restore gtest win32 patch (stripped during gtest rebase)

enable lokinet shared library on win32

TODO: define an API to expose from this library
currently, it resorts to exporting *everything*
including system implementation details that otherwise
should remain hidden out of sight
(i.e. the winsock2 load stubs for new socket API, or entire libstdc++ classes!)

CMakeLists.txt

@@ -8,7 +8,7 @@ option(USE_LIBABYSS "enable libabyss" )
 option(USE_AVX2 "enable avx2 code" )
 option(USE_NETNS "enable networking namespace support. Linux only" )
 option(AMD_RYZEN_HACK "hack for AMD Ryzen FPU bug (support FMA3 and FMA4 in FPU, but does not show in CPUID)" )
-option(STATIC_LINK "emit fully linked binaries" )
+option(STATIC_LINK "do not build liblokinet-shared")
 option(NON_PC_TARGET "non-pc target build: iphone, andriod, embedded non-i386 SBC, etc" )
 option(SHADOW "use shadow testing framework. linux only" )
 option(ASAN "use address sanitiser, if your system has it" )
@@ -785,7 +785,11 @@ else()
 
   if(WITH_SHARED)
     add_library(${SHARED_LIB} SHARED ${LIB_SRC})
-    target_link_libraries(${SHARED_LIB} ${CRYPTOGRAPHY_LIB} ${LIBS} ${UTIL_LIB} ${PLATFORM_LIB} Threads::Threads)
-    install(TARGETS ${SHARED_LIB} LIBRARY DESTINATION lib)
+    if (WIN32)
+      target_link_libraries(${SHARED_LIB} ${CRYPTOGRAPHY_LIB} ${LIBS} ${UTIL_LIB} ${PLATFORM_LIB} ws2_32 iphlpapi Threads::Threads)
+    else (NOT WIN32)
+      target_link_libraries(${SHARED_LIB} ${CRYPTOGRAPHY_LIB} ${LIBS} ${UTIL_LIB} ${PLATFORM_LIB} Threads::Threads)
+      install(TARGETS ${SHARED_LIB} LIBRARY DESTINATION lib)
+    endif(WIN32)
   endif(WITH_SHARED)
 endif(SHADOW)

test/gtest/googletest/CMakeLists.txt

@@ -16,7 +16,11 @@ option(gtest_build_tests "Build all of gtest's own tests." OFF)
 
 option(gtest_build_samples "Build gtest's sample programs." OFF)
 
+if (WIN32)
+option(gtest_disable_pthreads "Disable uses of pthreads in gtest." ON)
+else (NOT WIN32)
 option(gtest_disable_pthreads "Disable uses of pthreads in gtest." OFF)
+endif(WIN32)
 
 option(
   gtest_hide_internal_symbols