Replace the Large File Support CMake stuff.

The existing stuff doesn't appear to work (I tried it on 32-bit Ubuntu
18.04, and it did *not* add any flags to the compilation, as it appeared
not to conclude that they were necessary, even though they were).

Pull in the stuff from libpcap, which *does* appear to work.  (it does
so in my 32-bit Ubuntu testing).

This should fix #17301.

While we're at it, fix cppcheck.sh so that it doesn't attempt to run
cppcheck on files that have been deleted.

1 files changed, 0 insertions, 24 deletions

diff --git a/cmake/TestFileOffsetBits.c b/cmake/TestFileOffsetBits.c
deleted file mode 100644
index 882abb4cfc..0000000000
--- a/cmake/TestFileOffsetBits.c
+++ /dev/null
@@ -1,24 +0,0 @@
-/*
- * This code was copied from http://www.gromacs.org/
- * and its toplevel COPYING file starts with:
- *
- * GROMACS is free software, distributed under the GNU General Public License
- * (GPL) Version 2.
- */
-
-#include <sys/types.h>
-
-/* detect failure even with -Wno-error on command line */
-#pragma GCC diagnostic error "-Werror"
-
-int main(int argc, char **argv)
-{
-  /* Cause a compile-time error if off_t is smaller than 64 bits */
-#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 ];
-  /* silence unused errors */
-  (void)off_t_is_large;
-  (void)argc;
-  (void)argv;
-  return 0;
-}