From cf48022dc52fe5dd8161d591e4fb8b1f076ce52e Mon Sep 17 00:00:00 2001 From: scivision Date: Wed, 8 Mar 2023 00:23:49 -0500 Subject: Help:Check*: include CMAKE_REQUIRED_* vars to dedupe CMAKE_REQUIRED_FLAGS now notes that space-delimited string, not ;-list is required, which could be surprising compared to similar options that do use ;-list --- Modules/CheckOBJCXXSourceRuns.cmake | 58 ++++++++++++------------------------- 1 file changed, 19 insertions(+), 39 deletions(-) (limited to 'Modules/CheckOBJCXXSourceRuns.cmake') diff --git a/Modules/CheckOBJCXXSourceRuns.cmake b/Modules/CheckOBJCXXSourceRuns.cmake index 05a5e4cf59..b2831b6ed3 100644 --- a/Modules/CheckOBJCXXSourceRuns.cmake +++ b/Modules/CheckOBJCXXSourceRuns.cmake @@ -23,47 +23,27 @@ subsequently be run. be set to 1, otherwise it will be set to an value that evaluates to boolean false (e.g. an empty string or an error message). - The underlying check is performed by the :command:`try_run` command. The - compile and link commands can be influenced by setting any of the following - variables prior to calling ``check_objcxx_source_runs()``: - - ``CMAKE_REQUIRED_FLAGS`` - Additional flags to pass to the compiler. Note that the contents of - :variable:`CMAKE_OBJCXX_FLAGS _FLAGS>` and its associated - configuration-specific variable are automatically added to the compiler - command before the contents of ``CMAKE_REQUIRED_FLAGS``. - - ``CMAKE_REQUIRED_DEFINITIONS`` - A :ref:`;-list ` of compiler definitions of the form - ``-DFOO`` or ``-DFOO=bar``. A definition for the name specified by - ```` will also be added automatically. - - ``CMAKE_REQUIRED_INCLUDES`` - A :ref:`;-list ` of header search paths to pass to - the compiler. These will be the only header search paths used by - ``try_run()``, i.e. the contents of the :prop_dir:`INCLUDE_DIRECTORIES` - directory property will be ignored. - - ``CMAKE_REQUIRED_LINK_OPTIONS`` - A :ref:`;-list ` of options to add to the link - command (see :command:`try_run` for further details). - - ``CMAKE_REQUIRED_LIBRARIES`` - A :ref:`;-list ` of libraries to add to the link - command. These can be the name of system libraries or they can be - :ref:`Imported Targets ` (see :command:`try_run` for - further details). - - ``CMAKE_REQUIRED_QUIET`` - If this variable evaluates to a boolean true value, all status messages - associated with the check will be suppressed. - - The check is only performed once, with the result cached in the variable - named by ````. Every subsequent CMake run will re-use this cached - value rather than performing the check again, even if the ```` changes. - In order to force the check to be re-evaluated, the variable named by + The check is only performed once, with the result cached in the variable named + by ````. Every subsequent CMake run will re-use this cached value + rather than performing the check again, even if the ```` changes. In + order to force the check to be re-evaluated, the variable named by ```` must be manually removed from the cache. + The compile and link commands can be influenced by setting any of the + following variables prior to calling ``check_objcxx_source_runs()`` + +.. include:: /module/CMAKE_REQUIRED_FLAGS.txt + +.. include:: /module/CMAKE_REQUIRED_DEFINITIONS.txt + +.. include:: /module/CMAKE_REQUIRED_INCLUDES.txt + +.. include:: /module/CMAKE_REQUIRED_LINK_OPTIONS.txt + +.. include:: /module/CMAKE_REQUIRED_LIBRARIES.txt + +.. include:: /module/CMAKE_REQUIRED_QUIET.txt + #]=======================================================================] include_guard(GLOBAL) -- cgit v1.2.1