The stemmer4r gem is fubar. Warning draft snippet...
```ruby
# gem install stemmer4r
Bulk updating Gem source index for: http://gems.rubyforge.org
Building native extensions. This could take a while...
ERROR: While executing gem ... (Gem::Installer::ExtensionBuildError)
ERROR: Failed to build gem native extension.
ruby extconf.rb install stemmer4r
Gem files will remain installed in /usr/lib/ruby/gems/1.8/gems/stemmer4r-0.6 for inspection.
Results logged to /usr/lib/ruby/gems/1.8/gems/stemmer4r-0.6/ext/stemmer4r/gem_make.out
1. Change path of Ruby executable
cd /usr/lib/ruby/gems/1.8/gems/stemmer4r-0.6/ext/stemmer4r/
vim extconf.rb
#!/usr/bin/ruby -w
to
#ruby -w
2. Compile libstemmer_c
cd /usr/lib/ruby/gems/1.8/gems/stemmer4r-0.6/ext/stemmer4r/libstemmer/
make
3. Compile stemmer4r
cd /usr/lib/ruby/gems/1.8/gems/stemmer4r-0.6/ext/stemmer4r/
Change path:
/usr/local/ruby/lib/ruby/1.8/i686-linux/
To:
/usr/lib/ruby/1.8/x86_64-linux/
Or wherever you have it installed
ruby extconf.rb
4. Build stemmer4r gem
gem build stemmer4r.gemspec
gem install stemmer4r-0.6.gem
Problems
gcc -shared -rdynamic -Wl,-export-dynamic -L"/usr/lib" -o stemmer4r.so stemmer4r.o libstemmer_c/libstemmer.o -lruby1.8 -lpthread -ldl -lcrypt -lm -lc
/usr/bin/ld: libstemmer_c/libstemmer.o(libstemmer.o): relocation R_X86_64_32 against a local symbol' can not be used when making a shared object; recompile with -fPIC
libstemmer_c/libstemmer.o: could not read symbols: Bad value
collect2: ld returned 1 exit status
make: *** [stemmer4r.so] Error 1
Add CFLAGS:
root@aktagon:/usr/lib/ruby/gems/1.8/gems/stemmer4r-0.6/ext/stemmer4r/libstemmer_c# make
include mkinc.mak
CFLAGS = -fPIC
libstemmer.o: $(snowball_sources:.c=.o)
$(AR) -cru $@ $^
```