URL:
<http://savannah.gnu.org/bugs/?35062>
Summary: Add lazy evaluation of prerequisites
Project: make
Submitted by: lmielick
Submitted on: Wed 14 Dec 2011 01:16:59 AM GMT
Severity: 3 - Normal
Item Group: Enhancement
Status: None
Privacy: Public
Assigned to: None
Open/Closed: Open
Discussion Lock: Any
Component Version: None
Operating System: Any
Fixed Release: None
Triage Status: None
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Details:
The idea is not to evaluate prerequisites of target not being make goals. Such
approach would improve non-recursive make performance by skipping unnecessary
wildcard/shell calls for targets not being build.
E.g. the following Makefile would output only:
A prerequisites evaluated
all: a
a: $(info A prerequisites evaluated)
b: $(info B prerequisites evaluated)
.PHONY: a b all
This could be handled in a way similar to .SECONDEXPANSION not to cause
compatibility issues in cases where prerequisites expansions causes side
effects. However greater care may be needed to support eval.
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