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ENH: Support large file systems in kwsys

This commit is contained in:
Andy Cedilnik 2006-08-22 15:34:14 -04:00
parent 211e991057
commit d510ef2557
4 changed files with 61 additions and 0 deletions
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17
Source/kwsys/CMakeLists.txt
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@ -241,6 +241,23 @@ IF(NOT KWSYS_IN_SOURCE_BUILD)
${PROJECT_BINARY_DIR}/kwsysPrivate.h COPY_ONLY IMMEDIATE)
ENDIF(NOT KWSYS_IN_SOURCE_BUILD)
IF("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" LESS 2.4)
MESSAGE(STATUS "Skip large files support because CMake is earlier than 2.4")
ELSE("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" LESS 2.4)
INCLUDE(CheckCXXSourceRuns)
FILE(READ "${CMAKE_CURRENT_SOURCE_DIR}/RequireLargeFilesSupport.cxx"
__kwsys_require_large_files_support)
CHECK_CXX_SOURCE_RUNS("${__kwsys_require_large_files_support}"
REQUIRE_LARGE_FILE_SUPPORT
"Support for 64 bit file systems")
IF(REQUIRE_LARGE_FILE_SUPPORT)
SET(KWSYS_REQUIRE_LARGE_FILE_SUPPORT 1)
ELSE(REQUIRE_LARGE_FILE_SUPPORT)
SET(KWSYS_REQUIRE_LARGE_FILE_SUPPORT 0)
ENDIF(REQUIRE_LARGE_FILE_SUPPORT)
ENDIF("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" LESS 2.4)
#-----------------------------------------------------------------------------
# We require ANSI support from the C compiler. Add any needed flags.
IF(CMAKE_ANSI_CFLAGS)

14
Source/kwsys/Configure.h.in
View File

@ -22,6 +22,20 @@
# define kwsysEXPORT @KWSYS_NAMESPACE@_EXPORT
#endif
/* This is a support for files on the disk that are larger than 2GB. Since
this is the first place that any include should happen, do this here. */
#if @KWSYS_REQUIRE_LARGE_FILE_SUPPORT@
# ifndef _LARGEFILE_SOURCE
# define _LARGEFILE_SOURCE
# endif
# ifndef _LARGE_FILES
# define _LARGE_FILES
# endif
# ifndef _FILE_OFFSET_BITS
# define _FILE_OFFSET_BITS 64
# endif
#endif
/* Setup the export macro. */
#if defined(_WIN32) && @KWSYS_BUILD_SHARED@
# if defined(@KWSYS_NAMESPACE@_EXPORTS)

28
Source/kwsys/RequireLargeFilesSupport.cxx Normal file
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@ -0,0 +1,28 @@
#define _LARGEFILE_SOURCE
#define _LARGE_FILES
#define _FILE_OFFSET_BITS 64
#include <sys/types.h>
#include <sys/stat.h>
#include <assert.h>
#include <stdio.h>
int main( int, char **argv )
{
// check that off_t can hold 2^63 - 1 and perform basic operations...
#define OFF_T_64 (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
if (OFF_T_64 % 2147483647 != 1)
return 1;
// stat breaks on SCO OpenServer
struct stat buf;
stat( argv[0], &buf );
if (!S_ISREG(buf.st_mode))
return 2;
FILE *file = fopen( argv[0], "r" );
off_t offset = ftello( file );
fseek( file, offset, SEEK_CUR );
fclose( file );
return 0;
}

2
bootstrap
View File

@ -279,6 +279,7 @@ cmake_kwsys_config_replace_string ()
cat "${INFILE}" |
sed "/./ {s/\@KWSYS_NAMESPACE\@/cmsys/g;
s/@KWSYS_BUILD_SHARED@/${KWSYS_BUILD_SHARED}/g;
s/@KWSYS_REQUIRE_LARGE_FILE_SUPPORT@/${KWSYS_REQUIRE_LARGE_FILE_SUPPORT}/g;
s/@KWSYS_NAME_IS_KWSYS@/${KWSYS_NAME_IS_KWSYS}/g;
s/@KWSYS_IOS_USE_ANSI@/${KWSYS_IOS_USE_ANSI}/g;
s/@KWSYS_IOS_HAVE_STD@/${KWSYS_IOS_HAVE_STD}/g;
@ -821,6 +822,7 @@ fi
# Test for kwsys features
KWSYS_NAME_IS_KWSYS=0
KWSYS_BUILD_SHARED=0
KWSYS_REQUIRE_LARGE_FILE_SUPPORT=0
KWSYS_IOS_USE_STRSTREAM_H=0
KWSYS_IOS_USE_STRSTREA_H=0
KWSYS_IOS_HAVE_STD=0