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gflags
Commit 32b03091 authored by Andreas Schuh's avatar Andreas Schuh
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#101 Enable C language again as long as FindThreads requires it 

This avoids having patched CMake modules in the source tree of the gflags library. Usually a C compiler is installed along a C++ compiler (or it is used for C as well). The only slight downside is the extra configuration time needed by CMake to check the C compiler.
parent 379d22da
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Showing with 9 additions and 906 deletions
CMakeLists.txt
View file @ 32b03091
...@@ -18,6 +18,14 @@ set (PACKAGE_TARNAME "${PACKAGE_NAME}-${PACKAGE_VERSION}") ...@@ -18,6 +18,14 @@ set (PACKAGE_TARNAME "${PACKAGE_NAME}-${PACKAGE_VERSION}")
set (PACKAGE_BUGREPORT "https://code.google.com/p/gflags/issues/") set (PACKAGE_BUGREPORT "https://code.google.com/p/gflags/issues/")
project (${PACKAGE_NAME} CXX) project (${PACKAGE_NAME} CXX)
if (CMAKE_VERSION VERSION_LESS 100)
# C language still needed because the following required CMake modules
# (or their dependencies, respectively) are not correctly handling
# the case where only CXX is enabled.
# - CheckTypeSize.cmake (fixed in CMake 3.1, cf. http://www.cmake.org/Bug/view.php?id=14056)
# - FindThreads.cmake (--> CheckIncludeFiles.cmake <--)
enable_language (C)
endif ()
version_numbers ( version_numbers (
${PACKAGE_VERSION} ${PACKAGE_VERSION}
...@@ -179,7 +187,7 @@ else () ...@@ -179,7 +187,7 @@ else ()
endif () endif ()
set (CMAKE_THREAD_PREFER_PTHREAD TRUE) set (CMAKE_THREAD_PREFER_PTHREAD TRUE)
find_package (ThreadsCXX) find_package (Threads)
if (Threads_FOUND AND CMAKE_USE_PTHREADS_INIT) if (Threads_FOUND AND CMAKE_USE_PTHREADS_INIT)
set (HAVE_PTHREAD 1) set (HAVE_PTHREAD 1)
check_type_size (pthread_rwlock_t RWLOCK LANGUAGE CXX) check_type_size (pthread_rwlock_t RWLOCK LANGUAGE CXX)
......
cmake/CMakeCXXInformation.cmake deleted 100644 → 0
View file @ 379d22da
# Copied from master branch of CMake (commit SHA 34a49dea) before release of
# this newer version which seems to fix a bug of the one coming with CMake 2.8-12.
#=============================================================================
# Copyright 2004-2011 Kitware, Inc.
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distribute this file outside of CMake, substitute the full
# License text for the above reference.)
# This file sets the basic flags for the C++ language in CMake.
# It also loads the available platform file for the system-compiler
# if it exists.
# It also loads a system - compiler - processor (or target hardware)
# specific file, which is mainly useful for crosscompiling and embedded systems.
# some compilers use different extensions (e.g. sdcc uses .rel)
# so set the extension here first so it can be overridden by the compiler specific file
if(UNIX)
set(CMAKE_CXX_OUTPUT_EXTENSION .o)
else()
set(CMAKE_CXX_OUTPUT_EXTENSION .obj)
endif()
set(_INCLUDED_FILE 0)
# Load compiler-specific information.
if(CMAKE_CXX_COMPILER_ID)
include(Compiler/${CMAKE_CXX_COMPILER_ID}-CXX OPTIONAL)
endif()
set(CMAKE_BASE_NAME)
get_filename_component(CMAKE_BASE_NAME "${CMAKE_CXX_COMPILER}" NAME_WE)
# since the gnu compiler has several names force g++
if(CMAKE_COMPILER_IS_GNUCXX)
set(CMAKE_BASE_NAME g++)
endif()
# load a hardware specific file, mostly useful for embedded compilers
if(CMAKE_SYSTEM_PROCESSOR)
if(CMAKE_CXX_COMPILER_ID)
include(Platform/${CMAKE_SYSTEM_NAME}-${CMAKE_CXX_COMPILER_ID}-CXX-${CMAKE_SYSTEM_PROCESSOR} OPTIONAL RESULT_VARIABLE _INCLUDED_FILE)
endif()
if (NOT _INCLUDED_FILE)
include(Platform/${CMAKE_SYSTEM_NAME}-${CMAKE_BASE_NAME}-${CMAKE_SYSTEM_PROCESSOR} OPTIONAL)
endif ()
endif()
# load the system- and compiler specific files
if(CMAKE_CXX_COMPILER_ID)
include(Platform/${CMAKE_SYSTEM_NAME}-${CMAKE_CXX_COMPILER_ID}-CXX OPTIONAL RESULT_VARIABLE _INCLUDED_FILE)
endif()
if (NOT _INCLUDED_FILE)
include(Platform/${CMAKE_SYSTEM_NAME}-${CMAKE_BASE_NAME} OPTIONAL
RESULT_VARIABLE _INCLUDED_FILE)
endif ()
# We specify the compiler information in the system file for some
# platforms, but this language may not have been enabled when the file
# was first included. Include it again to get the language info.
# Remove this when all compiler info is removed from system files.
if (NOT _INCLUDED_FILE)
include(Platform/${CMAKE_SYSTEM_NAME} OPTIONAL)
endif ()
if(CMAKE_CXX_SIZEOF_DATA_PTR)
foreach(f ${CMAKE_CXX_ABI_FILES})
include(${f})
endforeach()
unset(CMAKE_CXX_ABI_FILES)
endif()
# This should be included before the _INIT variables are
# used to initialize the cache. Since the rule variables
# have if blocks on them, users can still define them here.
# But, it should still be after the platform file so changes can
# be made to those values.
if(CMAKE_USER_MAKE_RULES_OVERRIDE)
# Save the full path of the file so try_compile can use it.
include(${CMAKE_USER_MAKE_RULES_OVERRIDE} RESULT_VARIABLE _override)
set(CMAKE_USER_MAKE_RULES_OVERRIDE "${_override}")
endif()
if(CMAKE_USER_MAKE_RULES_OVERRIDE_CXX)
# Save the full path of the file so try_compile can use it.
include(${CMAKE_USER_MAKE_RULES_OVERRIDE_CXX} RESULT_VARIABLE _override)
set(CMAKE_USER_MAKE_RULES_OVERRIDE_CXX "${_override}")
endif()
# Create a set of shared library variable specific to C++
# For 90% of the systems, these are the same flags as the C versions
# so if these are not set just copy the flags from the c version
if(NOT CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS)
set(CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS ${CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS})
endif()
if(NOT CMAKE_CXX_COMPILE_OPTIONS_PIC)
set(CMAKE_CXX_COMPILE_OPTIONS_PIC ${CMAKE_C_COMPILE_OPTIONS_PIC})
endif()
if(NOT CMAKE_CXX_COMPILE_OPTIONS_PIE)
set(CMAKE_CXX_COMPILE_OPTIONS_PIE ${CMAKE_C_COMPILE_OPTIONS_PIE})
endif()
if(NOT CMAKE_CXX_COMPILE_OPTIONS_DLL)
set(CMAKE_CXX_COMPILE_OPTIONS_DLL ${CMAKE_C_COMPILE_OPTIONS_DLL})
endif()
if(NOT CMAKE_SHARED_LIBRARY_CXX_FLAGS)
set(CMAKE_SHARED_LIBRARY_CXX_FLAGS ${CMAKE_SHARED_LIBRARY_C_FLAGS})
endif()
if(NOT DEFINED CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS)
set(CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS ${CMAKE_SHARED_LIBRARY_LINK_C_FLAGS})
endif()
if(NOT CMAKE_SHARED_LIBRARY_RUNTIME_CXX_FLAG)
set(CMAKE_SHARED_LIBRARY_RUNTIME_CXX_FLAG ${CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG})
endif()
if(NOT CMAKE_SHARED_LIBRARY_RUNTIME_CXX_FLAG_SEP)
set(CMAKE_SHARED_LIBRARY_RUNTIME_CXX_FLAG_SEP ${CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG_SEP})
endif()
if(NOT CMAKE_SHARED_LIBRARY_RPATH_LINK_CXX_FLAG)
set(CMAKE_SHARED_LIBRARY_RPATH_LINK_CXX_FLAG ${CMAKE_SHARED_LIBRARY_RPATH_LINK_C_FLAG})
endif()
if(NOT DEFINED CMAKE_EXE_EXPORTS_CXX_FLAG)
set(CMAKE_EXE_EXPORTS_CXX_FLAG ${CMAKE_EXE_EXPORTS_C_FLAG})
endif()
if(NOT DEFINED CMAKE_SHARED_LIBRARY_SONAME_CXX_FLAG)
set(CMAKE_SHARED_LIBRARY_SONAME_CXX_FLAG ${CMAKE_SHARED_LIBRARY_SONAME_C_FLAG})
endif()
if(NOT CMAKE_EXECUTABLE_RUNTIME_CXX_FLAG)
set(CMAKE_EXECUTABLE_RUNTIME_CXX_FLAG ${CMAKE_SHARED_LIBRARY_RUNTIME_CXX_FLAG})
endif()
if(NOT CMAKE_EXECUTABLE_RUNTIME_CXX_FLAG_SEP)
set(CMAKE_EXECUTABLE_RUNTIME_CXX_FLAG_SEP ${CMAKE_SHARED_LIBRARY_RUNTIME_CXX_FLAG_SEP})
endif()
if(NOT CMAKE_EXECUTABLE_RPATH_LINK_CXX_FLAG)
set(CMAKE_EXECUTABLE_RPATH_LINK_CXX_FLAG ${CMAKE_SHARED_LIBRARY_RPATH_LINK_CXX_FLAG})
endif()
if(NOT DEFINED CMAKE_SHARED_LIBRARY_LINK_CXX_WITH_RUNTIME_PATH)
set(CMAKE_SHARED_LIBRARY_LINK_CXX_WITH_RUNTIME_PATH ${CMAKE_SHARED_LIBRARY_LINK_C_WITH_RUNTIME_PATH})
endif()
if(NOT CMAKE_INCLUDE_FLAG_CXX)
set(CMAKE_INCLUDE_FLAG_CXX ${CMAKE_INCLUDE_FLAG_C})
endif()
if(NOT CMAKE_INCLUDE_FLAG_SEP_CXX)
set(CMAKE_INCLUDE_FLAG_SEP_CXX ${CMAKE_INCLUDE_FLAG_SEP_C})
endif()
# for most systems a module is the same as a shared library
# so unless the variable CMAKE_MODULE_EXISTS is set just
# copy the values from the LIBRARY variables
if(NOT CMAKE_MODULE_EXISTS)
set(CMAKE_SHARED_MODULE_CXX_FLAGS ${CMAKE_SHARED_LIBRARY_CXX_FLAGS})
set(CMAKE_SHARED_MODULE_CREATE_CXX_FLAGS ${CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS})
endif()
# repeat for modules
if(NOT CMAKE_SHARED_MODULE_CREATE_CXX_FLAGS)
set(CMAKE_SHARED_MODULE_CREATE_CXX_FLAGS ${CMAKE_SHARED_MODULE_CREATE_C_FLAGS})
endif()
if(NOT CMAKE_SHARED_MODULE_CXX_FLAGS)
set(CMAKE_SHARED_MODULE_CXX_FLAGS ${CMAKE_SHARED_MODULE_C_FLAGS})
endif()
# Initialize CXX link type selection flags from C versions.
foreach(type SHARED_LIBRARY SHARED_MODULE EXE)
if(NOT CMAKE_${type}_LINK_STATIC_CXX_FLAGS)
set(CMAKE_${type}_LINK_STATIC_CXX_FLAGS
${CMAKE_${type}_LINK_STATIC_C_FLAGS})
endif()
if(NOT CMAKE_${type}_LINK_DYNAMIC_CXX_FLAGS)
set(CMAKE_${type}_LINK_DYNAMIC_CXX_FLAGS
${CMAKE_${type}_LINK_DYNAMIC_C_FLAGS})
endif()
endforeach()
# add the flags to the cache based
# on the initial values computed in the platform/*.cmake files
# use _INIT variables so that this only happens the first time
# and you can set these flags in the cmake cache
set(CMAKE_CXX_FLAGS_INIT "$ENV{CXXFLAGS} ${CMAKE_CXX_FLAGS_INIT}")
# avoid just having a space as the initial value for the cache
if(CMAKE_CXX_FLAGS_INIT STREQUAL " ")
set(CMAKE_CXX_FLAGS_INIT)
endif()
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS_INIT}" CACHE STRING
"Flags used by the compiler during all build types.")
if(NOT CMAKE_NOT_USING_CONFIG_FLAGS)
set (CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG_INIT}" CACHE STRING
"Flags used by the compiler during debug builds.")
set (CMAKE_CXX_FLAGS_MINSIZEREL "${CMAKE_CXX_FLAGS_MINSIZEREL_INIT}" CACHE STRING
"Flags used by the compiler during release builds for minimum size.")
set (CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE_INIT}" CACHE STRING
"Flags used by the compiler during release builds.")
set (CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO_INIT}" CACHE STRING
"Flags used by the compiler during release builds with debug info.")
endif()
if(CMAKE_CXX_STANDARD_LIBRARIES_INIT)
set(CMAKE_CXX_STANDARD_LIBRARIES "${CMAKE_CXX_STANDARD_LIBRARIES_INIT}"
CACHE STRING "Libraries linked by default with all C++ applications.")
mark_as_advanced(CMAKE_CXX_STANDARD_LIBRARIES)
endif()
include(CMakeCommonLanguageInclude)
# now define the following rules:
# CMAKE_CXX_CREATE_SHARED_LIBRARY
# CMAKE_CXX_CREATE_SHARED_MODULE
# CMAKE_CXX_COMPILE_OBJECT
# CMAKE_CXX_LINK_EXECUTABLE
# variables supplied by the generator at use time
# <TARGET>
# <TARGET_BASE> the target without the suffix
# <OBJECTS>
# <OBJECT>
# <LINK_LIBRARIES>
# <FLAGS>
# <LINK_FLAGS>
# CXX compiler information
# <CMAKE_CXX_COMPILER>
# <CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS>
# <CMAKE_CXX_SHARED_MODULE_CREATE_FLAGS>
# <CMAKE_CXX_LINK_FLAGS>
# Static library tools
# <CMAKE_AR>
# <CMAKE_RANLIB>
# create a shared C++ library
if(NOT CMAKE_CXX_CREATE_SHARED_LIBRARY)
set(CMAKE_CXX_CREATE_SHARED_LIBRARY
"<CMAKE_CXX_COMPILER> <CMAKE_SHARED_LIBRARY_CXX_FLAGS> <LANGUAGE_COMPILE_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS> <CMAKE_SHARED_LIBRARY_SONAME_CXX_FLAG><TARGET_SONAME> -o <TARGET> <OBJECTS> <LINK_LIBRARIES>")
endif()
# create a c++ shared module copy the shared library rule by default
if(NOT CMAKE_CXX_CREATE_SHARED_MODULE)
set(CMAKE_CXX_CREATE_SHARED_MODULE ${CMAKE_CXX_CREATE_SHARED_LIBRARY})
endif()
# Create a static archive incrementally for large object file counts.
# If CMAKE_CXX_CREATE_STATIC_LIBRARY is set it will override these.
if(NOT DEFINED CMAKE_CXX_ARCHIVE_CREATE)
set(CMAKE_CXX_ARCHIVE_CREATE "<CMAKE_AR> cr <TARGET> <LINK_FLAGS> <OBJECTS>")
endif()
if(NOT DEFINED CMAKE_CXX_ARCHIVE_APPEND)
set(CMAKE_CXX_ARCHIVE_APPEND "<CMAKE_AR> r <TARGET> <LINK_FLAGS> <OBJECTS>")
endif()
if(NOT DEFINED CMAKE_CXX_ARCHIVE_FINISH)
set(CMAKE_CXX_ARCHIVE_FINISH "<CMAKE_RANLIB> <TARGET>")
endif()
# compile a C++ file into an object file
if(NOT CMAKE_CXX_COMPILE_OBJECT)
set(CMAKE_CXX_COMPILE_OBJECT
"<CMAKE_CXX_COMPILER> <DEFINES> <FLAGS> -o <OBJECT> -c <SOURCE>")
endif()
if(NOT CMAKE_CXX_LINK_EXECUTABLE)
set(CMAKE_CXX_LINK_EXECUTABLE
"<CMAKE_CXX_COMPILER> <FLAGS> <CMAKE_CXX_LINK_FLAGS> <LINK_FLAGS> <OBJECTS> -o <TARGET> <LINK_LIBRARIES>")
endif()
mark_as_advanced(
CMAKE_VERBOSE_MAKEFILE
CMAKE_CXX_FLAGS
CMAKE_CXX_FLAGS_RELEASE
CMAKE_CXX_FLAGS_RELWITHDEBINFO
CMAKE_CXX_FLAGS_MINSIZEREL
CMAKE_CXX_FLAGS_DEBUG)
set(CMAKE_CXX_INFORMATION_LOADED 1)
cmake/CheckCXXLibraryExists.cmake deleted 100644 → 0
View file @ 379d22da
#.rst:
# CheckLibraryExists
# ------------------
#
# Check if the function exists.
#
# CHECK_LIBRARY_EXISTS (LIBRARY FUNCTION LOCATION VARIABLE)
#
# ::
#
# LIBRARY - the name of the library you are looking for
# FUNCTION - the name of the function
# LOCATION - location where the library should be found
# VARIABLE - variable to store the result
#
#
#
# The following variables may be set before calling this macro 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_LIBRARIES = list of libraries to link
#=============================================================================
# Copyright 2002-2009 Kitware, Inc.
#
# 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.)
macro(CHECK_CXX_LIBRARY_EXISTS LIBRARY FUNCTION LOCATION VARIABLE)
if("${VARIABLE}" MATCHES "^${VARIABLE}$")
set(MACRO_CHECK_LIBRARY_EXISTS_DEFINITION
"-DCHECK_FUNCTION_EXISTS=${FUNCTION} ${CMAKE_REQUIRED_FLAGS}")
message(STATUS "Looking for ${FUNCTION} in ${LIBRARY}")
set(CHECK_LIBRARY_EXISTS_LIBRARIES ${LIBRARY})
if(CMAKE_REQUIRED_LIBRARIES)
set(CHECK_LIBRARY_EXISTS_LIBRARIES
${CHECK_LIBRARY_EXISTS_LIBRARIES} ${CMAKE_REQUIRED_LIBRARIES})
endif()
configure_file(${CMAKE_ROOT}/Modules/CheckFunctionExists.c
${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CheckFunctionExists.cxx COPYONLY)
try_compile(${VARIABLE}
${CMAKE_BINARY_DIR}
${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CheckFunctionExists.cxx
COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
LINK_LIBRARIES ${CHECK_LIBRARY_EXISTS_LIBRARIES}
CMAKE_FLAGS
-DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_LIBRARY_EXISTS_DEFINITION}
-DLINK_DIRECTORIES:STRING=${LOCATION}
OUTPUT_VARIABLE OUTPUT)
if(${VARIABLE})
message(STATUS "Looking for ${FUNCTION} in ${LIBRARY} - found")
set(${VARIABLE} 1 CACHE INTERNAL "Have library ${LIBRARY}")
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
"Determining if the function ${FUNCTION} exists in the ${LIBRARY} "
"passed with the following output:\n"
"${OUTPUT}\n\n")
else()
message(STATUS "Looking for ${FUNCTION} in ${LIBRARY} - not found")
set(${VARIABLE} "" CACHE INTERNAL "Have library ${LIBRARY}")
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
"Determining if the function ${FUNCTION} exists in the ${LIBRARY} "
"failed with the following output:\n"
"${OUTPUT}\n\n")
endif()
endif()
endmacro()
cmake/CheckForPthreads.cxx deleted 100644 → 0
View file @ 379d22da
#include <stdio.h>
#include <pthread.h>
#include <unistd.h>
void* runner(void*);
int res = 0;
#ifdef __CLASSIC_C__
int main(){
int ac;
char*av[];
#else
int main(int ac, char*av[]){
#endif
pthread_t tid[2];
pthread_create(&tid[0], 0, runner, (void*)1);
pthread_create(&tid[1], 0, runner, (void*)2);
#if defined(__BEOS__) && !defined(__ZETA__) // (no usleep on BeOS 5.)
usleep(1); // for strange behavior on single-processor sun
#endif
pthread_join(tid[0], 0);
pthread_join(tid[1], 0);
if(ac > 1000){return *av[0];}
return res;
}
void* runner(void* args)
{
int cc;
for ( cc = 0; cc < 10; cc ++ )
{
printf("%p CC: %d\n", args, cc);
}
res ++;
return 0;
}
cmake/CheckTypeSize.c.in deleted 100644 → 0
View file @ 379d22da
@headers@
#undef KEY
#if defined(__i386)
# define KEY '_','_','i','3','8','6'
#elif defined(__x86_64)
# define KEY '_','_','x','8','6','_','6','4'
#elif defined(__ppc__)
# define KEY '_','_','p','p','c','_','_'
#elif defined(__ppc64__)
# define KEY '_','_','p','p','c','6','4','_','_'
#endif
#define SIZE (sizeof(@type@))
char info_size[] = {'I', 'N', 'F', 'O', ':', 's','i','z','e','[',
('0' + ((SIZE / 10000)%10)),
('0' + ((SIZE / 1000)%10)),
('0' + ((SIZE / 100)%10)),
('0' + ((SIZE / 10)%10)),
('0' + (SIZE % 10)),
']',
#ifdef KEY
' ','k','e','y','[', KEY, ']',
#endif
'\0'};
#ifdef __CLASSIC_C__
int main(argc, argv) int argc; char *argv[];
#else
int main(int argc, char *argv[])
#endif
{
int require = 0;
require += info_size[argc];
(void)argv;
return require;
}
cmake/CheckTypeSize.cmake deleted 100644 → 0
View file @ 379d22da
# Copied from master branch of CMake (commit SHA 34a49dea) and
# modified to use CheckIncludeFileCXX instead of CheckIncludeFile
# when the LANGUAGE is CXX. Modified the try_compile call to
# not pass any LINK_LIBRARIES as this option is only supported by
# CMake since version 2.8.11
# -andreas
#.rst:
# CheckTypeSize
# -------------
#
# Check sizeof a type
#
# ::
#
# CHECK_TYPE_SIZE(TYPE VARIABLE [BUILTIN_TYPES_ONLY]
# [LANGUAGE <language>])
#
# Check if the type exists and determine its size. On return,
# "HAVE_${VARIABLE}" holds the existence of the type, and "${VARIABLE}"
# holds one of the following:
#
# ::
#
# <size> = type has non-zero size <size>
# "0" = type has arch-dependent size (see below)
# "" = type does not exist
#
# Furthermore, the variable "${VARIABLE}_CODE" holds C preprocessor code
# to define the macro "${VARIABLE}" to the size of the type, or leave
# the macro undefined if the type does not exist.
#
# The variable "${VARIABLE}" may be "0" when CMAKE_OSX_ARCHITECTURES has
# multiple architectures for building OS X universal binaries. This
# indicates that the type size varies across architectures. In this
# case "${VARIABLE}_CODE" contains C preprocessor tests mapping from
# each architecture macro to the corresponding type size. The list of
# architecture macros is stored in "${VARIABLE}_KEYS", and the value for
# each key is stored in "${VARIABLE}-${KEY}".
#
# If the BUILTIN_TYPES_ONLY option is not given, the macro checks for
# headers <sys/types.h>, <stdint.h>, and <stddef.h>, and saves results
# in HAVE_SYS_TYPES_H, HAVE_STDINT_H, and HAVE_STDDEF_H. The type size
# check automatically includes the available headers, thus supporting
# checks of types defined in the headers.
#
# If LANGUAGE is set, the specified compiler will be used to perform the
# check. Acceptable values are C and CXX
#
# Despite the name of the macro you may use it to check the size of more
# complex expressions, too. To check e.g. for the size of a struct
# member you can do something like this:
#
# ::
#
# check_type_size("((struct something*)0)->member" SIZEOF_MEMBER)
#
#
#
# The following variables may be set before calling this macro to modify
# the way the check is run:
#
# ::
#
# CMAKE_REQUIRED_FLAGS = string of compile command line flags
# CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar)
# CMAKE_REQUIRED_INCLUDES = list of include directories
# CMAKE_EXTRA_INCLUDE_FILES = list of extra headers to include
#=============================================================================
# Copyright 2002-2009 Kitware, Inc.
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distribute this file outside of CMake, substitute the full
# License text for the above reference.)
include(CheckIncludeFile)
include(CheckIncludeFileCXX)
cmake_policy(PUSH)
cmake_minimum_required(VERSION 2.6 FATAL_ERROR)
get_filename_component(__check_type_size_dir "${CMAKE_CURRENT_LIST_FILE}" PATH)
#-----------------------------------------------------------------------------
# Helper function. DO NOT CALL DIRECTLY.
function(__check_type_size_impl type var map builtin language)
message(STATUS "Check size of ${type}")
# Include header files.
set(headers)
if(builtin)
if(HAVE_SYS_TYPES_H)
set(headers "${headers}#include <sys/types.h>\n")
endif()
if(HAVE_STDINT_H)
set(headers "${headers}#include <stdint.h>\n")
endif()
if(HAVE_STDDEF_H)
set(headers "${headers}#include <stddef.h>\n")
endif()
endif()
foreach(h ${CMAKE_EXTRA_INCLUDE_FILES})
set(headers "${headers}#include \"${h}\"\n")
endforeach()
# Perform the check.
if("${language}" STREQUAL "C")
set(src ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CheckTypeSize/${var}.c)
elseif("${language}" STREQUAL "CXX")
set(src ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CheckTypeSize/${var}.cpp)
else()
message(FATAL_ERROR "Unknown language:\n ${language}\nSupported languages: C, CXX.\n")
endif()
set(bin ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CheckTypeSize/${var}.bin)
configure_file(${__check_type_size_dir}/CheckTypeSize.c.in ${src} @ONLY)
try_compile(HAVE_${var} ${CMAKE_BINARY_DIR} ${src}
COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
CMAKE_FLAGS
"-DCOMPILE_DEFINITIONS:STRING=${CMAKE_REQUIRED_FLAGS}"
"-DINCLUDE_DIRECTORIES:STRING=${CMAKE_REQUIRED_INCLUDES}"
OUTPUT_VARIABLE output
COPY_FILE ${bin}
)
if(HAVE_${var})
# The check compiled. Load information from the binary.
file(STRINGS ${bin} strings LIMIT_COUNT 10 REGEX "INFO:size")
# Parse the information strings.
set(regex_size ".*INFO:size\\[0*([^]]*)\\].*")
set(regex_key " key\\[([^]]*)\\]")
set(keys)
set(code)
set(mismatch)
set(first 1)
foreach(info ${strings})
if("${info}" MATCHES "${regex_size}")
# Get the type size.
string(REGEX REPLACE "${regex_size}" "\\1" size "${info}")
if(first)
set(${var} ${size})
elseif(NOT "${size}" STREQUAL "${${var}}")
set(mismatch 1)
endif()
set(first 0)
# Get the architecture map key.
string(REGEX MATCH "${regex_key}" key "${info}")
string(REGEX REPLACE "${regex_key}" "\\1" key "${key}")
if(key)
set(code "${code}\nset(${var}-${key} \"${size}\")")
list(APPEND keys ${key})
endif()
endif()
endforeach()
# Update the architecture-to-size map.
if(mismatch AND keys)
configure_file(${__check_type_size_dir}/CheckTypeSizeMap.cmake.in ${map} @ONLY)
set(${var} 0)
else()
file(REMOVE ${map})
endif()
if(mismatch AND NOT keys)
message(SEND_ERROR "CHECK_TYPE_SIZE found different results, consider setting CMAKE_OSX_ARCHITECTURES or CMAKE_TRY_COMPILE_OSX_ARCHITECTURES to one or no architecture !")
endif()
message(STATUS "Check size of ${type} - done")
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
"Determining size of ${type} passed with the following output:\n${output}\n\n")
set(${var} "${${var}}" CACHE INTERNAL "CHECK_TYPE_SIZE: sizeof(${type})")
else()
# The check failed to compile.
message(STATUS "Check size of ${type} - failed")
file(READ ${src} content)
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
"Determining size of ${type} failed with the following output:\n${output}\n${src}:\n${content}\n\n")
set(${var} "" CACHE INTERNAL "CHECK_TYPE_SIZE: ${type} unknown")
file(REMOVE ${map})
endif()
endfunction()
#-----------------------------------------------------------------------------
macro(CHECK_TYPE_SIZE TYPE VARIABLE)
# parse arguments
unset(doing)
foreach(arg ${ARGN})
if("x${arg}" STREQUAL "xBUILTIN_TYPES_ONLY")
set(_CHECK_TYPE_SIZE_${arg} 1)
unset(doing)
elseif("x${arg}" STREQUAL "xLANGUAGE") # change to MATCHES for more keys
set(doing "${arg}")
set(_CHECK_TYPE_SIZE_${doing} "")
elseif("x${doing}" STREQUAL "xLANGUAGE")
set(_CHECK_TYPE_SIZE_${doing} "${arg}")
unset(doing)
else()
message(FATAL_ERROR "Unknown argument:\n ${arg}\n")
endif()
endforeach()
if("x${doing}" MATCHES "^x(LANGUAGE)$")
message(FATAL_ERROR "Missing argument:\n ${doing} arguments requires a value\n")
endif()
if(DEFINED _CHECK_TYPE_SIZE_LANGUAGE)
if(NOT "x${_CHECK_TYPE_SIZE_LANGUAGE}" MATCHES "^x(C|CXX)$")
message(FATAL_ERROR "Unknown language:\n ${_CHECK_TYPE_SIZE_LANGUAGE}.\nSupported languages: C, CXX.\n")
endif()
set(_language ${_CHECK_TYPE_SIZE_LANGUAGE})
else()
set(_language C)
endif()
# Optionally check for standard headers.
if(_CHECK_TYPE_SIZE_BUILTIN_TYPES_ONLY)
set(_builtin 0)
else()
set(_builtin 1)
if ("x${_CHECK_TYPE_SIZE_LANGUAGE}" STREQUAL "xCXX")
check_include_file_cxx(sys/types.h HAVE_SYS_TYPES_H)
check_include_file_cxx(stdint.h HAVE_STDINT_H)
check_include_file_cxx(stddef.h HAVE_STDDEF_H)
else ()
check_include_file(sys/types.h HAVE_SYS_TYPES_H)
check_include_file(stdint.h HAVE_STDINT_H)
check_include_file(stddef.h HAVE_STDDEF_H)
endif ()
endif()
unset(_CHECK_TYPE_SIZE_BUILTIN_TYPES_ONLY)
unset(_CHECK_TYPE_SIZE_LANGUAGE)
# Compute or load the size or size map.
set(${VARIABLE}_KEYS)
set(_map_file ${CMAKE_BINARY_DIR}/${CMAKE_FILES_DIRECTORY}/CheckTypeSize/${VARIABLE}.cmake)
if(NOT DEFINED HAVE_${VARIABLE})
__check_type_size_impl(${TYPE} ${VARIABLE} ${_map_file} ${_builtin} ${_language})
endif()
include(${_map_file} OPTIONAL)
set(_map_file)
set(_builtin)
# Create preprocessor code.
if(${VARIABLE}_KEYS)
set(${VARIABLE}_CODE)
set(_if if)
foreach(key ${${VARIABLE}_KEYS})
set(${VARIABLE}_CODE "${${VARIABLE}_CODE}#${_if} defined(${key})\n# define ${VARIABLE} ${${VARIABLE}-${key}}\n")
set(_if elif)
endforeach()
set(${VARIABLE}_CODE "${${VARIABLE}_CODE}#else\n# error ${VARIABLE} unknown\n#endif")
set(_if)
elseif(${VARIABLE})
set(${VARIABLE}_CODE "#define ${VARIABLE} ${${VARIABLE}}")
else()
set(${VARIABLE}_CODE "/* #undef ${VARIABLE} */")
endif()
endmacro()
#-----------------------------------------------------------------------------
cmake_policy(POP)
cmake/CheckTypeSizeMap.cmake.in deleted 100644 → 0
View file @ 379d22da
set(@var@_KEYS "@keys@")@code@
cmake/FindThreadsCXX.cmake deleted 100644 → 0
View file @ 379d22da
#.rst:
# FindThreads
# -----------
#
# This module determines the thread library of the system.
#
# The following variables are set
#
# ::
#
# CMAKE_THREAD_LIBS_INIT - the thread library
# CMAKE_USE_SPROC_INIT - are we using sproc?
# CMAKE_USE_WIN32_THREADS_INIT - using WIN32 threads?
# CMAKE_USE_PTHREADS_INIT - are we using pthreads
# CMAKE_HP_PTHREADS_INIT - are we using hp pthreads
#
# For systems with multiple thread libraries, caller can set
#
# ::
#
# CMAKE_THREAD_PREFER_PTHREAD
#=============================================================================
# Copyright 2002-2009 Kitware, Inc.
#
# 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 (CheckIncludeFileCXX)
include (CheckCXXLibraryExists)
include (CheckCXXSymbolExists)
set(Threads_FOUND FALSE)
# Do we have sproc?
if(CMAKE_SYSTEM MATCHES IRIX AND NOT CMAKE_THREAD_PREFER_PTHREAD)
CHECK_INCLUDE_FILES_CXX("sys/types.h;sys/prctl.h" CMAKE_HAVE_SPROC_H)
endif()
if(CMAKE_HAVE_SPROC_H AND NOT CMAKE_THREAD_PREFER_PTHREAD)
# We have sproc
set(CMAKE_USE_SPROC_INIT 1)
else()
# Do we have pthreads?
CHECK_INCLUDE_FILE_CXX("pthread.h" CMAKE_HAVE_PTHREAD_H)
if(CMAKE_HAVE_PTHREAD_H)
#
# We have pthread.h
# Let's check for the library now.
#
set(CMAKE_HAVE_THREADS_LIBRARY)
if(NOT THREADS_HAVE_PTHREAD_ARG)
# Check if pthread functions are in normal C library
CHECK_CXX_SYMBOL_EXISTS(pthread_create pthread.h CMAKE_HAVE_LIBC_CREATE)
if(CMAKE_HAVE_LIBC_CREATE)
set(CMAKE_THREAD_LIBS_INIT "")
set(CMAKE_HAVE_THREADS_LIBRARY 1)
set(Threads_FOUND TRUE)
endif()
if(NOT CMAKE_HAVE_THREADS_LIBRARY)
# Do we have -lpthreads
CHECK_CXX_LIBRARY_EXISTS(pthreads pthread_create "" CMAKE_HAVE_PTHREADS_CREATE)
if(CMAKE_HAVE_PTHREADS_CREATE)
set(CMAKE_THREAD_LIBS_INIT "-lpthreads")
set(CMAKE_HAVE_THREADS_LIBRARY 1)
set(Threads_FOUND TRUE)
endif()
# Ok, how about -lpthread
CHECK_CXX_LIBRARY_EXISTS(pthread pthread_create "" CMAKE_HAVE_PTHREAD_CREATE)
if(CMAKE_HAVE_PTHREAD_CREATE)
set(CMAKE_THREAD_LIBS_INIT "-lpthread")
set(CMAKE_HAVE_THREADS_LIBRARY 1)
set(Threads_FOUND TRUE)
endif()
if(CMAKE_SYSTEM MATCHES "SunOS.*")
# On sun also check for -lthread
CHECK_CXX_LIBRARY_EXISTS(thread thr_create "" CMAKE_HAVE_THR_CREATE)
if(CMAKE_HAVE_THR_CREATE)
set(CMAKE_THREAD_LIBS_INIT "-lthread")
set(CMAKE_HAVE_THREADS_LIBRARY 1)
set(Threads_FOUND TRUE)
endif()
endif()
endif()
endif()
if(NOT CMAKE_HAVE_THREADS_LIBRARY)
# If we did not found -lpthread, -lpthreads, or -lthread, look for -pthread
if("THREADS_HAVE_PTHREAD_ARG" MATCHES "^THREADS_HAVE_PTHREAD_ARG")
message(STATUS "Check if compiler accepts -pthread")
configure_file ("${CMAKE_CURRENT_LIST_DIR}/CheckForPthreads.cxx"
"${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CheckForPthreads.cxx" COPYONLY)
try_run(THREADS_PTHREAD_ARG THREADS_HAVE_PTHREAD_ARG
${CMAKE_BINARY_DIR}
${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CheckForPthreads.cxx
CMAKE_FLAGS "-DLINK_LIBRARIES:STRING=-pthread;-DCMAKE_CXX_FLAGS:STRING=-fpermissive"
COMPILE_OUTPUT_VARIABLE OUTPUT)
if(THREADS_HAVE_PTHREAD_ARG)
if(THREADS_PTHREAD_ARG STREQUAL "2")
set(Threads_FOUND TRUE)
message(STATUS "Check if compiler accepts -pthread - yes")
else()
message(STATUS "Check if compiler accepts -pthread - no")
file(APPEND
${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
"Determining if compiler accepts -pthread returned ${THREADS_PTHREAD_ARG} instead of 2. The compiler had the following output:\n${OUTPUT}\n\n")
endif()
else()
message(STATUS "Check if compiler accepts -pthread - no")
file(APPEND
${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
"Determining if compiler accepts -pthread failed with the following output:\n${OUTPUT}\n\n")
endif()
endif()
if(THREADS_HAVE_PTHREAD_ARG)
set(Threads_FOUND TRUE)
set(CMAKE_THREAD_LIBS_INIT "-pthread")
endif()
endif()
endif()
endif()
if(CMAKE_THREAD_LIBS_INIT OR CMAKE_HAVE_LIBC_CREATE)
set(CMAKE_USE_PTHREADS_INIT 1)
set(Threads_FOUND TRUE)
endif()
if(CMAKE_SYSTEM MATCHES "Windows")
set(CMAKE_USE_WIN32_THREADS_INIT 1)
set(Threads_FOUND TRUE)
endif()
if(CMAKE_USE_PTHREADS_INIT)
if(CMAKE_SYSTEM MATCHES "HP-UX-*")
# Use libcma if it exists and can be used. It provides more
# symbols than the plain pthread library. CMA threads
# have actually been deprecated:
# http://docs.hp.com/en/B3920-90091/ch12s03.html#d0e11395
# http://docs.hp.com/en/947/d8.html
# but we need to maintain compatibility here.
# The CMAKE_HP_PTHREADS setting actually indicates whether CMA threads
# are available.
CHECK_CXX_LIBRARY_EXISTS(cma pthread_attr_create "" CMAKE_HAVE_HP_CMA)
if(CMAKE_HAVE_HP_CMA)
set(CMAKE_THREAD_LIBS_INIT "-lcma")
set(CMAKE_HP_PTHREADS_INIT 1)
set(Threads_FOUND TRUE)
endif()
set(CMAKE_USE_PTHREADS_INIT 1)
endif()
if(CMAKE_SYSTEM MATCHES "OSF1-V*")
set(CMAKE_USE_PTHREADS_INIT 0)
set(CMAKE_THREAD_LIBS_INIT )
endif()
if(CMAKE_SYSTEM MATCHES "CYGWIN_NT*")
set(CMAKE_USE_PTHREADS_INIT 1)
set(Threads_FOUND TRUE)
set(CMAKE_THREAD_LIBS_INIT )
set(CMAKE_USE_WIN32_THREADS_INIT 0)
endif()
endif()
include(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(Threads DEFAULT_MSG Threads_FOUND)
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