URL:
<http://savannah.gnu.org/bugs/?19298>
Summary: simplify automatic generation of prerequisites
example
Project: make
Submitted by: None
Submitted on: Sunday 03/11/2007 at 17:38 UTC
Severity: 3 - Normal
Item Group: Documentation
Status: None
Privacy: Public
Assigned to: None
Open/Closed: Open
Discussion Lock: Any
Component Version: 3.81
Operating System: Any
Fixed Release: None
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Details:
in section 4.14 Generating Prerequisites Automatically
the example is quite complex using sed to add the *.d files as target. there
are easier ways to do that.
using an extra echo
%.d : %.c
@echo -n $@" " > $@
$(CC) $(CFLAGS) -MM $< >> $@
using gcc options -MT and -MF
%.d : %.c
$(CC) $(CFLAGS) -MM -MT $@ -MT $(basename $@).o -MF $@ $<
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