output of a command

[Martin Knappe]

Hi
Im really stuck here, hope someone can help me:

Suppose I want to write a makefile with target "all"
the command sequence for building "all" is as follows:

-first, file "foo1.asm" should be compiled to "foo1.bin"
-then, file foo2.asm should be compiled to foo2.bin: in the sourcefile 
"foo2.asm", the environment variable FOO is referenced, and must contain 
the size of "foo1.bin" IN BYTES..i have tried for 2 days now and i cant 
get it working :-( how can i set this environment variable for the 
second compilation?
-after that, the file "binarydisk.bin" shall be built by placing the 
content of "foo1.bin" at the start of it, and then placing "foo2.bin" in 
"binarydisk.bin":

-at sector X / Y, if X % sextorsize = 0
-at sector X / Y + 1, if X % sectorsize <> 0

...where X is the size of foo1.bin in bytes and Y is the sectorsize in bytes

please help

thanks

martin