Problem setting up makefile

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I am trying to setup multiple makefiles using common environment variables
that point to path information. I am calling nmake using recursion through
sub-projects. The problem is I cannot get nmake to maintain
variables across projects.
Simple example:
In makefile1:
ALL : ENV proj2

proj2:
nmake .\proj2\makefile
nmake .\proj3\makefile

ENV:
set AS=asm.exe

The result is project 2 builds ok using asm.exe but when it is done
AS is set to equal 'ml' and when I try to build project 3 it fails.
After struggling with this for a while I have decided to create a batch file
that sets up
the environment from the dos window.

My problem here is I need to set a 'base path' in the environment from the
batch file
ie set basepath=?
I do not know how to determine what the current path is from a batch file. I
do not see
an environment variable that points to the current path. I know I could
enter it from
the command line but I would like to avoid this if possible. Does anyone
know if there
is a way to determine the current path from a batch file?
I hope I am not confusing here.
thanks


.

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