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Diffstat (limited to 'INSTALL')
| -rw-r--r-- | INSTALL | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/INSTALL b/INSTALL index f8200feff..e25ba08b2 100644 --- a/INSTALL +++ b/INSTALL @@ -202,6 +202,32 @@ Any startup/shutdown script can be disabled by giving the --disable-scriptname option to "configure". The --disable-etcdir option disables all startup/shutdown files which are not explicitely enabled. +Support for large files and integers +------------------------------------ + +Some 32-bit systems allow special compilation modes to get around the 2GB +file size barrier; the zsh support for this is still experimental, and +feedback is particularly appreciated. The option --enable-lfs turns on the +configure check for support for large files. Not all systems recognize the +test used by zsh (via the getconf command), so flags may need to be set by +hand, but --enable-lfs should be used in any case to compile in the code +for using 64 bit integers. On HP-UX 10.20, zsh has been successfully +compiled with large file support by configuring with + CC="cc -Ae" CPPFLAGS="-D_LARGEFILE_SOURCE -D_FILE64" configure \ + --enable-lfs ... +You can also give a value to --enable-lfs, which will be interpreted as the +name of a 64-bit integer type, for example --enable-lfs="long long" +(although this type is checked for anyway). + +Furthermore, use of --enable-lfs will also enable 64-bit arithmetic for +shell parameters, and anywhere they are used such as in mathematical +formulae. This depends only on the shell finding a suitable 64-bit integer +type; it does not require that support for large files is actually +enabled. Hence you might consider using --enable-lfs on any 32-bit system +with a suitable compiler such as gcc. + +None of this is relevant for 64-bit systems; zsh should compile and run +without problems if (sizeof(long) == 8). Options For Configure --------------------- @@ -244,3 +270,4 @@ Features: zprofile=pathname # the full pathname of the global zprofile script zlogout=pathname # the full pathname of the global zlogout script dynamic # allow dynamically loaded binary modules + lfs # allow configure check for large files |