New CheckTypeSize for OS X Universal Binaries
We re-implement this module to support architecture-dependent type sizes. In the mixed-size case we generate C preprocessor code to select the detected type size for each architecture.
This commit is contained in:
Brad King
parent
6c9f678098
commit
c9b726c314
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@ -0,0 +1,37 @@
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@headers@
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#undef KEY
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#if defined(__i386)
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# define KEY '_','_','i','3','8','6'
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#elif defined(__x86_64)
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# define KEY '_','_','x','8','6','_','6','4'
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#elif defined(__ppc__)
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# define KEY '_','_','p','p','c','_','_'
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#elif defined(__ppc64__)
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# define KEY '_','_','p','p','c','6','4','_','_'
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#endif
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#define SIZE (sizeof(@type@))
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char info_size[] = {'I', 'N', 'F', 'O', ':', 's','i','z','e','[',
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('0' + ((SIZE / 10000)%10)),
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('0' + ((SIZE / 1000)%10)),
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('0' + ((SIZE / 100)%10)),
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('0' + ((SIZE / 10)%10)),
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('0' + (SIZE % 10)),
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']',
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#ifdef KEY
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' ','k','e','y','[', KEY, ']',
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#endif
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'\0'};
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#ifdef __CLASSIC_C__
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int main(argc, argv) int argc; char *argv[];
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#else
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int main(int argc, char *argv[])
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#endif
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{
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int require = 0;
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require += info_size[argc];
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(void)argv;
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return require;
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}
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@ -1,16 +1,29 @@
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# - Check sizeof a type
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# CHECK_TYPE_SIZE(TYPE VARIABLE [BUILTIN_TYPES_ONLY])
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# Check if the type exists and determine size of type. if the type
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# exists, the size will be stored to the variable. This also
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# calls check_include_file for sys/types.h stdint.h
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# and stddef.h, setting HAVE_SYS_TYPES_H, HAVE_STDINT_H,
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# and HAVE_STDDEF_H. This is because many types are stored
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# in these include files.
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# VARIABLE - variable to store size if the type exists.
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# HAVE_${VARIABLE} - does the variable exists or not
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# BUILTIN_TYPES_ONLY - The third argument is optional and if
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# it is set to the string BUILTIN_TYPES_ONLY
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# this macro will not check for any header files.
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# Check if the type exists and determine its size.
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# On return, "HAVE_${VARIABLE}" holds the existence of the type,
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# and "${VARIABLE}" holds one of the following:
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# <size> = type has non-zero size <size>
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# "0" = type has arch-dependent size (see below)
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# "" = type does not exist
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# Furthermore, the variable "${VARIABLE}_CODE" holds C preprocessor
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# code to define the macro "${VARIABLE}" to the size of the type, or
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# leave the macro undefined if the type does not exist.
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#
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# The variable "${VARIABLE}" may be "0" when CMAKE_OSX_ARCHITECTURES
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# has multiple architectures for building OS X universal binaries.
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# This indicates that the type size varies across architectures.
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# In this case "${VARIABLE}_CODE" contains C preprocessor tests
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# mapping from each architecture macro to the corresponding type size.
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# The list of architecture macros is stored in "${VARIABLE}_KEYS", and
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# the value for each key is stored in "${VARIABLE}-${KEY}".
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#
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# If the BUILTIN_TYPES_ONLY option is not given, the macro checks for
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# headers <sys/types.h>, <stdint.h>, and <stddef.h>, and saves results
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# in HAVE_SYS_TYPES_H, HAVE_STDINT_H, and HAVE_STDDEF_H. The type
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# size check automatically includes the available headers, thus
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# supporting checks of types defined in the headers.
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#
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# The following variables may be set before calling this macro to
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# modify the way the check is run:
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#
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@ -18,9 +31,7 @@
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# CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar)
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# CMAKE_REQUIRED_INCLUDES = list of include directories
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# CMAKE_REQUIRED_LIBRARIES = list of libraries to link
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# These variables are referenced in CheckTypeSizeC.c so we have
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# to check for them.
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# CMAKE_EXTRA_INCLUDE_FILES = list of extra headers to include
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#=============================================================================
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# Copyright 2002-2009 Kitware, Inc.
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@ -37,81 +48,144 @@
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include(CheckIncludeFile)
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MACRO(CHECK_TYPE_SIZE TYPE VARIABLE)
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IF(NOT "${ARGV2}" STREQUAL "BUILTIN_TYPES_ONLY")
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cmake_policy(PUSH)
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cmake_minimum_required(VERSION 2.6 FATAL_ERROR)
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get_filename_component(__check_type_size_dir "${CMAKE_CURRENT_LIST_FILE}" PATH)
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#-----------------------------------------------------------------------------
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# Helper function. DO NOT CALL DIRECTLY.
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function(__check_type_size_impl type var map builtin)
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message(STATUS "Check size of ${type}")
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# Include header files.
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set(headers)
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if(builtin)
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if(HAVE_SYS_TYPES_H)
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set(headers "${headers}#include <sys/types.h>\n")
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endif()
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if(HAVE_STDINT_H)
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set(headers "${headers}#include <stdint.h>\n")
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endif()
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if(HAVE_STDDEF_H)
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set(headers "${headers}#include <stddef.h>\n")
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endif()
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endif()
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foreach(h ${CMAKE_EXTRA_INCLUDE_FILES})
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set(headers "${headers}#include \"${h}\"\n")
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endforeach()
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# Perform the check.
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set(src ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CheckTypeSize/${var}.c)
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set(bin ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CheckTypeSize/${var}.bin)
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configure_file(${__check_type_size_dir}/CheckTypeSize.c.in ${src} @ONLY)
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try_compile(HAVE_${var} ${CMAKE_BINARY_DIR} ${src}
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COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
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CMAKE_FLAGS
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"-DCOMPILE_DEFINITIONS:STRING=${CMAKE_REQUIRED_FLAGS}"
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"-DINCLUDE_DIRECTORIES:STRING=${CMAKE_REQUIRED_INCLUDES}"
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"-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}"
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OUTPUT_VARIABLE output
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COPY_FILE ${bin}
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)
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if(HAVE_${var})
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# The check compiled. Load information from the binary.
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file(STRINGS ${bin} strings LIMIT_COUNT 10 REGEX "INFO:size")
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# Parse the information strings.
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set(regex_size ".*INFO:size\\[0*([^]]*)\\].*")
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set(regex_key " key\\[([^]]*)\\]")
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set(keys)
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set(code)
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set(mismatch)
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set(first 1)
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foreach(info ${strings})
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if("${info}" MATCHES "${regex_size}")
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# Get the type size.
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string(REGEX REPLACE "${regex_size}" "\\1" size "${info}")
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if(first)
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set(${var} ${size})
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elseif(NOT "${size}" STREQUAL "${${var}}")
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set(mismatch 1)
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endif()
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set(first 0)
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# Get the architecture map key.
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string(REGEX MATCH "${regex_key}" key "${info}")
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string(REGEX REPLACE "${regex_key}" "\\1" key "${key}")
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if(key)
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set(code "${code}\nset(${var}-${key} \"${size}\")")
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list(APPEND keys ${key})
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endif()
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endif()
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endforeach()
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# Update the architecture-to-size map.
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if(mismatch AND keys)
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configure_file(${__check_type_size_dir}/CheckTypeSizeMap.cmake.in ${map} @ONLY)
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set(${var} 0)
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else()
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file(REMOVE ${map})
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endif()
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if(mismatch AND NOT keys)
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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 !")
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endif()
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message(STATUS "Check size of ${type} - done")
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
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"Determining size of ${type} passed with the following output:\n${output}\n\n")
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set(${var} "${${var}}" CACHE INTERNAL "CHECK_TYPE_SIZE: sizeof(${type})")
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else(HAVE_${var})
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# The check failed to compile.
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message(STATUS "Check size of ${type} - failed")
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file(READ ${src} content)
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"Determining size of ${type} failed with the following output:\n${output}\n${src}:\n${content}\n\n")
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set(${var} "" CACHE INTERNAL "CHECK_TYPE_SIZE: ${type} unknown")
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file(REMOVE ${map})
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endif(HAVE_${var})
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endfunction()
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#-----------------------------------------------------------------------------
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macro(CHECK_TYPE_SIZE TYPE VARIABLE)
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# Optionally check for standard headers.
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if("${ARGV2}" STREQUAL "BUILTIN_TYPES_ONLY")
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set(_builtin 0)
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else()
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set(_builtin 1)
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check_include_file(sys/types.h HAVE_SYS_TYPES_H)
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check_include_file(stdint.h HAVE_STDINT_H)
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check_include_file(stddef.h HAVE_STDDEF_H)
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ENDIF(NOT "${ARGV2}" STREQUAL "BUILTIN_TYPES_ONLY")
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IF("HAVE_${VARIABLE}" MATCHES "^HAVE_${VARIABLE}$")
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MESSAGE(STATUS "Check size of ${TYPE}")
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SET(CHECK_TYPE_SIZE_TYPE "${TYPE}")
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SET(MACRO_CHECK_TYPE_SIZE_FLAGS
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"${CMAKE_REQUIRED_FLAGS}")
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FOREACH(def HAVE_SYS_TYPES_H HAVE_STDINT_H HAVE_STDDEF_H)
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IF("${def}")
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SET(MACRO_CHECK_TYPE_SIZE_FLAGS
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"${MACRO_CHECK_TYPE_SIZE_FLAGS} -D${def}")
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ENDIF("${def}")
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ENDFOREACH(def)
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SET(CHECK_TYPE_SIZE_PREINCLUDE)
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SET(CHECK_TYPE_SIZE_PREMAIN)
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SET(CHECK_TYPE_SIZE_ADD_LIBRARIES)
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SET(CHECK_TYPE_SIZE_ADD_INCLUDES)
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endif()
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FOREACH(def ${CMAKE_EXTRA_INCLUDE_FILES})
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SET(CHECK_TYPE_SIZE_PREMAIN "${CHECK_TYPE_SIZE_PREMAIN}#include \"${def}\"\n")
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ENDFOREACH(def)
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IF(CMAKE_REQUIRED_LIBRARIES)
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SET(CHECK_TYPE_SIZE_ADD_LIBRARIES
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"-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}")
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ENDIF(CMAKE_REQUIRED_LIBRARIES)
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IF(CMAKE_REQUIRED_INCLUDES)
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SET(CHECK_TYPE_SIZE_ADD_INCLUDES
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"-DINCLUDE_DIRECTORIES:STRING=${CMAKE_REQUIRED_INCLUDES}")
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ENDIF(CMAKE_REQUIRED_INCLUDES)
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# Compute or load the size or size map.
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set(${VARIABLE}_KEYS)
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set(_map_file ${CMAKE_BINARY_DIR}/${CMAKE_FILES_DIRECTORY}/CheckTypeSize/${VARIABLE}.cmake)
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if(NOT DEFINED HAVE_${VARIABLE})
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__check_type_size_impl(${TYPE} ${VARIABLE} ${_map_file} ${_builtin})
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endif()
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include(${_map_file} OPTIONAL)
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set(_map_file)
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set(_builtin)
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CONFIGURE_FILE("${CMAKE_ROOT}/Modules/CheckTypeSizeC.c.in"
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"${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckTypeSizeC.c" IMMEDIATE @ONLY)
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FILE(READ "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckTypeSizeC.c"
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CHECK_TYPE_SIZE_FILE_CONTENT)
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TRY_COMPILE(HAVE_${VARIABLE}
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${CMAKE_BINARY_DIR}
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"${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckTypeSizeC.c"
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COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
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CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_TYPE_SIZE_FLAGS}
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"${CHECK_TYPE_SIZE_ADD_LIBRARIES}"
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"${CHECK_TYPE_SIZE_ADD_INCLUDES}"
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OUTPUT_VARIABLE OUTPUT
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COPY_FILE "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CheckTypeSize.bin" )
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# Create preprocessor code.
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if(${VARIABLE}_KEYS)
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set(${VARIABLE}_CODE)
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set(_if if)
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foreach(key ${${VARIABLE}_KEYS})
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set(${VARIABLE}_CODE "${${VARIABLE}_CODE}#${_if} defined(${key})\n# define ${VARIABLE} ${${VARIABLE}-${key}}\n")
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set(_if elif)
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endforeach()
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set(${VARIABLE}_CODE "${${VARIABLE}_CODE}#else\n# error ${VARIABLE} unknown\n#endif")
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set(_if)
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elseif(${VARIABLE})
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set(${VARIABLE}_CODE "#define ${VARIABLE} ${${VARIABLE}}")
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else()
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set(${VARIABLE}_CODE "/* #undef ${VARIABLE} */")
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endif()
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endmacro()
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IF(HAVE_${VARIABLE})
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FILE(STRINGS "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CheckTypeSize.bin"
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CMAKE_CHECKTYPESIZE_STRINGS LIMIT_COUNT 2 REGEX "INFO:sizeof")
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SET(CMAKE_CHECKTYPESIZE_FIRST_RESULT "FIRST_LOOP")
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FOREACH(info ${CMAKE_CHECKTYPESIZE_STRINGS})
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IF("${info}" MATCHES ".*INFO:sizeof\\[0*([^]]*)\\].*")
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STRING(REGEX REPLACE ".*INFO:sizeof\\[0*([^]]*)\\].*" "\\1" ${VARIABLE} "${info}")
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ENDIF("${info}" MATCHES ".*INFO:sizeof\\[0*([^]]*)\\].*")
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IF("${CMAKE_CHECKTYPESIZE_FIRST_RESULT}" STREQUAL "FIRST_LOOP")
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SET(CMAKE_CHECKTYPESIZE_FIRST_RESULT "${${VARIABLE}}")
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ENDIF("${CMAKE_CHECKTYPESIZE_FIRST_RESULT}" STREQUAL "FIRST_LOOP")
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IF(NOT "${CMAKE_CHECKTYPESIZE_FIRST_RESULT}" STREQUAL "${${VARIABLE}}")
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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 !")
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ENDIF(NOT "${CMAKE_CHECKTYPESIZE_FIRST_RESULT}" STREQUAL "${${VARIABLE}}")
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ENDFOREACH(info ${CMAKE_CHECKTYPESIZE_STRINGS})
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MESSAGE(STATUS "Check size of ${TYPE} - done")
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FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
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"Determining size of ${TYPE} passed with the following output:\n${OUTPUT}\n\n")
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ELSE(HAVE_${VARIABLE})
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MESSAGE(STATUS "Check size of ${TYPE} - failed")
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FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"Determining size of ${TYPE} failed with the following output:\n${OUTPUT}\nCheckTypeSizeC.c:\n${CHECK_TYPE_SIZE_FILE_CONTENT}\n\n")
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SET(${VARIABLE})
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ENDIF(HAVE_${VARIABLE})
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SET(${VARIABLE} "${${VARIABLE}}" CACHE INTERNAL "Result of CHECK_TYPE_SIZE" FORCE)
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ENDIF("HAVE_${VARIABLE}" MATCHES "^HAVE_${VARIABLE}$")
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ENDMACRO(CHECK_TYPE_SIZE)
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#-----------------------------------------------------------------------------
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cmake_policy(POP)
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@ -1,48 +0,0 @@
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#cmakedefine CHECK_TYPE_SIZE_TYPE @CHECK_TYPE_SIZE_TYPE@
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#ifdef CHECK_TYPE_SIZE_TYPE
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@CHECK_TYPE_SIZE_PREINCLUDE@
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif /* HAVE_SYS_TYPES_H */
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#ifdef HAVE_STDINT_H
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# include <stdint.h>
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#endif /* HAVE_STDINT_H */
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#ifdef HAVE_STDDEF_H
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# include <stddef.h>
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#endif /* HAVE_STDDEF_H */
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@CHECK_TYPE_SIZE_PREMAIN@
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#ifdef __CLASSIC_C__
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# define const
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#endif
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#define SIZE (sizeof(@CHECK_TYPE_SIZE_TYPE@))
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const char info_sizeof[] = {'I', 'N', 'F', 'O', ':', 's','i','z','e','o','f','[',
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('0' + ((SIZE / 10000)%10)),
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('0' + ((SIZE / 1000)%10)),
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('0' + ((SIZE / 100)%10)),
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('0' + ((SIZE / 10)%10)),
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('0' + (SIZE % 10)),
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']','\0'};
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#ifdef __CLASSIC_C__
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int main(argc, argv) int argc; char *argv[];
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#else
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int main(int argc, char *argv[])
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#endif
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{
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int require = 0;
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require += info_sizeof[argc];
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(void)argv;
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return require;
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}
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#else /* CHECK_TYPE_SIZE_TYPE */
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# error "CHECK_TYPE_SIZE_TYPE has to specify the type"
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#endif /* CHECK_TYPE_SIZE_TYPE */
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@ -0,0 +1 @@
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set(@var@_KEYS "@keys@")@code@
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