* Your CXXFLAGS contains "-fvisibility-inlines-hidden" which can break packages.
 * 
 * Before you file a bug, please remove these flags and 
 * re-compile the package in question as well as all its dependencies
>>> Unpacking source...
>>> Unpacking ruby-prof-0.7.3.tgz to /var/tmp/portage/dev-ruby/ruby-prof-0.7.3/work
>>> Source unpacked in /var/tmp/portage/dev-ruby/ruby-prof-0.7.3/work
>>> Compiling source in /var/tmp/portage/dev-ruby/ruby-prof-0.7.3/work/ruby-prof-0.7.3 ...
checking for sys/times.h... yes
checking for rb_os_allocated_objects()... no
checking for rb_gc_allocated_size()... no
checking for rb_gc_collections()... no
checking for rb_gc_time()... no
checking for rb_heap_total_mem()... no
checking for rb_gc_heap_info()... no
checking for rb_gc_malloc_allocations()... no
checking for rb_gc_malloc_allocated_size()... no
creating Makefile
make -j12 -s CC=x86_64-pc-linux-gnu-gcc CXX=x86_64-pc-linux-gnu-g++ 'DLDFLAGS=-Wl,-O1 -Wl,--as-needed -Wl,--hash-style=gnu -Wl,--sort-common' 
ruby_prof.c:867: error: expected declaration specifiers or ‘...’ before ‘NODE’
ruby_prof.c: In function ‘prof_event_hook’:
ruby_prof.c:1114: error: ‘node’ undeclared (first use in this function)
ruby_prof.c:1114: error: (Each undeclared identifier is reported only once
ruby_prof.c:1114: error: for each function it appears in.)
ruby_prof.c:1114: error: too many arguments to function ‘get_method’
ruby_prof.c:1120: warning: passing argument 5 of ‘get_method’ makes pointer from integer without a cast
ruby_prof.c:867: note: expected ‘struct st_table *’ but argument is of type ‘int’
ruby_prof.c:1120: error: too many arguments to function ‘get_method’
make: *** [ruby_prof.o] Error 1
 * ERROR: dev-ruby/ruby-prof-0.7.3 failed:
 *   emake for ruby failed
 * 
 * Call stack:
 *     ebuild.sh, line   49:  Called src_compile
 *   environment, line 2585:  Called ruby_emake
 *   environment, line 2506:  Called die
 * The specific snippet of code:
 *           emake CC="$(tc-getCC)" CXX="$(tc-getCXX)" DLDFLAGS="${LDFLAGS}" "$@" || die "emake for ruby failed";
 * 
 * If you need support, post the output of 'emerge --info =dev-ruby/ruby-prof-0.7.3',
 * the complete build log and the output of 'emerge -pqv =dev-ruby/ruby-prof-0.7.3'.
 * The complete build log is located at '/var/log/portage/dev-ruby:ruby-prof-0.7.3:20091107-001302.log'.
 * The ebuild environment file is located at '/var/tmp/portage/dev-ruby/ruby-prof-0.7.3/temp/environment'.
 * S: '/var/tmp/portage/dev-ruby/ruby-prof-0.7.3/work/ruby-prof-0.7.3'