Could someone please help me clarify the usage of the uptodate task in
ANT (v1.4.1) ?
I have the following files:
./build.xml
./Lexer.g
./gensrc/Lexer.java
./gensrc/LexerTokenTypes.java
./gensrc/LexerTokenTypes.txt
The 'gensrc' directory is peer to both the Lexer.g file and my
build.xml file. The files inside gensrc are generated by a tool that
processes the Lexer.g file (antlr.Tool if it matters). I want
regenerate the files withing the gensrc directory ONLY if Lexer.g is
NEWER. It seemed that the uptodate task would work for this purpose.
Here is my task. I think I only need to check the Lexer.g file against
the Lexer.java file to make things simpler.
<target name="isUpToDate">
<uptodate property="buildLexer"
targetfile="gensrc/Lexer.java">
<srcfiles dir="." includesfile="Lexer.g"/>
</uptodate>
</target>
However, this ALWAYS sets buildLexer to true. My understanding is that
the targetFile is the file that gets generated through some action on
the srcfiles. I then tried:
<uptodate property="buildLexer">
<srcfiles dir="." includesfile="Lexer.g"/>
<mapper from="Lexer.g" to="gensrc/Lexer.java" type="glob"/>
</uptodate>
Same result, buildLexer is ALWAYS set to true. What am I missing,
besides a bit more hair? I tried switching the srcfile and targetfile
thinking I had them backwards and still it gets set to true.
Thanks much,
Jeff
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