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Difficulty compiling multilib packages that depend on python3.

As part of setting up wayland and xwayland, I'm trying to (re)compile atk and friends on a Slackware64-Multilib system. I've been doing well so far, but trying to get gobject-introspection to compile causes barfing on a python3 header: https://pastebin.com/z4TTVZYe

Anyone know how to get this dep working for a multilib compile?

This needs to be fixed in the Slackware python3 package itself.
The pyconfig.h header file is not multilib-ready and it should be renamed based on whether you build a 32bit or a 64bit package. Then a wrapper pyconfig.h should be put in its place which includes the appropriate pyconfig header for the architecture.

I can not fix this in my multilib repository where I do nothing more but re-packaging the 32bit Slackware packages.

fedora does like this in their python3.spec

Code:

[...]

# For multilib support, files that are different between 32- and 64-bit arches

# need different filenames. Use "64" or "32" according to the word size.

# Currently, the best way to determine an architecture's word size happens to

# be checking %%{_lib}.

%if "%{_lib}" == "lib64"

%global wordsize 64

%else

%global wordsize 32

%endif

[...]

# Multilib support for pyconfig.h

# 32- and 64-bit versions of pyconfig.h are different. For multilib support

# (making it possible to install 32- and 64-bit versions simultaneously),

# we need to install them under different filenames, and to make the common

# "pyconfig.h" include the right file based on architecture.

# See https://bugzilla.redhat.com/show_bug.cgi?id=192747

# Filanames are defined here:

%global _pyconfig32_h pyconfig-32.h

%global _pyconfig64_h pyconfig-64.h

%global _pyconfig_h pyconfig-%{wordsize}.h

[...]

# Make python3-devel multilib-ready

  mv %{buildroot}%{_includedir}/python${LDVersion}/pyconfig.h \

    %{buildroot}%{_includedir}/python${LDVersion}/%{_pyconfig_h}

  cat > %{buildroot}%{_includedir}/python${LDVersion}/pyconfig.h << EOF

#include <bits/wordsize.h>



#if __WORDSIZE == 32

#include "%{_pyconfig32_h}"

#elif __WORDSIZE == 64

#include "%{_pyconfig64_h}"

#else

#error "Unknown word size"

#endif

EOF

[...]

You could check with Pat whether he is willing to add this multilib support to the python3 package.
It will however have a larger chance of success if you provide a patch which produces the desired result, so he does not have to do the research for you.

Here is a quick patch for Pat's python3 SlackBuild based on the fedora spec file above, but I am not sure how to test the original issue. I am also not sure its correct for s390, arm or armel, but I have no way of testing those.

Code:

--- python3.SlackBuild.orig        2019-09-22 08:35:06.042816493 -0700

+++ python3.SlackBuild        2019-09-22 08:54:14.603323876 -0700

@@ -132,6 +132,23 @@

 # Fix permissions on dynamic libraries.

 find $PKG -type f -perm 555 -exec chmod 755 '{}' \;

 

+# Multilib support

+mv $PKG/usr/include/python${BRANCH_VERSION}m/pyconfig.h \

+  $PKG/usr/include/python${BRANCH_VERSION}m/pyconfig-${LIBDIRSUFFIX:-32}.h ||

+  exit 1

+

+cat > $PKG/usr/include/python${BRANCH_VERSION}m/pyconfig.h << EOF

+#include <bits/wordsize.h>

+

+#if __WORDSIZE == 32

+#include "pyconfig-32.h"

+#elif __WORDSIZE == 64

+#include "pyconfig-64.h"

+#else

+#error "Unknown word size"

+#endif

+EOF

+

 # Install docs.

 mkdir -p $PKG/usr/doc/$PKGNAM-$VERSION

 cp -a README.rst LICENSE Misc $PKG/usr/doc/$PKGNAM-$VERSION

O.O Thanks guys! I'm still working on trying to run Wayland/Enlightenment, running into other issues, but it's great to see that I have something to go on now, I will definitely apply the patch to the SlackBuild.

Quote:

Originally Posted by Alien Bob (Post 6039273)

Does convertpkg-compat32 strip header files from the package? I think this may be an issue for python3-compat32, since with the above patch we are expecting a pyconfig-32.h file in the package, and I'm not seeing it after running the package thru convertpkg-compat32.

Quote:

Originally Posted by brokenshakles (Post 6039492)

I think the convertpkg-compat32 script needs an exception for cases like this, I haven't tested this, but I think it should change this section.

Code:

# Stuff we need to keep, we move into KDEP/ and move it back later:

mkdir KEEP

if [ "$PKGNAM" = "mesa" ];

then

  cp -a --parents usr/share/vulkan/icd.d KEEP/

fi

To something like this.

Code:

# Stuff we need to keep, we move into KDEP/ and move it back later:

mkdir KEEP

if [ "$PKGNAM" = "mesa" ];

then

  cp -a --parents usr/share/vulkan/icd.d KEEP/

elif [ "$PKGNAM" = "python3" ];

then

  cp -a --parents usr/include/python*m/pyconfig-*.h KEEP/

fi

Or you could always add the file directory to the package directory and run makepkg manually just to test it.