* Package:    dev-ruby/ruby-xslt-0.9.9-r3
 * Repository: gentoo
 * Maintainer: ruby@gentoo.org
 * USE:        abi_x86_64 amd64 elibc_glibc kernel_linux ruby_targets_ruby22 userland_GNU
 * FEATURES:   network-sandbox preserve-libs sandbox userpriv usersandbox
>>> Unpacking source...
 * Running unpack phase for all ...
 * Unpacking .gem file... ...
 [ ok ]
 * Uncompressing metadata ...
 [ ok ]
 * Unpacking data.tar.gz ...
 [ ok ]
>>> Source unpacked in /var/tmp/portage/dev-ruby/ruby-xslt-0.9.9-r3/work
>>> Preparing source in /var/tmp/portage/dev-ruby/ruby-xslt-0.9.9-r3/work ...
 * Running prepare phase for all ...
 * Running source copy phase for ruby22 ...
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/dev-ruby/ruby-xslt-0.9.9-r3/work ...
 * Running configure phase for ruby22 ...
checking for xmlParseDoc() in -lxml2... yes
checking for xsltParseStylesheetFile() in -lxslt... yes
checking for exsltRegisterAll() in -lexslt... yes
creating extconf.h
creating Makefile
>>> Source configured.
>>> Compiling source in /var/tmp/portage/dev-ruby/ruby-xslt-0.9.9-r3/work ...
 * Running compile phase for ruby22 ...
make -j1 -C ext/xslt_lib V=1 
make: Entering directory '/var/tmp/portage/dev-ruby/ruby-xslt-0.9.9-r3/work/ruby22/ruby-xslt-0.9.9/ext/xslt_lib'
x86_64-pc-linux-gnu-gcc -I. -I/usr/include/ruby-2.2.0/x86_64-linux -I/usr/include/ruby-2.2.0/ruby/backward -I/usr/include/ruby-2.2.0 -I. -DRUBY_EXTCONF_H=\"extconf.h\"    -fPIC -Wall -I/usr/include/libxml2 -I/usr/include/libxml2 -O2 -pipe -march=native -Wall -fno-strict-aliasing -fPIC -DUSE_ERROR_HANDLER -DUSE_EXSLT  -o xslt_lib.o -c xslt_lib.c
In file included from /usr/include/ruby-2.2.0/ruby/ruby.h:1725:0,
                 from /usr/include/ruby-2.2.0/ruby.h:33,
                 from xslt.h:42,
                 from xslt_lib.c:19:
xslt_lib.c: In function ‘Init_xslt_lib’:
xslt_lib.c:564:71: error: ‘XSLT_NORM_SAXON_NAMESPACE’ undeclared (first use in this function)
 rb_define_const( cXSLT, "NAMESPACE_NORM_SAXON", rb_str_new2((char *)XSLT_NORM_S
                                                                     ^
/usr/include/ruby-2.2.0/ruby/intern.h:802:27: note: in definition of macro ‘rb_str_new_cstr’
     (__builtin_constant_p(str)) ?  \
                           ^
xslt_lib.c:564:51: note: in expansion of macro ‘rb_str_new2’
   rb_define_const( cXSLT, "NAMESPACE_NORM_SAXON", rb_str_new2((char *)XSLT_NORM
                                                   ^
xslt_lib.c:564:71: note: each undeclared identifier is reported only once for each function it appears in
 rb_define_const( cXSLT, "NAMESPACE_NORM_SAXON", rb_str_new2((char *)XSLT_NORM_S
                                                                     ^
/usr/include/ruby-2.2.0/ruby/intern.h:802:27: note: in definition of macro ‘rb_str_new_cstr’
     (__builtin_constant_p(str)) ?  \
                           ^
xslt_lib.c:564:51: note: in expansion of macro ‘rb_str_new2’
   rb_define_const( cXSLT, "NAMESPACE_NORM_SAXON", rb_str_new2((char *)XSLT_NORM
                                                   ^
make: *** [Makefile:238: xslt_lib.o] Error 1
make: Leaving directory '/var/tmp/portage/dev-ruby/ruby-xslt-0.9.9-r3/work/ruby22/ruby-xslt-0.9.9/ext/xslt_lib'
 * ERROR: dev-ruby/ruby-xslt-0.9.9-r3::gentoo failed (compile phase):
 *   emake failed
 * 
 * If you need support, post the output of `emerge --info '=dev-ruby/ruby-xslt-0.9.9-r3::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=dev-ruby/ruby-xslt-0.9.9-r3::gentoo'`.
 * The complete build log is located at '/var/log/portage/dev-ruby:ruby-xslt-0.9.9-r3:20170915-192630.log'.
 * For convenience, a symlink to the build log is located at '/var/tmp/portage/dev-ruby/ruby-xslt-0.9.9-r3/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/dev-ruby/ruby-xslt-0.9.9-r3/temp/environment'.
 * Working directory: '/var/tmp/portage/dev-ruby/ruby-xslt-0.9.9-r3/work/ruby22/ruby-xslt-0.9.9'
 * S: '/var/tmp/portage/dev-ruby/ruby-xslt-0.9.9-r3/work/ruby22/ruby-xslt-0.9.9'
!!! When you file a bug report, please include the following information:
GENTOO_VM=  CLASSPATH="" JAVA_HOME="/etc/java-config-2/current-system-vm"
JAVACFLAGS="" COMPILER=""
and of course, the output of emerge --info =ruby-xslt-0.9.9