I have a "setup" to compile a C and some assembler modules for an external function.
...
ext_modules = [Extension('console.zconsole',['console.c','cpwto.s','qedit.s'],
extra_compile_args=["-Wc,ASM,LIST(/u/tmp/py/c.lst),SOURCE,WARN64,XREF","-Wa,LIST,RENT"],
...

The assembler fails to compile cleanly because

No Overriding ASMAOPT Parameters
Overriding Parameters- NODECK,OBJECT,TERM,NOLIST,NOESD,NORLD,NOXREF,FLAG(4),ASA,GOFF,XPLINK,LIST,RENT
No Process Statements
** ASMA400W Error in invocation parameter - XPLINK
...

Return Code 004

The compile statement is

/bin/xlc -fno-strict-aliasing -DNDEBUG -O3 -qarch=10
-qlanglvl=extc99 -q64 -Wc,DLL -D_XOPEN_SOURCE_EXTENDED
-D_UNIX03_THREADS -D_POSIX_THREADS -D_OPEN_SYS_FILE_EXT
-qexportall -qascii -qstrict -qnocsect -Wa,asa,goff
-Wa,xplink -qgonumber -qenum=int -I//'COLIN.MQ930.SCSQC370'
-I. -I/u/tmp/zpymqi/env/include
-I/usr/lpp/IBM/cyp/v3r8/pyz/include/python3.8 -c console.c
-o build/temp.os390-27.00-1090-3.8/console.o
-Wc,ASM,LIST(/u/tmp/py/c.lst),SOURCE,WARN64,XREF
-Wa,LIST,RENT

and I get

FSUM3212 xlc: Command option -fno-strict-aliasing is incorrect for z/OS platform - ignored.

Is there a configuration file I can change to remove these options?


Colin

------------------------------
Colin Paice
------------------------------

Hey Colin, one way you can remove these options if desired is to subclass build_ext. Here's an example for setuptools:

from setuptools.command.build_ext import build_ext
from setuptools import setup

class BuildExt(build_ext):
    def build_extensions(self):
        print(self.compiler.compiler_so)
        if '-fno-strict-aliasing' in self.compiler.compiler_so:
            self.compiler.compiler_so.remove('-fno-strict-aliasing')
        if '-Wa,xplink' in self.compiler.compiler_so:
            self.compiler.compiler_so.remove('-Wa,xplink')
        super().build_extensions()

setup(...
      cmdclass = {'build_ext': BuildExt},
      ext_modules=[Extension(...)]
      ...)​

Thanks,

Steven

------------------------------
Steven Pitman
------------------------------

Original Message:
Sent: 7/6/2022 4:34:00 PM
From: Steven Pitman
Subject: RE: Problems with setup and assembler files

Hey Colin, one way you can remove these options if desired is to subclass build_ext. Here's an example for setuptools:

from setuptools.command.build_ext import build_ext
from setuptools import setup

class BuildExt(build_ext):
    def build_extensions(self):
        print(self.compiler.compiler_so)
        if '-fno-strict-aliasing' in self.compiler.compiler_so:
            self.compiler.compiler_so.remove('-fno-strict-aliasing')
        if '-Wa,xplink' in self.compiler.compiler_so:
            self.compiler.compiler_so.remove('-Wa,xplink')
        super().build_extensions()

setup(...
      cmdclass = {'build_ext': BuildExt},
      ext_modules=[Extension(...)]
      ...)​

Thanks,

Steven

------------------------------
Steven Pitman
------------------------------