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authorRyan Prichard <rprichard@google.com>2022-01-13 17:30:17 -0800
committerRyan Prichard <rprichard@google.com>2022-01-13 17:30:31 -0800
commit7aea7e9880110799088cd1de509886871078306f (patch)
tree5cf68b7dabd868f99ec4160cf1f7237ff63e4c37 /share/cmake-3.22/Modules/CheckPrototypeDefinition.cmake
parentd09ee7574f3e46668b23b3b6efebd0ea75de85b2 (diff)
downloaddarwin-x86-7aea7e9880110799088cd1de509886871078306f.tar.gz
Fusion2: http://fusion2/610fb8e3-5633-41a6-b50b-ed5819f55cd6 GCS path: gs://ndk-kokoro-release-artifacts/prod/ndk/cmake/darwin_release/3/20211215-131219 Prebuilt updated using: ndk/scripts/update_kokoro_prebuilts.py Test: Treehugger, Kokoro presubmit Bug: http://b/213946898 Change-Id: Icbb6d90cad49dbe67f168075508872b1704d9f61
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+# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
+# file Copyright.txt or https://cmake.org/licensing for details.
+
+#[=======================================================================[.rst:
+CheckPrototypeDefinition
+------------------------
+
+Check if the prototype we expect is correct.
+
+.. command:: check_prototype_definition
+
+ .. code-block:: cmake
+
+ check_prototype_definition(FUNCTION PROTOTYPE RETURN HEADER VARIABLE)
+
+ ::
+
+ FUNCTION - The name of the function (used to check if prototype exists)
+ PROTOTYPE- The prototype to check.
+ RETURN - The return value of the function.
+ HEADER - The header files required.
+ VARIABLE - The variable to store the result.
+ Will be created as an internal cache variable.
+
+ Example:
+
+ .. code-block:: cmake
+
+ check_prototype_definition(getpwent_r
+ "struct passwd *getpwent_r(struct passwd *src, char *buf, int buflen)"
+ "NULL"
+ "unistd.h;pwd.h"
+ SOLARIS_GETPWENT_R)
+
+The following variables may be set before calling this function to modify
+the way the check is run:
+
+``CMAKE_REQUIRED_FLAGS``
+ string of compile command line flags.
+``CMAKE_REQUIRED_DEFINITIONS``
+ list of macros to define (-DFOO=bar).
+``CMAKE_REQUIRED_INCLUDES``
+ list of include directories.
+``CMAKE_REQUIRED_LINK_OPTIONS``
+ .. versionadded:: 3.14
+ list of options to pass to link command.
+``CMAKE_REQUIRED_LIBRARIES``
+ list of libraries to link.
+``CMAKE_REQUIRED_QUIET``
+ .. versionadded:: 3.1
+ execute quietly without messages.
+#]=======================================================================]
+
+#
+
+get_filename_component(__check_proto_def_dir "${CMAKE_CURRENT_LIST_FILE}" PATH)
+
+include_guard(GLOBAL)
+
+function(check_prototype_definition _FUNCTION _PROTOTYPE _RETURN _HEADER _VARIABLE)
+
+ if (NOT DEFINED ${_VARIABLE})
+ if(NOT CMAKE_REQUIRED_QUIET)
+ message(CHECK_START "Checking prototype ${_FUNCTION} for ${_VARIABLE}")
+ endif()
+ set(CHECK_PROTOTYPE_DEFINITION_CONTENT "/* */\n")
+
+ set(CHECK_PROTOTYPE_DEFINITION_FLAGS ${CMAKE_REQUIRED_FLAGS})
+ if (CMAKE_REQUIRED_LINK_OPTIONS)
+ set(CHECK_PROTOTYPE_DEFINITION_LINK_OPTIONS
+ LINK_OPTIONS ${CMAKE_REQUIRED_LINK_OPTIONS})
+ else()
+ set(CHECK_PROTOTYPE_DEFINITION_LINK_OPTIONS)
+ endif()
+ if (CMAKE_REQUIRED_LIBRARIES)
+ set(CHECK_PROTOTYPE_DEFINITION_LIBS
+ LINK_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES})
+ else()
+ set(CHECK_PROTOTYPE_DEFINITION_LIBS)
+ endif()
+ if (CMAKE_REQUIRED_INCLUDES)
+ set(CMAKE_SYMBOL_EXISTS_INCLUDES
+ "-DINCLUDE_DIRECTORIES:STRING=${CMAKE_REQUIRED_INCLUDES}")
+ else()
+ set(CMAKE_SYMBOL_EXISTS_INCLUDES)
+ endif()
+
+ foreach(_FILE ${_HEADER})
+ string(APPEND CHECK_PROTOTYPE_DEFINITION_HEADER
+ "#include <${_FILE}>\n")
+ endforeach()
+
+ set(CHECK_PROTOTYPE_DEFINITION_SYMBOL ${_FUNCTION})
+ set(CHECK_PROTOTYPE_DEFINITION_PROTO ${_PROTOTYPE})
+ set(CHECK_PROTOTYPE_DEFINITION_RETURN ${_RETURN})
+
+ configure_file("${__check_proto_def_dir}/CheckPrototypeDefinition.c.in"
+ "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckPrototypeDefinition.c" @ONLY)
+
+ file(READ ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckPrototypeDefinition.c _SOURCE)
+
+ try_compile(${_VARIABLE}
+ ${CMAKE_BINARY_DIR}
+ ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckPrototypeDefinition.c
+ COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
+ ${CHECK_PROTOTYPE_DEFINITION_LINK_OPTIONS}
+ ${CHECK_PROTOTYPE_DEFINITION_LIBS}
+ CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${CHECK_PROTOTYPE_DEFINITION_FLAGS}
+ "${CMAKE_SYMBOL_EXISTS_INCLUDES}"
+ OUTPUT_VARIABLE OUTPUT)
+
+ if (${_VARIABLE})
+ set(${_VARIABLE} 1 CACHE INTERNAL "Have correct prototype for ${_FUNCTION}")
+ if(NOT CMAKE_REQUIRED_QUIET)
+ message(CHECK_PASS "True")
+ endif()
+ file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
+ "Determining if the prototype ${_FUNCTION} exists for ${_VARIABLE} passed with the following output:\n"
+ "${OUTPUT}\n\n")
+ else ()
+ if(NOT CMAKE_REQUIRED_QUIET)
+ message(CHECK_FAIL "False")
+ endif()
+ set(${_VARIABLE} 0 CACHE INTERNAL "Have correct prototype for ${_FUNCTION}")
+ file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
+ "Determining if the prototype ${_FUNCTION} exists for ${_VARIABLE} failed with the following output:\n"
+ "${OUTPUT}\n\n${_SOURCE}\n\n")
+ endif ()
+ endif()
+
+endfunction()