CMake: generate rfbconfig.h in CMAKE_CURRENT_BINARY_DIR

This helps including the repo as a submodule in other CMake-based projects.

Author: bk138

CMakeLists.txt

@@ -311,7 +311,7 @@ endif(WITH_SASL AND LIBSASL2_LIBRARIES AND SASL2_INCLUDE_DIR)
 # LIBVNCSERVER_ENOENT_WORKAROUND
 # inline
 
-configure_file(${CMAKE_CURRENT_SOURCE_DIR}/rfb/rfbconfig.h.cmakein ${CMAKE_BINARY_DIR}/rfb/rfbconfig.h)
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/rfb/rfbconfig.h.cmakein ${CMAKE_CURRENT_BINARY_DIR}/rfb/rfbconfig.h)
 
 set(LIBVNCSERVER_SOURCES
     ${LIBVNCSERVER_DIR}/main.c