cmake: move _WIN32_WINNT definitions to root

CMakeLists.txt

@@ -263,6 +263,11 @@ ELSE ()
 	ENDIF ()
 ENDIF()
 
+# Ensure that MinGW provides the correct header files.
+IF (WIN32 AND NOT CYGWIN)
+	ADD_DEFINITIONS(-DWIN32 -D_WIN32_WINNT=0x0600)
+ENDIF()
+
 IF( NOT CMAKE_CONFIGURATION_TYPES )
 	# Build Debug by default
 	IF (NOT CMAKE_BUILD_TYPE)

fuzzers/CMakeLists.txt

-# Ensure that MinGW provides the correct header files.
-IF (WIN32 AND NOT CYGWIN)
-	ADD_DEFINITIONS(-DWIN32 -D_WIN32_WINNT=0x0600)
-ENDIF()
-
 LINK_DIRECTORIES(${LIBGIT2_LIBDIRS})
 INCLUDE_DIRECTORIES(${LIBGIT2_INCLUDES})
 INCLUDE_DIRECTORIES(SYSTEM ${LIBGIT2_SYSTEM_INCLUDES})

src/CMakeLists.txt

@@ -299,8 +299,6 @@ FILE(GLOB SRC_H
 
 # On Windows use specific platform sources
 IF (WIN32 AND NOT CYGWIN)
-	ADD_DEFINITIONS(-DWIN32 -D_WIN32_WINNT=0x0600)
-
 	IF(MSVC)
 		SET(WIN_RC "win32/git2.rc")
 	ENDIF()

tests/CMakeLists.txt

@@ -14,11 +14,6 @@ ADD_DEFINITIONS(-D_FILE_OFFSET_BITS=64)
 # Ensure that we do not use deprecated functions internally
 ADD_DEFINITIONS(-DGIT_DEPRECATE_HARD)
 
-# Ensure that MinGW provides the correct header files.
-IF (WIN32 AND NOT CYGWIN)
-	ADD_DEFINITIONS(-DWIN32 -D_WIN32_WINNT=0x0600)
-ENDIF()
-
 INCLUDE_DIRECTORIES(${CLAR_PATH} ${libgit2_BINARY_DIR}/src)
 FILE(GLOB_RECURSE SRC_TEST ${CLAR_PATH}/*/*.c ${CLAR_PATH}/*/*.h)
 SET(SRC_CLAR "main.c" "clar_libgit2.c" "clar_libgit2_trace.c" "clar_libgit2_timer.c" "clar.c")