Summary: Using $(eval) to get information at the time a target is invoked, but
instead information gotten is when "make" is invoked.
Problem occurs for make3.81 and make 3.82 on Windows XP
However if makefile is modified to look for information in a
subfolder then correct results are obtained.
Equivalent makefile in Linux for 3.81 works correctly also
Folder contents:
D:\testEval>dir
Volume in drive D is Data
Volume Serial Number is 6AEC-315C
Directory of D:\testEval
01/07/2011 08:12 PM <DIR> .
01/07/2011 08:12 PM <DIR> ..
01/05/2011 11:31 AM 0 Hello.c
01/07/2011 08:06 PM 321 makefile
01/05/2011 11:31 AM 0 world.c
3 File(s) 321 bytes
2 Dir(s) 8,175,538,176 bytes free
D:\testEval>
Makefile contents:
SRC_DIR = ./
PROG_NAME = test
define PROGRAM_template
$(1)_SRC_DIR = $$(SRC_DIR)
$(1)_SRC_FILES = $$(wildcard $$($(1)_SRC_DIR)*.c)
endef
$(eval $(call PROGRAM_template,$(PROG_NAME)))
clean:
del hello.c
all:
rem $(test_SRC_DIR)
rem $(test_SRC_FILES)
rem $(wildcard $(test_SRC_DIR)*.c)
Invocation
make clean all
Results:
D:\testEval>make clean all
del hello.c
rem ./
rem ./Hello.c ./world.c
rem ./Hello.c ./world.c
Expected Results:
del hello.c
rem ./
rem ./world.c
rem ./world.c
A makefile (makefile_sav) looking for files under a subfolder <test> works:
(<test> contains hello.c and world.c files)
SRC_DIR = ./
PROG_NAME = test
define PROGRAM_template
$(1)_SRC_DIR = $$(join $$(SRC_DIR),$(1)/)
$(1)_SRC_FILES = $$(wildcard $$($(1)_SRC_DIR)*.c)
endef
$(eval $(call PROGRAM_template,$(PROG_NAME)))
clean:
del test\hello.c
all:
rem $(test_SRC_DIR)
rem $(test_SRC_FILES)
rem $(wildcard $(test_SRC_DIR)*.c)
The output from this is:
G:\testEval>make -f makefile_sav clean all
del test\hello.c
rem ./test/
rem ./test/world.c
rem ./test/world.c
and it is correct.
I'll be glad to send everything (just a few files) in a zip file. Please
advise.
Thanks,
SC Hsu
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