Paul Smith 11095a90f1 Make second expansion optional (partial implementation). ... I decided this feature was too impacting to make the permanent default behavior. This set of changes makes the default behavior of make the old behavior (no second expansion). If you want second expansion, you must define the .SECONDEXPANSION: special target before the first target that needs it. This set of changes ONLY fixes explicit and static pattern rules to work like this. Implicit rules still have second expansion enabled all the time: I'll work on that next. Note that there is still a backward-incompatibility: now to get the old SysV behavior using $$@ etc. in the prerequisites list you need to set .SECONDEXPANSION: as well.		2005-10-24 13:01:39 +00:00
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comments
conditionals
default_names
double_colon
echoing
errors
escape
export
include
mult_rules
mult_targets
order_only	Make second expansion optional (partial implementation).	2005-10-24 13:01:39 +00:00
override
parallelism
patspecific_vars
patternrules
quoting
recursion
reinvoke
se_explicit	Make second expansion optional (partial implementation).	2005-10-24 13:01:39 +00:00
se_implicit
se_statpat	Make second expansion optional (partial implementation).	2005-10-24 13:01:39 +00:00
statipattrules	Make second expansion optional (partial implementation).	2005-10-24 13:01:39 +00:00
targetvars
varnesting
vpath
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vpathgpath
vpathplus