fix signature generation failing under win32

tizzybec

2019-06-12 f0bab602c0d361f66a112e5a2db312b0da7dcd55

 src/tools/base_lib/CMakeLists.txt

@@ -17,3 +17,5 @@
     tools_base
     ${EXTERNAL_LIBS}
)

install(TARGETS tools_base ARCHIVE DESTINATION lib)