forked from osmocom/wireshark
f749a64280
Without this change large file support was detected as available even when it was not without additional flags on 32 architectures. As a result mergecap and other programs are built without large file support causing mergecap not being able to write files bigger than 2GB on i386 systems. This used to work properly with autotools builds, but not with CMake ones. Change-Id: Ibfd043342b2a48310d2ac9d760e6404a701c5808 Reviewed-on: https://code.wireshark.org/review/15937 Petri-Dish: Balint Reczey <balint@balintreczey.hu> Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org> Reviewed-by: Balint Reczey <balint@balintreczey.hu>
41 lines
1,001 B
Text
41 lines
1,001 B
Text
/*
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* and its toplevel COPYING file starts with:
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*
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* GROMACS is free software, distributed under the GNU General Public License
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* (GPL) Version 2.
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*/
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#cmakedefine _LARGEFILE_SOURCE
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#cmakedefine _LARGEFILE64_SOURCE
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#cmakedefine _LARGE_FILES
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#cmakedefine _FILE_OFFSET_BITS @_FILE_OFFSET_BITS@
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/* detect failure even with -Wno-error on command line */
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#pragma GCC diagnostic error "-Werror"
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#include <sys/types.h>
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#include <stdio.h>
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#include <stdlib.h>
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int main(int argc, char **argv)
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{
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/* Cause a compile-time error if off_t is smaller than 64 bits,
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* and make sure we have ftello / fseeko.
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*/
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#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
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int off_t_is_large[ (LARGE_OFF_T % 2147483629 == 721 && LARGE_OFF_T % 2147483647 == 1) ? 1 : -1 ];
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/* silence unused warnings */
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FILE *fp;
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off_t offset;
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(void)off_t_is_large;
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(void)argc;
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(void)argv;
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fp = fopen(argv[0],"r");
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offset = ftello( fp );
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fseeko( fp, offset, SEEK_CUR );
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fclose(fp);
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return 0;
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}
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