Sophie: sdcc-3.0.0-0.fc14 x86

sdcc-3.0.0-0.fc14.x86_64.rpm

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<H2><A NAME="SECTION00348000000000000000"></A><A NAME="567"></A>
<BR>
2.4.8 VPATH feature
</H2>

<P>
SDCC supports the VPATH feature provided by configure and make. It
allows to separate the source and build trees. Here's an example:

<P>
<TT>cd ~&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;#
cd $HOME</TT>

<P>
<TT>tar -xjf sdcc-src-yyyymmdd-rrrr.tar.bz2&nbsp;# extract source
to directory sdcc</TT>

<P>
<TT>mkdir sdcc.build&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;#
put output in sdcc.build</TT>

<P>
<TT>cd sdcc.build</TT>

<P>
<TT>../sdcc/configure&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;#
configure is doing all the magic!</TT>

<P>
<TT>make</TT>

<P>
That's it! <B>configure</B> will create the directory
tree will all the necessary Makefiles in ~/sdcc.build.
It automagically computes the variables srcdir, top_srcdir and top_buildir
for each directory. After running <B>make</B> the generated files
will be in ~/sdcc.build, while the source files stay
in ~/sdcc.
<BR>
This is not only usefull for building different binaries, e.g.
when cross compiling. It also gives you a much better overview in
the source tree when all the generated files are not scattered between
the source files. And the best thing is: if you want to change a file
you can leave the original file untouched in the source directory.
Simply copy it to the build directory, edit it, enter `make clean',
`rm Makefile.dep' and `make'. <B>make</B> will do the rest for you!

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2011-03-20
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