Description of problem:

"gem install licensee" fails with an error with mageia's ruby. It succeeds after doing «PATH=/home/shlomif/apps/prog/ruby-2.7.x/bin:"$PATH"» with ruby-2.7.1 built from source. Here is the log:

```
+-zsh:1> gem install licensee
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /usr/local/share/gems/specifications/childprocess-0.7.0.gemspec:16.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /usr/local/share/gems/specifications/highline-1.7.10.gemspec:20.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /usr/local/share/gems/specifications/msgpack-1.2.4.gemspec:19.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /usr/local/share/gems/specifications/multipart-post-2.0.0.gemspec:17.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /usr/local/share/gems/specifications/sass-3.4.25.gemspec:19.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /usr/local/share/gems/specifications/multipart-post-2.0.0.gemspec:17.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /usr/local/share/gems/specifications/childprocess-0.7.0.gemspec:16.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /usr/local/share/gems/specifications/highline-1.7.10.gemspec:20.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /usr/local/share/gems/specifications/msgpack-1.2.4.gemspec:19.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /usr/local/share/gems/specifications/sass-3.4.25.gemspec:19.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /usr/local/share/gems/specifications/childprocess-0.7.0.gemspec:16.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /usr/local/share/gems/specifications/highline-1.7.10.gemspec:20.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /usr/local/share/gems/specifications/msgpack-1.2.4.gemspec:19.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /usr/local/share/gems/specifications/multipart-post-2.0.0.gemspec:17.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /usr/local/share/gems/specifications/sass-3.4.25.gemspec:19.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /usr/local/share/gems/specifications/childprocess-0.7.0.gemspec:16.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /usr/local/share/gems/specifications/highline-1.7.10.gemspec:20.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /usr/local/share/gems/specifications/msgpack-1.2.4.gemspec:19.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /usr/local/share/gems/specifications/multipart-post-2.0.0.gemspec:17.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /usr/local/share/gems/specifications/sass-3.4.25.gemspec:19.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /usr/local/share/gems/specifications/childprocess-0.7.0.gemspec:16.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /usr/local/share/gems/specifications/highline-1.7.10.gemspec:20.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /usr/local/share/gems/specifications/msgpack-1.2.4.gemspec:19.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /usr/local/share/gems/specifications/multipart-post-2.0.0.gemspec:17.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /usr/local/share/gems/specifications/sass-3.4.25.gemspec:19.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /usr/local/share/gems/specifications/childprocess-0.7.0.gemspec:16.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /usr/local/share/gems/specifications/highline-1.7.10.gemspec:20.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /usr/local/share/gems/specifications/msgpack-1.2.4.gemspec:19.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /usr/local/share/gems/specifications/multipart-post-2.0.0.gemspec:17.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /usr/local/share/gems/specifications/sass-3.4.25.gemspec:19.
Successfully installed dotenv-2.7.6
Successfully installed sawyer-0.8.2
Successfully installed octokit-4.18.0
Successfully installed mini_portile2-2.4.0
Building native extensions. This could take a while...
ERROR:  Error installing licensee:
	ERROR: Failed to build gem native extension.

    current directory: /home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ext/nokogiri
/usr/bin/ruby -I /usr/share/rubygems -r ./siteconf20200727-457015-16ib6dc.rb extconf.rb
checking if the C compiler accepts ... yes
Building nokogiri using packaged libraries.
Using mini_portile version 2.4.0
checking for gzdopen() in -lz... yes
checking for iconv... yes
************************************************************************
IMPORTANT NOTICE:

Building Nokogiri with a packaged version of libxml2-2.9.10
with the following patches applied:
	- 0001-Revert-Do-not-URI-escape-in-server-side-includes.patch
	- 0002-Remove-script-macro-support.patch
	- 0003-Update-entities-to-remove-handling-of-ssi.patch
	- 0004-libxml2.la-is-in-top_builddir.patch
	- 0005-Fix-infinite-loop-in-xmlStringLenDecodeEntities.patch

Team Nokogiri will keep on doing their best to provide security
updates in a timely manner, but if this is a concern for you and want
to use the system library instead; abort this installation process and
reinstall nokogiri as follows:

    gem install nokogiri -- --use-system-libraries
        [--with-xml2-config=/path/to/xml2-config]
        [--with-xslt-config=/path/to/xslt-config]

If you are using Bundler, tell it to use the option:

    bundle config build.nokogiri --use-system-libraries
    bundle install

Note, however, that nokogiri is not fully compatible with arbitrary
versions of libxml2 provided by OS/package vendors.
************************************************************************
Extracting libxml2-2.9.10.tar.gz into tmp/x86_64-mageia-linux-gnu/ports/libxml2/2.9.10... OK
Running git apply with /home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/patches/libxml2/0001-Revert-Do-not-URI-escape-in-server-side-includes.patch... OK
Running git apply with /home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/patches/libxml2/0002-Remove-script-macro-support.patch... OK
Running git apply with /home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/patches/libxml2/0003-Update-entities-to-remove-handling-of-ssi.patch... OK
Running git apply with /home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/patches/libxml2/0004-libxml2.la-is-in-top_builddir.patch... OK
Running git apply with /home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/patches/libxml2/0005-Fix-infinite-loop-in-xmlStringLenDecodeEntities.patch... OK
Running 'configure' for libxml2 2.9.10... OK
Running 'compile' for libxml2 2.9.10... OK
Running 'install' for libxml2 2.9.10... OK
Activating libxml2 2.9.10 (from /home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10)...
************************************************************************
IMPORTANT NOTICE:

Building Nokogiri with a packaged version of libxslt-1.1.34.

Team Nokogiri will keep on doing their best to provide security
updates in a timely manner, but if this is a concern for you and want
to use the system library instead; abort this installation process and
reinstall nokogiri as follows:

    gem install nokogiri -- --use-system-libraries
        [--with-xml2-config=/path/to/xml2-config]
        [--with-xslt-config=/path/to/xslt-config]

If you are using Bundler, tell it to use the option:

    bundle config build.nokogiri --use-system-libraries
    bundle install
************************************************************************
Extracting libxslt-1.1.34.tar.gz into tmp/x86_64-mageia-linux-gnu/ports/libxslt/1.1.34... OK
Running 'configure' for libxslt 1.1.34... OK
Running 'compile' for libxslt 1.1.34... OK
Running 'install' for libxslt 1.1.34... OK
Activating libxslt 1.1.34 (from /home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxslt/1.1.34)...
checking for -llzma... yes
checking for xmlParseDoc() in libxml/parser.h... yes
checking for xsltParseStylesheetDoc() in libxslt/xslt.h... yes
checking for exsltFuncRegister() in libexslt/exslt.h... yes
checking for xmlHasFeature()... yes
checking for xmlFirstElementChild()... yes
checking for xmlRelaxNGSetParserStructuredErrors()... yes
checking for xmlRelaxNGSetParserStructuredErrors()... yes
checking for xmlRelaxNGSetValidStructuredErrors()... yes
checking for xmlSchemaSetValidStructuredErrors()... yes
checking for xmlSchemaSetParserStructuredErrors()... yes
creating Makefile

current directory: /home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ext/nokogiri
make "DESTDIR=" clean
rm -f 
rm -f nokogiri.so  *.o  *.bak mkmf.log .*.time

current directory: /home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ext/nokogiri
make "DESTDIR="
x86_64-mageia-linux-gnu-gcc -I. -I/usr/include -I/usr/include/ruby/backward -I/usr/include -I. -DHAVE_XMLPARSEDOC -DHAVE_XSLTPARSESTYLESHEETDOC -DHAVE_EXSLTFUNCREGISTER -DHAVE_XMLHASFEATURE -DHAVE_XMLFIRSTELEMENTCHILD -DHAVE_XMLRELAXNGSETPARSERSTRUCTUREDERRORS -DHAVE_XMLRELAXNGSETPARSERSTRUCTUREDERRORS -DHAVE_XMLRELAXNGSETVALIDSTRUCTUREDERRORS -DHAVE_XMLSCHEMASETVALIDSTRUCTUREDERRORS -DHAVE_XMLSCHEMASETPARSERSTRUCTUREDERRORS -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10/include/libxml2 -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxslt/1.1.34/include -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10/include/libxml2    "-DNOKOGIRI_LIBXML2_PATH=\"/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10\"" "-DNOKOGIRI_LIBXML2_PATCHES=\"0001-Revert-Do-not-URI-escape-in-server-side-includes.patch 0002-Remove-script-macro-support.patch 0003-Update-entities-to-remove-handling-of-ssi.patch 0004-libxml2.la-is-in-top_builddir.patch 0005-Fix-infinite-loop-in-xmlStringLenDecodeEntities.patch\"" "-DNOKOGIRI_LIBXSLT_PATH=\"/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxslt/1.1.34\"" "-DNOKOGIRI_LIBXSLT_PATCHES=\"\"" -fPIC -O2 -g -pipe -Wformat -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fstack-protector --param=ssp-buffer-size=4 -fasynchronous-unwind-tables -fPIC  -g -DXP_UNIX -Wall -Wcast-qual -Wwrite-strings -Wmissing-noreturn -Winline -DNOKOGIRI_USE_PACKAGED_LIBRARIES  -o html_document.o -c html_document.c
x86_64-mageia-linux-gnu-gcc -I. -I/usr/include -I/usr/include/ruby/backward -I/usr/include -I. -DHAVE_XMLPARSEDOC -DHAVE_XSLTPARSESTYLESHEETDOC -DHAVE_EXSLTFUNCREGISTER -DHAVE_XMLHASFEATURE -DHAVE_XMLFIRSTELEMENTCHILD -DHAVE_XMLRELAXNGSETPARSERSTRUCTUREDERRORS -DHAVE_XMLRELAXNGSETPARSERSTRUCTUREDERRORS -DHAVE_XMLRELAXNGSETVALIDSTRUCTUREDERRORS -DHAVE_XMLSCHEMASETVALIDSTRUCTUREDERRORS -DHAVE_XMLSCHEMASETPARSERSTRUCTUREDERRORS -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10/include/libxml2 -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxslt/1.1.34/include -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10/include/libxml2    "-DNOKOGIRI_LIBXML2_PATH=\"/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10\"" "-DNOKOGIRI_LIBXML2_PATCHES=\"0001-Revert-Do-not-URI-escape-in-server-side-includes.patch 0002-Remove-script-macro-support.patch 0003-Update-entities-to-remove-handling-of-ssi.patch 0004-libxml2.la-is-in-top_builddir.patch 0005-Fix-infinite-loop-in-xmlStringLenDecodeEntities.patch\"" "-DNOKOGIRI_LIBXSLT_PATH=\"/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxslt/1.1.34\"" "-DNOKOGIRI_LIBXSLT_PATCHES=\"\"" -fPIC -O2 -g -pipe -Wformat -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fstack-protector --param=ssp-buffer-size=4 -fasynchronous-unwind-tables -fPIC  -g -DXP_UNIX -Wall -Wcast-qual -Wwrite-strings -Wmissing-noreturn -Winline -DNOKOGIRI_USE_PACKAGED_LIBRARIES  -o html_element_description.o -c html_element_description.c
x86_64-mageia-linux-gnu-gcc -I. -I/usr/include -I/usr/include/ruby/backward -I/usr/include -I. -DHAVE_XMLPARSEDOC -DHAVE_XSLTPARSESTYLESHEETDOC -DHAVE_EXSLTFUNCREGISTER -DHAVE_XMLHASFEATURE -DHAVE_XMLFIRSTELEMENTCHILD -DHAVE_XMLRELAXNGSETPARSERSTRUCTUREDERRORS -DHAVE_XMLRELAXNGSETPARSERSTRUCTUREDERRORS -DHAVE_XMLRELAXNGSETVALIDSTRUCTUREDERRORS -DHAVE_XMLSCHEMASETVALIDSTRUCTUREDERRORS -DHAVE_XMLSCHEMASETPARSERSTRUCTUREDERRORS -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10/include/libxml2 -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxslt/1.1.34/include -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10/include/libxml2    "-DNOKOGIRI_LIBXML2_PATH=\"/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10\"" "-DNOKOGIRI_LIBXML2_PATCHES=\"0001-Revert-Do-not-URI-escape-in-server-side-includes.patch 0002-Remove-script-macro-support.patch 0003-Update-entities-to-remove-handling-of-ssi.patch 0004-libxml2.la-is-in-top_builddir.patch 0005-Fix-infinite-loop-in-xmlStringLenDecodeEntities.patch\"" "-DNOKOGIRI_LIBXSLT_PATH=\"/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxslt/1.1.34\"" "-DNOKOGIRI_LIBXSLT_PATCHES=\"\"" -fPIC -O2 -g -pipe -Wformat -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fstack-protector --param=ssp-buffer-size=4 -fasynchronous-unwind-tables -fPIC  -g -DXP_UNIX -Wall -Wcast-qual -Wwrite-strings -Wmissing-noreturn -Winline -DNOKOGIRI_USE_PACKAGED_LIBRARIES  -o html_entity_lookup.o -c html_entity_lookup.c
x86_64-mageia-linux-gnu-gcc -I. -I/usr/include -I/usr/include/ruby/backward -I/usr/include -I. -DHAVE_XMLPARSEDOC -DHAVE_XSLTPARSESTYLESHEETDOC -DHAVE_EXSLTFUNCREGISTER -DHAVE_XMLHASFEATURE -DHAVE_XMLFIRSTELEMENTCHILD -DHAVE_XMLRELAXNGSETPARSERSTRUCTUREDERRORS -DHAVE_XMLRELAXNGSETPARSERSTRUCTUREDERRORS -DHAVE_XMLRELAXNGSETVALIDSTRUCTUREDERRORS -DHAVE_XMLSCHEMASETVALIDSTRUCTUREDERRORS -DHAVE_XMLSCHEMASETPARSERSTRUCTUREDERRORS -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10/include/libxml2 -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxslt/1.1.34/include -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10/include/libxml2    "-DNOKOGIRI_LIBXML2_PATH=\"/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10\"" "-DNOKOGIRI_LIBXML2_PATCHES=\"0001-Revert-Do-not-URI-escape-in-server-side-includes.patch 0002-Remove-script-macro-support.patch 0003-Update-entities-to-remove-handling-of-ssi.patch 0004-libxml2.la-is-in-top_builddir.patch 0005-Fix-infinite-loop-in-xmlStringLenDecodeEntities.patch\"" "-DNOKOGIRI_LIBXSLT_PATH=\"/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxslt/1.1.34\"" "-DNOKOGIRI_LIBXSLT_PATCHES=\"\"" -fPIC -O2 -g -pipe -Wformat -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fstack-protector --param=ssp-buffer-size=4 -fasynchronous-unwind-tables -fPIC  -g -DXP_UNIX -Wall -Wcast-qual -Wwrite-strings -Wmissing-noreturn -Winline -DNOKOGIRI_USE_PACKAGED_LIBRARIES  -o html_sax_parser_context.o -c html_sax_parser_context.c
x86_64-mageia-linux-gnu-gcc -I. -I/usr/include -I/usr/include/ruby/backward -I/usr/include -I. -DHAVE_XMLPARSEDOC -DHAVE_XSLTPARSESTYLESHEETDOC -DHAVE_EXSLTFUNCREGISTER -DHAVE_XMLHASFEATURE -DHAVE_XMLFIRSTELEMENTCHILD -DHAVE_XMLRELAXNGSETPARSERSTRUCTUREDERRORS -DHAVE_XMLRELAXNGSETPARSERSTRUCTUREDERRORS -DHAVE_XMLRELAXNGSETVALIDSTRUCTUREDERRORS -DHAVE_XMLSCHEMASETVALIDSTRUCTUREDERRORS -DHAVE_XMLSCHEMASETPARSERSTRUCTUREDERRORS -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10/include/libxml2 -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxslt/1.1.34/include -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10/include/libxml2    "-DNOKOGIRI_LIBXML2_PATH=\"/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10\"" "-DNOKOGIRI_LIBXML2_PATCHES=\"0001-Revert-Do-not-URI-escape-in-server-side-includes.patch 0002-Remove-script-macro-support.patch 0003-Update-entities-to-remove-handling-of-ssi.patch 0004-libxml2.la-is-in-top_builddir.patch 0005-Fix-infinite-loop-in-xmlStringLenDecodeEntities.patch\"" "-DNOKOGIRI_LIBXSLT_PATH=\"/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxslt/1.1.34\"" "-DNOKOGIRI_LIBXSLT_PATCHES=\"\"" -fPIC -O2 -g -pipe -Wformat -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fstack-protector --param=ssp-buffer-size=4 -fasynchronous-unwind-tables -fPIC  -g -DXP_UNIX -Wall -Wcast-qual -Wwrite-strings -Wmissing-noreturn -Winline -DNOKOGIRI_USE_PACKAGED_LIBRARIES  -o html_sax_push_parser.o -c html_sax_push_parser.c
x86_64-mageia-linux-gnu-gcc -I. -I/usr/include -I/usr/include/ruby/backward -I/usr/include -I. -DHAVE_XMLPARSEDOC -DHAVE_XSLTPARSESTYLESHEETDOC -DHAVE_EXSLTFUNCREGISTER -DHAVE_XMLHASFEATURE -DHAVE_XMLFIRSTELEMENTCHILD -DHAVE_XMLRELAXNGSETPARSERSTRUCTUREDERRORS -DHAVE_XMLRELAXNGSETPARSERSTRUCTUREDERRORS -DHAVE_XMLRELAXNGSETVALIDSTRUCTUREDERRORS -DHAVE_XMLSCHEMASETVALIDSTRUCTUREDERRORS -DHAVE_XMLSCHEMASETPARSERSTRUCTUREDERRORS -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10/include/libxml2 -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxslt/1.1.34/include -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10/include/libxml2    "-DNOKOGIRI_LIBXML2_PATH=\"/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10\"" "-DNOKOGIRI_LIBXML2_PATCHES=\"0001-Revert-Do-not-URI-escape-in-server-side-includes.patch 0002-Remove-script-macro-support.patch 0003-Update-entities-to-remove-handling-of-ssi.patch 0004-libxml2.la-is-in-top_builddir.patch 0005-Fix-infinite-loop-in-xmlStringLenDecodeEntities.patch\"" "-DNOKOGIRI_LIBXSLT_PATH=\"/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxslt/1.1.34\"" "-DNOKOGIRI_LIBXSLT_PATCHES=\"\"" -fPIC -O2 -g -pipe -Wformat -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fstack-protector --param=ssp-buffer-size=4 -fasynchronous-unwind-tables -fPIC  -g -DXP_UNIX -Wall -Wcast-qual -Wwrite-strings -Wmissing-noreturn -Winline -DNOKOGIRI_USE_PACKAGED_LIBRARIES  -o nokogiri.o -c nokogiri.c
x86_64-mageia-linux-gnu-gcc -I. -I/usr/include -I/usr/include/ruby/backward -I/usr/include -I. -DHAVE_XMLPARSEDOC -DHAVE_XSLTPARSESTYLESHEETDOC -DHAVE_EXSLTFUNCREGISTER -DHAVE_XMLHASFEATURE -DHAVE_XMLFIRSTELEMENTCHILD -DHAVE_XMLRELAXNGSETPARSERSTRUCTUREDERRORS -DHAVE_XMLRELAXNGSETPARSERSTRUCTUREDERRORS -DHAVE_XMLRELAXNGSETVALIDSTRUCTUREDERRORS -DHAVE_XMLSCHEMASETVALIDSTRUCTUREDERRORS -DHAVE_XMLSCHEMASETPARSERSTRUCTUREDERRORS -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10/include/libxml2 -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxslt/1.1.34/include -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10/include/libxml2    "-DNOKOGIRI_LIBXML2_PATH=\"/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10\"" "-DNOKOGIRI_LIBXML2_PATCHES=\"0001-Revert-Do-not-URI-escape-in-server-side-includes.patch 0002-Remove-script-macro-support.patch 0003-Update-entities-to-remove-handling-of-ssi.patch 0004-libxml2.la-is-in-top_builddir.patch 0005-Fix-infinite-loop-in-xmlStringLenDecodeEntities.patch\"" "-DNOKOGIRI_LIBXSLT_PATH=\"/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxslt/1.1.34\"" "-DNOKOGIRI_LIBXSLT_PATCHES=\"\"" -fPIC -O2 -g -pipe -Wformat -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fstack-protector --param=ssp-buffer-size=4 -fasynchronous-unwind-tables -fPIC  -g -DXP_UNIX -Wall -Wcast-qual -Wwrite-strings -Wmissing-noreturn -Winline -DNOKOGIRI_USE_PACKAGED_LIBRARIES  -o xml_attr.o -c xml_attr.c
x86_64-mageia-linux-gnu-gcc -I. -I/usr/include -I/usr/include/ruby/backward -I/usr/include -I. -DHAVE_XMLPARSEDOC -DHAVE_XSLTPARSESTYLESHEETDOC -DHAVE_EXSLTFUNCREGISTER -DHAVE_XMLHASFEATURE -DHAVE_XMLFIRSTELEMENTCHILD -DHAVE_XMLRELAXNGSETPARSERSTRUCTUREDERRORS -DHAVE_XMLRELAXNGSETPARSERSTRUCTUREDERRORS -DHAVE_XMLRELAXNGSETVALIDSTRUCTUREDERRORS -DHAVE_XMLSCHEMASETVALIDSTRUCTUREDERRORS -DHAVE_XMLSCHEMASETPARSERSTRUCTUREDERRORS -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10/include/libxml2 -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxslt/1.1.34/include -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10/include/libxml2    "-DNOKOGIRI_LIBXML2_PATH=\"/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10\"" "-DNOKOGIRI_LIBXML2_PATCHES=\"0001-Revert-Do-not-URI-escape-in-server-side-includes.patch 0002-Remove-script-macro-support.patch 0003-Update-entities-to-remove-handling-of-ssi.patch 0004-libxml2.la-is-in-top_builddir.patch 0005-Fix-infinite-loop-in-xmlStringLenDecodeEntities.patch\"" "-DNOKOGIRI_LIBXSLT_PATH=\"/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxslt/1.1.34\"" "-DNOKOGIRI_LIBXSLT_PATCHES=\"\"" -fPIC -O2 -g -pipe -Wformat -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fstack-protector --param=ssp-buffer-size=4 -fasynchronous-unwind-tables -fPIC  -g -DXP_UNIX -Wall -Wcast-qual -Wwrite-strings -Wmissing-noreturn -Winline -DNOKOGIRI_USE_PACKAGED_LIBRARIES  -o xml_attribute_decl.o -c xml_attribute_decl.c
x86_64-mageia-linux-gnu-gcc -I. -I/usr/include -I/usr/include/ruby/backward -I/usr/include -I. -DHAVE_XMLPARSEDOC -DHAVE_XSLTPARSESTYLESHEETDOC -DHAVE_EXSLTFUNCREGISTER -DHAVE_XMLHASFEATURE -DHAVE_XMLFIRSTELEMENTCHILD -DHAVE_XMLRELAXNGSETPARSERSTRUCTUREDERRORS -DHAVE_XMLRELAXNGSETPARSERSTRUCTUREDERRORS -DHAVE_XMLRELAXNGSETVALIDSTRUCTUREDERRORS -DHAVE_XMLSCHEMASETVALIDSTRUCTUREDERRORS -DHAVE_XMLSCHEMASETPARSERSTRUCTUREDERRORS -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10/include/libxml2 -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxslt/1.1.34/include -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10/include/libxml2    "-DNOKOGIRI_LIBXML2_PATH=\"/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10\"" "-DNOKOGIRI_LIBXML2_PATCHES=\"0001-Revert-Do-not-URI-escape-in-server-side-includes.patch 0002-Remove-script-macro-support.patch 0003-Update-entities-to-remove-handling-of-ssi.patch 0004-libxml2.la-is-in-top_builddir.patch 0005-Fix-infinite-loop-in-xmlStringLenDecodeEntities.patch\"" "-DNOKOGIRI_LIBXSLT_PATH=\"/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxslt/1.1.34\"" "-DNOKOGIRI_LIBXSLT_PATCHES=\"\"" -fPIC -O2 -g -pipe -Wformat -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fstack-protector --param=ssp-buffer-size=4 -fasynchronous-unwind-tables -fPIC  -g -DXP_UNIX -Wall -Wcast-qual -Wwrite-strings -Wmissing-noreturn -Winline -DNOKOGIRI_USE_PACKAGED_LIBRARIES  -o xml_cdata.o -c xml_cdata.c
x86_64-mageia-linux-gnu-gcc -I. -I/usr/include -I/usr/include/ruby/backward -I/usr/include -I. -DHAVE_XMLPARSEDOC -DHAVE_XSLTPARSESTYLESHEETDOC -DHAVE_EXSLTFUNCREGISTER -DHAVE_XMLHASFEATURE -DHAVE_XMLFIRSTELEMENTCHILD -DHAVE_XMLRELAXNGSETPARSERSTRUCTUREDERRORS -DHAVE_XMLRELAXNGSETPARSERSTRUCTUREDERRORS -DHAVE_XMLRELAXNGSETVALIDSTRUCTUREDERRORS -DHAVE_XMLSCHEMASETVALIDSTRUCTUREDERRORS -DHAVE_XMLSCHEMASETPARSERSTRUCTUREDERRORS -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10/include/libxml2 -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxslt/1.1.34/include -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10/include/libxml2    "-DNOKOGIRI_LIBXML2_PATH=\"/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10\"" "-DNOKOGIRI_LIBXML2_PATCHES=\"0001-Revert-Do-not-URI-escape-in-server-side-includes.patch 0002-Remove-script-macro-support.patch 0003-Update-entities-to-remove-handling-of-ssi.patch 0004-libxml2.la-is-in-top_builddir.patch 0005-Fix-infinite-loop-in-xmlStringLenDecodeEntities.patch\"" "-DNOKOGIRI_LIBXSLT_PATH=\"/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxslt/1.1.34\"" "-DNOKOGIRI_LIBXSLT_PATCHES=\"\"" -fPIC -O2 -g -pipe -Wformat -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fstack-protector --param=ssp-buffer-size=4 -fasynchronous-unwind-tables -fPIC  -g -DXP_UNIX -Wall -Wcast-qual -Wwrite-strings -Wmissing-noreturn -Winline -DNOKOGIRI_USE_PACKAGED_LIBRARIES  -o xml_comment.o -c xml_comment.c
x86_64-mageia-linux-gnu-gcc -I. -I/usr/include -I/usr/include/ruby/backward -I/usr/include -I. -DHAVE_XMLPARSEDOC -DHAVE_XSLTPARSESTYLESHEETDOC -DHAVE_EXSLTFUNCREGISTER -DHAVE_XMLHASFEATURE -DHAVE_XMLFIRSTELEMENTCHILD -DHAVE_XMLRELAXNGSETPARSERSTRUCTUREDERRORS -DHAVE_XMLRELAXNGSETPARSERSTRUCTUREDERRORS -DHAVE_XMLRELAXNGSETVALIDSTRUCTUREDERRORS -DHAVE_XMLSCHEMASETVALIDSTRUCTUREDERRORS -DHAVE_XMLSCHEMASETPARSERSTRUCTUREDERRORS -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10/include/libxml2 -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxslt/1.1.34/include -I/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10/include/libxml2    "-DNOKOGIRI_LIBXML2_PATH=\"/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxml2/2.9.10\"" "-DNOKOGIRI_LIBXML2_PATCHES=\"0001-Revert-Do-not-URI-escape-in-server-side-includes.patch 0002-Remove-script-macro-support.patch 0003-Update-entities-to-remove-handling-of-ssi.patch 0004-libxml2.la-is-in-top_builddir.patch 0005-Fix-infinite-loop-in-xmlStringLenDecodeEntities.patch\"" "-DNOKOGIRI_LIBXSLT_PATH=\"/home/shlomif/.gem/ruby/gems/nokogiri-1.10.10/ports/x86_64-mageia-linux-gnu/libxslt/1.1.34\"" "-DNOKOGIRI_LIBXSLT_PATCHES=\"\"" -fPIC -O2 -g -pipe -Wformat -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fstack-protector --param=ssp-buffer-size=4 -fasynchronous-unwind-tables -fPIC  -g -DXP_UNIX -Wall -Wcast-qual -Wwrite-strings -Wmissing-noreturn -Winline -DNOKOGIRI_USE_PACKAGED_LIBRARIES  -o xml_document.o -c xml_document.c
xml_document.c: In function ‘dealloc’:
xml_document.c:49:25: warning: passing argument 2 of ‘rb_st_foreach’ from incompatible pointer type [-Wincompatible-pointer-types]
   49 |   st_foreach(node_hash, dealloc_node_i, (st_data_t)doc);
      |                         ^~~~~~~~~~~~~~
      |                         |
      |                         int (*)(xmlNode *, xmlNode *, xmlDoc *) {aka int (*)(struct _xmlNode *, struct _xmlNode *, struct _xmlDoc *)}
In file included from /usr/include/ruby/intern.h:39,
                 from /usr/include/ruby/ruby.h:2148,
                 from /usr/include/ruby.h:33,
                 from ./nokogiri.h:33,
                 from ./xml_document.h:4,
                 from xml_document.c:1:
/usr/include/ruby/st.h:141:31: note: expected ‘int (*)(st_data_t,  st_data_t,  st_data_t)’ {aka ‘int (*)(long unsigned int,  long unsigned int,  long unsigned int)’} but argument is of type ‘int (*)(xmlNode *, xmlNode *, xmlDoc *)’ {aka ‘int (*)(struct _xmlNode *, struct _xmlNode *, struct _xmlDoc *)’}
  141 | int rb_st_foreach(st_table *, st_foreach_callback_func *, st_data_t);
      |                               ^~~~~~~~~~~~~~~~~~~~~~~~~~
xml_document.c: At top level:
xml_document.c:495:14: error: conflicting types for ‘canonicalize’
  495 | static VALUE canonicalize(int argc, VALUE* argv, VALUE self)
      |              ^~~~~~~~~~~~
In file included from /usr/include/features.h:465,
                 from /usr/include/bits/libc-header-start.h:33,
                 from /usr/include/stdlib.h:25,
                 from ./nokogiri.h:4,
                 from ./xml_document.h:4,
                 from xml_document.c:1:
/usr/include/bits/mathcalls.h:371:1: note: previous declaration of ‘canonicalize’ was here
  371 | __MATHDECL_1 (int, canonicalize,, (_Mdouble_ *__cx, const _Mdouble_ *__x));
      | ^~~~~~~~~~~~
make: *** [Makefile:246: xml_document.o] Error 1

make failed, exit code 2

Gem files will remain installed in /home/shlomif/.gem/ruby/gems/nokogiri-1.10.10 for inspection.
Results logged to /home/shlomif/.gem/ruby/extensions/x86_64-linux/2.7.0/nokogiri-1.10.10/gem_make.out

```