Added back the original MINGW branch on `findlibusb` (but removed MSVC sub-branch)

cmake/modules/Findlibusb.cmake

@@ -88,6 +88,64 @@ elseif (MSVC)      # Native Windows MSVC
         set(LIBUSB_LIBRARY ${LIBUSB_NAME})
         mark_as_advanced(LIBUSB_FOUND LIBUSB_INCLUDE_DIR LIBUSB_LIBRARY)
     endif()
+elseif (WIN32 OR (MINGW AND EXISTS "/etc/debian_version"))      # Windows OR cross-build with MinGW-toolchain on Debian
+    # MinGW: 64-bit or 32-bit?
+    if (CMAKE_SIZEOF_VOID_P EQUAL 8)
+        message(STATUS "=== Building for Windows (x86-64) ===")
+        set(ARCH 64)
+    else ()
+        message(STATUS "=== Building for Windows (i686) ===")
+        set(ARCH 32)
+    endif()
+
+    if (NOT LIBUSB_FOUND)
+        # Preparations for installing libusb library
+        set(LIBUSB_WIN_VERSION 1.0.27) # set libusb version
+        set(LIBUSB_WIN_ARCHIVE_PATH ${CMAKE_SOURCE_DIR}/3rdparty/libusb-${LIBUSB_WIN_VERSION}.7z)
+        set(LIBUSB_WIN_OUTPUT_FOLDER ${CMAKE_SOURCE_DIR}/3rdparty/libusb-${LIBUSB_WIN_VERSION})
+
+        # Get libusb package
+        if (EXISTS ${LIBUSB_WIN_ARCHIVE_PATH})  # ... should the package be already there
+            message(STATUS "libusb archive already in build folder")
+        else ()                                 # ... download the package
+            message(STATUS "downloading libusb ${LIBUSB_WIN_VERSION}")
+            file(DOWNLOAD
+                    https://sourceforge.net/projects/libusb/files/libusb-1.0/libusb-${LIBUSB_WIN_VERSION}/libusb-${LIBUSB_WIN_VERSION}.7z/download
+                    ${LIBUSB_WIN_ARCHIVE_PATH} EXPECTED_MD5 c72153fc5a32f3b942427b0671897a1a
+            )
+        endif()
+
+        file(MAKE_DIRECTORY ${LIBUSB_WIN_OUTPUT_FOLDER})
+
+        # Extract libusb package with cmake
+        execute_process(
+                COMMAND ${CMAKE_COMMAND} -E tar xv ${LIBUSB_WIN_ARCHIVE_PATH}
+                WORKING_DIRECTORY ${LIBUSB_WIN_OUTPUT_FOLDER}
+        )
+
+        # libusb header file
+        FIND_PATH(LIBUSB_INCLUDE_DIR
+                NAMES libusb.h
+                HINTS ${LIBUSB_WIN_OUTPUT_FOLDER}/include
+                PATH_SUFFIXES libusb-1.0
+                NO_DEFAULT_PATH
+                NO_CMAKE_FIND_ROOT_PATH
+        )
+
+
+        # libusb library (static)
+        set(LIBUSB_NAME libusb-1.0)
+        find_library(LIBUSB_LIBRARY
+                NAMES ${LIBUSB_NAME}
+                HINTS ${LIBUSB_WIN_OUTPUT_FOLDER}/MinGW${ARCH}/static
+                NO_DEFAULT_PATH
+                NO_CMAKE_FIND_ROOT_PATH
+        )
+    endif()
+
+    FIND_PACKAGE_HANDLE_STANDARD_ARGS(libusb DEFAULT_MSG LIBUSB_INCLUDE_DIR LIBUSB_LIBRARY)
+    mark_as_advanced(LIBUSB_INCLUDE_DIR LIBUSB_LIBRARY)
+    message(STATUS "Missing libusb library has been installed")
 else ()                                                         # all other OS (unix-based)
     # libusb header file
     FIND_PATH(LIBUSB_INCLUDE_DIR