Colorls Installtion is not working for Ubuntu 20.04.1 LTS

[Yatharth0045]

Description

Following the installation steps as provided but shows error in installing colorls in Ubuntu 20.04.1 LTS

Steps to recreate

Install Ruby Packages

sudo apt install ruby ruby-dev ruby-colorize

Install colorls

sudo gem install colorls

Error

Building native extensions. This could take a while...
ERROR:  Error installing colorls:
	ERROR: Failed to build gem native extension.

    current directory: /var/lib/gems/2.7.0/gems/clocale-0.0.4/ext/clocale
/usr/bin/ruby2.7 -I /usr/lib/ruby/2.7.0 -r ./siteconf20210112-88249-1y1omim.rb extconf.rb
checking for locale.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/$(RUBY_BASE_NAME)2.7
	--with-locale-dir
	--without-locale-dir
	--with-locale-include
	--without-locale-include=${locale-dir}/include
	--with-locale-lib
	--without-locale-lib=${locale-dir}/lib
/usr/lib/ruby/2.7.0/mkmf.rb:471:in `try_do': The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.
	from /usr/lib/ruby/2.7.0/mkmf.rb:613:in `try_cpp'
	from /usr/lib/ruby/2.7.0/mkmf.rb:1124:in `block in have_header'
	from /usr/lib/ruby/2.7.0/mkmf.rb:971:in `block in checking_for'
	from /usr/lib/ruby/2.7.0/mkmf.rb:361:in `block (2 levels) in postpone'
	from /usr/lib/ruby/2.7.0/mkmf.rb:331:in `open'
	from /usr/lib/ruby/2.7.0/mkmf.rb:361:in `block in postpone'
	from /usr/lib/ruby/2.7.0/mkmf.rb:331:in `open'
	from /usr/lib/ruby/2.7.0/mkmf.rb:357:in `postpone'
	from /usr/lib/ruby/2.7.0/mkmf.rb:970:in `checking_for'
	from /usr/lib/ruby/2.7.0/mkmf.rb:1123:in `have_header'
	from extconf.rb:9:in `<main>'

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

  /var/lib/gems/2.7.0/extensions/x86_64-linux/2.7.0/clocale-0.0.4/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in /var/lib/gems/2.7.0/gems/clocale-0.0.4 for inspection.
Results logged to /var/lib/gems/2.7.0/extensions/x86_64-linux/2.7.0/clocale-0.0.4/gem_make.out

• Type of issue :
  • Installation
  • Font-related
  • Feature request
  • Bug in existing feature
  • Developer mode : Code quality / Tests / Documentation

[avdv]

Have a look at this file: /var/lib/gems/2.7.0/extensions/x86_64-linux/2.7.0/clocale-0.0.4/mkmf.log

What does it say?

[Yatharth0045]

@avdv Here

"gcc -o conftest -I/usr/include/x86_64-linux-gnu/ruby-2.7.0 -I/usr/include/ruby-2.7.0/ruby/backward -I/usr/include/ruby-2.7.0 -I. -Wdate-time -D_FORTIFY_SOURCE=2   -g -O2 -fdebug-prefix-map=/build/ruby2.7-W7xcA4/ruby2.7-2.7.0=. -fstack-protector-strong -Wformat -Werror=format-security -fPIC conftest.c  -L. -L/usr/lib/x86_64-linux-gnu -L. -Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,-z,now -fstack-protector-strong -rdynamic -Wl,-export-dynamic     -lruby-2.7  -lm   -lc"
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: int main(int argc, char **argv)
4: {
5:   return !!argv[argc];
6: }
/* end */

[avdv]

Isn't there some more context? Do you have a C compiler installed?

[Yatharth0045]

Thanks @avdv , gcc was not available at first. Now, it worked.

Solution:

sudo apt install gcc make

[Yatharth0045]

Good to be closed now.
Thanks for the help @avdv