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<H1><A NAME="SECTION00050000000000000000">
4 The %.variables rule - dependencies</A>
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The rule for building these targets is in the <TT>rules.make</TT> file, 
it is the <TT>%.variables</TT> rule:
<PRE>
%.variables: %.tools %.subprojects
@ \
target=$(basename $(basename $*)); \
operation=$(subst .,,$(suffix $(basename $*))); \
type=$(subst -,_,$(subst .,,$(suffix $*))); \
echo Making $$operation for $$type $$target...; \
$(MAKE) -f $(MAKEFILE_NAME) --no-print-directory --no-keep-going \
  internal-$${type}-$$operation \
  INTERNAL_$${type}_NAME=$$target \
  TARGET=$$target \
  _SUBPROJECTS="$($(basename $(basename $*))_SUBPROJECTS)" \
  ...
</PRE>This rule matches all targets ending in <TT>.variables</TT>.  First of
all, the rule depends on the corresponding <TT>%.tools</TT> and
<TT>%.subprojects</TT> rules.  This is because before processing the
target itself, gnustep-make needs to process the related subprojects
and (only for frameworks) the framework tools.  We ignore this
complication of subprojects and framework tools for now; if you look
at the <TT>%.subprojects</TT> and <TT>%.tools</TT> rules you see
that they do nothing if you are not actually using subprojects or
framework tools in your makefile.

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2009-06-03
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