009900">$(USUAL_CFLAGS)</span>
<span style="color: #009900">prog_LDADD =</span> <span style="color: #009900">$(USUAL_LIBS)</span>

<span style="font-style: italic"><span style="color: #9A1900"># clean configured files</span></span>
<span style="color: #009900">DISTCLEANFILES =</span> config.status config.log extra.mk antimake.mk config.h

<span style="font-style: italic"><span style="color: #9A1900"># clean generated files</span></span>
<span style="color: #009900">MAINTAINERCLEANFILES =</span> configure config.guess config.sub install-sh <span style="color: #990000">\</span>
                antimake.mk.in extra.mk.in config.h.in
<span style="color: #009900">EXTRA_DIST =</span> Makefile <span style="color: #009900">$(MAINTAINERCLEANFILES)</span>

<span style="font-style: italic"><span style="color: #9A1900"># launch Antimake</span></span>
include extra.mk
include antimake.mk</tt></pre></div></div>
<div class="paragraph"><p>Build the project</p></div>
<div class="listingblock">
<div class="content">
<pre><tt>$ sh ./autogen.sh
$ PKG_CONFIG_PATH=`pwd`/inst/lib/pkgconfig ./configure
[...]
$ make
     CC       prog.c
     CCLD     prog
$ ls
Makefile        config.guess  config.status  extra.mk     libusual
antimake.mk     config.h      config.sub     extra.mk.in  prog
antimake.mk.in  config.h.in   configure      inst         prog.c
autogen.sh      config.log    configure.ac   install-sh
$ ./prog
crc: 12345678
$ make am-show-distfiles
Makefile
antimake.mk.in
config.guess
config.h.in
config.sub
configure
extra.mk.in
install-sh
prog.c
$ make maintainer-clean
     CLEAN    prog
     MAINTAINERCLEAN maintainer-clean
$ ls
Makefile  autogen.sh  configure.ac  inst  libusual  prog.c</tt></pre>
</div></div>
<div class="paragraph"><p>Done!</p></div>
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