Improve openssl directory finding

Builds/CMake/CMakeFuncs.cmake

@@ -294,10 +294,13 @@ macro(find_pthread)
 endmacro()
 
 macro(find_openssl openssl_min)
-  if (APPLE)
-    # swd TBD fixme
-    file(GLOB OPENSSL_ROOT_DIR /usr/local/Cellar/openssl/*)
-    # set(OPENSSL_ROOT_DIR /usr/local/Cellar/openssl)
+  if (APPLE AND NOT DEFINED ENV{OPENSSL_ROOT_DIR})
+    find_program(HOMEBREW brew)
+    if (NOT HOMEBREW STREQUAL "HOMEBREW-NOTFOUND")
+      execute_process(COMMAND brew --prefix openssl
+        OUTPUT_VARIABLE OPENSSL_ROOT_DIR
+        OUTPUT_STRIP_TRAILING_WHITESPACE)
+    endif()
   endif()
 
   if (WIN32)

SConstruct

@@ -385,11 +385,13 @@ def config_base(env):
         except KeyError:
             pass
     elif Beast.system.osx:
-        OSX_OPENSSL_ROOT = '/usr/local/Cellar/openssl/'
-        most_recent = sorted(os.listdir(OSX_OPENSSL_ROOT))[-1]
-        openssl = os.path.join(OSX_OPENSSL_ROOT, most_recent)
+        try:
+            openssl = subprocess.check_output(['brew', '--prefix','openssl'],
+                                              stderr=subprocess.STDOUT).strip()
             env.Prepend(CPPPATH='%s/include' % openssl)
             env.Prepend(LIBPATH=['%s/lib' % openssl])
+        except:
+            pass
         if not 'vcxproj' in COMMAND_LINE_TARGETS:
             env.Append(CPPDEFINES=['NO_LOG_UNHANDLED_EXCEPTIONS'])