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From: chen@digital.sps.mot.com (Jinfu Chen)
Newsgroups: comp.sys.apollo
Subject: Re: Problems with Fortran-Compiler
Message-ID: <4ff9d7df.3593b@digital.sps.mot.com>
Date: 23 Feb 91 01:00:31 GMT
References: <250@mailgzrz.tu-berlin.de>
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Organization: Motorola, LICD, SPS, Mesa, AZ
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In article <250@mailgzrz.tu-berlin.de> jaenicke@w414zrz.zrz.tu-berlin.de (Lutz Jaenicke) writes:
>We are doing FEM-calculations which require the use of large
>arrays. The arrays are of static size and declared in the
>program header. The compiler is running well and .o-Files of 
>normal size are generated. When the program is linked, it seems 
>that all the arrays are allocated, filled with nothing 
>and then are written into the executable file, so that a large 
>amount of diskspace is wasted. Under SR10.2p the executables 
>where of normal size (which means some 100k), now they take MEGABYTES.  

I noticed similar situation with cc6.7. It turns out when a large size of
static variable is declared (large array), the executable is filled. Then I
found out a compiler switch -compress in /com/cc (-W0,-compress in /bin/cc)
which works quite well.

Checking over ftn.hlp and man f77 I couldn't find similar switch. Maybe
someone knows FORTRAN could help?

-- 
Jinfu Chen                  (602)898-5338 
Motorola, Inc.  SPS  Mesa, AZ
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