Merge topic 'try-compile'

f266182aec Check* functions family: add support for LINK_OPTIONS
29f9db5c63 try_compile/try_run: Add support for LINK_OPTIONS option.

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !2661

1 files changed, 25 insertions, 9 deletions

diff --git a/Modules/CheckFortranFunctionExists.cmake b/Modules/CheckFortranFunctionExists.cmake
index dc371aa..7ca205a 100644
--- a/Modules/CheckFortranFunctionExists.cmake
+++ b/Modules/CheckFortranFunctionExists.cmake
@@ -5,24 +5,33 @@
 CheckFortranFunctionExists
 --------------------------
 
-:command:`Macro <macro>` which checks if a Fortran function exists.
+Check if a Fortran function exists.
 
-.. code-block:: cmake
+.. command:: CHECK_FORTRAN_FUNCTION_EXISTS
 
-  CHECK_FORTRAN_FUNCTION_EXISTS(<function> <result>)
+  .. code-block:: cmake
 
-where
+    CHECK_FORTRAN_FUNCTION_EXISTS(<function> <result>)
 
-``<function>``
-  the name of the Fortran function
-``<result>``
-  variable to store the result; will be created as an internal cache variable.
+  where
+
+  ``<function>``
+    the name of the Fortran function
+  ``<result>``
+    variable to store the result; will be created as an internal cache variable.
 
 The following variables may be set before calling this macro to modify
 the way the check is run:
 
+``CMAKE_REQUIRED_LINK_OPTIONS``
+  A :ref:`;-list <CMake Language Lists>` of options to add to the link
+  command (see :command:`try_compile` for further details).
+
 ``CMAKE_REQUIRED_LIBRARIES``
-  list of libraries to link
+  A :ref:`;-list <CMake Language Lists>` of libraries to add to the link
+  command. These can be the name of system libraries or they can be
+  :ref:`Imported Targets <Imported Targets>` (see :command:`try_compile` for
+  further details).
 #]=======================================================================]
 
 include_guard(GLOBAL)
@@ -30,6 +39,12 @@ include_guard(GLOBAL)
 macro(CHECK_FORTRAN_FUNCTION_EXISTS FUNCTION VARIABLE)
   if(NOT DEFINED ${VARIABLE})
     message(STATUS "Looking for Fortran ${FUNCTION}")
+    if(CMAKE_REQUIRED_LINK_OPTIONS)
+      set(CHECK_FUNCTION_EXISTS_ADD_LINK_OPTIONS
+        LINK_OPTIONS ${CMAKE_REQUIRED_LINK_OPTIONS})
+    else()
+      set(CHECK_FUNCTION_EXISTS_ADD_LINK_OPTIONS)
+    endif()
     if(CMAKE_REQUIRED_LIBRARIES)
       set(CHECK_FUNCTION_EXISTS_ADD_LIBRARIES
         LINK_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES})
@@ -48,6 +63,7 @@ macro(CHECK_FORTRAN_FUNCTION_EXISTS FUNCTION VARIABLE)
     try_compile(${VARIABLE}
     ${CMAKE_BINARY_DIR}
     ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testFortranCompiler.f
+    ${CHECK_FUNCTION_EXISTS_ADD_LINK_OPTIONS}
     ${CHECK_FUNCTION_EXISTS_ADD_LIBRARIES}
     OUTPUT_VARIABLE OUTPUT
     )