Hi All,
I have created a common makefile that compiles both pc and c files.
i have created the dependency between the files as
.pc.o:
I will be deleting the .c files created from the .pc files, once the object file is created. ( better storage maintenance)
so when i have a rule like
foo: foo.o
for building foo.o the precedence always goes for .c.o, i mean the make file checks for foo.c first and builds it.
What i want is to change the precedence to .pc, i.e
when i build foo, the precedence should first go to
how can i achieve that?
It means dependency that .c files are created from .pc files.
So it's bellow description you should write.
---------------
Regards.
hey thank you.. but i dont what that as i wud be removing the generated c files for better space maintenance.
so that option wont suit me.. so is it possible to make the target condition
.o to check .pc first and then .c??
I think it's better that you write your task in Makefile.
RM=rm -f
PC2C_FILE=`find -name '*.pc' -exec echo {} \; | sed -e 's/.pc$$/.c/' `
.SUFFIXES:
.SUFFIXES: .c .o .obj .pc
all: test.exe
test.exe: test.o test2.o test3.o
echo $^ > $@
.c.o:
echo $^ > $@
.pc.c:
echo $^ > $@
clean:
$(RM) test.exe *.o
make better_storage_maintenance
better_storage_maintenance:
$(RM) $(PC2C_FILE)
ls result:
4 Makefile
0 test.pc
0 test2.c
0 test3.pc
case 1: Compile
echo test.pc > test.c
echo test.c > test.o
echo test2.c > test2.o
echo test3.pc > test3.c
echo test3.c > test3.o
echo test.o test2.o test3.o > test.exe
rm test3.c test.c
(red letter is automaticaly added. So do nothing.)
The version of make program I use:
GNU Make 3.80
Copyright (C) 2002 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
case 2: Better storage maintenance
rm -f `find -name '*.pc' -exec echo {} \; | sed -e 's/.pc$/.c/' `
case 3: Cleaning
rm -f test.exe *.o
make better_storage_maintenance
case 4: look up .c file from .pc file
echo test.pc > test.c
(You need to execute "make better_storage_maintenance" at later)
era
August 17, 2008, 7:33am
5
For GNU make you can also simply mark .c files as .PRECIOUS: so they won't be removed automatically.
I don't know details.
But, do .PRECIOUS option only keep .c file except for temp file ?
My result is it that I really execute it. (And I'm surprized!)
I am not sure that reason why it works.
era
August 17, 2008, 8:24am
7
I'm not sure I understand the question. .PRECIOUS marks a file as one which Make should not remove even if it was created as a temporary step and not as an end goal.
I think one reason.
If compiler failed on creating .o file from .c file, I must modifiy .pc file.
After a while. I create .c file from .pc file again.
Therefore it's wrong that .c file exists at the time when Error raised.
Hey, era . As you say, I write ".PRECIOUS: %.c" in Makefile.
Regards.