subversion-1.14.5 FTBFS with Ruby 3.4.x

[Douglas R. Reno]

While trying to build Subversion with Ruby-3.4.5 (needed to clone a repo from Sourceforge for a data recovery program), it fails to build with incompatible pointer type errors.

I was trying to check Subversion's upstream but their ViewVC instance now requires a username and password, and there doesn't seem to be a way to register. I'll look at other distros later and provide a fix if someone else doesn't beat me to it.

The errors are as follows:

In file included from /usr/include/ruby-3.4.0/ruby/internal/assume.h:29,
                 from /usr/include/ruby-3.4.0/ruby/backward/2/assume.h:24,
                 from /usr/include/ruby-3.4.0/ruby/defines.h:72,
                 from /usr/include/ruby-3.4.0/ruby/ruby.h:25:
subversion/bindings/swig/ruby/svn_delta.c: In function ‘SWIG_AsVal_long’: 
/usr/include/ruby-3.4.0/ruby/internal/anyargs.h:385:45: error: passing 
argument 1 of ‘rb_rescue’ from incompatible pointer type [-
Wincompatible-pointer-types]

and

subversion/bindings/swig/ruby/svn_client.c: In function 
‘SWIG_RubyIterateTrackings’:
subversion/bindings/swig/ruby/svn_client.c:1293:35: error: passing 
argument 2 of ‘rb_st_foreach’ from incompatible pointer type [-
Wincompatible-pointer-types] 
 1293 |   st_foreach(swig_ruby_trackings, (int (*)
(ANYARGS))&swig_ruby_internal_iterate_callback, (st_data_t)meth);
      |                                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |                                   |
      |                                   int (*)(void)

As well as dozens of others. I've got a complete build log at ​https://linuxfromscratch.org/~renodr/subversion-1.14.5-fail.log

I was able to work around it on my system by setting -Wno-incompatible-pointer-types, but that isn't acceptable for the book at all. I only did it in a hurry since I need to do a fast turnaround for an old client of mine.

[Joe Locash]

Replying to Douglas R. Reno:

I was able to work around it on my system by setting -Wno-incompatible-pointer-types, but that isn't acceptable for the book at all. I only did it in a hurry since I need to do a fast turnaround for an old client of mine.

I checked a couple other distros and they all seem to avoid the issue by not building the Ruby bindings when 3.4.x is installed or doing something similar. I talked with my son who works for Redhat and they also use -Wno-error=incompatible-pointer-types.

If building the Ruby bindings this sed should do it:

sed -i 's/Wno-int-to-pointer-cast/std=gnu17/' Makefile

and then make swig-rb

[Bruce Dubbs]

Indeed, adding the sed above immediately before the 'make swig-rb' line allowed the ruby bindings to build but with a LOTS of warnings like '...' is deprecated.

The FTBFS issue is fairly obviously a gcc-15 issue.

In my log, the ruby related build output starts at line 1071 (43%) and ends at line 1631 (66%). The install portion started at line 2217 (90%) and ended at line 2451 (100%)

The packages for the ruby bindings needs a complete rework by upstream, but since so many developers have migrated to git, I'm not sure that there is any interest in that.

The ruby files installed were:

$ ls -lR /usr/lib/ruby/site_ruby/3.4.0
/usr/lib/ruby/site_ruby/3.4.0:
total 8
drwxr-xr-x 2 root root 4096 Jul 28 14:52 svn
drwxr-xr-x 3 root root 4096 Jul 28 14:52 x86_64-linux

/usr/lib/ruby/site_ruby/3.4.0/svn:
total 192
-rw-r--r-- 1 root root 28241 Jul 28 14:52 client.rb
-rw-r--r-- 1 root root 20386 Jul 28 14:52 commit-mailer.rb
-rw-r--r-- 1 root root 21968 Jul 28 14:52 core.rb
-rw-r--r-- 1 root root 14599 Jul 28 14:52 delta.rb
-rw-r--r-- 1 root root  3104 Jul 28 14:52 error.rb
-rw-r--r-- 1 root root 15306 Jul 28 14:52 fs.rb
-rw-r--r-- 1 root root  9308 Jul 28 14:52 info.rb
-rw-r--r-- 1 root root 11304 Jul 28 14:52 ra.rb
-rw-r--r-- 1 root root 15521 Jul 28 14:52 repos.rb
-rw-r--r-- 1 root root  5251 Jul 28 14:52 synchronizer.rb
-rw-r--r-- 1 root root  5010 Jul 28 14:52 util.rb
-rw-r--r-- 1 root root 24794 Jul 28 14:52 wc.rb

/usr/lib/ruby/site_ruby/3.4.0/x86_64-linux:
total 4
drwxr-xr-x 3 root root 4096 Jul 28 14:52 svn

/usr/lib/ruby/site_ruby/3.4.0/x86_64-linux/svn:
total 4
drwxr-xr-x 2 root root 4096 Jul 28 14:52 ext

/usr/lib/ruby/site_ruby/3.4.0/x86_64-linux/svn/ext:
total 10036
-rwxr-xr-x 1 root root    1507 Jul 28 14:52 client.la
-rwxr-xr-x 1 root root 1998624 Jul 28 14:52 client.so
-rwxr-xr-x 1 root root    1495 Jul 28 14:52 core.la
-rwxr-xr-x 1 root root 2484656 Jul 28 14:52 core.so
-rwxr-xr-x 1 root root    1501 Jul 28 14:52 delta.la
-rwxr-xr-x 1 root root  491576 Jul 28 14:52 delta.so
-rwxr-xr-x 1 root root    1495 Jul 28 14:52 diff.la
-rwxr-xr-x 1 root root   74160 Jul 28 14:52 diff.so
-rwxr-xr-x 1 root root    1483 Jul 28 14:52 fs.la
-rwxr-xr-x 1 root root  839904 Jul 28 14:52 fs.so
-rwxr-xr-x 1 root root    1483 Jul 28 14:52 ra.la
-rwxr-xr-x 1 root root  919064 Jul 28 14:52 ra.so
-rwxr-xr-x 1 root root    1501 Jul 28 14:52 repos.la
-rwxr-xr-x 1 root root 1116944 Jul 28 14:52 repos.so
-rwxr-xr-x 1 root root    1483 Jul 28 14:52 wc.la
-rwxr-xr-x 1 root root 2286856 Jul 28 14:52 wc.so

[Douglas R. Reno]

Fixed at bbdab60f3433822a2c5da5a4a54941821f1b68b0