RE: auto dependency checking/creation for GNU make?

[Miller, Bryan]

A caveat - when I first write this email I was not able to reach
www.paulandlesley.org/gmake/.  I now am reading Paul's treatise on auto
dependency generation.  I am still interested in any advice/recommendations
anyone wishes to make.

Cheers,
Bryan

> -----Original Message-----
> From: Miller, Bryan [mailto:address@hidden
> Sent: Friday, March 01, 2002 2:04 PM
> To: 'address@hidden'
> Subject: auto dependency checking/creation for GNU make?
> 
> 
> Hello all,
> 
> I have a client that, despite my strong advice to the 
> contrary, wants a make
> system that will simply build every file in the source tree 
> (in this case
> inside ClearCase).  Instead of maintaining a list of 
> dependencies in the
> makefile they simply want to add a set of files to the source 
> tree and be
> able to type "make all".
> 
> Has anyone out there done anything like this natively in make 
> without having
> to run a bunch of foreach iterations?  Their expectations are 
> that every .c
> or .s file will yield a .o file and all the .o files will be used to
> generate one large .a file.
> 
> I created one makefile that used $(wildcard) constructs to 
> generate a list
> of dependencies but it is a real hack and at times causes 
> buffer overflows
> since the list is so long:
> 
> find_c_files = $(wildcard $(dir)/*.c)
> find_s_files = $(wildcard $(dir)/*.s)
> 
> # Find all the *.c and *.s files in the base directories.
> c_files = $(foreach dir, $(dirs), $(find_c_files))
> s_files = $(foreach dir, $(dirs), $(find_s_files))
> 
> # Take list of *.c & *.s files and make list of *.o files.
> c_objects = $(patsubst %.c,%.o, $(c_files))
> s_objects = $(patsubst %.s,%.o, $(s_files))
> 
> Thanks much in advance,
> Bryan
> --
> Bryan Miller
> Sr. Staff Software Engineer
> Rational Software Corporation
> 
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