Merge topic 'WriteCompilerDetectionHeader-module'

62a4a67d Add the WriteCompilerDetectionHeader module.
This commit is contained in:
Brad King 2014-05-14 13:58:30 -04:00 committed by CMake Topic Stage
commit 2e347eb183
40 changed files with 682 additions and 0 deletions

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@ -232,3 +232,4 @@ All Modules
/module/UsewxWidgets
/module/Use_wxWindows
/module/WriteBasicConfigVersionFile
/module/WriteCompilerDetectionHeader

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@ -0,0 +1 @@
.. cmake-module:: ../../Modules/WriteCompilerDetectionHeader.cmake

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@ -0,0 +1,5 @@
module-WriteCompilerDetectionHeader
-----------------------------------
* The :module:`WriteCompilerDetectionHeader` module was added to allow
creation of a portable header file for compiler optional feature detection.

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@ -0,0 +1,401 @@
#.rst:
# WriteCompilerDetectionHeader
# ----------------------------
#
# This module provides the function write_compiler_detection_header().
#
# The ``WRITE_COMPILER_DETECTION_HEADER`` function can be used to generate
# a file suitable for preprocessor inclusion which contains macros to be
# used in source code::
#
# write_compiler_detection_header(
# FILE <file>
# PREFIX <prefix>
# COMPILERS <compiler> [...]
# FEATURES <feature> [...]
# [VERSION <version>]
# [PROLOG <prolog>]
# [EPILOG <epilog>]
# )
#
# The ``write_compiler_detection_header`` function generates the
# file ``<file>`` with macros which all have the prefix ``<prefix>``.
#
# ``VERSION`` may be used to specify the API version to be generated.
# Future versions of CMake may introduce alternative APIs. A given
# API is selected by any ``<version>`` value greater than or equal
# to the version of CMake that introduced the given API and less
# than the version of CMake that introduced its succeeding API.
# The value of the :variable:`CMAKE_MINIMUM_REQUIRED_VERSION`
# variable is used if no explicit version is specified.
# (As of CMake version |release| there is only one API version.)
#
# ``PROLOG`` may be specified as text content to write at the start of the
# header. ``EPILOG`` may be specified as text content to write at the end
# of the header
#
# At least one ``<compiler>`` and one ``<feature>`` must be listed. Compilers
# which are known to CMake, but not specified are detected and a preprocessor
# ``#error`` is generated for them. A preprocessor macro matching
# ``<PREFIX>_COMPILER_IS_<compiler>`` is generated for each compiler
# known to CMake to contain the value ``0`` or ``1``.
#
# Possible compiler identifiers are documented with the
# :variable:`CMAKE_<LANG>_COMPILER_ID` variable.
# Available features in this version of CMake are listed in the
# :prop_gbl:`CMAKE_CXX_KNOWN_FEATURES` global property.
#
# Feature Test Macros
# ===================
#
# For each compiler, a preprocessor test of the compiler version is generated
# denoting whether each feature is enabled. A preprocessor macro
# matching ``<PREFIX>_COMPILER_<FEATURE>``, where ``<FEATURE>`` is the
# upper-case ``<feature>`` name, is generated to contain the value
# ``0`` or ``1`` depending on whether the compiler in use supports the
# feature:
#
# .. code-block:: cmake
#
# write_compiler_detection_header(
# FILE climbingstats_compiler_detection.h
# PREFIX ClimbingStats
# COMPILERS GNU Clang MSVC
# FEATURES cxx_variadic_templates
# )
#
# .. code-block:: c++
#
# #if ClimbingStats_COMPILER_CXX_VARIADIC_TEMPLATES
# template<typename... T>
# void someInterface(T t...) { /* ... */ }
# #else
# // Compatibility versions
# template<typename T1>
# void someInterface(T1 t1) { /* ... */ }
# template<typename T1, typename T2>
# void someInterface(T1 t1, T2 t2) { /* ... */ }
# template<typename T1, typename T2, typename T3>
# void someInterface(T1 t1, T2 t2, T3 t3) { /* ... */ }
# #endif
#
# Symbol Macros
# =============
#
# Some additional symbol-defines are created for particular features for
# use as symbols which may be conditionally defined empty:
#
# .. code-block:: c++
#
# class MyClass ClimbingStats_DECL_CXX_FINAL
# {
# ClimbingStats_DECL_CXX_CONSTEXPR int someInterface() { return 42; }
# };
#
# The ``ClimbingStats_DECL_CXX_FINAL`` macro will expand to ``final`` if the
# compiler (and its flags) support the ``cxx_final`` feature, and the
# ``ClimbingStats_DECL_CXX_CONSTEXPR`` macro will expand to ``constexpr``
# if ``cxx_constexpr`` is supported.
#
# The following features generate corresponding symbol defines:
#
# ========================== =================================== =================
# Feature Define Symbol
# ========================== =================================== =================
# ``cxx_constexpr`` ``<PREFIX>_CONSTEXPR`` ``constexpr``
# ``cxx_deleted_functions`` ``<PREFIX>_DELETED_FUNCTION`` ``= delete``
# ``cxx_extern_templates`` ``<PREFIX>_EXTERN_TEMPLATE`` ``extern``
# ``cxx_final`` ``<PREFIX>_FINAL`` ``final``
# ``cxx_noexcept`` ``<PREFIX>_NOEXCEPT`` ``noexcept``
# ``cxx_noexcept`` ``<PREFIX>_NOEXCEPT_EXPR(X)`` ``noexcept(X)``
# ``cxx_override`` ``<PREFIX>_OVERRIDE`` ``override``
# ========================== =================================== =================
#
# Compatibility Implementation Macros
# ===================================
#
# Some features are suitable for wrapping in a macro with a backward
# compatibility implementation if the compiler does not support the feature.
#
# When the ``cxx_static_assert`` feature is not provided by the compiler,
# a compatibility implementation is available via the
# ``<PREFIX>_STATIC_ASSERT(COND)`` and
# ``<PREFIX>_STATIC_ASSERT_MSG(COND, MSG)`` function-like macros. The macros
# expand to ``static_assert`` where that compiler feature is available, and
# to a compatibility implementation otherwise. In the first form, the
# condition is stringified in the message field of ``static_assert``. In
# the second form, the message ``MSG`` is passed to the message field of
# ``static_assert``, or ignored if using the backward compatibility
# implementation.
#
# ====================== ================================ ===================
# Feature Define Symbol
# ====================== ================================ ===================
# ``cxx_alignas`` ``<PREFIX>_ALIGNAS`` ``alignas``
# ``cxx_alignof`` ``<PREFIX>_ALIGNOF`` ``alignof``
# ``cxx_nullptr`` ``<PREFIX>_NULLPTR`` ``nullptr``
# ``cxx_static_assert`` ``<PREFIX>_STATIC_ASSERT`` ``static_assert``
# ``cxx_static_assert`` ``<PREFIX>_STATIC_ASSERT_MSG`` ``static_assert``
# ====================== ================================ ===================
#=============================================================================
# Copyright 2014 Stephen Kelly <steveire@gmail.com>
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distribute this file outside of CMake, substitute the full
# License text for the above reference.)
include(${CMAKE_CURRENT_LIST_DIR}/CMakeParseArguments.cmake)
include(${CMAKE_CURRENT_LIST_DIR}/CMakeCompilerIdDetection.cmake)
function(_load_compiler_variables CompilerId lang)
include("${CMAKE_ROOT}/Modules/Compiler/${CompilerId}-${lang}-FeatureTests.cmake" OPTIONAL)
set(_cmake_oldestSupported_${CompilerId} ${_cmake_oldestSupported} PARENT_SCOPE)
foreach(feature ${ARGN})
set(_cmake_feature_test_${CompilerId}_${feature} ${_cmake_feature_test_${feature}} PARENT_SCOPE)
endforeach()
endfunction()
function(write_compiler_detection_header
file_keyword file_arg
prefix_keyword prefix_arg
)
if (NOT file_keyword STREQUAL FILE)
message(FATAL_ERROR "write_compiler_detection_header: FILE parameter missing.")
endif()
if (NOT prefix_keyword STREQUAL PREFIX)
message(FATAL_ERROR "write_compiler_detection_header: PREFIX parameter missing.")
endif()
set(options)
set(oneValueArgs VERSION EPILOG PROLOG)
set(multiValueArgs COMPILERS FEATURES)
cmake_parse_arguments(_WCD "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
if (NOT _WCD_COMPILERS)
message(FATAL_ERROR "Invalid arguments. write_compiler_detection_header requires at least one compiler.")
endif()
if (NOT _WCD_FEATURES)
message(FATAL_ERROR "Invalid arguments. write_compiler_detection_header requires at least one feature.")
endif()
if(_WCD_UNPARSED_ARGUMENTS)
message(FATAL_ERROR "Unparsed arguments: ${_WCD_UNPARSED_ARGUMENTS}")
endif()
if(NOT _WCD_VERSION)
set(_WCD_VERSION ${CMAKE_MINIMUM_REQUIRED_VERSION})
endif()
if (_WCD_VERSION VERSION_LESS 3.1.0) # Version which introduced this function
message(FATAL_ERROR "VERSION parameter too low.")
endif()
set(compilers
GNU
)
foreach(_comp ${_WCD_COMPILERS})
list(FIND compilers ${_comp} idx)
if (idx EQUAL -1)
message(FATAL_ERROR "Unsupported compiler ${_comp}.")
endif()
endforeach()
set(file_content "
// This is a generated file. Do not edit!
#ifndef ${prefix_arg}_COMPILER_DETECTION_H
#define ${prefix_arg}_COMPILER_DETECTION_H
")
if (_WCD_PROLOG)
set(file_content "${file_content}\n${_WCD_PROLOG}\n")
endif()
foreach(feature ${_WCD_FEATURES})
if (feature MATCHES "^cxx_")
list(APPEND _langs CXX)
list(APPEND CXX_features ${feature})
else()
message(FATAL_ERROR "Unsupported feature ${feature}.")
endif()
endforeach()
list(REMOVE_DUPLICATES _langs)
foreach(_lang ${_langs})
get_property(known_features GLOBAL PROPERTY CMAKE_${_lang}_KNOWN_FEATURES)
foreach(feature ${${_lang}_features})
list(FIND known_features ${feature} idx)
if (idx EQUAL -1)
message(FATAL_ERROR "Unsupported feature ${feature}.")
endif()
endforeach()
if(_lang STREQUAL CXX)
set(file_content "${file_content}\n#ifdef __cplusplus\n")
endif()
compiler_id_detection(ID_CONTENT ${_lang} PREFIX ${prefix_arg}_
ID_DEFINE
)
set(file_content "${file_content}${ID_CONTENT}\n")
set(pp_if "if")
foreach(compiler ${_WCD_COMPILERS})
_load_compiler_variables(${compiler} ${_lang} ${${_lang}_features})
set(file_content "${file_content}\n# ${pp_if} ${prefix_arg}_COMPILER_IS_${compiler}\n")
set(file_content "${file_content}
# if !(${_cmake_oldestSupported_${compiler}})
# error Unsupported compiler version
# endif\n")
set(pp_if "elif")
foreach(feature ${${_lang}_features})
string(TOUPPER ${feature} feature_upper)
set(feature_PP "COMPILER_${feature_upper}")
set(_define_item "\n# define ${prefix_arg}_${feature_PP} 0\n")
if (_cmake_feature_test_${compiler}_${feature} STREQUAL "1")
set(_define_item "\n# define ${prefix_arg}_${feature_PP} 1\n")
elseif (_cmake_feature_test_${compiler}_${feature})
set(_define_item "\n# define ${prefix_arg}_${feature_PP} 0\n")
set(_define_item "\n# if ${_cmake_feature_test_${compiler}_${feature}}\n# define ${prefix_arg}_${feature_PP} 1\n# else${_define_item}# endif\n")
endif()
set(file_content "${file_content}${_define_item}")
endforeach()
endforeach()
if(pp_if STREQUAL "elif")
set(file_content "${file_content}
# else
# error Unsupported compiler
# endif\n")
endif()
foreach(feature ${${_lang}_features})
string(TOUPPER ${feature} feature_upper)
set(feature_PP "COMPILER_${feature_upper}")
set(def_name ${prefix_arg}_${feature_PP})
if (feature STREQUAL cxx_constexpr)
set(def_value "${prefix_arg}_DECL_${feature_upper}")
set(file_content "${file_content}
# if ${def_name}
# define ${def_value} constexpr
# else
# define ${def_value}
# endif
\n")
endif()
if (feature STREQUAL cxx_final)
set(def_value "${prefix_arg}_DECL_${feature_upper}")
set(file_content "${file_content}
# if ${def_name}
# define ${def_value} final
# else
# define ${def_value}
# endif
\n")
endif()
if (feature STREQUAL cxx_override)
set(def_value "${prefix_arg}_DECL_${feature_upper}")
set(file_content "${file_content}
# if ${def_name}
# define ${def_value} override
# else
# define ${def_value}
# endif
\n")
endif()
if (feature STREQUAL cxx_static_assert)
set(def_value "${prefix_arg}_STATIC_ASSERT(X)")
set(def_value_msg "${prefix_arg}_STATIC_ASSERT_MSG(X, MSG)")
set(static_assert_struct "template<bool> struct ${prefix_arg}StaticAssert;\ntemplate<> struct ${prefix_arg}StaticAssert<true>{};\n")
set(def_standard "# define ${def_value} static_assert(X, #X)\n# define ${def_value_msg} static_assert(X, MSG)")
set(def_alternative "${static_assert_struct}# define ${def_value} sizeof(${prefix_arg}StaticAssert<X>)\n# define ${def_value_msg} sizeof(${prefix_arg}StaticAssert<X>)")
set(file_content "${file_content}# if ${def_name}\n${def_standard}\n# else\n${def_alternative}\n# endif\n\n")
endif()
if (feature STREQUAL cxx_alignas)
set(def_value "${prefix_arg}_ALIGNAS(X)")
set(file_content "${file_content}
# if ${def_name}
# define ${def_value} alignas(X)
# elif ${prefix_arg}_COMPILER_IS_GNU
# define ${def_value} __attribute__ ((__aligned__(X)))
# else
# define ${def_value}
# endif
\n")
endif()
if (feature STREQUAL cxx_alignof)
set(def_value "${prefix_arg}_ALIGNOF(X)")
set(file_content "${file_content}
# if ${def_name}
# define ${def_value} alignof(X)
# elif ${prefix_arg}_COMPILER_IS_GNU
# define ${def_value} __alignof__(X)
# endif
\n")
endif()
if (feature STREQUAL cxx_deleted_functions)
set(def_value "${prefix_arg}_DELETED_FUNCTION")
set(file_content "${file_content}
# if ${def_name}
# define ${def_value} = delete
# else
# define ${def_value}
# endif
\n")
endif()
if (feature STREQUAL cxx_extern_templates)
set(def_value "${prefix_arg}_EXTERN_TEMPLATE")
set(file_content "${file_content}
# if ${def_name}
# define ${def_value} extern
# else
# define ${def_value}
# endif
\n")
endif()
if (feature STREQUAL cxx_noexcept)
set(def_value "${prefix_arg}_NOEXCEPT")
set(file_content "${file_content}
# if ${def_name}
# define ${def_value} noexcept
# define ${def_value}_EXPR(X) noexcept(X)
# else
# define ${def_value}
# define ${def_value}_EXPR(X)
# endif
\n")
endif()
if (feature STREQUAL cxx_nullptr)
set(def_value "${prefix_arg}_NULLPTR")
set(file_content "${file_content}
# if ${def_name}
# define ${def_value} nullptr
# else
# define ${def_value} static_cast<void*>(0)
# endif
\n")
endif()
endforeach()
if(_lang STREQUAL CXX)
set(file_content "${file_content}#endif\n")
endif()
endforeach()
if (_WCD_EPILOG)
set(file_content "${file_content}\n${_WCD_EPILOG}\n")
endif()
set(file_content "${file_content}\n#endif")
set(CMAKE_CONFIGURABLE_FILE_CONTENT ${file_content})
configure_file("${CMAKE_ROOT}/Modules/CMakeConfigurableFile.in"
"${file_arg}"
@ONLY
)
endfunction()

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@ -411,6 +411,8 @@ if(BUILD_TESTING)
ADD_TEST_MACRO(Module.GenerateExportHeader GenerateExportHeader)
ADD_TEST_MACRO(Module.FindDependency FindDependency)
ADD_TEST_MACRO(Module.WriteCompilerDetectionHeader WriteCompilerDetectionHeader)
if (APPLE OR CMAKE_CXX_COMPILER_ID MATCHES "GNU")
include(CheckCXXCompilerFlag)
check_cxx_compiler_flag(-fPIE run_pic_test)

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@ -0,0 +1,79 @@
cmake_minimum_required(VERSION 3.0.0)
project(WriteCompilerDetectionHeader)
set(CMAKE_INCLUDE_CURRENT_DIR ON)
include(WriteCompilerDetectionHeader)
get_property(cxx_known_features GLOBAL PROPERTY CMAKE_CXX_KNOWN_FEATURES)
write_compiler_detection_header(
FILE "${CMAKE_CURRENT_BINARY_DIR}/test_compiler_detection.h"
PREFIX TEST
COMPILERS GNU
VERSION 3.1
PROLOG "// something"
EPILOG "// more"
FEATURES
${cxx_known_features}
)
if (NOT CMAKE_CXX_COMPILE_FEATURES)
file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/dummy.cpp"
"int main(int,char**) { return 0; }\n"
)
add_executable(WriteCompilerDetectionHeader "${CMAKE_CURRENT_BINARY_DIR}/dummy.cpp")
include(CheckCXXSourceCompiles)
check_cxx_source_compiles("#include \"${CMAKE_CURRENT_BINARY_DIR}/test_compiler_detection.h\"\nint main() { return 0; }\n"
file_include_works
)
if (file_include_works)
message(SEND_ERROR "Inclusion of ${CMAKE_CURRENT_BINARY_DIR}/test_compiler_detection.h was expected to cause an error, but did not.")
endif()
return()
endif()
macro(set_defines target true_defs false_defs)
set(defines)
foreach(def ${true_defs})
list(APPEND defines ${def}=1)
endforeach()
foreach(def ${false_defs})
list(APPEND defines ${def}=0)
endforeach()
target_compile_definitions(${target}
PRIVATE
${defines}
)
endmacro()
if (CMAKE_CXX_COMPILER_ID STREQUAL GNU)
# False for C++98 mode.
list(APPEND false_defs EXPECTED_COMPILER_CXX_DELEGATING_CONSTRUCTORS)
list(APPEND false_defs EXPECTED_COMPILER_CXX_VARIADIC_TEMPLATES)
endif()
add_executable(WriteCompilerDetectionHeader main.cpp)
set_property(TARGET WriteCompilerDetectionHeader PROPERTY CXX_STANDARD 98)
set_defines(WriteCompilerDetectionHeader "${true_defs}" "${false_defs}")
if(MSVC)
return() # MSVC has only one mode.
endif()
# Since GNU 4.7
if (";${CMAKE_CXX_COMPILE_FEATURES};" MATCHES ";cxx_delegating_constructors;")
list(APPEND true_defs EXPECTED_COMPILER_CXX_DELEGATING_CONSTRUCTORS)
list(REMOVE_ITEM false_defs EXPECTED_COMPILER_CXX_DELEGATING_CONSTRUCTORS)
endif()
# Since GNU 4.4
if (";${CMAKE_CXX_COMPILE_FEATURES};" MATCHES ";cxx_variadic_templates;")
list(APPEND true_defs EXPECTED_COMPILER_CXX_VARIADIC_TEMPLATES)
list(REMOVE_ITEM false_defs EXPECTED_COMPILER_CXX_VARIADIC_TEMPLATES)
endif()
add_executable(WriteCompilerDetectionHeader_11 main.cpp)
set_property(TARGET WriteCompilerDetectionHeader_11 PROPERTY CXX_STANDARD 11)
set_defines(WriteCompilerDetectionHeader_11 "${true_defs}" "${false_defs}")

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@ -0,0 +1,19 @@
#include "test_compiler_detection.h"
#define JOIN_IMPL(A, B) A ## B
#define JOIN(A, B) JOIN_IMPL(A, B)
#define CHECK(FEATURE) (JOIN(TEST_COMPILER_, FEATURE) == JOIN(EXPECTED_COMPILER_, FEATURE))
#if !CHECK(CXX_DELEGATING_CONSTRUCTORS)
#error cxx_delegating_constructors expected availability did not match.
#endif
#if !CHECK(CXX_VARIADIC_TEMPLATES)
#error cxx_variadic_templates expected availability did not match.
#endif
int main()
{
return 0;
}

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@ -54,6 +54,7 @@ add_RunCMake_test(TargetObjects)
add_RunCMake_test(TargetSources)
add_RunCMake_test(find_dependency)
add_RunCMake_test(CompileFeatures)
add_RunCMake_test(WriteCompilerDetectionHeader)
if(NOT WIN32)
add_RunCMake_test(PositionIndependentCode)
set(SKIP_VISIBILITY 0)

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@ -0,0 +1,3 @@
cmake_minimum_required(VERSION 3.0)
project(${RunCMake_TEST} CXX)
include(${RunCMake_TEST}.cmake NO_POLICY_SCOPE)

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@ -0,0 +1,5 @@
CMake Error at .*Modules/WriteCompilerDetectionHeader.cmake:[0-9]+ \(message\):
Unparsed arguments: GarbageArg
Call Stack \(most recent call first\):
ExtraArgs.cmake:4 \(write_compiler_detection_header\)
CMakeLists.txt:3 \(include\)

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@ -0,0 +1,10 @@
include(WriteCompilerDetectionHeader)
write_compiler_detection_header(
FILE "${CMAKE_CURRENT_BINARY_DIR}/somefile"
PREFIX Pref
GarbageArg
COMPILERS GNU
FEATURES cxx_final
)

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@ -0,0 +1 @@
1

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@ -0,0 +1,5 @@
CMake Error at .*Modules/WriteCompilerDetectionHeader.cmake:[0-9]+ \(message\):
write_compiler_detection_header: FILE parameter missing.
Call Stack \(most recent call first\):
FileTypo.cmake:4 \(write_compiler_detection_header\)
CMakeLists.txt:3 \(include\)

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@ -0,0 +1,7 @@
include(WriteCompilerDetectionHeader)
write_compiler_detection_header(
FILE_TYPO "${CMAKE_CURRENT_BINARY_DIR}/somefile"
PREFIX Pref
)

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@ -0,0 +1,11 @@
CMake Error at InvalidArgs.cmake:4 \(write_compiler_detection_header\):
write_compiler_detection_header Function invoked with incorrect arguments
for function named: write_compiler_detection_header
Call Stack \(most recent call first\):
CMakeLists.txt:3 \(include\)
+
CMake Error at InvalidArgs.cmake:6 \(write_compiler_detection_header\):
write_compiler_detection_header Function invoked with incorrect arguments
for function named: write_compiler_detection_header
Call Stack \(most recent call first\):
CMakeLists.txt:3 \(include\)

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@ -0,0 +1,6 @@
include(WriteCompilerDetectionHeader)
write_compiler_detection_header()
write_compiler_detection_header(FILE)

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@ -0,0 +1,5 @@
CMake Error at .*Modules/WriteCompilerDetectionHeader.cmake:[0-9]+ \(message\):
Unsupported feature cxx_not_a_feature.
Call Stack \(most recent call first\):
InvalidCXXFeature.cmake:4 \(write_compiler_detection_header\)
CMakeLists.txt:3 \(include\)

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@ -0,0 +1,10 @@
include(WriteCompilerDetectionHeader)
write_compiler_detection_header(
FILE "${CMAKE_CURRENT_BINARY_DIR}/somefile"
PREFIX PREF_
COMPILERS GNU
FEATURES cxx_not_a_feature
VERSION 3.1
)

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@ -0,0 +1,5 @@
CMake Error at .*Modules/WriteCompilerDetectionHeader.cmake:[0-9]+ \(message\):
Unsupported compiler NOT_A_COMPILER.
Call Stack \(most recent call first\):
InvalidCompiler.cmake:4 \(write_compiler_detection_header\)
CMakeLists.txt:3 \(include\)

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@ -0,0 +1,10 @@
include(WriteCompilerDetectionHeader)
write_compiler_detection_header(
FILE "${CMAKE_CURRENT_BINARY_DIR}/somefile"
PREFIX PREF_
COMPILERS NOT_A_COMPILER
FEATURES cxx_final
VERSION 3.1
)

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@ -0,0 +1,5 @@
CMake Error at .*Modules/WriteCompilerDetectionHeader.cmake:[0-9]+ \(message\):
Unsupported feature not_a_feature.
Call Stack \(most recent call first\):
InvalidFeature.cmake:4 \(write_compiler_detection_header\)
CMakeLists.txt:3 \(include\)

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@ -0,0 +1,10 @@
include(WriteCompilerDetectionHeader)
write_compiler_detection_header(
FILE "${CMAKE_CURRENT_BINARY_DIR}/somefile"
PREFIX PREF_
COMPILERS GNU
FEATURES not_a_feature
VERSION 3.1
)

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@ -0,0 +1,6 @@
CMake Error at .*Modules/WriteCompilerDetectionHeader.cmake:[0-9]+ \(message\):
Invalid arguments. write_compiler_detection_header requires at least one
compiler.
Call Stack \(most recent call first\):
NoCompiler.cmake:4 \(write_compiler_detection_header\)
CMakeLists.txt:3 \(include\)

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@ -0,0 +1,10 @@
include(WriteCompilerDetectionHeader)
write_compiler_detection_header(
FILE "${CMAKE_CURRENT_BINARY_DIR}/somefile"
PREFIX PREF_
# COMPILERS
FEATURES cxx_final
VERSION 3.1
)

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@ -0,0 +1,6 @@
CMake Error at .*Modules/WriteCompilerDetectionHeader.cmake:[0-9]+ \(message\):
Invalid arguments. write_compiler_detection_header requires at least one
feature.
Call Stack \(most recent call first\):
NoFeature.cmake:4 \(write_compiler_detection_header\)
CMakeLists.txt:3 \(include\)

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@ -0,0 +1,10 @@
include(WriteCompilerDetectionHeader)
write_compiler_detection_header(
FILE "${CMAKE_CURRENT_BINARY_DIR}/somefile"
PREFIX PREF_
COMPILERS GNU
# FEATURES
VERSION 3.1
)

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@ -0,0 +1,5 @@
CMake Error at .*Modules/WriteCompilerDetectionHeader.cmake:[0-9]+ \(message\):
VERSION parameter too low.
Call Stack \(most recent call first\):
OldVersion.cmake:4 \(write_compiler_detection_header\)
CMakeLists.txt:3 \(include\)

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@ -0,0 +1,10 @@
include(WriteCompilerDetectionHeader)
write_compiler_detection_header(
FILE "${CMAKE_CURRENT_BINARY_DIR}/somefile"
PREFIX Pref
VERSION 3.0
COMPILERS GNU
FEATURES cxx_final
)

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@ -0,0 +1,5 @@
CMake Error at .*Modules/WriteCompilerDetectionHeader.cmake:[0-9]+ \(message\):
write_compiler_detection_header: PREFIX parameter missing.
Call Stack \(most recent call first\):
PrefixTypo.cmake:4 \(write_compiler_detection_header\)
CMakeLists.txt:3 \(include\)

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@ -0,0 +1,7 @@
include(WriteCompilerDetectionHeader)
write_compiler_detection_header(
FILE "${CMAKE_CURRENT_BINARY_DIR}/somefile"
PREFIX_TYPO Pref
)

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include(RunCMake)
run_cmake(InvalidArgs)
run_cmake(NoCompiler)
run_cmake(NoFeature)
run_cmake(FileTypo)
run_cmake(PrefixTypo)
run_cmake(ExtraArgs)
run_cmake(OldVersion)
run_cmake(InvalidCompiler)
run_cmake(InvalidFeature)
run_cmake(InvalidCXXFeature)