Change cmake variable HIDAPI to avoid polluting the submodule

CMakeLists.txt

@@ -211,9 +211,9 @@ option(SYSTEM_YAMLCPP "Use yaml-cpp library from system" OFF)
 option(FORTIFY "Define -D_FORTIFY_SOURCE=2 to check for programming errors" OFF)
 
 if(MINGW AND (${CMAKE_CXX_COMPILER_VERSION} VERSION_LESS 5.3.0))
-    option(HIDAPI "Build with HID support" OFF)
+    option(SC_HIDAPI "Build with HID support" OFF)
 else()
-    option(HIDAPI "Build with HID support" ON)
+    option(SC_HIDAPI "Build with HID support" ON)
 endif()
 
 #############################################

README_WINDOWS.md

@@ -730,8 +730,8 @@ built in MinGW-based environments. Use VS, if you need WASAPI.
 
 ### HIDAPI
 
-Currently HIDAPI is disabled by default for MinGW builds using MinGW/GCC 
-versions below 5.3. It can be enabled easily though: 
+Currently HIDAPI is disabled by default for MinGW builds using MinGW/GCC
+versions below 5.3. It can be enabled easily though:
 
 - Go to `SC-source/external-libraries/hidapi/hidapi_parser/hidapi_parser.c`.
 
@@ -755,10 +755,10 @@ Uncomment:
 
 Rerun the cmake configuration step and add the argument:
 
-    -D HIDAPI=ON
+    -D SC_HIDAPI=ON
 
 Now you can go on with the build, and it should succeed.
-    
+
 
 Walkthroughs
 ------------
@@ -824,7 +824,7 @@ you going:
 
    pacman -S mingw-w64-{x86_64,i686}-portaudio mingw-w64-{i686,x86_64}-libsndfile mingw-w64-{i686,x86_64}-fftw
 
-6. If you plan to build SuperNova, the sound server alternative that supports multiple processor-cores, install 
+6. If you plan to build SuperNova, the sound server alternative that supports multiple processor-cores, install
    `dlfcn` (mingw-w64-x86_64-dlfcn) (Google is your friend). 64-bit SuperNova on Windows is almost yours!
 
 If you are really lazy but read to the end before starting, i.e. smart, here are all the packages in a single go:

external_libraries/CMakeLists.txt

@@ -119,7 +119,7 @@ endif()
 set( EXAMPLE_TEST OFF )
 set( EXAMPLE_OSC OFF )
 
-if(HIDAPI)
+if(SC_HIDAPI)
     add_subdirectory(hidapi)
 		message(STATUS "Building with HID support")
 else()

lang/CMakeLists.txt

@@ -218,7 +218,7 @@ if(FALSE) # libsclang is a shared library
   target_compile_definitions(libsclang INTERFACE BUILDING_SCLANG)
 endif()
 
-if(HIDAPI)
+if(SC_HIDAPI)
   target_compile_definitions(libsclang PRIVATE HAVE_HIDAPI)
   target_link_libraries( libsclang hidapi hidapi_parser )
 endif()
@@ -297,8 +297,10 @@ if (FFTW3F_FOUND)
 	target_link_libraries(libsclang ${FFTW3F_LIBRARY})
 endif()
 
-if (WIN32)
+if (WIN32 AND SC_HIDAPI)
 	target_link_libraries(libsclang wsock32 ws2_32 portmidi iphlpapi hid)
+elseif(WIN32)
+	target_link_libraries(libsclang wsock32 ws2_32 portmidi iphlpapi)
 endif()
 
 if (GC_SANITYCHECK)