On linux don't compile and link against lzo, soil, and sfml "Externals."

Instead use system libraries liblzo2-dev, libsoil-dev, and libsfml-dev


git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@5105 8ced0084-cf51-0410-be5f-012b33b47a6e

SConstruct

@@ -50,10 +50,7 @@ include_paths = [
     basedir + 'Source/Core/Core/Src',
     basedir + 'Source/Core/DebuggerWX/Src',
     basedir + 'Externals/Bochs_disasm',
-    basedir + 'Externals/LZO',
-    basedir + 'Externals/SOIL',
     basedir + 'Externals/Lua',
-    basedir + 'Externals/SFML/include',
     basedir + 'Externals/WiiUseSrc/Src',
     basedir + 'Source/Core/VideoCommon/Src',
     basedir + 'Source/Core/InputCommon/Src',
@@ -62,11 +59,15 @@ include_paths = [
     basedir + 'Source/Core/DSPCore/Src',
     ]
 
+if sys.platform == 'darwin':
+    include_paths += [
+        basedir + 'Externals/LZO', # TODO:  Macs have port of lzo, use that instead
+        basedir + 'Externals/SOIL',
+        basedir + 'Externals/SFML/include',
+        ]
+
 dirs = [
     'Externals/Bochs_disasm',
-    'Externals/LZO',
-    'Externals/SOIL',
-    'Externals/SFML/src',
     'Externals/Lua',
     'Externals/WiiUseSrc/Src', 
     'Source/Core/Common/Src',
@@ -88,6 +89,13 @@ dirs = [
     'Source/Core/DebuggerWX/Src',
     ]
 
+if sys.platform == 'darwin':
+    dirs += [
+        'Externals/LZO', # TODO:  Macs have port of lzo, use that instead
+        'Externals/SOIL',
+        'Externals/SFML/src',
+        ]
+
 builders = {}
 if sys.platform == 'darwin':
     from plistlib import writePlist
@@ -338,7 +346,13 @@ if sys.platform == 'darwin':
 else:
     env['HAVE_X11'] = conf.CheckPKG('x11')
     env['HAVE_COCOA'] = 0
-   
+    # SOIL
+    env['HAVE_SOIL'] = conf.CheckPKG('SOIL')
+    # LZO
+    env['HAVE_LZO'] = conf.CheckPKG('lzo2')
+    # sfml
+    env['HAVE_SFML'] = conf.CheckPKG('sfml-network') and conf.CheckCXXHeader("SFML/Network/Ftp.hpp")
+
 # handling wx flags CCFLAGS should be created before
 wxmods = ['aui', 'adv', 'core', 'base']