update

Author: j2doll

CMakeLists.txt

@@ -8,11 +8,58 @@ set(CMAKE_CXX_STANDARD 17) # C++ 17
 set(CMAKE_CXX_STANDARD_REQUIRED True)
 
 if (CMAKE_SYSTEM_NAME STREQUAL "Linux") # Settings for Linux  
-    set(CMAKE_C_COMPLIER "gcc") # Settings for gcc (you may use clang)
-    set(CMAKE_CXX_FLAGS_DEBUG "-g")
-    set(CMAKE_CXX_FLAGS_RELEASE "-O3")
+    message(STATUS "OS : Linux")
+    if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
+        message(STATUS "C++ Compiler : gcc")
+        set(CMAKE_C_COMPLIER "gcc") 
+        set(CMAKE_CXX_FLAGS_DEBUG "-g")
+        set(CMAKE_CXX_FLAGS_RELEASE "-O3")
+    elseif (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
+        message(STATUS "C++ Compiler : clang")    
+        # ... 
+    elseif (CMAKE_CXX_COMPILER_ID STREQUAL "Intel")
+        message(STATUS "C++ Compiler : Intel")        
+        # ...         
+    elseif (CMAKE_CXX_COMPILER_ID STREQUAL "PGI")
+        message(STATUS "C++ Compiler : PGI (NVIDIA)")        
+        # ...         
+    elseif (CMAKE_CXX_COMPILER_ID STREQUAL "XL")
+        message(STATUS "C++ Compiler : IBM XL")        
+        # ...         
+    elseif (CMAKE_CXX_COMPILER_ID STREQUAL "Cray")
+        message(STATUS "C++ Compiler : Cray")        
+        # ...         
+    else()
+        message(STATUS "Using an unknown compiler")
+    endif()
 elseif (CMAKE_SYSTEM_NAME STREQUAL "Windows")
-    # ... 
+    message(STATUS "OS : Windows")
+    if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
+        message(STATUS "C++ Compiler : gcc")
+        # ...         
+    elseif (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
+        message(STATUS "C++ Compiler : clang")
+        # ...         
+    elseif (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
+        message(STATUS "C++ Compiler : Visual C++")
+        # ...         
+    elseif (CMAKE_CXX_COMPILER_ID STREQUAL "Embarcadero")
+        message(STATUS "C++ Compiler : C++ Builder (Embarcadero)")    
+        # ...         
+    else()
+        message(STATUS "Using an unknown compiler")
+    endif()
+elseif (CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+    message(STATUS "OS : macOS")   
+    # ...    
+elseif (CMAKE_SYSTEM_NAME STREQUAL "AIX")
+    message(STATUS "OS : IBM AIX")
+    # ...    
+elseif (CMAKE_SYSTEM_NAME STREQUAL "HP-UX")
+    message(STATUS "OS : HP Unix")
+    # ...
+else()
+    message(STATUS "Using an unknown OS")    
 endif()
 
 set (CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/build)
@@ -21,19 +68,27 @@ file(GLOB SOURCE_FILES CONFIGURE_DEPENDS
     ${CMAKE_CURRENT_SOURCE_DIR}/*.cpp
 )
 
-add_executable(${EXE} ${SOURCE_FILES})
+add_executable(${EXE} ${SOURCE_FILES}) 
 
-target_include_directories(${EXE} PUBLIC
-    # /hello/inc1
-    # /hello/inc2
+# TODO: Set include(*.h) directory
+target_include_directories(${EXE} PUBLIC 
+    # ${CMAKE_SOURCE_DIR}/include
     # $ENV{HELLO_ROOT}/inc
+    # /hello/inc2
 )
 
-target_link_directories(${EXE} PRIVATE
-    # /hello/lib
+# TODO: Set link directory
+target_link_directories(${EXE} PRIVATE 
     # $ENV{HELLO_ROOT}/lib
+    # /hello/lib2   
 )
 
+# TODO: Set link library(*.so,*.a)
+target_link_libraries(${EXE} PUBLIC 
+    # libHello2.so
+    # ${CMAKE_SOURCE_DIR}/lib/hello3.a
+    # /hello2/lib/test.a 
+)
 
 
 

hello.cpp

@@ -1,3 +1,4 @@
+// hello.cpp
 
 #include <iostream>
 #include <chrono>
@@ -9,7 +10,7 @@ int main(int argc, char* argv[]) {
     auto now = std::chrono::system_clock::now();
     std::time_t currentTime = std::chrono::system_clock::to_time_t(now);
     std::tm* localTime = std::localtime(&currentTime);
-    std::cout << "Hello! " << std::put_time(localTime, "%Y-%m-%d %H:%M:%S") << std::endl;
+    std::cout << "Hello, World! " << std::put_time(localTime, "%Y-%m-%d %H:%M:%S") << std::endl;
 
     return 0;
 }