Blame NOTES.DJGPP

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 INSTALLATION ON THE DOS PLATFORM WITH DJGPP
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 OpenSSL has been ported to DJGPP, a Unix look-alike 32-bit run-time
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 environment for 16-bit DOS, but only with long filename support.
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 If you wish to compile on native DOS with 8+3 filenames, you will
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 have to tweak the installation yourself, including renaming files
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 with illegal or duplicate names.
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 You should have a full DJGPP environment installed, including the
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 latest versions of DJGPP, GCC, BINUTILS, BASH, etc. This package
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 requires that PERL and the PERL module Text::Template also be
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 installed (see NOTES.PERL).
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 All of these can be obtained from the usual DJGPP mirror sites or
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 directly at "http://www.delorie.com/pub/djgpp". For help on which
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 files to download, see the DJGPP "ZIP PICKER" page at
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 "http://www.delorie.com/djgpp/zip-picker.html". You also need to have
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 the WATT-32 networking package installed before you try to compile
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 OpenSSL. This can be obtained from "http://www.watt-32.net/".
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 The Makefile assumes that the WATT-32 code is in the directory
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 specified by the environment variable WATT_ROOT. If you have watt-32
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 in directory "watt32" under your main DJGPP directory, specify
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 WATT_ROOT="/dev/env/DJDIR/watt32".
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 To compile OpenSSL, start your BASH shell, then configure for DJGPP by
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 running "./Configure" with appropriate arguments:
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	./Configure no-threads --prefix=/dev/env/DJDIR DJGPP
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 And finally fire up "make". You may run out of DPMI selectors when
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 running in a DOS box under Windows. If so, just close the BASH
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 shell, go back to Windows, and restart BASH. Then run "make" again.
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 RUN-TIME CAVEAT LECTOR
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 --------------
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 Quoting FAQ:
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  "Cryptographic software needs a source of unpredictable data to work
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   correctly.  Many open source operating systems provide a "randomness
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   device" (/dev/urandom or /dev/random) that serves this purpose."
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 As of version 0.9.7f DJGPP port checks upon /dev/urandom$ for a 3rd
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 party "randomness" DOS driver. One such driver, NOISE.SYS, can be
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 obtained from "http://www.rahul.net/dkaufman/index.html".