Unable to install libvigo ?

[sunnyEV]

HI, I'll be using Vg, unable to install libvigo. showing error ?
I do installed latest version of HTSLIB and setup an environment variable as well. Suggestions please!
Using cmake version 3.16.3. Find the attached cmake log file.
CMakeOutput.log

./install.sh
Library will be installed in '/home/cent'
-- The CXX compiler identification is GNU 9.3.0
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found OpenMP_CXX: -fopenmp (found version "4.5")
-- Found OpenMP: TRUE (found version "4.5")
-- Found PkgConfig: /usr/bin/pkg-config (found version "0.29.1")
-- [ /usr/share/cmake-3.16/Modules/FindProtobuf.cmake:321 ] Protobuf_USE_STATIC_LIBS = OFF
-- [ /usr/share/cmake-3.16/Modules/FindProtobuf.cmake:455 ] requested version of Google Protobuf is
-- [ /usr/share/cmake-3.16/Modules/FindProtobuf.cmake:463 ] location of common.h: /usr/include/google/protobuf/stubs/common.h
-- [ /usr/share/cmake-3.16/Modules/FindProtobuf.cmake:481 ] /usr/include/google/protobuf/stubs/common.h reveals protobuf 3.6.1
-- [ /usr/share/cmake-3.16/Modules/FindProtobuf.cmake:494 ] /usr/bin/protoc reveals version 3.6.1
-- Found Protobuf: /usr/lib/x86_64-linux-gnu/libprotobuf.so (found version "3.6.1")
Protobuf will be /usr/lib/x86_64-linux-gnu/libprotobuf.so for PIC dynamic code and /usr/lib/x86_64-linux-gnu/libprotobuf.a for non-PIC static code
-- Found Threads: TRUE
-- Checking for module 'htslib'
-- No package 'htslib' found
CMake Error at /usr/share/cmake-3.16/Modules/FindPkgConfig.cmake:463 (message):
A required package was not found
Call Stack (most recent call first):
/usr/share/cmake-3.16/Modules/FindPkgConfig.cmake:643 (_pkg_check_modules_internal)
CMakeLists.txt:76 (pkg_check_modules)

-- Configuring incomplete, errors occurred!
See also "/home/cent/Documents/pantran/vg-v1.26.0/libvgio-master/build/CMakeFiles/CMakeOutput.log".
ERROR: CMake build failed.