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Top Forums Shell Programming and Scripting Question in creating targets in makefile Post 302843986 by bakunin on Friday 16th of August 2013 03:49:29 AM
Old 08-16-2013
You need a generalized rule for how to get from a "source" file to an "object" file. If your source files carry the extension ".src" and your objects the extension ".obj" this would be:

Code:
.src.obj
               <actions here>

Now you only need a special variable which contains only the file name which triggered the rule to use in the action part - and fortunately there is such a thing: "$<". A possible rule would look like:

Code:
COMPILE=/path/to/compiler
FLAGS=-a -b -c
.src.obj
               $(COMPILE) $(FLAGS) $<

If the rule is triggered by the file "foo.src" the command executed would be:

Code:
/path/to/compiler -a -b -c foo.src

You might want to read the man page of the make-utility to learn more about the various special variables you can use. For instance, there is also a variable for the file name that will be the target of the rule: "$@".

C compilers per default write a file "a.out" instead of naming the object like the source file only with the extension replaced by ".obj". You would have to explicitly tell the compiler which name it should use for its output file with the "-o" option if you do not want this default behavior. This is what "$@" is for:

Code:
COMPILE=/path/to/compiler
FLAGS=-a -b -c
.src.obj
               $(COMPILE) $(FLAGS) $< -o $@

I am sure you will be able to adapt this to your needs with careful study of the man page.

I hope this helps.

bakunin
This User Gave Thanks to bakunin For This Post:
 

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NBP_NAME(3)						     Library Functions Manual						       NBP_NAME(3)

NAME
nbp_name - NBP name parsing SYNOPSIS
nbp_name( name, obj, type, zone ) char *name, **obj, **type, **zone; DESCRIPTION
nbp_name() parses user supplied names into their component object, type, and zone. obj, type, and zone should be passed by reference, and should point to the caller's default values. nbp_name() will change the pointers to the parsed-out values. name is of the form object:type@zone, where each of object, :type, and @zone replace obj, type, and zone, respectively. type must be proceeded by `:', and zone must be preceded by `@'. EXAMPLE
The argument of afpd(8)'s -n option is parsed with nbp_name(). The default value of obj is the first component of the machine's hostname (as returned by gethostbyname(3)). The default value of type is ``AFPServer'', and of zone is ``*'', the default zone. To cause afpd to register itself in some zone other than the default, one would invoke it as afpd -n @some-other-zone obj and type would retain their default values. BUGS
obj, type, and zone return pointers into static area which may be over-written on each call. netatalk 1.3 12 Jan 1994 NBP_NAME(3)
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