Termux-packages: Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

[SDRausty]

$ cd git/sdrausty/sdrausty.github.io/
$ ./script/
bootstrap cibuild release server
$ ./script/bootstrap
Successfully installed bundler-1.14.6
1 gem installed
Fetching gem metadata from https://rubygems.org/...........
Fetching version metadata from https://rubygems.org/..
Fetching dependency metadata from https://rubygems.org/.
Resolving dependencies...
Using public_suffix 2.0.5
Using colorator 1.1.0
Installing ffi 1.9.18 with native extensions
Using forwardable-extended 2.6.0
Using sass 3.4.23
Using rb-fsevent 0.9.8
Using kramdown 1.13.2
Using liquid 3.0.6
Using mercenary 0.3.6
Using rouge 1.11.1
Using safe_yaml 1.0.4
Using bundler 1.14.6
Using addressable 2.5.1
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

current directory:
/data/data/com.termux/files/usr/lib/ruby/gems/2.4.0/gems/ffi-1.9.18/ext/ffi_c
/data/data/com.termux/files/usr/bin/ruby -r ./siteconf20170427-30050-kaueq1.rb
extconf.rb
mkmf.rb can't find header files for ruby at
/data/data/com.termux/files/usr/lib/ruby/include/ruby.h

extconf failed, exit code 1

Gem files will remain installed in
/data/data/com.termux/files/usr/lib/ruby/gems/2.4.0/gems/ffi-1.9.18 for
inspection.
Results logged to
/data/data/com.termux/files/usr/lib/ruby/gems/2.4.0/extensions/arm-linux/2.4.0/ffi-1.9.18/gem_make.out

An error occurred while installing ffi (1.9.18), and Bundler cannot
continue.
Make sure that gem install ffi -v '1.9.18' succeeds before bundling.

[SDRausty]

$ cat ./script/bootstrap

!/data/data/com.termux/files/usr/bin/sh

set -e

gem install bundler
bundle install

[SDRausty]

$ l /data/data/com.termux/files/usr/lib/ruby/include/ruby.h
ls: cannot access '/data/data/com.termux/files/usr/lib/ruby/include/ruby.h': No such file or directory

[SDRausty]

Where is ruby.h? Does anyone know?

[vishalbiswas]

apt install ruby-dev libffi-dev
Termux uses packaging layout similar to Ubuntu, i.e. development related files in a separate package.

[SDRausty]

Been there'n'done dat, still no rubby.h on my device.

[SDRausty]

ruby/stable,now 2.4.1-1 arm [installed]
ruby-dev/stable,now 2.4.1-1 arm [installed]
ruby-ri/stable,now 2.4.1-1 all [installed]

Do you have ruby.h on device?

[SDRausty]

libffi/stable,now 3.2.1-2 arm [installed,automatic]
libffi-dev/stable,now 3.2.1-2 arm [installed]

[vishalbiswas]

Just noticed that the path is wrong. /data/data/com.termux/files/usr/lib/ruby/include/ruby.h

It should be /data/data/com.termux/files/usr/include/ruby-2.4.0/ruby.h
I can gem install ffi -v '1.9.18' just fine.

[vishalbiswas]

$ dpkg --search ruby.h ruby-dev: /data/data/com.termux/files/usr/include/ruby-2.4.0/ruby.h ruby-dev: /data/data/com.termux/files/usr/include/ruby-2.4.0/ruby/ruby.h

[SDRausty]

find -name ruby.h
./files/usr/include/ruby-2.4.0/ruby/ruby.h
./files/usr/include/ruby-2.4.0/ruby.h

But still:
An error occurred while installing ffi (1.9.18), and
Bundler cannot continue.
Make sure that gem install ffi -v '1.9.18' succeeds before
bundling.

[SDRausty]

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

current directory:
/data/data/com.termux/files/usr/lib/ruby/gems/2.4.0/gems/ffi-1.9.18/ext/ffi_c
/data/data/com.termux/files/usr/bin/ruby -r
./siteconf20170427-2798-ub4d47.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=/data/data/com.termux/files/usr/bin/$(RUBY_BASE_NAME)
--with-ffi_c-dir
--without-ffi_c-dir
--with-ffi_c-include
--without-ffi_c-include=${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
/data/data/com.termux/files/usr/lib/ruby/2.4.0/mkmf.rb:457:in
try_do': The compiler failed to generate an executable file. (RuntimeError) You have to install development tools first. from /data/data/com.termux/files/usr/lib/ruby/2.4.0/mkmf.rb:588:in try_cpp'
from /data/data/com.termux/files/usr/lib/ruby/2.4.0/mkmf.rb:1095:in
block in have_header' from /data/data/com.termux/files/usr/lib/ruby/2.4.0/mkmf.rb:945:in block in checking_for'
from /data/data/com.termux/files/usr/lib/ruby/2.4.0/mkmf.rb:351:in
block (2 levels) in postpone' from /data/data/com.termux/files/usr/lib/ruby/2.4.0/mkmf.rb:321:in open'
from /data/data/com.termux/files/usr/lib/ruby/2.4.0/mkmf.rb:351:in
block in postpone' from /data/data/com.termux/files/usr/lib/ruby/2.4.0/mkmf.rb:321:in open'
from /data/data/com.termux/files/usr/lib/ruby/2.4.0/mkmf.rb:347:in
postpone' from /data/data/com.termux/files/usr/lib/ruby/2.4.0/mkmf.rb:944:in checking_for'
from /data/data/com.termux/files/usr/lib/ruby/2.4.0/mkmf.rb:1094:in
have_header' from extconf.rb:16:in

'

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

/data/data/com.termux/files/usr/lib/ruby/gems/2.4.0/extensions/arm-linux/2.4.0/ffi-1.9.18/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in
/data/data/com.termux/files/usr/lib/ruby/gems/2.4.0/gems/ffi-1.9.18
for inspection.
Results logged to
/data/data/com.termux/files/usr/lib/ruby/gems/2.4.0/extensions/arm-linux/2.4.0/ffi-1.9.18/gem_make.out

An error occurred while installing ffi (1.9.18), and
Bundler cannot continue.
Make sure that gem install ffi -v '1.9.18' succeeds before
bundling.

[SDRausty]

ln -s /data/data/com.termux/files/usr/include/ruby-2.4.0/ruby.h /data/data/com.termux/files/usr/lib/ruby/include/ruby.h

Doesn't help either; Any suggestions?

[SDRausty]

$ gem install ffi -v '1.9.18'
Building native extensions. This could take a while...
ERROR: Error installing ffi:
ERROR: Failed to build gem native extension.

current directory: /data/data/com.termux/files/usr/lib/ruby/gems/2.4.0/gems/ffi-1.9.18/ext/ffi_c

/data/data/com.termux/files/usr/bin/ruby -r ./siteconf20170427-6745-19bahy2.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.

[SDRausty]

I revisited this issue, but on aarch64 not arm architecture as in the previous posts. Also this installation is fairly complete apt install * almost worked out of the box.

gem install bundler and the subsequent local build of website work on aarch64.

[jperrin]

I'm still seeing this bug when using an intel m3 powered chromebook. (asus c302ca flip)

[SDRausty]

There were two reasons why I closed this issue:

1. I switched architectures;
2. I was under the impression once gem install bundler works, that it would exclusively work locally. It doesn't. It contacts a website for rebuilds.

Please feal free to reopen this issue if you need to.

[ghost]

use sudo apt-get install ruby-dev

[Grimler91]

@vivekanand-pst That's a bad suggestion as using apt as root breaks stuff.

apt install ruby-dev works fine

[xeffyr]

@vivekanand-pst Also we don't have command sudo, but tsudo from tsu package.

[fagianijunior]

In my case, I enabled a SWAP file (in amazon server 1GB RAM) and this error does not show again.

$ sudo dd if=/dev/zero of=/swapfile bs=1M count=2000
$ sudo chmod 600 /swapfile
$ sudo mkswap /swapfile
$ sudo swapon /swapfile

test with:
$ swapon -s
$ free -h

reference to create swapfile.
https://aws.amazon.com/pt/premiumsupport/knowledge-center/ec2-memory-swap-file/