diff options
Diffstat (limited to 'Help/command/try_compile.rst')
| -rw-r--r-- | Help/command/try_compile.rst | 32 |
1 files changed, 31 insertions, 1 deletions
diff --git a/Help/command/try_compile.rst b/Help/command/try_compile.rst index 7830deb..cde3776 100644 --- a/Help/command/try_compile.rst +++ b/Help/command/try_compile.rst @@ -35,7 +35,11 @@ Try Compiling Source Files [COMPILE_DEFINITIONS <defs>...] [LINK_LIBRARIES <libs>...] [OUTPUT_VARIABLE <var>] - [COPY_FILE <fileName> [COPY_FILE_ERROR <var>]]) + [COPY_FILE <fileName> [COPY_FILE_ERROR <var>]] + [<LANG>_STANDARD <std>] + [<LANG>_STANDARD_REQUIRED <bool>] + [<LANG>_EXTENSIONS <bool>] + ) Try building an executable from one or more source files. The success or failure of the ``try_compile``, i.e. ``TRUE`` or ``FALSE`` respectively, is @@ -82,6 +86,18 @@ The options are: ``OUTPUT_VARIABLE <var>`` Store the output from the build process the given variable. +``<LANG>_STANDARD <std>`` + Specify the :prop_tgt:`C_STANDARD` or :prop_tgt:`CXX_STANDARD` + target property of the generated project. + +``<LANG>_STANDARD_REQUIRED <bool>`` + Specify the :prop_tgt:`C_STANDARD_REQUIRED` or + :prop_tgt:`CXX_STANDARD_REQUIRED` target property of the generated project. + +``<LANG>_EXTENSIONS <bool>`` + Specify the :prop_tgt:`C_EXTENSIONS` or :prop_tgt:`CXX_EXTENSIONS` + target property of the generated project. + In this version all files in ``<bindir>/CMakeFiles/CMakeTmp`` will be cleaned automatically. For debugging, ``--debug-trycompile`` can be passed to ``cmake`` to avoid this clean. However, multiple sequential @@ -119,3 +135,17 @@ the type of target used for the source file signature. Set the :variable:`CMAKE_TRY_COMPILE_PLATFORM_VARIABLES` variable to specify variables that must be propagated into the test project. This variable is meant for use only in toolchain files. + +If :policy:`CMP0067` is set to ``NEW``, or any of the ``<LANG>_STANDARD``, +``<LANG>_STANDARD_REQUIRED``, or ``<LANG>_EXTENSIONS`` options are used, +then the language standard variables are honored: + +* :variable:`CMAKE_C_STANDARD` +* :variable:`CMAKE_C_STANDARD_REQUIRED` +* :variable:`CMAKE_C_EXTENSIONS` +* :variable:`CMAKE_CXX_STANDARD` +* :variable:`CMAKE_CXX_STANDARD_REQUIRED` +* :variable:`CMAKE_CXX_EXTENSIONS` + +Their values are used to set the corresponding target properties in +the generated project (unless overridden by an explicit option). |