Переписан поиск флагов для поддержки больших файлов
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@ -1,5 +1,3 @@
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include(CMLibLargeFiles)
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set(COMMON_CXX_FEATURES
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cxx_alias_templates cxx_nullptr cxx_override)
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@ -10,10 +8,6 @@ function(common_target_properties Name)
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set(__interface 1)
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set(__visibility INTERFACE)
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endif()
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set(_FILE_OFFSET_BITS ON)
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set(_LARGEFILE_SOURCE ON)
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set(_LARGEFILE64_SOURCE ON)
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use_large_files(${Name} ON)
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target_compile_features(${Name} ${__visibility} ${COMMON_CXX_FEATURES})
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target_include_directories(${Name} PUBLIC
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$<INSTALL_INTERFACE:include>
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@ -1,4 +1,7 @@
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function(cmlib_config_hpp_generate)
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include(CMLibLargeFiles)
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cmlib_test_large_files(HAVE_LARGEFILES)
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get_property(VERSION_INT GLOBAL PROPERTY VERSION_INT)
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get_property(VERSION_STR GLOBAL PROPERTY VERSION_STR)
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get_property(ORGANIZATION_NAME GLOBAL PROPERTY ORGANIZATION_NAME)
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@ -1,107 +1,162 @@
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macro(test_large_files VARIABLE USE_64_SUFFIX)
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if(NOT DEFINED ${VARIABLE})
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message(STATUS "Checking if large (64-bit) file support is available...")
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#
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# This file is part of the GROMACS molecular simulation package.
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#
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# Copyright (c) 2009,2010,2012,2014,2019, by the GROMACS development team, led by
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# Mark Abraham, David van der Spoel, Berk Hess, and Erik Lindahl,
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# and including many others, as listed in the AUTHORS file in the
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# top-level source directory and at http://www.gromacs.org.
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#
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# GROMACS is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public License
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# as published by the Free Software Foundation; either version 2.1
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# of the License, or (at your option) any later version.
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#
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# GROMACS is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with GROMACS; if not, see
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# http://www.gnu.org/licenses, or write to the Free Software Foundation,
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# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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#
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# If you want to redistribute modifications to GROMACS, please
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# consider that scientific software is very special. Version
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# control is crucial - bugs must be traceable. We will be happy to
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# consider code for inclusion in the official distribution, but
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# derived work must not be called official GROMACS. Details are found
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# in the README & COPYING files - if they are missing, get the
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# official version at http://www.gromacs.org.
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#
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# To help us fund GROMACS development, we humbly ask that you cite
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# the research papers on the package. Check out http://www.gromacs.org.
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if(USE_64_SUFFIX)
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set(SUFFIX_64 "64")
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else(USE_64_SUFFIX)
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set(SUFFIX_64 "")
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endif(USE_64_SUFFIX)
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# Forked from Gromacs
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# First try without any macros defined
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try_compile(LARGE_FILES_SUPPORTED "${CMAKE_BINARY_DIR}"
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"${CMLIB_MODULE_DIR}/tests/LargeFiles${SUFFIX_64}.c"
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OUTPUT_VARIABLE TRY_LARGE_FILES_OUTPUT)
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# - Define macro to check large file support
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#
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# cmlib_test_large_files(VARIABLE)
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#
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# VARIABLE will be set to true if off_t is 64 bits, and fseeko/ftello present.
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# This macro will also set defines necessary enable large file support, for instance
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# _LARGE_FILES
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# _LARGEFILE_SOURCE
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# _FILE_OFFSET_BITS 64
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# HAVE_FSEEKO
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# HAVE__FSEEKI64
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#
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# However, it is YOUR job to make sure these defines are set in a cmakedefine so they
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# end up in a config.h file that is included in your source if necessary!
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if(VERBOSE_LARGE_FILES)
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message(STATUS "Large file output (no special flags):\n${TRY_LARGE_FILES_OUTPUT}")
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endif(VERBOSE_LARGE_FILES)
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include(CheckTypeSize)
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if(NOT LARGE_FILES_SUPPORTED)
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# Try with C macro _FILE_OFFSET_BITS=64
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try_compile(LARGE_FILES_SUPPORTED "${CMAKE_BINARY_DIR}"
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"${CMLIB_MODULE_DIR}/tests/LargeFiles${SUFFIX_64}.c"
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COMPILE_DEFINITIONS "-D_FILE_OFFSET_BITS=64"
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OUTPUT_VARIABLE TRY_LARGE_FILES_OUTPUT)
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MACRO(cmlib_test_large_files VARIABLE)
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IF(NOT DEFINED ${VARIABLE})
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if(VERBOSE_LARGE_FILES)
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message(STATUS "Large file output (_FILE_OFFSET_BITS=64):\n${TRY_LARGE_FILES_OUTPUT}")
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endif(VERBOSE_LARGE_FILES)
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# On most platforms it is probably overkill to first test the flags for 64-bit off_t,
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# and then separately fseeko. However, in the future we might have 128-bit filesystems
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# (ZFS), so it might be dangerous to indiscriminately set e.g. _FILE_OFFSET_BITS=64.
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if(LARGE_FILES_SUPPORTED)
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set(_FILE_OFFSET_BITS=64 CACHE INTERNAL "C macro _FILE_OFFSET_BITS=64 is required for 64-bit file support")
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endif(LARGE_FILES_SUPPORTED)
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endif(NOT LARGE_FILES_SUPPORTED)
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MESSAGE(STATUS "Checking for 64-bit off_t")
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if(NOT LARGE_FILES_SUPPORTED)
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# Try with C macro _LARGEFILE_SOURCE
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# First check without any special flags
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TRY_COMPILE(FILE64_OK "${CMAKE_BINARY_DIR}"
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"${CMLIB_MODULE_DIR}/tests/TestFileOffsetBits.c")
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if(FILE64_OK)
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MESSAGE(STATUS "Checking for 64-bit off_t - present")
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endif()
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try_compile(LARGE_FILES_SUPPORTED "${CMAKE_BINARY_DIR}"
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"${CMLIB_MODULE_DIR}/tests/LargeFiles${SUFFIX_64}.c"
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COMPILE_DEFINITIONS "-D_LARGEFILE${SUFFIX_64}_SOURCE"
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OUTPUT_VARIABLE TRY_LARGE_FILES_OUTPUT)
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if(NOT FILE64_OK)
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# Test with _FILE_OFFSET_BITS=64
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TRY_COMPILE(FILE64_OK "${CMAKE_BINARY_DIR}"
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"${CMLIB_MODULE_DIR}/tests/TestFileOffsetBits.c"
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COMPILE_DEFINITIONS "-D_FILE_OFFSET_BITS=64" )
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if(FILE64_OK)
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MESSAGE(STATUS "Checking for 64-bit off_t - present with _FILE_OFFSET_BITS=64")
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set(_FILE_OFFSET_BITS 64 CACHE INTERNAL "64-bit off_t requires _FILE_OFFSET_BITS=64")
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endif()
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endif()
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if(VERBOSE_LARGE_FILES)
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message(STATUS "Large file output (_LARGEFILE${SUFFIX_64}_SOURCE):\n${TRY_LARGE_FILES_OUTPUT}")
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endif(VERBOSE_LARGE_FILES)
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if(NOT FILE64_OK)
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# Test with _LARGE_FILES
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TRY_COMPILE(FILE64_OK "${CMAKE_BINARY_DIR}"
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"${CMLIB_MODULE_DIR}/tests/TestFileOffsetBits.c"
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COMPILE_DEFINITIONS "-D_LARGE_FILES" )
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if(FILE64_OK)
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MESSAGE(STATUS "Checking for 64-bit off_t - present with _LARGE_FILES")
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set(_LARGE_FILES 1 CACHE INTERNAL "64-bit off_t requires _LARGE_FILES")
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endif()
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endif()
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if(LARGE_FILES_SUPPORTED)
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set(_LARGEFILE${SUFFIX_64}_SOURCE=1 CACHE INTERNAL "C macro _LARGEFILE${SUFFIX_64}_SOURCE is required for 64-bit file support")
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endif(LARGE_FILES_SUPPORTED)
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endif(NOT LARGE_FILES_SUPPORTED)
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if(NOT FILE64_OK)
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# Test with _LARGEFILE_SOURCE
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TRY_COMPILE(FILE64_OK "${CMAKE_BINARY_DIR}"
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"${CMLIB_MODULE_DIR}/tests/TestFileOffsetBits.c"
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COMPILE_DEFINITIONS "-D_LARGEFILE_SOURCE" )
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if(FILE64_OK)
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MESSAGE(STATUS "Checking for 64-bit off_t - present with _LARGEFILE_SOURCE")
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set(_LARGEFILE_SOURCE 1 CACHE INTERNAL "64-bit off_t requires _LARGEFILE_SOURCE")
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endif()
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endif()
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if(NOT LARGE_FILES_SUPPORTED)
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# Try with both C macro _FILE_OFFSET_BITS=64 and _LARGEFILE_SOURCE
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try_compile(LARGE_FILES_SUPPORTED "${CMAKE_BINARY_DIR}"
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"${CMLIB_MODULE_DIR}/tests/LargeFiles${SUFFIX_64}.c"
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COMPILE_DEFINITIONS "-D_FILE_OFFSET_BITS=64" "-D_LARGEFILE${SUFFIX_64}_SOURCE"
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OUTPUT_VARIABLE TRY_LARGE_FILES_OUTPUT)
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if(NOT FILE64_OK)
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MESSAGE(STATUS "Checking for 64-bit off_t - not present")
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else()
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# 64-bit off_t found. Now check that ftello/fseeko is available.
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if(VERBOSE_LARGE_FILES)
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message(STATUS "Large file output (_FILE_OFFSET_BITS=64 and _LARGEFILE${SUFFIX_64}_SOURCE):\n${TRY_LARGE_FILES_OUTPUT}")
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endif(VERBOSE_LARGE_FILES)
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# Set the flags we might have determined to be required above
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configure_file("${CMLIB_MODULE_DIR}/tests/TestLargeFiles.c.in"
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"${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/TestLargeFiles.c")
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if(LARGE_FILES_SUPPORTED)
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set(_FILE_OFFSET_BITS=64 CACHE INTERNAL "C macro _FILE_OFFSET_BITS=64 is required for 64-bit file support")
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set(_LARGEFILE${SUFFIX_64}_SOURCE=1 CACHE INTERNAL "C macro _LARGEFILE${SUFFIX_64}_SOURCE is required for 64-bit file support")
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endif(LARGE_FILES_SUPPORTED)
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endif(NOT LARGE_FILES_SUPPORTED)
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MESSAGE(STATUS "Checking for fseeko/ftello")
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# Test if ftello/fseeko are available
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TRY_COMPILE(FSEEKO_COMPILE_OK "${CMAKE_BINARY_DIR}"
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"${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/TestLargeFiles.c")
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if(FSEEKO_COMPILE_OK)
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MESSAGE(STATUS "Checking for fseeko/ftello - present")
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endif()
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if(NOT LARGE_FILES_SUPPORTED)
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# Maybe we are using the Windows C standard library
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try_compile(LARGE_FILES_SUPPORTED "${CMAKE_BINARY_DIR}"
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"${CMLIB_MODULE_DIR}/tests/LargeFilesWindows.c")
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endif(NOT LARGE_FILES_SUPPORTED)
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if(NOT FSEEKO_COMPILE_OK)
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# glibc 2.2 neds _LARGEFILE_SOURCE for fseeko (but not 64-bit off_t...)
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TRY_COMPILE(FSEEKO_COMPILE_OK "${CMAKE_BINARY_DIR}"
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"${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/TestLargeFiles.c"
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COMPILE_DEFINITIONS "-D_LARGEFILE_SOURCE" )
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if(FSEEKO_COMPILE_OK)
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MESSAGE(STATUS "Checking for fseeko/ftello - present with _LARGEFILE_SOURCE")
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set(_LARGEFILE_SOURCE 1 CACHE INTERNAL "64-bit fseeko requires _LARGEFILE_SOURCE")
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else()
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set(FILE64_OK 0)
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message(STATUS "64-bit off_t present but fseeko/ftello not found!")
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endif()
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endif()
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endif()
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if(LARGE_FILES_SUPPORTED)
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message(STATUS "Checking if large (64-bit) file support is available - yes")
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set(${VARIABLE} 1 CACHE INTERNAL "Is large file support available?")
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else(LARGE_FILES_SUPPORTED)
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message(STATUS "Checking if large (64-bit) file support is available - no")
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set(${VARIABLE} 0 CACHE INTERNAL "Is large file support available?")
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endif(LARGE_FILES_SUPPORTED)
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endif(NOT DEFINED ${VARIABLE})
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endmacro(test_large_files VARIABLE USE_64_SUFFIX)
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if(NOT FILE64_OK)
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# now check for Windows stuff
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TRY_COMPILE(FILE64_OK "${CMAKE_BINARY_DIR}"
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"${CMLIB_MODULE_DIR}/tests/TestWindowsFSeek.c")
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if(FILE64_OK)
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MESSAGE(STATUS "Checking for 64-bit off_t - present with _fseeki64")
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set(HAVE__FSEEKI64 1 CACHE INTERNAL "64-bit off_t requires _fseeki64")
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endif()
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endif()
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macro(use_large_files TARGET USE_64_SUFFIX)
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test_large_files(USING_LARGE_FILES ${USE_64_SUFFIX})
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if(FSEEKO_COMPILE_OK)
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SET(${VARIABLE} 1 CACHE INTERNAL "Result of test for large file support" FORCE)
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set(HAVE_FSEEKO 1 CACHE INTERNAL "64bit fseeko is available" FORCE)
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elseif(HAVE__FSEEKI64)
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SET(${VARIABLE} 1 CACHE INTERNAL "Result of test for large file support" FORCE)
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SET(HAVE__FSEEKI64 1 CACHE INTERNAL "Windows 64-bit fseek" FORCE)
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else()
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check_type_size("long int" SIZEOF_LONG_INT)
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if(SIZEOF_LONG_INT EQUAL 8) #standard fseek is OK for 64bit
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SET(${VARIABLE} 1 CACHE INTERNAL "Result of test for large file support" FORCE)
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else()
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MESSAGE(FATAL_ERROR "Checking for 64bit file support failed.")
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endif()
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endif()
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if(USING_LARGE_FILES)
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if(DEFINED _FILE_OFFSET_BITS)
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set_property(TARGET ${TARGET}
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APPEND PROPERTY COMPILE_DEFINITIONS "_FILE_OFFSET_BITS=${_FILE_OFFSET_BITS}")
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endif(DEFINED _FILE_OFFSET_BITS)
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ENDIF()
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ENDMACRO(cmlib_test_large_files VARIABLE)
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if(DEFINED _LARGEFILE_SOURCE)
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set_property(TARGET ${TARGET}
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APPEND PROPERTY COMPILE_DEFINITIONS "_LARGEFILE_SOURCE")
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endif(DEFINED _LARGEFILE_SOURCE)
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if(DEFINED _LARGEFILE64_SOURCE)
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set_property(TARGET ${TARGET}
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APPEND PROPERTY COMPILE_DEFINITIONS "_LARGEFILE64_SOURCE")
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endif(DEFINED _LARGEFILE64_SOURCE)
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else(USING_LARGE_FILES)
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message(FATAL_ERROR "Large file support not available")
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endif(USING_LARGE_FILES)
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endmacro(use_large_files TARGET USE_64_SUFFIX)
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@ -12,5 +12,12 @@
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#cmakedefine RELEASE @RELEASE@
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#cmakedefine ANALYSIS @ANALYSIS@
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#cmakedefine _LARGEFILE_SOURCE
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#cmakedefine _LARGE_FILES
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#cmakedefine _FILE_OFFSET_BITS @_FILE_OFFSET_BITS@
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#cmakedefine HAVE_FSEEKO
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#cmakedefine HAVE__FSEEKI64
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#cmakedefine HAVE_LARGEFILES @HAVE_LARGEFILES@
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#endif /* @CMLIB_PROJECT_NAME_CANONICAL@_CONFIG_HPP_ */
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@ -1,15 +0,0 @@
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#include <sys/types.h>
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#include <stdio.h>
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#include <stdlib.h>
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#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
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#define VALID_ARRAY_LENGTH 1
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#define INVALID_ARRAY_LENGTH -1
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int main(int argc, const char **argv)
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{
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int a[(LARGE_OFF_T % 2147483629 == 721 && LARGE_OFF_T % 2147483647 == 1) ? VALID_ARRAY_LENGTH : INVALID_ARRAY_LENGTH];
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off_t offset = ftello(NULL);
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fseeko(NULL, offset, SEEK_SET);
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return 0;
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}
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@ -1,16 +0,0 @@
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#include <sys/types.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stddef.h>
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#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
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#define VALID_ARRAY_LENGTH 1
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#define INVALID_ARRAY_LENGTH -1
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int main(int argc, const char **argv)
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{
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int a[(LARGE_OFF_T % 2147483629 == 721 && LARGE_OFF_T % 2147483647 == 1) ? VALID_ARRAY_LENGTH : INVALID_ARRAY_LENGTH];
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off64_t offset = ftello64(NULL);
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fseeko64(NULL, offset, SEEK_SET);
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return 0;
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}
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@ -1,8 +0,0 @@
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#include <stdio.h>
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int main()
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{
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__int64 off = 0;
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_fseeki64(NULL, off, SEEK_SET);
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return 0;
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}
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11
tests/TestFileOffsetBits.c
Normal file
11
tests/TestFileOffsetBits.c
Normal file
@ -0,0 +1,11 @@
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#include <sys/types.h>
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/* Cause a compile-time error if off_t is smaller than 64 bits */
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#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
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int off_t_is_large[ (LARGE_OFF_T % 2147483629 == 721 && LARGE_OFF_T % 2147483647 == 1) ? 1 : -1 ];
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int main(int argc, char **argv)
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{
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return 0;
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}
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24
tests/TestLargeFiles.c.in
Normal file
24
tests/TestLargeFiles.c.in
Normal file
@ -0,0 +1,24 @@
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#cmakedefine _LARGEFILE_SOURCE
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#cmakedefine _LARGEFILE64_SOURCE
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#cmakedefine _LARGE_FILES
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#cmakedefine _FILE_OFFSET_BITS @_FILE_OFFSET_BITS@
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#include <sys/types.h>
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#include <stdio.h>
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#include <stdlib.h>
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int main(int argc, char **argv)
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{
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/* Cause a compile-time error if off_t is smaller than 64 bits,
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* and make sure we have ftello / fseeko.
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*/
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#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
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int off_t_is_large[ (LARGE_OFF_T % 2147483629 == 721 && LARGE_OFF_T % 2147483647 == 1) ? 1 : -1 ];
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FILE *fp = fopen(argv[0],"r");
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off_t offset = ftello( fp );
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fseeko( fp, offset, SEEK_CUR );
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fclose(fp);
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return off_t_is_large[0] || argc;
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}
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11
tests/TestWindowsFSeek.c
Normal file
11
tests/TestWindowsFSeek.c
Normal file
@ -0,0 +1,11 @@
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#include <stdio.h>
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int main()
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{
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__int64 off=0;
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_fseeki64(NULL, off, SEEK_SET);
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return 0;
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}
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