dependency file for non-existent files

Massimiliano Cialdi

Expert 1995 points

I use arm compiler 5.1.5 to compile for Cortex M4.

I have a source file like this:

#include "version.h"

const char __ver__[] = VERSION;

version.h is created by makefile:

version.h: makefile
	echo "#define VERSION \"$(VERSION)\"" > $@

and the rule to creade obj from c should generate a dependency file:

%.obj: %.c
	$(CC) $(CFLAGS) --preproc_with_compile --preproc_dependency=$(@:.obj=.d) --output_file=$@ $<

the dependency file is generated, but does not contain the dipendence from version.h:

version_str.obj: version_str.c

How can I generate the dependency file containing version.h?

I attach a sample project (the makefile contains reference to installation dirs in my system)

best regards

Max

sample.tar.gz

over 11 years ago

0 George Mock over 11 years ago

TI__Guru**** 253170 points

I'm pretty sure the solution you seek lies in the makefile, and not with the compiler. I think I have seen this done before, but I don't recall any details. This article appears to be what you need: http://make.mad-scientist.net/papers/advanced-auto-dependency-generation

Hope this helps ...

-George

0 Massimiliano Cialdi over 11 years ago in reply to George Mock

Expert 1995 points

with gcc I can use -MG parameter:

gcc -I. -MM -MG -o version_str.d version_str.c

and the output is:

version_str.o: version_str.c version.h

in this case version.h is included as dependency.

there is an equivalent parameter for ti arm compiler?

best regards

max

0 George Mock over 11 years ago in reply to Massimiliano Cialdi

TI__Guru**** 253170 points

mastupristi said:
there is an equivalent parameter for ti arm compiler?

No. The option --preproc_dependency does some of the things you get with -MM -MG, but not all of them. For instance, all the header files referenced must exist, while -MG tells gcc to ignore missing header files.

Thanks and regards,

-George

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dependency file for non-existent files