%% "Henry LeRoy Miller, Jr." <[EMAIL PROTECTED]> writes:
hlm> I am unable to get the feature 'target-specific variables' to work.
hlm> It appears that make attempts to interpret the assignment as a
hlm> dependency (pre-requisite).
hlm> I found the bit about escaping the equal sign in the NEWS document
hlm> for 3.77 changes - it ought to be mentioned in the texinfo docs (or
hlm> at least referenced from the section dealing with target-specific
hlm> variables).
You only escape the equals sign if you _DON'T_ want to use
target-specific variables. That is, if you had a dependency that
contained an = as part of the filename, you must escape it so make
doesn't think it's a target-specific variable.
Make looks at the first prerequisites to see if they look like a
variable assignment, and if they do it treats the line as a
target-specific variable assignment rather than a rule definition.
hlm> test2 : pkgDir\=$(bDir)
hlm> @echo 'Here on elsewhere at $(pkgDir)'
This isn't a target-specific variable definition at all, because you've
escaped the = sign, so make treats it as a normal rule definition.
hlm> #test3 : pkgDir=$(cDir)
hlm> # @echo 'Here on elsewhere at $(pkgDir)'
hlm> test4 : test1 empty pkgDir\=$(cDir)
hlm> @echo 'Here on elsewhere at $(pkgDir)'
This is incorrect.
You cannot "mix and match" target-specific variable definitions with
normal rule definitions. You cannot put a target-specific variable in
with a list of normal prerequisites, and you cannot put one in a rule
definition with a script attached.
Target-specific variable definitions are completely separate entities
from rules; they have a similar syntax, but are treated differently.
Write these as:
test3: pkgDir=$(cDir)
test3:
@echo 'Here on elsewhere at $(pkgDir)'
test4 : pkgDir = $(cDir)
test4 : test1 empty
@echo 'Here on elsewhere at $(pkgDir)'
and it will work.
--
-------------------------------------------------------------------------------
Paul D. Smith <[EMAIL PROTECTED]> Find some GNU make tips at:
http://www.gnu.org http://www.ultranet.com/~pauld/gmake/
"Please remain calm...I may be mad, but I am a professional." --Mad Scientist
