Originally posted by: SystemAdmin

Hello,

I cannot build Python 2.5.2 on my AIX 6.1 box using gcc.

I have installed the GCC (gcc-4.2.0-3.aix6.1.ppc.rpm)provided
by IBM in their "toolbox for AIX" http://www-03.ibm.com/systems/p/os/aix/linux/toolbox/download.html

I run the following:
./configure --with-gcc
make

The make process runs compiles and so on that are OK,
but it stops with this error:
=== http://... ===
./Modules/ld_so_aix gcc -pthread -bI:Modules/python.exp build/temp.aix-6.1-2.5/usr/local/work/Python-2.5.2/Modules/fcntlmodule.o -o build/lib.aix-6.1-2.5/fcntl.so
ld: 0711-317 ERROR: Undefined symbol: .flock
ld: 0711-345 Use the -bloadmap or -bnoquiet option to obtain more information.
collect2: ld returned 8 exit status

• WARNING: renaming "fcntl" since importing it failed: 0509-022 Cannot load module build/lib.aix-6.1-2.5.

0509-026 System error: A file or directory in the path name does not exist.
error: No such file or directory
make: 1254-004 The error code from the last command is 1.
=============

any suggestion?

thanks

Originally posted by: j.gann

I am not familiar with the particular problem at hand, but developers porting their sw to aix report good success with the gcc packages provided by Michael Perzl -> http://www.perzl.org/aix/

Regards

Originally posted by: SystemAdmin

(an answer to my own question:)

Finally, for the Python build to work, I have added
"-lbsd" to the CCOPT var in the Modules/ld_so_aix script,
so that we have the line:
CCOPT="$CCOPT -Wl,-bM:SRE -Wl,-T512 -Wl,-H512 -lm -lbsd -o $objfile"
instead of:
CCOPT="$CCOPT -Wl,-bM:SRE -Wl,-T512 -Wl,-H512 -lm -o $objfile"

Then python was built correctly

Originally posted by: haubi

This now happens on AIX5.3 too, after upgrading to:
$ oslevel -s
5300-08-09-1013

Even if flock() was provided in libbsd.a before already, the declaration for flock() in <sys/file.h> was not.
Thus python's configure didn't detect flock() and used something else.

But now, as flock() is declared in <sys/file.h>, python's configure detects flock(), but doesn't link libbsd.
This is reported as: http://bugs.python.org/issue4026

Another thing worth to mention is:
There seems to be no flock() implementation for 64bits on AIX5.3 (can't say for AIX6.1) - at least not in libbsd.a,
but <sys/file.h> unconditionally declares flock() even for 64bits.

/haubi/

Originally posted by: SystemAdmin

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Originally posted by: haubi

Just for completion: There is a bug report at python for this issue:
http://bugs.python.org/issue4026