Update cmake files.

setter/src/linux/CMakeLists.txt

@@ -0,0 +1,16 @@
+if(NOT "${CMAKE_SYSTEM_NAME}" MATCHES "Linux")
+    return()
+endif()
+
+project(
+        fssetter-linux
+        DESCRIPTION "Filesystem test creator for Linux"
+        LANGUAGES C)
+
+set(PLATFORM_SOURCES attr.c sparse.c xattr.c)
+
+set(EXECUTABLE_NAME "fssetter-${CMAKE_SYSTEM_NAME}-${CMAKE_SYSTEM_PROCESSOR}")
+
+add_executable(${EXECUTABLE_NAME} ${PLATFORM_SOURCES})
+
+target_link_libraries(${EXECUTABLE_NAME} core unix)