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Make utility - some Qs togurus..

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Operating Systems Solaris Make utility - some Qs togurus..
# 1  
Old 01-30-2007
Make utility - some Qs togurus..
(Sorry for previous not on enlish! I did not realized it is english forum. )
I am looking for help with Make utility. I could not get help from the 'man' pages.
1. About Macro (as a variable): It is clear about defining any macro in beginning or in command line, but isn't it no way to redefine a macro during a processing?
I would need to setup some indicator variable in a dependency section and make some action in futher processing depend on its value.
Example:
IND1=0
SECT_0: DEP_1
<command>; \
<command>; \
if [ IND1 -eq 1 ]; then <command>; fi

DEP_1:
<command>; \
IND1=1
It comes out that the re-definition IND1 is not heppening. Maybe I should do it differently?

Another related problem that it seems there is no way to change an environment variable from any section. Seems that any section is processed in separate subshell?! Is it true?

So, is there any way to have a some kind of 'variable' in makefile, not just a 'constant' as it looks like with macro?

2. Initialization section: I know, it is .INIT: ..., but how to exit makefile if it would be nessesary or prevent to execute all available section if makefile is ran with no specific section name?
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LEARN ABOUT FREEBSD

nice

NICE(1) 						    BSD General Commands Manual 						   NICE(1)

NAME

     nice -- execute a utility at an altered scheduling priority

SYNOPSIS

     nice [-n increment] utility [argument ...]

DESCRIPTION

     The nice utility runs utility at an altered scheduling priority, by incrementing its ``nice'' value by the specified increment, or a default
     value of 10.  The lower the nice value of a process, the higher its scheduling priority.

     The superuser may specify a negative increment in order to run a utility with a higher scheduling priority.

     Some shells may provide a builtin nice command which is similar or identical to this utility.  Consult the builtin(1) manual page.

ENVIRONMENT

     The PATH environment variable is used to locate the requested utility if the name contains no '/' characters.

EXIT STATUS

     If utility is invoked, the exit status of nice is the exit status of utility.

     An exit status of 126 indicates utility was found, but could not be executed.  An exit status of 127 indicates utility could not be found.

EXAMPLES

     Execute utility 'date' at priority 5 assuming the priority of the shell is 0:

	   nice -n 5 date

     Execute utility 'date' at priority -19 assuming the priority of the shell is 0 and you are the super-user:

	   nice -n 16 nice -n -35 date

COMPATIBILITY

     The traditional -increment option has been deprecated but is still supported.

SEE ALSO

     builtin(1), csh(1), idprio(1), rtprio(1), getpriority(2), setpriority(2), renice(8)

STANDARDS

     The nice utility conforms to IEEE Std 1003.1-2001 (``POSIX.1'').

HISTORY

     A nice utility appeared in Version 4 AT&T UNIX.

BSD
								 February 24, 2011							       BSD