diff --git a/bigmac/BigMacConfig.cmake.in b/bigmac/BigMacConfig.cmake.in
index 1484c89..a155887 100644
--- a/bigmac/BigMacConfig.cmake.in
+++ b/bigmac/BigMacConfig.cmake.in
@@ -30,15 +30,15 @@ set(OUTDATED "You are not using the latest version of")
 set(SUGGEST "You can continue your build, but if you experience problems \
     you may want to consider updating.")
 
-if(NOT BigMac_MACOS STREQUAL @MACOS_LATEST@)
+if(BigMac_MACOS VERSION_LESS @MACOS_LATEST@)
   message(WARNING "${OUTDATED} macOS (@MACOS_LATEST@). ${SUGGEST}")
 endif()
 
-if(NOT BigMac_DARWIN STREQUAL @DARWIN_LATEST@)
+if(BigMac_DARWIN VERSION_LESS @DARWIN_LATEST@)
   message(WARNING "${OUTDATED} Darwin (@DARWIN_LATEST@). ${SUGGEST}")
 endif()
 
-if(NOT BigMac_XCODE STREQUAL @XCODE_LATEST@)
+if(BigMac_XCODE VERSION_LESS @XCODE_LATEST@)
   message(WARNING "${OUTDATED} XCode (@XCODE_LATEST@). ${SUGGEST}")
 endif()
 
diff --git a/bigmac/CMakeLists.txt b/bigmac/CMakeLists.txt
index e3955d6..d238f90 100644
--- a/bigmac/CMakeLists.txt
+++ b/bigmac/CMakeLists.txt
@@ -11,7 +11,7 @@ set(BIGMAC_VERSION
 # Set latest version of macOS system
 set(MACOS_LATEST "10.15.6")
 set(DARWIN_LATEST "19.6.0")
-set(XCODE_LATEST "11.6")
+set(XCODE_LATEST "11.7")
 
 export(PACKAGE bigmac)
 
@@ -33,3 +33,6 @@ list(TRANSFORM BIGMAC_TARGETS PREPEND "${CMAKE_BINARY_DIR}/${CMAKE_PROJECT_NAME}
 
 # Install CMake configuration files
 install(FILES ${BIGMAC_TARGETS} DESTINATION ${INSTALL_CMAKE_DIR})
+
+# Create dummy file so that CMake can find FFTW
+file(TOUCH "/usr/local/lib/cmake/fftw3/FFTW3LibraryDepends.cmake")