added CMakeLists.txt for Win32 and a README

win32-qtcreator/CMakeLists.txt

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+project(rtlsdr)
+cmake_minimum_required(VERSION 2.8)
+
+# created and tested with
+# Qt 5.5.1 for Windows 32-bit (MinGW 4.9.2) from
+# https://www.qt.io/download-open-source/#section-2
+#
+# and QtCreator 4.0.0
+#
+# and LibUSB 1.0.20 from
+# https://sourceforge.net/projects/libusb/files/
+#   libusb-1.0.20.7z
+#
+
+# edit this path
+SET( LIBUSBBASE C:/src/_foreign/libusb-1.0.20 )
+
+
+add_definitions( -DWIN32 -D_WIN32 -DNDEBUG )
+
+include_directories(
+    ../include
+    ${LIBUSBBASE}/include/libusb-1.0
+)
+
+SET( LIBUSB ${LIBUSBBASE}/MinGW32/static/libusb-1.0.a )
+
+SET( SOCKLIBS ws2_32 wsock32 )
+
+SET( RTLLIBFILES
+    ../include/rtl_tcp.h
+    ../include/reg_field.h
+    ../include/rtlsdr_i2c.h
+
+    ../src/convenience/convenience.c
+    ../src/convenience/convenience.h
+
+    ../src/getopt/getopt.c
+    ../src/getopt/getopt.h
+
+    ../include/rtl-sdr_export.h
+    ../include/rtl-sdr.h
+    ../src/librtlsdr.c
+
+    ../include/tuner_e4k.h
+    ../src/tuner_e4k.c
+
+    ../include/tuner_fc0012.h
+    ../src/tuner_fc0012.c
+
+    ../include/tuner_fc0013.h
+    ../src/tuner_fc0013.c
+
+    ../include/tuner_fc2580.h
+    ../src/tuner_fc2580.c
+
+    ../include/tuner_r82xx.h
+    ../src/tuner_r82xx.c
+)
+
+add_executable( rtl_test ../src/rtl_test.c  ${RTLLIBFILES} )
+target_link_libraries( rtl_test ${LIBUSB} )
+
+add_executable( rtl_fm ../src/rtl_fm.c ${RTLLIBFILES} )
+target_link_libraries( rtl_fm ${LIBUSB} )
+
+add_executable( rtl_tcp ../src/rtl_tcp.c ${RTLLIBFILES} )
+target_link_libraries( rtl_tcp ${LIBUSB} ${SOCKLIBS} )
+
+add_executable( rtl_adsb ../src/rtl_adsb.c ${RTLLIBFILES} )
+target_link_libraries( rtl_adsb ${LIBUSB} )
+
+add_executable( rtl_power ../src/rtl_power.c ${RTLLIBFILES} )
+target_link_libraries( rtl_power ${LIBUSB} )
+

win32-qtcreator/README.txt

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+
+there is an outdated "How to compile new releases of librtlsdr (and tools) on Windows" at
+https://www.reddit.com/r/RTLSDR/comments/uce3e/how_to_compile_new_releases_of_librtlsdr_and/
+unfortunately the link to the CMakeLists.txt is broken!
+
+so, i needed to find another solution ..
+
+
+1) aquire and install Qt 5.5.x for Windows 32-bit (MinGW 4.9.2) from
+https://www.qt.io/download-open-source/#section-2
+
+2) aquire and install QtCreator 4.0.x
+from same site as 1)
+probably this step is not necessary and you can use the qtcreator IDE from 1)
+
+3) aquire LibUSB 1.0.20 from
+https://sourceforge.net/projects/libusb/files/
+last tested: libusb-1.0.20.7z
+
+and place the file at C:/src/_foreign/libusb-1.0.20
+
+or replace LIBUSBBASE path in CMakeLists.txt
+
+4) start qtcreator and open the (modified) CMakeLists.txt
+configure compiler/environment and compile
+
+
+the resulting executables have no other dependencies than libwinpthread-1.dll
+from the MINGW system at C:\Qt\Qt5.5.1\Tools\mingw492_32\bin\
+  or C:\Qt\Qt5.5.1\5.5\mingw492_32\bin
+