diff --git a/CMakeLists.txt b/CMakeLists.txt
index 11f34690..ba130f50 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -311,8 +311,10 @@ if (${CMAKE_SYSTEM_NAME} MATCHES "Windows")
         ${OPENSSL_ROOT}/lib/ssleay32.lib
     )
 elseif (${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
-
-    if (IS_DIRECTORY /opt/local)
+    find_program(BREW_PROGRAM "brew")
+    find_program(PORT_PROGRAM "ports")
+    
+    if (IS_DIRECTORY /opt/local AND PORT_PROGRAM)
         # macports
         set (OPENSSL_ROOT /opt/local)
 
@@ -321,7 +323,7 @@ elseif (${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
             ${OPENSSL_ROOT}/lib/libcrypto.a
             z
         )
-    elseif (IS_DIRECTORY /usr/local/opt/openssl)
+    elseif (IS_DIRECTORY /usr/local/opt/openssl AND BREW_PROGRAM)
         # brew
         set (OPENSSL_ROOT /usr/local/opt/openssl)
 
diff --git a/dist/macos/bundle/reref_dylibs.sh b/dist/macos/bundle/reref_dylibs.sh
index 15191bd2..c06c7410 100755
--- a/dist/macos/bundle/reref_dylibs.sh
+++ b/dist/macos/bundle/reref_dylibs.sh
@@ -21,6 +21,8 @@ B_LIBS=$(otool -XL $B_TARGET | awk '{ print $1 }' | grep -Ev '^(/usr/lib|/System
 [ $? -ne 0 ] && exit 1
 for B_LIB in $B_LIBS; do
     B_LIB_NAME=$(basename $B_LIB)
+    # otool reports barrier as "barrier:" which fails self-reference test below
+    B_LIB_NAME=${B_LIB_NAME//:}
 
     # ignore self-references
     [ "$B_TARGET" = "$B_LIB_NAME" ] && continue