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| author | Brad King <brad.king@kitware.com> | 2006-08-25 20:07:06 (GMT) |
|---|---|---|
| committer | Brad King <brad.king@kitware.com> | 2006-08-25 20:07:06 (GMT) |
| commit | ebf532b106fed4bb4c2993be43e3ec2a42573f6b (patch) | |
| tree | 0a71d243169871464f8eb811482b6a53512f2235 /Source/kwsys | |
| parent | ffb1a9f80ad4e604c11c24a2f8769e93ba035ab3 (diff) | |
| download | CMake-ebf532b106fed4bb4c2993be43e3ec2a42573f6b.zip CMake-ebf532b106fed4bb4c2993be43e3ec2a42573f6b.tar.gz CMake-ebf532b106fed4bb4c2993be43e3ec2a42573f6b.tar.bz2 | |
ENH: Separate the notion of a request for LFS and its availability. Allow user code to block definitions of LFS macros. Added framework to give error if sys/types.h is included before this header when LFS is requested (currently disabled).
Diffstat (limited to 'Source/kwsys')
| -rw-r--r-- | Source/kwsys/Configure.h.in | 44 |
1 files changed, 35 insertions, 9 deletions
diff --git a/Source/kwsys/Configure.h.in b/Source/kwsys/Configure.h.in index ba4b99c..1afd416 100644 --- a/Source/kwsys/Configure.h.in +++ b/Source/kwsys/Configure.h.in @@ -22,18 +22,44 @@ # 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_LFS_AVAILABLE@ -# ifndef _LARGEFILE_SOURCE -# define _LARGEFILE_SOURCE +/* Whether Large File Support is requested. */ +#define @KWSYS_NAMESPACE@_LFS_REQUESTED @KWSYS_LFS_REQUESTED@ + +/* Whether Large File Support is available. */ +#if @KWSYS_NAMESPACE@_LFS_REQUESTED +# define @KWSYS_NAMESPACE@_LFS_AVAILABLE @KWSYS_LFS_AVAILABLE@ +#endif + +/* Setup Large File Support if requested. */ +#if @KWSYS_NAMESPACE@_LFS_REQUESTED + /* Since LFS is requested this header must be included before system + headers whether or not LFS is available. */ +# if 0 && (defined(_SYS_TYPES_H) || defined(_SYS_TYPES_INCLUDED)) +# error "@KWSYS_NAMESPACE@/Configure.h must be included before sys/types.h" +# endif + /* Enable the large file API if it is available. */ +# if @KWSYS_NAMESPACE@_LFS_AVAILABLE && \ + !defined(@KWSYS_NAMESPACE@_LFS_NO_DEFINES) +# if !defined(_LARGEFILE_SOURCE) && \ + !defined(@KWSYS_NAMESPACE@_LFS_NO_DEFINE_LARGEFILE_SOURCE) +# define _LARGEFILE_SOURCE # endif -# ifndef _LARGE_FILES -# define _LARGE_FILES +# if !defined(_LARGEFILE64_SOURCE) && \ + !defined(@KWSYS_NAMESPACE@_LFS_NO_DEFINE_LARGEFILE64_SOURCE) +# define _LARGEFILE64_SOURCE # endif -# ifndef _FILE_OFFSET_BITS -# define _FILE_OFFSET_BITS 64 +# if !defined(_LARGE_FILES) && \ + !defined(@KWSYS_NAMESPACE@_LFS_NO_DEFINE_LARGE_FILES) +# define _LARGE_FILES # endif +# if !defined(_FILE_OFFSET_BITS) && \ + !defined(@KWSYS_NAMESPACE@_LFS_NO_DEFINE_FILE_OFFSET_BITS) +# define _FILE_OFFSET_BITS 64 +# endif +# if defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS < 64 +# error "_FILE_OFFSET_BITS must be defined to at least 64" +# endif +# endif #endif /* Setup the export macro. */ |