Chef gem install rugged 0.27.0 failure

gistfile1.txt

[root@cca47713 g1]# /opt/chef/embedded/bin/gem install /root/g1/rugged-0.27.0.gem -q --no-rdoc --no-ri

checking for pkg-config... yes
 -- cmake .. -DBUILD_CLAR=OFF -DTHREADSAFE=ON -DBUILD_SHARED_LIBS=OFF -DCMAKE_C_FLAGS=-fPIC -DCMAKE_BUILD_TYPE=RelWithDebInfo
*** 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
	--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=/opt/chef/embedded/bin/$(RUBY_BASE_NAME)
	--with-sha1dc
	--without-sha1dc
	--use-system-libraries
extconf.rb:21:in `sys': ERROR: 'cmake .. -DBUILD_CLAR=OFF -DTHREADSAFE=ON -DBUILD_SHARED_LIBS=OFF -DCMAKE_C_FLAGS=-fPIC -DCMAKE_BUILD_TYPE=RelWithDebInfo  ' failed (RuntimeError)
	from extconf.rb:83:in `block (2 levels) in <main>'
	from extconf.rb:80:in `chdir'
	from extconf.rb:80:in `block in <main>'
	from extconf.rb:77:in `chdir'
	from extconf.rb:77:in `<main>'

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

  /opt/chef/embedded/lib/ruby/gems/2.4.0/extensions/x86_64-linux/2.4.0/rugged-0.27.0/mkmf.log



/opt/chef/embedded/lib/ruby/gems/2.4.0/extensions/x86_64-linux/2.4.0/rugged-0.27.0/mkmf.log:
...
...
"cmake .. -DBUILD_CLAR=OFF -DTHREADSAFE=ON -DBUILD_SHARED_LIBS=OFF -DCMAKE_C_FLAGS=-fPIC -DCMAKE_BUILD_TYPE=RelWithDebInfo  "
-- The C compiler identification is GNU 4.8.5
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
...
...
...
-- Could NOT find OpenSSL, try to set the path to OpenSSL root folder in the system variable OPENSSL_ROOT_DIR (missing:  OPENSSL_LIBRARIES OPENSSL_INCLUDE_DIR)
CMake Error at src/CMakeLists.txt:180 (MESSAGE):
  Asked for OpenSSL TLS backend, but it wasn't found