Q66644

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Q66644: NMAKE /N Doesn't Work Across Multiple Dependency Blocks

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Article: Q66644
Product(s): See article
Version(s): 1.11 1.12 | 1.11 1.12
Operating System(s): MS-DOS | OS/2
Keyword(s): ENDUSER | buglist1.11 buglist1.12 | mspl13_basic
Last Modified: 7-NOV-1990

Given the sample makefile below and the fact that mod2.c has been
changed, invoking NMAKE /N displays the following commands:

   cl /c -c mod2.c
   lib sub.lib -+ mod2.obj;

However, if NMAKE is run without the /N parameter, the following
commands will be executed:

   cl /c -c mod2.c
   lib sub.lib -+ mod2.obj;
   link boss.obj,,,sub.lib;

The /N switch is used to debug the logic of makefiles without actually
processing them. In this case, the commands that /N indicates will be
executed are not the same as those that actually are executed. This is
caused by the multiple dependencies for sub.lib. If the makefile is
changed to eliminate the multiple dependency blocks, the /N switch
will function correctly.

Microsoft has confirmed this to be a problem in NMAKE versions 1.11
and 1.12. We are researching this problem and will post new
information here as it becomes available.

Sample Code
-----------

CFLAGS=/c

.obj.exe:
        link $<,,,sub.lib;

all:boss.exe

boss.exe:boss.obj  sub.lib

boss.obj:

sub.lib:: mod1.obj
        lib $@ -+ mod1.obj;

sub.lib:: mod2.obj
        lib $@ -+ mod2.obj;

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