Linux include file suckage

[Tom Christiansen <tchrist@chthon.perl.com>]

Has anyone else tried to figure out what kind of rigamarole is
needed for getting "require 'fcntl.ph'" working in Linux?  It's
something of a nightmare due to the <EXPLETIVE DELETED> way they've
got their include files "arranged" (a term best used guardedly).

First, the INSTALL file says

    cd /usr/include && h2ph *.h sys/*.h

Because they've screwed up their <sys> directory, you can't do that.
It's not at all enough.  You have to do


    cd /usr/include
    h2ph `find . -name *.h -print`

And even that's not enough, at all.  Because the "linux" and "asm"
directories are symblimked, so you have to use

    cd /usr/include
    h2ph `find . -follow -name *.h -print`

This still gives you this:

    % perl -e 'require "sys/fcntl.ph"'
    Can't locate stddef.ph in @INC (did you run h2ph?) (@INC contains: /opt/perl/lib/5.00563/i686-linux /opt/perl/lib/5.00563 /opt/perl/lib/site_perl/5.00563/i686-linux /opt/perl/lib/site_perl .) at /opt/perl/lib/site_perl/5.00563/i686-linux/bits/types.ph line 7.
    Compilation failed in require at /opt/perl/lib/site_perl/5.00563/i686-linux/sys/types.ph line 6.
    Compilation failed in require at /opt/perl/lib/site_perl/5.00563/i686-linux/bits/fcntl.ph line 6.
    Compilation failed in require at /opt/perl/lib/site_perl/5.00563/i686-linux/fcntl.ph line 6.
    Compilation failed in require at /opt/perl/lib/site_perl/5.00563/i686-linux/sys/fcntl.ph line 3.
    Compilation failed in require at -e line 1.

Why?  I don't rightly know.  It has something to do with their nutty gcc 
include bits.

    % echo "#include <stddef.h>" > /tmp/foo.h
    % ( strace cpp /tmp/foo.h > /dev/null ) | & grep '^open.* = [0-9]'
    open("/etc/ld.so.cache", O_RDONLY)      = 3
    open("/lib/libc.so.6", O_RDONLY)        = 3
    open("/tmp/foo.h", O_RDONLY)            = 3
    open("/usr/lib/gcc-lib/i386-redhat-linux/egcs-2.91.66/include/stddef.h", O_RDONLY) = 4

I find that I have to do this to make it all work:

    % perl -I /opt/perl/lib/site_perl/5.00563/i686-linux/linux -e 'require "sys/fcntl.ph"'

I'd like that to be in the default library path, so I don't have to 
type all that ick.

But there's still some sys/types.h problem:

    % perl -I /opt/perl/lib/site_perl/5.00563/i686-linux/linux -e 'require "sys/types.ph"'
    Prototype mismatch: sub main::__NFDBITS vs () at (eval 58) line 1.
    Prototype mismatch: sub main::__FD_SETSIZE vs () at (eval 59) line 1.

--tom

PS: I can't wait for next release, at which point I'll get to
    reinstall absolutely everything, include millions of libraries,
    since they'll need to look for things in
	/opt/perl/lib/site_perl/5.00564 
    instead of
	/opt/perl/lib/site_perl/5.00563
    Upgrades: just say no, and plan a few days for them when they do
    happen.

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"Matthias Urlichs" <smurf@noris.net>
Andy Dougherty <doughera@lafayette.edu>
JVromans@squirrel.nl (Johan Vromans)

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