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https://issues.apache.org/jira/browse/SVN-4841?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17103442#comment-17103442
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Anatol Pomozov commented on SVN-4841:
-------------------------------------
I do not know the decision making arguments behind the current Subversion's
maintenance schedule. But I wonder if there is a chance to make a point release
for the latest released version - 1.13. A lot of distros (including Arch Linux
that I am focusing at) use 1.13 and it will be helpful for them to get SWIG4,
ruby27 and other fixes.
Or maybe 1.14 can be released in the nearest future?
> Subversion fails to compile with ruby-2.7
> -----------------------------------------
>
> Key: SVN-4841
> URL: https://issues.apache.org/jira/browse/SVN-4841
> Project: Subversion
> Issue Type: Bug
> Components: bindings_swig_ruby
> Affects Versions: 1.13.0
> Environment: Arch Linux with ruby 2.7
> Reporter: Anatol Pomozov
> Assignee: James McCoy
> Priority: Major
> Fix For: 1.14.0
>
>
> I am trying to compile subversion with ruby-2.7 and there is an issue:
>
> first there is a suspicious compiler warning:
> {noformat}
> gcc: error: unrecognized command line option ‘-prefer-pic’
> [root@wolf subversion-1.13.0]# gcc -march=x86-64 -mtune=generic -O2 -pipe
> -fno-plt -pthread -Wno-int-to-pointer-cast -D_FORTIFY_SOURCE=2 -DLINUX
> -D_REENTRANT -D_GNU_SOURCE -DQT_DBUS_LIB -DQT_GUI_LIB -DQT_CORE_LIB
> -I/build/subversion/src/subversion-1.13.0/subversion
> -I/build/subversion/src/subversion-1.13.0/subversion/include
> -I/build/subversion/src/subversion-1.13.0/subversion/bindings/swig
> -I/build/subversion/src/subversion-1.13.0/subversion/bindings/swig/include
> -I/build/subversion/src/subversion-1.13.0/subversion/bindings/swig/proxy
> -I/build/subversion/src/subversion-1.13.0/subversion/bindings/swig/proxy
> -I/usr/include/apr-1 -I/usr/include/apr-1 -I/usr/include -I.
> -I/usr/include/ruby-2.7.0 -I/usr/include/ruby-2.7.0/ruby
> -I/usr/include/ruby-2.7.0/ruby/backward
> -I/usr/include/ruby-2.7.0/x86_64-linux
> -I/build/subversion/src/subversion-1.13.0/subversion/bindings/swig/ruby/libsvn_swig_ruby
> -c -o subversion/bindings/swig/ruby/svn_client.lo
> subversion/bindings/swig/ruby/svn_client.c
> subversion/bindings/swig/ruby/svn_client.c: In function
> ‘SWIG_Ruby_ConvertPtrAndOwn’:
> subversion/bindings/swig/ruby/svn_client.c:1666:13: warning: implicit
> declaration of function ‘assert’ [-Wimplicit-function-declaration]
> 1666 | assert(own); /* badly formed typemap which will lead to a memory leak
> - it must set and use own to delete *ptr */
> | ^~~~~~
> subversion/bindings/swig/ruby/svn_client.c:1394:1: note: ‘assert’ is defined
> in header ‘<assert.h>’; did you forget to ‘#include <assert.h>’?
> 1393 | #include "assert.h"
> +++ |+#include <assert.h>
> 1394 |{noformat}
>
> Then ruby tests fail:
> {noformat}
> /usr/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:92:in `require':
> /build/subversion/src/subversion-1.13.0/subversion/bindings/swig/ruby/libsvn_swig_ruby/.libs/libsvn_swig_ruby-1.so.0:
> undefined symbol: assert -
> /build/subversion/src/subversion-1.13.0/subversion/bindings/swig/ruby/.ext/svn/ext/core.so
> (LoadError)
> from /usr/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:92:in
> `require'
> from
> /build/subversion/src/subversion-1.13.0/subversion/bindings/swig/ruby/svn/error.rb:21:in
> `<top (required)>'
> from /usr/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:92:in
> `require'
> from /usr/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:92:in
> `require'
> from
> /build/subversion/src/subversion-1.13.0/subversion/bindings/swig/ruby/svn/core.rb:25:in
> `<top (required)>'
> from /usr/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:92:in
> `require'
> from /usr/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:92:in
> `require'
> from
> /build/subversion/src/subversion-1.13.0/subversion/bindings/swig/ruby/test/run-test.rb:47:in
> `<main>'
> make: *** [Makefile:962: check-swig-rb] Error 1{noformat}
>
> After some debugging I found that ruby-2.7 introduced a new file under
> '/usr/include/ruby-2.7.0/ruby/assert.h' and subversion build includes path
> '/usr/include/ruby-2.7.0/' before standard includes path. Thus ruby's version
> of "assert.h" gets included and it contains no definition of assert()
> function.
>
> Is it something you can fix?
>
> I feel that /usr/include/ruby-2.7.0/ include path should be enough for
> subversion. No need to include /usr/include/ruby-2.7.0/ruby and
> /usr/include/ruby-2.7.0/backward in build/ac-macros/swig.m4
> {noformat}
> AC_CACHE_CHECK([for Ruby include path], [svn_cv_ruby_includes],[
> if test -d "$rbconfig_rubyhdrdir"; then
> dnl Ruby >=1.9
> svn_cv_ruby_includes="-I. -I$rbconfig_rubyhdrdir
> -I$rbconfig_rubyhdrdir/ruby -I$rbconfig_rubyhdrdir/ruby/backward"
> if test -d "$rbconfig_rubyarchhdrdir"; then
> dnl Ruby >=2.0
> svn_cv_ruby_includes="$svn_cv_ruby_includes
> -I$rbconfig_rubyarchhdrdir"
> else
> svn_cv_ruby_includes="$svn_cv_ruby_includes
> -I$rbconfig_rubyhdrdir/$rbconfig_arch"
> fi
> else
> dnl Ruby 1.8
> svn_cv_ruby_includes="-I. -I$rbconfig_archdir"
> fi
> ])
> {noformat}
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