1 From fc392c939b9a18959482f588aff0afc29dd6d30a Mon Sep 17 00:00:00 2001
2 From: Romain Naour <romain.naour at openwide.fr>
3 Date: Fri, 23 Jan 2015 22:20:18 +0100
4 Subject: [PATCH 6/6] unix/configure: borrow the LFS test from autotools.
6 Infozip's LFS check can't work for cross-compilation
7 since it try to run a target's binary on the host system.
9 Instead, use to LFS test used by autotools which is a
11 (see autotools/lib/autoconf/specific.m4)
13 Reported-by: Richard Genoud <richard.genoud at gmail.com>
14 Signed-off-by: Romain Naour <romain.naour at openwide.fr>
16 configure | 46 +++++++++++++++-------------------------------
17 1 file changed, 15 insertions(+), 31 deletions(-)
21 @@ -399,9 +399,8 @@ else
25 -# Now we set the 64-bit file environment and check the size of off_t
27 -# Revised 8/12/2004 EG
28 +# LFS check borrowed from autotools sources
29 +# lib/autoconf/specific.m4
31 echo Check for Large File Support
32 cat > conftest.c << _EOF_
33 @@ -410,23 +409,19 @@ cat > conftest.c << _EOF_
34 # define _FILE_OFFSET_BITS 64 /* select default interface as 64 bit */
35 # define _LARGE_FILES /* some OSes need this for 64-bit off_t */
36 #include <sys/types.h>
37 -#include <sys/stat.h>
41 + /* Check that off_t can represent 2**63 - 1 correctly.
42 + We can't simply define LARGE_OFF_T to be 9223372036854775807,
43 + since some C++ compilers masquerading as C compilers
44 + incorrectly reject 9223372036854775807. */
45 +#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
46 + int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
47 + && LARGE_OFF_T % 2147483647 == 1)
54 - /* see if have 64-bit off_t */
55 - if (sizeof(offset) < 8)
57 - printf(" off_t is %d bytes\n", sizeof(off_t));
58 - /* see if have 64-bit stat */
59 - if (sizeof(s.st_size) < 8) {
60 - printf(" s.st_size is %d bytes\n", sizeof(s.st_size));
68 @@ -434,19 +429,8 @@ $CC -o conftest conftest.c >/dev/null 2>
70 echo -- no Large File Support
75 - if [ $r -eq 1 ]; then
76 - echo -- no Large File Support - no 64-bit off_t
77 - elif [ $r -eq 2 ]; then
78 - echo -- no Large File Support - no 64-bit stat
79 - elif [ $r -eq 3 ]; then
80 - echo -- yes we have Large File Support!
81 - CFLAGS="${CFLAGS} -DLARGE_FILE_SUPPORT"
83 - echo -- no Large File Support - conftest returned $r
85 + echo -- yes we have Large File Support!
86 + CFLAGS="${CFLAGS} -DLARGE_FILE_SUPPORT"