Fixed detecting and using the fallocate() function.

docs/Changelog

@@ -52,6 +52,9 @@ Version 2.3.0 - The river knows.
 	morph:
 		* Patch to uniform and fix minor errors on man pages
 
+	mr_hyde:
+		* Fixed a bug in detecting and using the fallocate() function.
+
 	myth:
 		* Feedback from shared files - add number of clients on queue.
 

m4/fallocate.m4

@@ -25,8 +25,14 @@
 AC_DEFUN([MULE_CHECK_FALLOCATE],
 [
 	AC_MSG_CHECKING([for fallocate])
+	MULE_BACKUP([CPPFLAGS])
+	MULE_APPEND([CPPFLAGS], [$WX_CPPFLAGS])
 	AC_LINK_IFELSE([
 		AC_LANG_PROGRAM([[
+			#define _GNU_SOURCE
+			#ifdef HAVE_FCNTL_H
+			#  include <fcntl.h>
+			#endif
 			#include <linux/falloc.h>
 		]], [[
 			fallocate(0, 0, 0, 0);
@@ -38,12 +44,13 @@ AC_DEFUN([MULE_CHECK_FALLOCATE],
 	], [
 		AC_MSG_RESULT([no])
 	])
+	MULE_RESTORE([CPPFLAGS])
 
 
 	AC_MSG_CHECKING([for SYS_fallocate])
 	AC_LINK_IFELSE([
 		AC_LANG_PROGRAM([[
-			#include <sys/sycall.h>
+			#include <sys/syscall.h>
 			#include <sys/types.h>
 			#include <unistd.h>
 		]], [[

src/ThreadTasks.cpp

@@ -37,6 +37,9 @@
 #include "ScopedPtr.h"			// Needed for CScopedPtr and CScopedArray
 #include "PlatformSpecific.h"		// Needed for CanFSHandleSpecialChars
 
+#ifdef HAVE_CONFIG_H
+#	include "config.h"
+#endif
 
 //! This hash represents the value for an empty MD4 hashing
 const byte g_emptyMD4Hash[16] = {
@@ -485,6 +488,10 @@ void CCompletionTask::OnExit()
 // CAllocateFileTask
 
 #ifdef HAVE_FALLOCATE
+#	define _GNU_SOURCE
+#	ifdef HAVE_FCNTL_H
+#		include <fcntl.h>
+#	endif
 #	include <linux/falloc.h>
 #elif defined HAVE_SYS_FALLOCATE
 #	include <sys/syscall.h>