cannot install raakt/hpricot gem - ruby

Question

I'm absolutely a ruby beginner. I am trying to install raakt. This installation is failing - I think because of a dependency on another gem called hpricot. So I take a step back and try to install hpricot first:
install gem hpricot
Output as follows:
C:\Users\Administrator\source\repos\rss>gem install hpricot
Temporarily enhancing PATH for MSYS/MINGW...
Building native extensions. This could take a while...
ERROR: Error installing hpricot:
ERROR: Failed to build gem native extension.
current directory: C:/tools/ruby26/lib/ruby/gems/2.6.0/gems/hpricot-0.8.6/ex
t/fast_xs
C:/tools/ruby26/bin/ruby.exe -I C:/tools/ruby26/lib/ruby/2.6.0 -r ./siteconf2019
1204-7324-62if1j.rb extconf.rb
checking for stdio.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=C:/tools/ruby26/bin/$(RUBY_BASE_NAME)
C:/tools/ruby26/lib/ruby/2.6.0/mkmf.rb:467:in `try_do': The compiler failed to g
enerate an executable file. (RuntimeError)
You have to install development tools first.
from C:/tools/ruby26/lib/ruby/2.6.0/mkmf.rb:601:in `try_cpp'
from C:/tools/ruby26/lib/ruby/2.6.0/mkmf.rb:1109:in `block in have_heade
r'
from C:/tools/ruby26/lib/ruby/2.6.0/mkmf.rb:959:in `block in checking_fo
r'
from C:/tools/ruby26/lib/ruby/2.6.0/mkmf.rb:361:in `block (2 levels) in
postpone'
from C:/tools/ruby26/lib/ruby/2.6.0/mkmf.rb:331:in `open'
from C:/tools/ruby26/lib/ruby/2.6.0/mkmf.rb:361:in `block in postpone'
from C:/tools/ruby26/lib/ruby/2.6.0/mkmf.rb:331:in `open'
from C:/tools/ruby26/lib/ruby/2.6.0/mkmf.rb:357:in `postpone'
from C:/tools/ruby26/lib/ruby/2.6.0/mkmf.rb:958:in `checking_for'
from C:/tools/ruby26/lib/ruby/2.6.0/mkmf.rb:1108:in `have_header'
from extconf.rb:2:in `<main>'
To see why this extension failed to compile, please check the mkmf.log which can
be found here:
C:/tools/ruby26/lib/ruby/gems/2.6.0/extensions/x64-mingw32/2.6.0/hpricot-0.8.6
/mkmf.log
extconf failed, exit code 1
Gem files will remain installed in C:/tools/ruby26/lib/ruby/gems/2.6.0/gems/hpri
cot-0.8.6 for inspection.
Results logged to C:/tools/ruby26/lib/ruby/gems/2.6.0/extensions/x64-mingw32/2.6
.0/hpricot-0.8.6/gem_make.out
C:\Users\Administrator\source\repos\rss>
gem_make.out log:
current directory: C:/tools/ruby26/lib/ruby/gems/2.6.0/gems/hpricot-0.8.6/ext/fast_xs
C:/tools/ruby26/bin/ruby.exe -I C:/tools/ruby26/lib/ruby/2.6.0 -r ./siteconf20191204-2592-obt2lm.rb extconf.rb
checking for stdio.h... *** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers. Check the mkmf.log file for more details. You may
need configuration options.
Provided configuration options:
--with-opt-dir
--without-opt-dir
--with-opt-include
--without-opt-include=${opt-dir}/include
--with-opt-lib
--without-opt-lib=${opt-dir}/lib
--with-make-prog
--without-make-prog
--srcdir=.
--curdir
--ruby=C:/tools/ruby26/bin/$(RUBY_BASE_NAME)
C:/tools/ruby26/lib/ruby/2.6.0/mkmf.rb:467:in `try_do': The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.
from C:/tools/ruby26/lib/ruby/2.6.0/mkmf.rb:601:in `try_cpp'
from C:/tools/ruby26/lib/ruby/2.6.0/mkmf.rb:1109:in `block in have_header'
from C:/tools/ruby26/lib/ruby/2.6.0/mkmf.rb:959:in `block in checking_for'
from C:/tools/ruby26/lib/ruby/2.6.0/mkmf.rb:361:in `block (2 levels) in postpone'
from C:/tools/ruby26/lib/ruby/2.6.0/mkmf.rb:331:in `open'
from C:/tools/ruby26/lib/ruby/2.6.0/mkmf.rb:361:in `block in postpone'
from C:/tools/ruby26/lib/ruby/2.6.0/mkmf.rb:331:in `open'
from C:/tools/ruby26/lib/ruby/2.6.0/mkmf.rb:357:in `postpone'
from C:/tools/ruby26/lib/ruby/2.6.0/mkmf.rb:958:in `checking_for'
from C:/tools/ruby26/lib/ruby/2.6.0/mkmf.rb:1108:in `have_header'
from extconf.rb:2:in `<main>'
To see why this extension failed to compile, please check the mkmf.log which can be found here:
C:/tools/ruby26/lib/ruby/gems/2.6.0/extensions/x64-mingw32/2.6.0/hpricot-0.8.6/mkmf.log
extconf failed, exit code 1
Can anyone suggest a way I can get this installed or have some trouble-shooting tips?
Log looks like this:
"x86_64-w64-mingw32-gcc -o conftest.exe -IC:/tools/ruby26/include/ruby-2.6.0/x64-mingw32 -IC:/tools/ruby26/include/ruby-2.6.0/ruby/backward -IC:/tools/ruby26/include/ruby-2.6.0 -I. -D__USE_MINGW_ANSI_STDIO=1 -DFD_SETSIZE=2048 -D_WIN32_WINNT=0x0600 -D__MINGW_USE_VC2005_COMPAT -D_FILE_OFFSET_BITS=64 -O3 -fno-fast-math conftest.c -L. -LC:/tools/ruby26/lib -L. -pipe -s -lx64-msvcrt-ruby260 -lshell32 -lws2_32 -liphlpapi -limagehlp -lshlwapi "
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: #include <winsock2.h>
4: #include <windows.h>
5: int main(int argc, char **argv)
6: {
7: return 0;
8: }
/* end */
Full gemfile
source 'http://rubygems.org'
gem 'rake', '10.5.0'
gem 'albacore', '2.3.22'
gem 'business_time', '0.8.0'
gem 'nokogiri'
gem 'octokit', '4.3.0'
#gem 'hpricot'
#gem 'raakt'