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- From fc392c939b9a18959482f588aff0afc29dd6d30a Mon Sep 17 00:00:00 2001
- From: Romain Naour <romain.naour at openwide.fr>
- Date: Fri, 23 Jan 2015 22:20:18 +0100
- Subject: [PATCH 6/6] unix/configure: borrow the LFS test from autotools.
-
- Infozip's LFS check can't work for cross-compilation
- since it try to run a target's binary on the host system.
-
- Instead, use to LFS test used by autotools which is a
- compilation test.
- (see autotools/lib/autoconf/specific.m4)
-
- Reported-by: Richard Genoud <richard.genoud at gmail.com>
- Signed-off-by: Romain Naour <romain.naour at openwide.fr>
- ---
- configure | 46 +++++++++++++++-------------------------------
- 1 file changed, 15 insertions(+), 31 deletions(-)
-
- diff --rupN a/unix/configure b/unix/configure
- --- a/unix/configure
- +++ b/unix/configure
- @@ -399,9 +399,8 @@ else
- fi
-
-
- -# Now we set the 64-bit file environment and check the size of off_t
- -# Added 11/4/2003 EG
- -# Revised 8/12/2004 EG
- +# LFS check borrowed from autotools sources
- +# lib/autoconf/specific.m4
-
- echo Check for Large File Support
- cat > conftest.c << _EOF_
- @@ -410,23 +409,19 @@ cat > conftest.c << _EOF_
- # define _FILE_OFFSET_BITS 64 /* select default interface as 64 bit */
- # define _LARGE_FILES /* some OSes need this for 64-bit off_t */
- #include <sys/types.h>
- -#include <sys/stat.h>
- -#include <unistd.h>
- -#include <stdio.h>
- +
- + /* Check that off_t can represent 2**63 - 1 correctly.
- + We can't simply define LARGE_OFF_T to be 9223372036854775807,
- + since some C++ compilers masquerading as C compilers
- + incorrectly reject 9223372036854775807. */
- +#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
- + int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
- + && LARGE_OFF_T % 2147483647 == 1)
- + ? 1 : -1];
- +
- int main()
- {
- - off_t offset;
- - struct stat s;
- - /* see if have 64-bit off_t */
- - if (sizeof(offset) < 8)
- - return 1;
- - printf(" off_t is %d bytes\n", sizeof(off_t));
- - /* see if have 64-bit stat */
- - if (sizeof(s.st_size) < 8) {
- - printf(" s.st_size is %d bytes\n", sizeof(s.st_size));
- - return 2;
- - }
- - return 3;
- + return 0;
- }
- _EOF_
- # compile it
- @@ -434,19 +429,8 @@ $CC -o conftest conftest.c >/dev/null 2>
- if [ $? -ne 0 ]; then
- echo -- no Large File Support
- else
- -# run it
- - ./conftest
- - r=$?
- - if [ $r -eq 1 ]; then
- - echo -- no Large File Support - no 64-bit off_t
- - elif [ $r -eq 2 ]; then
- - echo -- no Large File Support - no 64-bit stat
- - elif [ $r -eq 3 ]; then
- - echo -- yes we have Large File Support!
- - CFLAGS="${CFLAGS} -DLARGE_FILE_SUPPORT"
- - else
- - echo -- no Large File Support - conftest returned $r
- - fi
- + echo -- yes we have Large File Support!
- + CFLAGS="${CFLAGS} -DLARGE_FILE_SUPPORT"
- fi
-
-
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