There are serious problems from enabling LFS support like this in a
project like PHP.
If I have some library which uses off_t in its API, e.g. zlib, and I
happened to not compile it with LFS support, e.g. as in most Linux
distributions, I now *cannot* call the zlib functions using off_t from
PHP, because the size of off_t when you #include <zlib.h> will be
different from the size when zlib is compiled. Similar cases for any
SAPI module if the server interface exposes off_t.
The safe way of doing this which we use in APR 1.0 is to define a
wrapper type (e.g php_off_t) which is typedef'd to off64_t when
-D_LARGEFILE64_SOURCE is supported, and off_t otherwise, to open files
using O_LARGEFILE, and to use the "transitional LFS" functions like
lseek64 etc in place of lseek etc when php_off_t is off64_t.
----- Forwarded message from Edin Kadribasic <[EMAIL PROTECTED]> -----
From: "Edin Kadribasic" <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Date: Thu, 21 Oct 2004 23:57:39 -0000
Subject: [PHP-CVS] cvs: php-src(PHP_5_0) / configure.in
edink Thu Oct 21 19:57:39 2004 EDT
Modified files: (Branch: PHP_5_0)
/php-src configure.in
Log:
MFB: Linux LFS support, fixes 27792
http://cvs.php.net/diff.php/php-src/configure.in?r1=1.514.2.11&r2=1.514.2.12&ty=u
Index: php-src/configure.in
diff -u php-src/configure.in:1.514.2.11 php-src/configure.in:1.514.2.12
--- php-src/configure.in:1.514.2.11 Tue Sep 28 05:13:32 2004
+++ php-src/configure.in Thu Oct 21 19:57:37 2004
@@ -1,4 +1,4 @@
-dnl ## $Id: configure.in,v 1.514.2.11 2004/09/28 09:13:32 wez Exp $ -*- sh -*-
+dnl ## $Id: configure.in,v 1.514.2.12 2004/10/21 23:57:37 edink Exp $ -*- sh -*-
dnl ## Process this file with autoconf to produce a configure script.
divert(1)
@@ -196,6 +196,13 @@
LIBS="$LIBS -lbe -lroot";;
*mips*)
CPPFLAGS="$CPPFLAGS -D_XPG_IV";;
+*linux*)
+ AC_MSG_CHECKING([for Linux LFS_CFLAGS])
+ LFS_LINUX_CFLAGS=`getconf LFS_CFLAGS`
+ if test "x$LFS_LINUX_CFLAGS" != "x"; then
+ CFLAGS="$CFLAGS $LFS_LINUX_CFLAGS"
+ fi
+ AC_MSG_RESULT([$LFS_LINUX_CFLAGS])
esac
--
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