From:	dchrist_dnai_com AT my-deja DOT com
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: GNU Software for MS-Windows and MS-DOS
Date:	Fri, 17 Nov 2000 21:09:54 GMT
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comp.os.msdos.djgpp:

Thank you all for your replies.  :-)


>>    d. Will it allow long command lines?
>
> Yes.

I think the answer is:

1. "Yes" for DJGPP-compiled programs running in DJGPP Bash.
2. "No" for Windows console applications running in DJGPP Bash.
3. "No" for DJGPP applications running in a DOS box.

See the end of this posting for how I arrived at the above conclusions.

Unfortunately, the client needs #2.  :-(


>> Windows doesn't seem to be able to copy the CD (chokes on filenames
>> that differ only by case)
>
> ???? What file names are those, and how did you try to copy the CD
> contents?  Also, what error messages, exactly, did you see?

Trying "xcopy" in a DOS box:

    D:\>xcopy *.* c:\fsf\cd1\. /e /f
    ...
    D:\gnu\gcc-2721\_GDBINIT -> c:\fsf\cd1\gnu\gcc-2721\_GDBINIT
    D:\gnu\gcc-2721\_GDBINIT.000 -> c:\fsf\cd1\gnu\gcc-2721\_GDBINIT.000
    Overwrite c:\fsf\cd1\gnu\gcc-2721\_gdbinit (Yes/No/All)?

Trying Windows Explorer (create directory c:\fsf\cd1, highlight and copy
contents of CD root, paste into C:\fsf\cd1):

    Copying...
    corefile.c
    From 'ppc' to 'ppc'

    Error Copying File
    Cannot copy corefile:  The file exists.


David Christensen
dchrist AT dnai DOT com






To test command line length issues, I wrote the following program:

    C:\DChristensen\code\bc5>type args.c
    #include "stdio.h"
    #include "string.h"
    int main(int argc, char* argv[])
    {
            int i, l, sum = 0;
            printf("argc = %d\n", argc);
            for (i = 0; i < argc; i++) {
                    l = strlen(argv[i]);
                    printf("argv[%d] = \"%s\" (length=%d)\n",
                        i, argv[i], l);
                    sum += l;
            }
            printf("total length args 1 through %d = %d\n", argc, sum);
            return 0;
    }

Then compiled it in a DOS box using Borland C++ 5.01 (edited to 72
columns):

    C:\DChristensen\code\bc5>bcc args.c
    Borland C++ 5.0 Copyright (c) 1987, 1996 Borland International
    args.c:
    Turbo Link  Version 7.1.32.2. Copyright (c) 1987, 1996 Borland Inter
    national

Then ran "args.exe" from a DOS box (edited to 72 columns):

    C:\DChristensen\code\bc5>args 1234567890 1234567890 1234567890 12345
    67890 1234567890 1234567890 1234567890 1234567890 1234567890 1234567
    890 1234567890 1
    argc = 13
    argv[0] = "C:\DCHRIS~1\CODE\BC5\ARGS.EXE" (length=29)
    argv[1] = "1234567890" (length=10)
    argv[2] = "1234567890" (length=10)
    argv[3] = "1234567890" (length=10)
    argv[4] = "1234567890" (length=10)
    argv[5] = "1234567890" (length=10)
    argv[6] = "1234567890" (length=10)
    argv[7] = "1234567890" (length=10)
    argv[8] = "1234567890" (length=10)
    argv[9] = "1234567890" (length=10)
    argv[10] = "1234567890" (length=10)
    argv[11] = "1234567890" (length=10)
    argv[12] = "1" (length=1)
    total arg lengths = 140

Then ran "args.exe" from a Bash box:

    <0 1234567890 1234567890 1234567890 1234567890 1234567890 1234567890
    argc = 13
    argv[0] = "C:\DCHRIS~1\CODE\BC5\ARGS.EXE" (length=29)
    argv[1] = "1234567890" (length=10)
    argv[2] = "1234567890" (length=10)
    argv[3] = "1234567890" (length=10)
    argv[4] = "1234567890" (length=10)
    argv[5] = "1234567890" (length=10)
    argv[6] = "1234567890" (length=10)
    argv[7] = "1234567890" (length=10)
    argv[8] = "1234567890" (length=10)
    argv[9] = "1234567890" (length=10)
    argv[10] = "1234567890" (length=10)
    argv[11] = "1234567890" (length=10)
    argv[12] = "1234" (length=4)
    total arg lengths = 143

Then compiled it using DJGPP:

    ~/code/bc5$ gcc args.c

Then ran "a.out" from a Bash box:

    <4567890 1234567890 1234567890 1234567890 1234567890
    argc = 13
    argv[0] = "c:/DChristensen/code/bc5/a.out" (length=30)
    argv[1] = "1234567890" (length=10)
    argv[2] = "1234567890" (length=10)
    argv[3] = "1234567890" (length=10)
    argv[4] = "1234567890" (length=10)
    argv[5] = "1234567890" (length=10)
    argv[6] = "1234567890" (length=10)
    argv[7] = "1234567890" (length=10)
    argv[8] = "1234567890" (length=10)
    argv[9] = "1234567890" (length=10)
    argv[10] = "1234567890" (length=10)
    argv[11] = "1234567890" (length=10)
    argv[12] = "1234567890" (length=10)
    total length args 1 through 13 = 150

Then ran "a.exe" from a DOS box:

    C:\DChristensen\code\bc5>a.exe 1234567890 1234567890 1234567890 1234
    567890 1234567890 1234567890 1234567890 1234567890 1234567890 123456
    7890 1234567890
    argc = 12
    argv[0] = "c:/dchris~1/code/bc5/a.exe" (length=26)
    argv[1] = "1234567890" (length=10)
    argv[2] = "1234567890" (length=10)
    argv[3] = "1234567890" (length=10)
    argv[4] = "1234567890" (length=10)
    argv[5] = "1234567890" (length=10)
    argv[6] = "1234567890" (length=10)
    argv[7] = "1234567890" (length=10)
    argv[8] = "1234567890" (length=10)
    argv[9] = "1234567890" (length=10)
    argv[10] = "1234567890" (length=10)
    argv[11] = "1234567890" (length=10)
    total length args 1 through 12 = 136


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