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10 April 2024, 19:27:19 UTC
Revision d9a6e0ffc82fbc460289c6b0808eff27ac316235 authored by Craig Scott on 10 September 2022, 08:22:18 UTC, committed by Craig Scott on 10 September 2022, 08:23:21 UTC 
FetchContent: Fix unsetting wrong variable name after provider returns
 
The unset() command was using __cmake_contentNameLower before that
variable was restored from the __cmake_fcCurrentVarsStack. That means
if there had been a nested call to FetchContent_MakeAvailable(), the wrong
variable name would have been cleared (the nested name instead of the
one from the current call). That would have left the variable set upon return,
blocking the dependency provider from seeing any further calls to
FetchContent_MakeAvailable() in the current variable scope or below for the
current dependency.
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Tip revision: d9a6e0ffc82fbc460289c6b0808eff27ac316235 authored by Craig Scott on 10 September 2022, 08:22:18 UTC
FetchContent: Fix unsetting wrong variable name after provider returns
Tip revision: d9a6e0f
CheckOBJCCompilerFlag.cmake 
# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.

#[=======================================================================[.rst:
CheckOBJCCompilerFlag
---------------------

.. versionadded:: 3.16

Check whether the Objective-C compiler supports a given flag.

.. command:: check_objc_compiler_flag

  .. code-block:: cmake

    check_objc_compiler_flag(<flag> <var>)

  Check that the ``<flag>`` is accepted by the compiler without
  a diagnostic.  Stores the result in an internal cache entry
  named ``<var>``.

This command temporarily sets the ``CMAKE_REQUIRED_DEFINITIONS`` variable
and calls the ``check_objc_source_compiles`` macro from the
:module:`CheckOBJCSourceCompiles` module.  See documentation of that
module for a listing of variables that can otherwise modify the build.

A positive result from this check indicates only that the compiler did not
issue a diagnostic message when given the flag.  Whether the flag has any
effect or even a specific one is beyond the scope of this module.

.. note::
  Since the :command:`try_compile` command forwards flags from variables
  like :variable:`CMAKE_OBJC_FLAGS <CMAKE_<LANG>_FLAGS>`, unknown flags
  in such variables may cause a false negative for this check.
#]=======================================================================]

include_guard(GLOBAL)
include(CheckOBJCSourceCompiles)
include(Internal/CheckCompilerFlag)

macro (CHECK_OBJC_COMPILER_FLAG _FLAG _RESULT)
  cmake_check_compiler_flag(OBJC "${_FLAG}" ${_RESULT})
endmacro ()
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