1 files changed, 42 insertions, 0 deletions
diff --git a/config.tests/unix/largefile/ConfigureChecks.cmake b/config.tests/unix/largefile/ConfigureChecks.cmake
new file mode 100644
index 000000000..4e0cc4c5d
--- /dev/null
+++ b/config.tests/unix/largefile/ConfigureChecks.cmake
@@ -0,0 +1,42 @@
+###########################################
+#                                         #
+#  Improvements and feedback are welcome  #
+#                                         #
+#  This file is released under GPL >= 3   #
+#                                         #
+###########################################
+
+
+##### check for large file support
+
+check_cxx_source_compiles("
+#define _LARGEFILE_SOURCE
+#define _LARGE_FILES
+#define _FILE_OFFSET_BITS 64
+
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <assert.h>
+#include <stdio.h>
+
+int main( int, char **argv )
+{
+// check that off_t can hold 2^63 - 1 and perform basic operations...
+#define OFF_T_64 (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
+    if (OFF_T_64 % 2147483647 != 1)
+	return 1;
+
+    // stat breaks on SCO OpenServer
+    struct stat buf;
+    stat( argv[0], &buf );
+    if (!S_ISREG(buf.st_mode))
+	return 2;
+
+    FILE *file = fopen( argv[0], \"r\" );
+    off_t offset = ftello( file );
+    fseek( file, offset, SEEK_CUR );
+    fclose( file );
+    return 0;
+}"
+QT_LARGEFILE_SUPPORT)