Re: I am getting a strange error when compiling abcpar.f in gfortran

On 11/18/2024 5:50 AM, R Daneel Olivaw wrote:

Lynn McGuire wrote:

On 11/12/2024 4:01 PM, baf wrote:

On 11/12/2024 12:43 PM, Lynn McGuire wrote:

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If all of your general purpose subroutines and functions are in modules, you don't need interfaces for them (one of the advantages of modules).

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I have 6,000 subroutines in 5,000 files.  All I did was put interfaces for about 2,600 of the subroutines into a single module.
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Lynn
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A better alternative would be to put the subroutines in the module and USE the module. Then you don't need the interfaces (the compiler gets all of the interface information "automagically").

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850,000 lines of code in a single file ?  That would be a mess.
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Lynn
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I wasn't suggesting a single module. Partition the subprograms into meaningful subgroups. Also, as was indicated, you can use submodules to avoid cascading compilation issues with a large number of modules.

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My father and two other engineer profs started developing the software back in 1968 on a Univac 1108.  It had 32K words of data space and 32K words of code space.  To build large software, we had to manually partition the software ourselves so that it would fit into those 32K words of code space.  It was a major pain when somebody would update a subroutine and mess up the partition map.
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When I personally started working on the software in 1975, it was one of my jobs to update the huge partition map on the wall outside my bosses office.  I used the big computer sheets and taped them together, about a hundred or so of the sheets.
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Never again.
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Lynn
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 Were you using @FOR (Fielddata) or @FTN (Ascii)?
Things became much simpler when multiple Ibanks and addresses over 0200 000 became possible (for @ftn, @for was abandoned at some point).  I think @ftn also permitted multiple Dbanks but I never used that, the code generated was - by necessity - horrific.

It has been 49 years ago, I do not remember.  Too many computers, too many languages.  I have written software in around dozen languages and a dozen platforms now.  Fortran, IBM 370 Assembly, Basic, Pascal, C, HTML, Perl, C++, Smalltalk, bsh, Visual Basic, etc.
We gave up on the Univac 1108 in 1981 ??? and the CDC 7600 in 1982.  I started working at another company in 1982 when I finished my degree in Mechanical Engineering at TAMU.  I went back to the engineering software company in 1989.
Lynn