Can't install ffi on windows 7

[bmccab...@gmail.com]

Hi,

I can't install ffi. I get this error:

H:\Automated tests\gems>gem install ffi-1.9.0.gem

Temporarily enhancing PATH to include DevKit...

Building native extensions.  This could take a while...

ERROR:  Error installing ffi-1.9.0.gem:

        ERROR: Failed to build gem native extension.

        C:/Ruby193/bin/ruby.exe extconf.rb

checking for ffi.h... no

checking for ffi.h in /usr/local/include,/usr/include/ffi... no

checking for rb_thread_blocking_region()... yes

checking for rb_thread_call_with_gvl()... yes

checking for rb_thread_call_without_gvl()... yes

checking for ffi_prep_cif_var()... no

creating extconf.h

creating Makefile

make

generating ffi_c-i386-mingw32.def

Configuring libffi

configure: error: in `/c/Ruby193/lib/ruby/gems/1.9.1/gems/ffi-1.9.0/ext/ffi_c/libffi-i386-mingw32':

configure: error: cannot run C compiled programs.

If you meant to cross compile, use `--host'.

See `config.log' for more details

make: *** ["/c/Ruby193/lib/ruby/gems/1.9.1/gems/ffi-1.9.0/ext/ffi_c/libffi-i386-mingw32"/.libs/libffi_convenience.a] Error 1

Gem files will remain installed in C:/Ruby193/lib/ruby/gems/1.9.1/gems/ffi-1.9.0 for inspection.

Results logged to C:/Ruby193/lib/ruby/gems/1.9.1/gems/ffi-1.9.0/ext/ffi_c/gem_make.out

I'm surprised to be in this state because I had everything working yesterday.

I am running Windows 7 64-bit

Ruby 1.9.3p5.4.5

I have DevKit installed under

C:/Ruby193/DevKit

As far as I was aware, DevKit is the only prerequisite.

I would like to use ffi 1.9.0, but can use a higher version if required.

I have attached the file config.log which appears to contain the errors from the install.

Note that I am behind a firewall; however I have the gems sitting in the install directory, and other gems have installed fine from there before.

I have ffi 1.9.8 installed already, but it is not recognised by Cucumber when I run it:

H:\PaCT stuff\pact>cucumber -p check

Could not find ffi (>= 1.0.11, ~> 1.0) amongst [activesupport-3.2.13, addressable-2.3.6, bigdecimal-1.1.0, builder-3.2.2, bundler-1.9.4, cap

ybara-2.2.1, childprocess-0.5.6, coderay-1.1.0, csv-mapper-0.5.1, cucumber-2.0.0, cucumber-core-1.1.3, data_magic-0.20, diff-lcs-1.2.5, fake

r-1.4.3, fastercsv-1.5.5, ffi-1.9.8-x64-mingw32, fig_newton-0.11, gherkin-2.12.2-x86-mingw32, gli-2.13.0, gmail-0.5.0, gmail_xoauth-0.4.1, i

18n-0.7.0, i18n-0.6.1, io-console-0.3, json-1.8.2, json-1.8.1, json2csv-0.0.4, json_pure-1.8.2, magic_encoding-0.0.2, mail-2.6.3, method_sou

rce-0.8.2, mime-types-2.2, mini_portile-0.6.0, minitest-5.4.2, multi_json-1.10.1, multi_test-0.1.2, nokogiri-1.6.3.rc1-x86-mingw32, oauth-0.

4.7, page-object-1.0.3, page_navigation-0.9, pry-0.10.1, pry-doc-0.6.0, rack-1.5.2, rack-test-0.6.2, rake-10.4.2, rake-0.9.2.2, rautomation-

0.17.0, rdoc-3.9.5, require_all-1.3.2, rspec-3.0.0, rspec-core-3.0.0, rspec-expectations-3.0.0, rspec-mocks-3.0.0, rspec-support-3.0.0, ruby

gems-update-2.4.7, rubygems-update-2.2.2, rubyzip-1.1.4, selenium-webdriver-2.44.0, site_prism-2.6, slop-3.6.0, smarter_csv-1.0.19, syntax-1

.2.0, terminal-table-1.4.5, test-unit-2.5.5, thread_safe-0.3.4, time_diff-0.3.0, tzinfo-1.2.2, watir-webdriver-0.6.11, websocket-1.2.1, win3

2ole-pp-1.2.0, xpath-2.0.0, yard-0.8.7.6, yml_reader-0.4] (Gem::LoadError)

C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/dependency.rb:247:in `to_specs'

C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:778:in `block in activate_dependencies'

C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:767:in `each'

C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:767:in `activate_dependencies'

C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:751:in `activate'

C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:781:in `block in activate_dependencies'

C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:767:in `each'

C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:767:in `activate_dependencies'

C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:751:in `activate'

C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:781:in `block in activate_dependencies'

C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:767:in `each'

C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:767:in `activate_dependencies'

C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:751:in `activate'

C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems.rb:212:in `rescue in try_activate'

C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems.rb:209:in `try_activate'

C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:59:in `rescue in require'

C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:35:in `require'

H:/PaCT stuff/pact/features/support/env.rb:2:in `<top (required)>'

C:/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-2.0.0/lib/cucumber/rb_support/rb_language.rb:94:in `load'

C:/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-2.0.0/lib/cucumber/rb_support/rb_language.rb:94:in `load_code_file'

C:/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-2.0.0/lib/cucumber/runtime/support_code.rb:237:in `load_file'

C:/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-2.0.0/lib/cucumber/runtime/support_code.rb:97:in `block in load_files!'

C:/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-2.0.0/lib/cucumber/runtime/support_code.rb:96:in `each'

C:/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-2.0.0/lib/cucumber/runtime/support_code.rb:96:in `load_files!'

C:/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-2.0.0/lib/cucumber/runtime.rb:242:in `load_step_definitions'

C:/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-2.0.0/lib/cucumber/runtime.rb:65:in `run!'

C:/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-2.0.0/lib/cucumber/cli/main.rb:38:in `execute!'

C:/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-2.0.0/bin/cucumber:9:in `<top (required)>'

C:/Ruby193/bin/cucumber:23:in `load'

C:/Ruby193/bin/cucumber:23:in `<main>'

My current installed gem list:

*** LOCAL GEMS ***

activesupport (3.2.13)

addressable (2.3.6)

bigdecimal (1.1.0)

builder (3.2.2)

bundler (1.9.4)

capybara (2.2.1)

childprocess (0.5.6)

coderay (1.1.0)

csv-mapper (0.5.1)

cucumber (2.0.0)

cucumber-core (1.1.3)

data_magic (0.20)

diff-lcs (1.2.5)

faker (1.4.3)

fastercsv (1.5.5)

ffi (1.9.8 x64-mingw32)

fig_newton (0.11)

gherkin (2.12.2 x86-mingw32)

gli (2.13.0)

gmail (0.5.0)

gmail_xoauth (0.4.1)

i18n (0.7.0, 0.6.1)

io-console (0.3)

json (1.8.2, 1.8.1)

json2csv (0.0.4)

json_pure (1.8.2)

magic_encoding (0.0.2)

mail (2.6.3)

method_source (0.8.2)

mime-types (2.2)

mini_portile (0.6.0)

minitest (5.4.2)

multi_json (1.10.1)

multi_test (0.1.2)

nokogiri (1.6.3.rc1 x86-mingw32)

oauth (0.4.7)

page-object (1.0.3)

page_navigation (0.9)

pry (0.10.1)

pry-doc (0.6.0)

rack (1.5.2)

rack-test (0.6.2)

rake (10.4.2, 0.9.2.2)

rautomation (0.17.0)

rdoc (3.9.5)

require_all (1.3.2)

rspec (3.0.0)

rspec-core (3.0.0)

rspec-expectations (3.0.0)

rspec-mocks (3.0.0)

rspec-support (3.0.0)

rubygems-update (2.4.7, 2.2.2)

rubyzip (1.1.4)

selenium-webdriver (2.44.0)

site_prism (2.6)

slop (3.6.0)

smarter_csv (1.0.19)

syntax (1.2.0)

terminal-table (1.4.5)

test-unit (2.5.5)

thread_safe (0.3.4)

time_diff (0.3.0)

tzinfo (1.2.2)

watir-webdriver (0.6.11)

websocket (1.2.1)

win32ole-pp (1.2.0)

xpath (2.0.0)

yard (0.8.7.6)

yml_reader (0.4)

Thanks for any help.

[Daniel Berger]

I suspect you have a 32 vs 64 mismatch. There are separate devkits, one for 32-bit Ruby and one for 64-bit Ruby. Make sure you're using the right devkit when trying to install extensions.

Regards,

Dan