CMakeLists.txt: Only copy .deb package script on unix-like systems.

CMakeLists.txt

@@ -12,12 +12,6 @@ find_package(OpenSSL 1.1 REQUIRED)
 
 include_directories( ${OPENSSL_INCLUDE_DIR} )
 
-# Hack to set the right permissions :)
-configure_file(scripts/generate_deb.sh.in ${PROJECT_BINARY_DIR}/tmp/generate_deb.sh @ONLY)
-file(COPY ${PROJECT_BINARY_DIR}/tmp/generate_deb.sh DESTINATION ${PROJECT_BINARY_DIR}
-    FILE_PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE
-)
-
 add_executable( ${CMAKE_PROJECT_NAME}
 	src/ec.cpp
 	src/base58.cpp
@@ -52,5 +46,14 @@ if (WIN32)
 	install(FILES ${OPENSSL_LIBCRYPTO_DLL} DESTINATION ${INSTALL_BIN_DIR})
 endif (WIN32)
 
+# Debian .deb generation script
+if (UNIX) # Only include in bash environments.
+	# Hack to set the right permissions :)
+	configure_file(scripts/generate_deb.sh.in ${PROJECT_BINARY_DIR}/tmp/generate_deb.sh @ONLY)
+	file(COPY ${PROJECT_BINARY_DIR}/tmp/generate_deb.sh DESTINATION ${PROJECT_BINARY_DIR}
+	    FILE_PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE
+	)
+endif (UNIX)
+
 install(TARGETS ${CMAKE_PROJECT_NAME} RUNTIME DESTINATION ${INSTALL_BIN_DIR})
 install(FILES README.md LICENSE LICENSE.bitcoin DESTINATION ${INSTALL_SHARE_DIR})