CMake install not working in Visual Studio Code - visual-studio-code

Question

I'm trying to generate a static library and install it using Cmake and Visual Studio Code, but the files are not installed where I want to.
The folder structure is as follows:
Main_Folder
- Poly
- - CMakeLists.txt
- - src
- - - Poly.cpp
- - - Poly.h
- Test
- - TestLibs
- - - TestLibs.cpp
- - - TestLibs.h
This is my CMakeLists.txt:
cmake_minimum_required(VERSION 3.0.0)
project(poly)
set(CMAKE_BUILD_TYPE Debug)
#Bring the headers, such as Student.h into the project
include_directories(${CMAKE_CURRENT_SOURCE_DIR}/src)
file(GLOB SOURCES "${CMAKE_CURRENT_SOURCE_DIR}/src/*")
#Generate the static library from the sources
add_library(poly STATIC ${SOURCES})
#Set the location for library installation
install(
TARGETS poly
LIBRARY DESTINATION /Main_Folder/Test/TestLibs/Poly
ARCHIVE DESTINATION /Main_Folder/Test/TestLibs/Poly
RUNTIME DESTINATION /Main_Folder/Test/TestLibs/Poly
)
And this is my cmake_install.cmake:
# Install script for directory: Main_Folder/Poly
# Set the install prefix
if(NOT DEFINED CMAKE_INSTALL_PREFIX)
set(CMAKE_INSTALL_PREFIX "/usr/local")
endif()
string(REGEX REPLACE "/$" "" CMAKE_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}")
# Set the install configuration name.
if(NOT DEFINED CMAKE_INSTALL_CONFIG_NAME)
if(BUILD_TYPE)
string(REGEX REPLACE "^[^A-Za-z0-9_]+" "" CMAKE_INSTALL_CONFIG_NAME "${BUILD_TYPE}")
else()
set(CMAKE_INSTALL_CONFIG_NAME "Debug")
endif()
message(STATUS "Install configuration: \"${CMAKE_INSTALL_CONFIG_NAME}\"")
endif()
# Set the component getting installed.
if(NOT CMAKE_INSTALL_COMPONENT)
if(COMPONENT)
message(STATUS "Install component: \"${COMPONENT}\"")
set(CMAKE_INSTALL_COMPONENT "${COMPONENT}")
else()
set(CMAKE_INSTALL_COMPONENT)
endif()
endif()
# Install shared libraries without execute permission?
if(NOT DEFINED CMAKE_INSTALL_SO_NO_EXE)
set(CMAKE_INSTALL_SO_NO_EXE "0")
endif()
# Is this installation the result of a crosscompile?
if(NOT DEFINED CMAKE_CROSSCOMPILING)
set(CMAKE_CROSSCOMPILING "FALSE")
endif()
if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
list(APPEND CMAKE_ABSOLUTE_DESTINATION_FILES "/Main_Folder/Test/TestLibs/Poly/libpoly.a")
if(CMAKE_WARN_ON_ABSOLUTE_INSTALL_DESTINATION)
message(WARNING "ABSOLUTE path INSTALL DESTINATION : ${CMAKE_ABSOLUTE_DESTINATION_FILES}")
endif()
if(CMAKE_ERROR_ON_ABSOLUTE_INSTALL_DESTINATION)
message(FATAL_ERROR "ABSOLUTE path INSTALL DESTINATION forbidden (by caller): ${CMAKE_ABSOLUTE_DESTINATION_FILES}")
endif()
file(INSTALL DESTINATION "/Main_Folder/Test/TestLibs/Poly/" TYPE STATIC_LIBRARY FILES "/home/myUser/git/Main_Folder/Test/TestLibs/Poly/libpoly.a")
endif()
The library (libpoly.a) is created, but instead of being installed in /Main_Folder/Test/TestLibs/Poly is found on /Main_Folder/Poly and I dont understand what I'm missing.
I'm using Linux and cmake 3.17.3, I don't know if this might cause the issue.