From ac7a1939511eda6b2baa1211fa5dcd12ec241fae Mon Sep 17 00:00:00 2001
From: Clinton Stimpson <clinton@elemtech.com>
Date: Thu, 5 Jul 2012 12:49:40 -0600
Subject: [PATCH] GetPrerequisites.cmake: detect executables built with the
 -pie linker flag.

---
 Modules/GetPrerequisites.cmake | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Modules/GetPrerequisites.cmake b/Modules/GetPrerequisites.cmake
index 8761f400f..d215685dd 100644
--- a/Modules/GetPrerequisites.cmake
+++ b/Modules/GetPrerequisites.cmake
@@ -195,6 +195,14 @@ function(is_file_executable file result_var)
           return()
         endif("${file_ov}" MATCHES "text")
       endif("${file_ov}" MATCHES "executable")
+
+      # Also detect position independent executables on Linux,
+      # where "file" gives "shared object ... (uses shared libraries)"
+      if("${file_ov}" MATCHES "shared object.*\(uses shared libs\)")
+        set(${result_var} 1 PARENT_SCOPE)
+        return()
+      endif()
+
     else(file_cmd)
       message(STATUS "warning: No 'file' command, skipping execute_process...")
     endif(file_cmd)