cmake: Delete check_cxx_source_links* macros

Author: hebasto

cmake/module/CheckSourceCompilesAndLinks.cmake

@@ -3,8 +3,6 @@
 # file COPYING or https://opensource.org/license/mit/.
 
 include_guard(GLOBAL)
-include(CheckCXXSourceCompiles)
-include(CMakePushCheckState)
 
 #[=[
 Check once if C++ source code can be compiled.
@@ -34,10 +32,3 @@ function(check_cxx_source_compiles_with_flags source result_var)
   check_cxx_source_compiles("${source}" ${result_var})
   set(${result_var} ${${result_var}} PARENT_SCOPE)
 endfunction()
-
-macro(check_cxx_source_links_with_libs libs source)
-  cmake_push_check_state(RESET)
-  set(CMAKE_REQUIRED_LIBRARIES "${libs}")
-  check_cxx_source_compiles("${source}" ${ARGN})
-  cmake_pop_check_state()
-endmacro()

cmake/module/TestAppendRequiredLibraries.cmake

@@ -25,10 +25,13 @@ function(test_append_socket_library target)
     }
   ")
 
-  include(CheckSourceCompilesAndLinks)
+  include(CheckCXXSourceCompiles)
   check_cxx_source_compiles("${check_socket_source}" IFADDR_LINKS_WITHOUT_LIBSOCKET)
   if(NOT IFADDR_LINKS_WITHOUT_LIBSOCKET)
-    check_cxx_source_links_with_libs(socket "${check_socket_source}" IFADDR_NEEDS_LINK_TO_LIBSOCKET)
+    include(CheckSourceCompilesAndLinks)
+    check_cxx_source_compiles_with_flags("${check_socket_source}" IFADDR_NEEDS_LINK_TO_LIBSOCKET
+      LINK_LIBRARIES socket
+    )
     if(IFADDR_NEEDS_LINK_TO_LIBSOCKET)
       target_link_libraries(${target} INTERFACE socket)
     else()
@@ -77,16 +80,17 @@ function(test_append_atomic_library target)
     }
   ")
 
-  include(CheckSourceCompilesAndLinks)
+  include(CheckCXXSourceCompiles)
   check_cxx_source_compiles("${check_atomic_source}" STD_ATOMIC_LINKS_WITHOUT_LIBATOMIC)
-  if(STD_ATOMIC_LINKS_WITHOUT_LIBATOMIC)
-    return()
-  endif()
-
-  check_cxx_source_links_with_libs(atomic "${check_atomic_source}" STD_ATOMIC_NEEDS_LINK_TO_LIBATOMIC)
-  if(STD_ATOMIC_NEEDS_LINK_TO_LIBATOMIC)
-    target_link_libraries(${target} INTERFACE atomic)
-  else()
-    message(FATAL_ERROR "Cannot figure out how to use std::atomic.")
+  if(NOT STD_ATOMIC_LINKS_WITHOUT_LIBATOMIC)
+    include(CheckSourceCompilesAndLinks)
+    check_cxx_source_compiles_with_flags("${check_atomic_source}" STD_ATOMIC_NEEDS_LINK_TO_LIBATOMIC
+      LINK_LIBRARIES atomic
+    )
+    if(STD_ATOMIC_NEEDS_LINK_TO_LIBATOMIC)
+      target_link_libraries(${target} INTERFACE atomic)
+    else()
+      message(FATAL_ERROR "Cannot figure out how to use std::atomic.")
+    endif()
   endif()
 endfunction()