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Cache the check for Linux LFS support, so it can be prepopulated from
the site cache for configure variables for cross-compiling. Without this,
samba gets the idea that it can use dirent64 and friends without defining
the flags it needs to get it, such as _GNU_SOURCE and _LARGEFILE64_SOURCE.
Symptoms of getting the configuration wrong on cross-compile inculde
warnings such as
smbd/trans2.c: In function `get_lanman2_dir_entry':
smbd/trans2.c:1065: warning: right shift count >= width of type
and errors like
smbd/vfs.c:630: error: dereferencing pointer to incomplete type
(when trying to dereference dirent64.)
--- source/configure.in.orig 2005-05-29 14:46:18.000000000 -0700
+++ source/configure.in 2005-05-29 14:51:57.000000000 -0700
@@ -588,7 +588,7 @@
# Tests for linux LFS support. Need kernel 2.4 and glibc2.2 or greater support.
#
*linux*)
- AC_MSG_CHECKING([for LFS support])
+ AC_CACHE_CHECK([for LFS support], samba_cv_LINUX_LFS_SUPPORT,[
old_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="-D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE $CPPFLAGS"
AC_TRY_RUN([
@@ -627,15 +627,14 @@
exit(1);
#endif
}
-], [LINUX_LFS_SUPPORT=yes], [LINUX_LFS_SUPPORT=no], [LINUX_LFS_SUPPORT=cross])
- CPPFLAGS="$old_CPPFLAGS"
- if test x$LINUX_LFS_SUPPORT = xyes ; then
+], [samba_cv_LINUX_LFS_SUPPORT=yes], [samba_cv_LINUX_LFS_SUPPORT=no], [samba_cv_LINUX_LFS_SUPPORT=cross])
+ CPPFLAGS="$old_CPPFLAGS"])
+ if test x"$samba_cv_LINUX_LFS_SUPPORT" = x"yes" ; then
CPPFLAGS="-D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE $CPPFLAGS"
AC_DEFINE(_LARGEFILE64_SOURCE, 1, [Whether to enable large file support])
AC_DEFINE(_FILE_OFFSET_BITS, 64, [File offset bits])
AC_DEFINE(_GNU_SOURCE, 1, [Whether to use GNU libc extensions])
fi
- AC_MSG_RESULT([$LINUX_LFS_SUPPORT])
;;
#
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