RE: Iterating through multi-line variable

[Hambridge, Philip J (ODP)]

I think this does the trick...

# Define a var containing one space character.
SPACE :=
SPACE +=

# Define a substitute for space.
SPACESUB := __SPACE__

# Define a var containing one new-line character (there are two blank
lines in this).
define NEWLINE


endef

# The multi-line var under test.
define FOO
foo abc
bar xyz
quux
endef


# Replace each space in FOO with a substitute, then replace each
new-line with a space so
# make sees each line as a word. The foreach function will then loop
through all words
# and it's just necessary to undo the space substitution in the body of
the loop - in this
# cas just a call to the info function.
$(foreach line,$(subst $(NEWLINE),$(SPACE),$(subst
$(SPACE),$(SPACESUB),$(FOO))),\
  $(info line: '$(subst $(SPACESUB),$(SPACE),$(line))')\
)


Regards,

Philip.


-----Original Message-----
From: J.T. Conklin [mailto:address@hidden 
Sent: 28 June 2010 23:49
To: address@hidden
Subject: Iterating through multi-line variable

Suppose you have a multi-line variable where each line may have spaces.

    define FOO
    foo abc
    bar xyz
    quux
    endef

Is there a way to iterate through the variable line-by-line instead of
word-by-word (as with $(foreach ...)) ?

    --jtc

-- 
J.T. Conklin