use variable direcly instead of deferencing

Author: ChuanqiXu9

CMakeLists.txt

@@ -29,15 +29,15 @@ find_package(Benchmark)
 option(ASYNC_SIMPLE_ENABLE_TESTS "Build the tests" ON)
 option(ASYNC_SIMPLE_DISABLE_AIO "Don't build SimpleIOExecutor with AIO" OFF)
 
-if(NOT ${ASYNC_SIMPLE_DISABLE_AIO} AND LIBAIO_INCLUDE_DIR AND LIBAIO_LIBRARIES)
+if(NOT ASYNC_SIMPLE_DISABLE_AIO AND LIBAIO_INCLUDE_DIR AND LIBAIO_LIBRARIES)
     message(STATUS "aio found")
     message(STATUS "aio: ${LIBAIO_INCLUDE_DIR}, ${LIBAIO_LIBRARIES}.")
 else()
     # Just for SimpleIOExecutor.h
     add_definitions(-DASYNC_SIMPLE_HAS_NOT_AIO)
 endif()
 
-if (${ASYNC_SIMPLE_ENABLE_TESTS})
+if (ASYNC_SIMPLE_ENABLE_TESTS)
     find_package(GTest)
 endif()
 
@@ -117,7 +117,7 @@ set(testdeplibs)
 list(APPEND testdeplibs ${GTEST_LIBRARIES})
 list(APPEND testdeplibs ${GMOCK_LIBRARIES})
 list(APPEND testdeplibs ${CMAKE_THREAD_LIBS_INIT})
-if(NOT ${ASYNC_SIMPLE_DISABLE_AIO} AND LIBAIO_INCLUDE_DIR AND LIBAIO_LIBRARIES)
+if(NOT ASYNC_SIMPLE_DISABLE_AIO AND LIBAIO_INCLUDE_DIR AND LIBAIO_LIBRARIES)
     list(APPEND testdeplibs ${LIBAIO_LIBRARIES})
 endif()
 

async_simple/CMakeLists.txt

@@ -103,7 +103,7 @@ install(FILES "${CMAKE_CURRENT_BINARY_DIR}/async_simple-config.cmake"
         DESTINATION share/async_simple)
 
 
-if (${ASYNC_SIMPLE_ENABLE_TESTS})
+if (ASYNC_SIMPLE_ENABLE_TESTS)
   add_subdirectory(test)
   add_subdirectory(util/test)
   add_subdirectory(coro/test)

benchmarks/CMakeLists.txt

@@ -18,6 +18,6 @@ endif()
 add_executable(benchmarking ${BENCHMARK_SRCS})
 target_link_libraries(benchmarking ${BENCHMARK_LIBRARIES} async_simple)
 
-if(NOT ${ASYNC_SIMPLE_DISABLE_AIO} AND LIBAIO_INCLUDE_DIR AND LIBAIO_LIBRARIES)
+if(NOT ASYNC_SIMPLE_DISABLE_AIO AND LIBAIO_INCLUDE_DIR AND LIBAIO_LIBRARIES)
   target_link_libraries(benchmarking ${LIBAIO_LIBRARIES})
 endif()

demo_example/CMakeLists.txt

@@ -14,7 +14,7 @@ endif()
 add_executable(ReadFiles ReadFiles.cpp)
 target_link_libraries(ReadFiles async_simple)
 
-if(NOT ${ASYNC_SIMPLE_DISABLE_AIO} AND LIBAIO_INCLUDE_DIR AND LIBAIO_LIBRARIES)
+if(NOT ASYNC_SIMPLE_DISABLE_AIO AND LIBAIO_INCLUDE_DIR AND LIBAIO_LIBRARIES)
   target_link_libraries(ReadFiles ${LIBAIO_LIBRARIES})
 endif()