Gmake problem when including sub makefiles

[Martin Gaarde Lund]

Im working on a makefile which includes submakefiles which defines various targets and variables. This affects my target definitions in a unfortunate way.

I have summarized my problem in the following example makefile:

ERRORFILE = $(PROJECT).err

PROJECT = project

test.o:
    armcc test.c -o test.o --errors $(ERRORFILE)

PROJECT = project1

test1.o:
    armcc test1.c -o test1.o --errors $(ERRORFILE)
    
clean:
    rm *.o


From this example I would have expected make to assemble the following target commands:
armcc test.c -o test.o --errors project.err
armcc test1.c -o test1.o --errors project1.err

But what i get is:
armcc test.c -o test.o --errors project1.err
armcc test1.c -o test1.o --errors project1.err

As it appears the same ERRORFILE applies to both commands.. I realize that this is an effect of how make reads through the makefile in different stages.

Is it possible to make a construction which works as I intended it to?

Please note that I can not depend on the target rule for defining my error output.

Any input will be appreciated, thanks.

/Martin


P.S. Im using GNU Make 3.81 built for i686-pc-mingw32