example of using ant to drive a gcj build

Sun Nov 3 15:17:00 GMT 2002

Here's GCJ.xml, the build file used to build XWT on gcj-supported
targets (Win32, Linux, Solaris) demonstrating the use of gcjh, gcj,
g++, ld, and jikes in a coordinated build.
Note the use of both parallel and serial <apply/>'s -- something make
can't do. The dependency analysis here is very, very fine-grained --
none of jikes, gcjh, gcj, nor ld will ever be executed unless
absolutely necessary.
I've chosen ease of comprehension over compactness here; there's
nothing stoppping you from putting all the flags for each invocation
on a single line (like make). That would probably be a better idea
for a build as complex as libgcj's.
 - a
<!-- Copyright 2002 Adam Megacz, see the COPYING file for licensing [GPL] -->
<!--
 Subclasses of org.xwt.plat.GCJ should include a .xml file which
 sets the following properties, then invokes <ant antfile="src/org/xwt/plat/GCJ.xml"/>
 gcc-target - the gcc target name to use (for example, i686-pc-mingw32)
 linkflags - extra flags to pass to gcj during the link phase, if any
 binaryname - the name to give to the final binary
-->
<project name="GCJ" default="build">
 <target name="build">
 <echo message='extracting .class -> .h'/>
 <taskdef name='gcjh' classname='org.xwt.tasks.GCJHTask'>
 <classpath path='bin/'/> 
 </taskdef>
 <gcjh out='bin-${plat}' classpath='bin'/>
 <echo message='compiling .java -> .o'/>
 <apply failonerror='true' executable='${gcc-path}/bin/${gcc-target}gcj' dest='bin-${plat}'>
 <arg value='-fCLASSPATH=bin/'/>
 <arg value='-O9'/>
 <arg value='-g'/>
 <arg value='-c'/>
 <srcfile/>
 <arg value='-o'/>
 <targetfile/>
 <fileset dir='src/'>
 <include name='org/xwt/*.java'/>
 <include name='org/xwt/util/*.java'/>
 <include name='org/xwt/plat/GCJ.java'/>
 <include name='org/xwt/plat/${subplat}.java'/>
 <include name='org/bouncycastle/**/*.java'/>
 <include name='org/mozilla/**/*.java'/>
 <exclude name='org/xwt/Trap.java'/>
 </fileset>
 <mapper type='glob' from='*.java' to='*.o'/>
 </apply>
 <!-- we have to turn off optimization here due to a compiler bug -->
 <apply failonerror='true' executable='${gcc-path}/bin/${gcc-target}gcj' dest='bin-${plat}'>
 <arg value='-fCLASSPATH=bin/'/>
 <arg value='-O0'/>
 <arg value='-g'/>
 <arg value='-c'/>
 <srcfile/>
 <arg value='-o'/>
 <targetfile/>
 <fileset dir='src/'>
 <include name='org/xwt/Trap.java'/>
 </fileset>
 <mapper type='glob' from='*.java' to='*.o'/>
 </apply>
 <echo message='compiling .cc -> .o'/>
 <apply failonerror='true' executable='${gcc-path}/bin/${gcc-target}gcj' dest='bin-${plat}/'>
 <arg value='-g'/>
 <arg value='-Ibin-${plat}'/>
 <arg value='-c'/>
 <srcfile/>
 <arg value='-o'/>
 <targetfile/>
 <fileset dir='src/' includes='org/xwt/plat/${subplat}.cc'/>
 <mapper type='glob' from='*.cc' to='*-nat.o'/>
 </apply>
 
 <echo message='wrapping .xwar -> .o'/>
 <apply failonerror='true' executable='${gcc-path}/bin/${gcc-target}gcj' dest='bin-${plat}/'>
 <fileset dir='bin/' includes='**/*.xwar'/>
 <arg value='--resource'/>
 <arg value='org/xwt/builtin.xwar'/>
 <arg value='-c'/>
 <srcfile/>
 <arg value='-o'/>
 <targetfile/>
 <mapper type='glob' from='*.xwar' to='*.o'/>
 </apply>
 <echo message='linking .o -> ${binaryname}'/>
 <uptodate property="linked" targetfile="bin-${plat}/${binaryname}">
 <srcfiles dir="bin-${plat}/" includes="**/*.o" excludes='*.o'/>
 </uptodate>
 <antcall target="link"/>
 </target>
 <target name="link" unless="linked">
 <apply failonerror='true' executable='${gcc-path}/bin/${gcc-target}gcj' parallel='true'>
 <fileset dir='bin-${plat}/' includes='**/*.o' excludes='*.o'/>
 <arg value='-fCLASSPATH=${gcc-path}/share/libgcj.jar'/>
 <arg value='--main=org.xwt.Main'/>
 <arg line='-o bin-${plat}/${binaryname}'/>
 <srcfile/>
 <arg line='${linkflags}'/>
 </apply>
 </target>
</project>
-- 
"Through your rags I see your vanity" -- Socrates