gem install fails: ERROR: Failed to build gem native extension

[Blockost]

Hi guys,

Travis CLI does not seem to be willing to install on my machine (I'm using this docker image as my container).

root@ff8ac5453dbc:~# gem install travis
Building native extensions. This could take a while...
ERROR:  Error installing travis:
        ERROR: Failed to build gem native extension.

    current directory: /var/lib/gems/2.3.0/gems/ffi-1.9.18/ext/ffi_c
/usr/bin/ruby2.3 -r ./siteconf20171120-16712-g2o2td.rb extconf.rb
checking for ffi.h... *** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.

Provided configuration options:
        --with-opt-dir
        --without-opt-dir
        --with-opt-include
        --without-opt-include=${opt-dir}/include
        --with-opt-lib
        --without-opt-lib=${opt-dir}/lib
        --with-make-prog
        --without-make-prog
        --srcdir=.
        --curdir
        --ruby=/usr/bin/$(RUBY_BASE_NAME)2.3
        --with-ffi_c-dir
        --without-ffi_c-dir
        --with-ffi_c-include
        --without-ffi_c-include=${ffi_c-dir}/include
        --with-ffi_c-lib
        --without-ffi_c-lib=${ffi_c-dir}/lib
        --with-libffi-config
        --without-libffi-config
        --with-pkg-config
        --without-pkg-config
/usr/lib/ruby/2.3.0/mkmf.rb:456:in `try_do': The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.
        from /usr/lib/ruby/2.3.0/mkmf.rb:587:in `try_cpp'
        from /usr/lib/ruby/2.3.0/mkmf.rb:1091:in `block in have_header'
        from /usr/lib/ruby/2.3.0/mkmf.rb:942:in `block in checking_for'
        from /usr/lib/ruby/2.3.0/mkmf.rb:350:in `block (2 levels) in postpone'
        from /usr/lib/ruby/2.3.0/mkmf.rb:320:in `open'
        from /usr/lib/ruby/2.3.0/mkmf.rb:350:in `block in postpone'
        from /usr/lib/ruby/2.3.0/mkmf.rb:320:in `open'
        from /usr/lib/ruby/2.3.0/mkmf.rb:346:in `postpone'
        from /usr/lib/ruby/2.3.0/mkmf.rb:941:in `checking_for'
        from /usr/lib/ruby/2.3.0/mkmf.rb:1090:in `have_header'
        from extconf.rb:16:in `<main>'

To see why this extension failed to compile, please check the mkmf.log which can be found here:

  /var/lib/gems/2.3.0/extensions/x86_64-linux/2.3.0/ffi-1.9.18/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in /var/lib/gems/2.3.0/gems/ffi-1.9.18 for inspection.
Results logged to /var/lib/gems/2.3.0/extensions/x86_64-linux/2.3.0/ffi-1.9.18/gem_make.out

I'm using Gem 2.7.2 and ruby 2.3.3

root@ff8ac5453dbc:~# gem -v
2.7.2

root@ff8ac5453dbc:~# ruby -v
ruby 2.3.3p222 (2016-11-21) [x86_64-linux-gnu]

Also, ruby dev kit is already installed:

root@ff8ac5453dbc:~#  apt-get install ruby-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
ruby-dev is already the newest version (1:2.3.3).
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.

Has anyone encoutered the same problem ? I need Travis CLI to encrypt my api_key for deployment.

Thanks,
Simon.

[dante-signal31]

I had the same problem than you. I was in a clean Ubuntu box.

In the end I was able to build travis-cli after installing these dependencies:

• ruby-dev
• gcc
• libffi-dev
• make

Regards,

Dante

[rob137]

Dante,

I'm in the same fix - just tried installing those dependencies. I downloaded make without any problems, but 'sudo gem install [dependency]' didn't work for ruby-dev, gcc or libffi-dev:
ERROR: Could not find a valid gem '[dependency]' (>= 0) in any repository

Any idea what I'm doing wrong?

[dante-signal31]

What is happenning is that those are system dependencies not Ruby dependencies.

Try to install them using your system package manager (apt-get in debian).

By the way, be aware that I gave you the names those packages have in Ubuntu, they may have different names in other distributions.

[michael-pratt]

I was having this issue on MacOS Mojave. Installing latest ruby via Homebrew and setting some env variables solved it for me:

export PATH="/usr/local/opt/ruby/bin:$PATH"
export LDFLAGS="-L/usr/local/opt/ruby/lib"
export CPPFLAGS="-I/usr/local/opt/ruby/include"
export PKG_CONFIG_PATH="/usr/local/opt/ruby/lib/pkgconfig"

[nelson6e65]

In Fedora (29, x64), I had to install all dev tools:

sudo dnf install @development-tools
sudo dnf install @rpm-development-tools # missing

[BanzaiMan]

Closing in favor of #758. It no longer depends on native extensions, so the installation should be easier. If the issue persists, feel free to open a new one.

[iadeelzafar]

I was having the same issue today when installing fastlane. Fixed it by following @dante-signal31 's advice. Additonally, I also had to add sudo apt-get install build-essential g++

[JaminZhou]

If you are using a mac, you can try it.

1. sudo rm -rf /Library/Developer/CommandLineTools
2. xcode-select --install
3. sudo xcodebuild -license accept
4. open /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg

[ferreroxc]

I had the same problem than you. I was in a clean Ubuntu box.

In the end I was able to build travis-cli after installing these dependencies:

• ruby-dev
• gcc
• libffi-dev
• make

Regards,

Dante

Thanks!! And also need g++ in my case.

[Prasad-03]

I am facing same problem for windows10, can anybody got solution for windows.
My ruby version is 3.0.3p157 and rails is 6.1.4.1.
I upgrade my ruby version from 2.6.9 to latest one and try to bundle install and got this error.

[tqmMohit]

If you are using a mac, you can try it.

1. sudo rm -rf /Library/Developer/CommandLineTools
2. xcode-select --install
3. sudo xcodebuild -license accept
4. open /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg

Works for me thanks.

[vuboi]

sudo apt-get install build-essential g++

+1 worked for me thanks

perfect. thank you

[yoyo115956]

I was having the same issue today when installing fastlane. Fixed it by following @dante-signal31 's advice. Additonally, I also had to add sudo apt-get install build-essential g++

This really helped me, I switched from windows to Ubuntu on wsl, and your solution effectively solved my problem, thanks a lot!