Older versions of the XL C/C++ Evaluation for AIX 5.3 Post: 303030356

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Operating Systems AIX Older versions of the XL C/C++ Evaluation for AIX 5.3 Post 303030356 by bakunin on Friday 8th of February 2019 10:07:21 AM

02-08-2019

Registered User

Quote:

Originally Posted by eh2scqw

I have already tried the GCC version from Michael Perzls page to compile a software that is not avaiable as a RPM (Hercules Mainframe Emulator). Even newer GCC version have the same problem with inline assembler code like this:

Code:

1:  lwarx   25,0,31 
    cmpw    0,25,30 
    bne 2f 
    stwcx.  0,0,31 
    bne-    1b 
    sync 
 2:

I remember, that XL C/C++ did not have this problem.
I also had to change a lot of other code to get a (almost) usable running version of Hercules.

I am well aware that GCC has its shortcomings with AIX. i suggested Michael Perzls (and Michael Felts) page because i know for a fact both of them use XlC (not GCC) for compilation. It might have been that Michael Perzl had already compiled (and packaged) the software you were looking for so you could have tried it even if you don't have a XlC yourself.

In general i would not use any software compiled with GCC under AIX for any productive system (and probably not even test systems). The code quality - as you said already, especially when it comes to inline assembler - is terrible.

Another problem is that memory management in AIX is unlike any other OS i know and some programs which behave well under Linux may become memory sinks in AIX when compiled with GCC for a reason i do not claim to understand fully. But then i am so far removed from software development nowadays that this may be understandable. The days when i developed software instead of systems administration are 25 years past.

I hope this helps.

bakunin

bakunin

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LEARN ABOUT REDHAT

perldgux

PERLDGUX(1)						 Perl Programmers Reference Guide					       PERLDGUX(1)

NAME

       perldgux - Perl under DG/UX.

SYNOPSIS

       One can read this document in the following formats:

	       man perldgux
	       view perl perldgux
	       explorer perldgux.html
	       info perldgux

       to list some (not all may be available simultaneously), or it may be read as is: as README.dgux.

DESCRIPTION

       Perl 5.7/8.x for DG/UX ix86 R4.20MU0x

BUILDING PERL ON DG
/UX
       Non-threaded Perl on DG/UX

       Just run ./Configure script from the top directory.  Then give "make" to compile.

       Threaded Perl on DG/UX

       If you are using as compiler GCC-2.95.x rev(DG/UX) an easy solution for configuring perl in your DG/UX machine is to run the command:

       ./Configure -Dusethreads -Duseithreads -Dusedevel -des

       This will automatically accept all the defaults and in particular /usr/local/ as installation directory.  Note that GCC-2.95.x rev(DG/UX)
       knows the switch -pthread which allows it to link correctly DG/UX's -lthread library.

       If you want to change the installation directory or have a standard DG/UX with C compiler GCC-2.7.2.x then you have no choice than to do an
       interactive build by issuing the command:

       ./Configure -Dusethreads -Duseithreads

       In particular with GCC-2.7.2.x accept all the defaults and *watch* out for the message:

	   Any additional ld flags (NOT including libraries)? [ -pthread]

       Instead of -pthread put here -lthread. CGCC-2.7.2.x that comes with the DG/UX OS does NOT know the -pthread switch. So your build will fail
       if you choose the defaults.  After configuration is done correctly give "make" to compile.

       Testing Perl on DG/UX

       Issuing a "make test" will run all the tests.  If the test lib/ftmp-security gives you as a result something like

	   lib/ftmp-security....File::Temp::_gettemp:
	   Parent directory (/tmp/) is not safe (sticky bit not set
	   when world writable?) at lib/ftmp-security.t line 100

       don't panic and just set the sticky bit in your /tmp directory by doing the following as root:

       cd / chmod +t /tmp (=set the sticky bit to /tmp).

       Then rerun the tests. This time all must be OK.

       Installing the built perl on DG/UX

       Run the command "make install"

AUTHOR

       Takis Psarogiannakopoulos Universirty of Cambridge Centre for Mathematical Sciences Department of Pure Mathematics Wilberforce road Cam-
       bridge CB3 0WB , UK email <takis@XFree86.Org>

SEE ALSO

       perl(1).

perl v5.8.0							    2003-02-18							       PERLDGUX(1)