--- CMakeLists.txt.orig	2020-10-17 21:51:02 UTC
+++ CMakeLists.txt
@@ -64,7 +64,7 @@ set(DART_MINOR_VERSION "9")
 set(DART_PATCH_VERSION "5")
 set(DART_VERSION "${DART_MAJOR_VERSION}.${DART_MINOR_VERSION}.${DART_PATCH_VERSION}")
 set(DART_PKG_DESC "Dynamic Animation and Robotics Toolkit.")
-set(DART_PKG_EXTERNAL_DEPS "eigen, ccd, fcl, assimp, boost")
+set(DART_PKG_EXTERNAL_DEPS "eigen3, ccd, fcl, assimp")
 
 #===============================================================================
 # Build options
@@ -202,7 +202,7 @@ elseif(CMAKE_COMPILER_IS_GNUCXX)
   if(GCC_VERSION VERSION_LESS 5.3.1)
     message(FATAL_ERROR "The installed g++ version is ${GCC_VERSION}. ${PROJECT_NAME} requires g++ 5.3.1 or greater.")
   endif()
-  set(CMAKE_CXX_FLAGS_RELEASE "-O3 -DNDEBUG")
+  set(CMAKE_CXX_FLAGS_RELEASE "-DNDEBUG")
   set(CMAKE_CXX_FLAGS_DEBUG "-g -fno-omit-frame-pointer -fno-inline-functions -fno-inline-functions-called-once -fno-optimize-sibling-calls")
   if(DART_FAST_DEBUG)
     set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -O1")
@@ -228,7 +228,7 @@ elseif("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
   if("${CMAKE_SYSTEM_NAME}" MATCHES "Darwin")
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
   endif()
-  set(CMAKE_CXX_FLAGS_RELEASE "-O3 -DNDEBUG")
+  set(CMAKE_CXX_FLAGS_RELEASE "-DNDEBUG")
   set(CMAKE_CXX_FLAGS_DEBUG "-g -fno-omit-frame-pointer -fno-inline-functions -fno-optimize-sibling-calls")
   if(DART_FAST_DEBUG)
     set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -O1")
@@ -293,20 +293,20 @@ if(TARGET dart AND NOT DART_BUILD_DARTPY)
   if(MSVC)
     # add_subdirectory(examples)
   else()
-    add_subdirectory(examples EXCLUDE_FROM_ALL)
-    get_property(examples GLOBAL PROPERTY DART_EXAMPLES)
-    add_custom_target(examples DEPENDS ${examples})
+    #add_subdirectory(examples EXCLUDE_FROM_ALL)
+    #get_property(examples GLOBAL PROPERTY DART_EXAMPLES)
+    #add_custom_target(examples DEPENDS ${examples})
   endif()
 
   if(DART_VERBOSE)
     message(STATUS "")
     message(STATUS "[ Examples ]")
-    foreach(example ${examples})
-      message(STATUS "Adding example: ${example}")
-    endforeach(example ${examples})
-  else(DART_VERBOSE)
-    list(LENGTH examples examples_length)
-    message(STATUS "Adding ${examples_length} examples")
+    #foreach(example ${examples})
+    #  message(STATUS "Adding example: ${example}")
+    #endforeach(example ${examples})
+  #else(DART_VERBOSE)
+    #list(LENGTH examples examples_length)
+    #message(STATUS "Adding ${examples_length} examples")
   endif(DART_VERBOSE)
 
   # Add a "tutorials" target to build tutorials.