+#
+# This file is part of the GROMACS molecular simulation package.
+#
+# Copyright (c) 2009,2010,2012,2014, by the GROMACS development team, led by
+# Mark Abraham, David van der Spoel, Berk Hess, and Erik Lindahl,
+# and including many others, as listed in the AUTHORS file in the
+# top-level source directory and at http://www.gromacs.org.
+#
+# GROMACS is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public License
+# as published by the Free Software Foundation; either version 2.1
+# of the License, or (at your option) any later version.
+#
+# GROMACS is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with GROMACS; if not, see
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+#
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+# the research papers on the package. Check out http://www.gromacs.org.
+
# - Define macro to check large file support
#
# GMX_TEST_LARGE_FILES(VARIABLE)
# This macro will also set defines necessary enable large file support, for instance
# _LARGE_FILES
# _LARGEFILE_SOURCE
-# _FILE_OFFSET_BITS 64
-# HAVE_FSEEKO
+# _FILE_OFFSET_BITS 64
#
# However, it is YOUR job to make sure these defines are set in a cmakedefine so they
# end up in a config.h file that is included in your source if necessary!
+include(CheckTypeSize)
+
MACRO(GMX_TEST_LARGE_FILES VARIABLE)
- IF("HAVE_${VARIABLE}" MATCHES "^HAVE_${VARIABLE}$")
+ IF(NOT DEFINED ${VARIABLE})
# On most platforms it is probably overkill to first test the flags for 64-bit off_t,
# and then separately fseeko. However, in the future we might have 128-bit filesystems
MESSAGE(STATUS "Checking for 64-bit off_t")
- # First check without any special flags
- TRY_COMPILE(FILE64_OK "${CMAKE_BINARY_DIR}"
+ # First check without any special flags
+ TRY_COMPILE(FILE64_OK "${CMAKE_BINARY_DIR}"
"${CMAKE_SOURCE_DIR}/cmake/TestFileOffsetBits.c")
if(FILE64_OK)
- MESSAGE(STATUS "Checking for 64-bit off_t - present")
- endif(FILE64_OK)
+ MESSAGE(STATUS "Checking for 64-bit off_t - present")
+ endif()
- if(NOT FILE64_OK)
- # Test with _FILE_OFFSET_BITS=64
+ if(NOT FILE64_OK)
+ # Test with _FILE_OFFSET_BITS=64
TRY_COMPILE(FILE64_OK "${CMAKE_BINARY_DIR}"
"${CMAKE_SOURCE_DIR}/cmake/TestFileOffsetBits.c"
COMPILE_DEFINITIONS "-D_FILE_OFFSET_BITS=64" )
if(FILE64_OK)
- MESSAGE(STATUS "Checking for 64-bit off_t - present with _FILE_OFFSET_BITS=64")
- set(_FILE_OFFSET_BITS 64)
- endif(FILE64_OK)
- endif(NOT FILE64_OK)
+ MESSAGE(STATUS "Checking for 64-bit off_t - present with _FILE_OFFSET_BITS=64")
+ set(_FILE_OFFSET_BITS 64 CACHE INTERNAL "64-bit off_t requires _FILE_OFFSET_BITS=64")
+ endif()
+ endif()
if(NOT FILE64_OK)
# Test with _LARGE_FILES
COMPILE_DEFINITIONS "-D_LARGE_FILES" )
if(FILE64_OK)
MESSAGE(STATUS "Checking for 64-bit off_t - present with _LARGE_FILES")
- set(_LARGE_FILES 1)
- endif(FILE64_OK)
- endif(NOT FILE64_OK)
-
+ set(_LARGE_FILES 1 CACHE INTERNAL "64-bit off_t requires _LARGE_FILES")
+ endif()
+ endif()
+
if(NOT FILE64_OK)
# Test with _LARGEFILE_SOURCE
TRY_COMPILE(FILE64_OK "${CMAKE_BINARY_DIR}"
COMPILE_DEFINITIONS "-D_LARGEFILE_SOURCE" )
if(FILE64_OK)
MESSAGE(STATUS "Checking for 64-bit off_t - present with _LARGEFILE_SOURCE")
- set(_LARGEFILE_SOURCE 1)
- endif(FILE64_OK)
- endif(NOT FILE64_OK)
+ set(_LARGEFILE_SOURCE 1 CACHE INTERNAL "64-bit off_t requires _LARGEFILE_SOURCE")
+ endif()
+ endif()
if(NOT FILE64_OK)
MESSAGE(STATUS "Checking for 64-bit off_t - not present")
- else(NOT FILE64_OK)
+ else()
+ # 64-bit off_t found. Now check that ftello/fseeko is available.
# Set the flags we might have determined to be required above
- configure_file("${CMAKE_SOURCE_DIR}/cmake/TestLargeFiles.c.cmakein"
+ configure_file("${CMAKE_SOURCE_DIR}/cmake/TestLargeFiles.c.cmakein"
"${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/TestLargeFiles.c")
- MESSAGE(STATUS "Checking for fseeko/ftello")
- # Test if ftello/fseeko are available
- TRY_COMPILE(HAVE_${VARIABLE} "${CMAKE_BINARY_DIR}"
+ MESSAGE(STATUS "Checking for fseeko/ftello")
+ # Test if ftello/fseeko are available
+ TRY_COMPILE(FSEEKO_COMPILE_OK "${CMAKE_BINARY_DIR}"
"${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/TestLargeFiles.c")
- if(HAVE_${VARIABLE})
+ if(FSEEKO_COMPILE_OK)
MESSAGE(STATUS "Checking for fseeko/ftello - present")
- endif(HAVE_${VARIABLE})
+ endif()
- if(NOT HAVE_${VARIABLE})
+ if(NOT FSEEKO_COMPILE_OK)
# glibc 2.2 neds _LARGEFILE_SOURCE for fseeko (but not 64-bit off_t...)
- TRY_COMPILE(HAVE_${VARIABLE} "${CMAKE_BINARY_DIR}"
+ TRY_COMPILE(FSEEKO_COMPILE_OK "${CMAKE_BINARY_DIR}"
"${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/TestLargeFiles.c"
COMPILE_DEFINITIONS "-D_LARGEFILE_SOURCE" )
- if(HAVE_${VARIABLE})
+ if(FSEEKO_COMPILE_OK)
MESSAGE(STATUS "Checking for fseeko/ftello - present with _LARGEFILE_SOURCE")
- set(_LARGEFILE_SOURCE 1)
- endif(HAVE_${VARIABLE})
- endif(NOT HAVE_${VARIABLE})
+ set(_LARGEFILE_SOURCE 1 CACHE INTERNAL "64-bit fseeko requires _LARGEFILE_SOURCE")
+ else()
+ set(FILE64_OK 0)
+ message(STATUS "64-bit off_t present but fseeko/ftello not found!")
+ endif()
+ endif()
+ endif()
+
+ if(NOT FILE64_OK)
+ # now check for Windows stuff
+ TRY_COMPILE(FILE64_OK "${CMAKE_BINARY_DIR}"
+ "${CMAKE_SOURCE_DIR}/cmake/TestWindowsFSeek.c")
+ if(FILE64_OK)
+ MESSAGE(STATUS "Checking for 64-bit off_t - present with _fseeki64")
+ set(HAVE__FSEEKI64 1 CACHE INTERNAL "64-bit off_t requires _fseeki64")
+ endif()
+ endif()
- if(HAVE_${VARIABLE})
+ if(FSEEKO_COMPILE_OK)
+ SET(${VARIABLE} 1 CACHE INTERNAL "Result of test for large file support" FORCE)
+ set(HAVE_FSEEKO 1 CACHE INTERNAL "64bit fseeko is available" FORCE)
+ elseif(HAVE__FSEEKI64)
+ SET(${VARIABLE} 1 CACHE INTERNAL "Result of test for large file support" FORCE)
+ SET(HAVE__FSEEKI64 1 CACHE INTERNAL "Windows 64-bit fseek" FORCE)
+ else()
+ check_type_size("long int" SIZEOF_LONG_INT)
+ if(SIZEOF_LONG_INT EQUAL 8) #standard fseek is OK for 64bit
SET(${VARIABLE} 1 CACHE INTERNAL "Result of test for large file support" FORCE)
- set(HAVE_FSEEKO 1)
- else(HAVE_${VARIABLE})
- MESSAGE(STATUS "Checking for fseeko/ftello - not found")
- SET(${VARIABLE} 0 CACHE INTERNAL "Result of test for large file support" FORCE)
- endif(HAVE_${VARIABLE})
-
- endif(NOT FILE64_OK)
-
- ENDIF("HAVE_${VARIABLE}" MATCHES "^HAVE_${VARIABLE}$")
+ else()
+ MESSAGE(FATAL_ERROR "Checking for 64bit file support failed.")
+ endif()
+ endif()
+
+ ENDIF()
ENDMACRO(GMX_TEST_LARGE_FILES VARIABLE)
biod.pnpi.spb.ru / alexxy / gromacs.git / blobdiff