--- CMakeLists.txt.orig	2009-10-06 20:51:08 UTC
+++ CMakeLists.txt
@@ -7,7 +7,7 @@
 ###
 
 # minimum version set to suppress project developer warning
-cmake_minimum_required(VERSION 2.4)
+cmake_minimum_required(VERSION 3.5)
 
 project(autopano-sift-C)
 
@@ -121,7 +121,7 @@ ADD_LIBRARY(libsift STATIC ${LIBSIFT_SOURCES})
 
 ADD_LIBRARY(libsift STATIC ${LIBSIFT_SOURCES})
 
-set(all_libs libsift ${JPEG_LIBRARIES} ${TIFF_LIBRARIES}
+set(all_libs libsift ${JPEG_LIBRARIES} ${TIFF_LIBRARIES} m
     ${PNG_LIBRARIES} ${ZLIB_LIBRARIES} ${PANO13_LIBRARIES} ${LIBXML2_LIBRARIES}) 
 
 add_executable(generatekeys GenerateKeys.c)