%% <[EMAIL PROTECTED]> writes:
n> Can the variable be defined in rule ? Like this:
n> 1 target : $(OBJ_FILE)
n> 2 TMP_LIB := $(shell cat $(OBJ_FILES))
n> 3 $(LD) $(OPT_LD_STD) $(LDFLAGS) -o $@ $(TMP_LIB) $(EXTERNAL_LIBS)
$(SYSTEM_LIBS)
n> The OBJ_FILE is a text file with .o file list, and I want to translate
n> it to .o list used as the argument of link, so the variable TMP_LIB is
n> defined.
Why don't you just use:
target : $(OBJ_FILE)
$(LD) $(OPT_LD_STD) $(LDFLAGS) -o $@ `cat $(OBJ_FILES)`
$(EXTERNAL_LIBS) $(SYSTEM_LIBS)
?
n> But when do Make, syntax error found in line 3. So I doubt the
n> variable can not be defined within a fule.
You cannot, generally, define variables within rules, no. The entire
content of the line after the TAB character is variable-expanded, then
passed to the shell. So, these lines must be shell commands not make
commands.
If you have a sufficiently recent version of GNU make and are willing to
require that, you can use the $(eval ...) function inside a rule to
define a variable.
--
-------------------------------------------------------------------------------
Paul D. Smith <[EMAIL PROTECTED]> Find some GNU make tips at:
http://www.gnu.org http://make.paulandlesley.org
"Please remain calm...I may be mad, but I am a professional." --Mad Scientist
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