Subj : Re: Makefile question relating to conditional
To   : comp.programming
From : Willem
Date : Sat Sep 24 2005 10:37 am

hzmonte@hotmail.com wrote:
) I inherit a Makefile that has the following rule:
)
) target:       main.c
)         if ( `uname` == "SunOS" ) $(CC) $(CFLAGS) $(LDFLAGS_SOL)
) main.c $(DEBUGOBJ) -o main
)         if ( `uname` == "Linux" ) $(CC) $(CFLAGS) $(LDFLAGS_LINUX)
) main.c $(DEBUGOBJ) -o main
)
) It is to be run by GNU gmake, and it does seem to run okay.

Plain vanilla make will run it fine as well.

) But I am not able to see anywhere in the GNU Make manual that says
) gmake supports an if conditional with the above syntax.  It supports
) ifeq, ifneq, etc, but not if(...==...).  Is this an undocumented
) feature of gmake?

'if' is not part of gmake.  It is part of sh.  gmake (or make) just runs
the whole line as a command.  Try typing the following on your commandline:

  if ( `uname` == "Linux" ) echo Linux

  if ( `uname` == "SunOS" ) echo SunOS

) And I am not able to find in the manual what 'xxx' and "xxx" means.

Thats not 'xxx', that is `xxx`.  There's a difference.
Read the manual for sh to see what the reverse quotes mean.


SaSW, Willem
-- 
Disclaimer: I am in no way responsible for any of the statements
            made in the above text. For all I know I might be
            drugged or something..
            No I'm not paranoid. You all think I'm paranoid, don't you !
#EOT

.