SConstruct: Added conditions to add compiler/linker flags from user's environemn

t if they have any set.

CHANGELOG.txt

@@ -1,5 +1,9 @@
 D2X-Rebirth Changelog
 
+20070522
+--------
+SConstruct: Added conditions to add compiler/linker flags from user's environemnt if they have any set.
+
 20070521
 --------
 ui/window.c: use new 3 argument mouse_get_delta to avoid compiler errors

SConstruct

@@ -3,6 +3,7 @@
 # needed imports
 import sys
 import os
+import SCons.Util
 
 PROGRAM_NAME = 'D2X-Rebirth'
 
@@ -325,6 +326,18 @@ env.Append(CPPPATH = ['include', 'main', 'arch/include'])
 generic_libs = ['SDL', 'physfs']
 sdlmixerlib = ['SDL_mixer']
 
+# Get traditional compiler environment variables
+if os.environ.has_key('CC'):
+	env['CC'] = os.environ['CC']
+if os.environ.has_key('CFLAGS'):
+	env['CCFLAGS'] += SCons.Util.CLVar(os.environ['CFLAGS'])
+if os.environ.has_key('CXX'):
+	env['CXX'] = os.environ['CXX']
+if os.environ.has_key('CXXFLAGS'):
+	env['CXXFLAGS'] += SCons.Util.CLVar(os.environ['CXXFLAGS'])
+if os.environ.has_key('LDFLAGS'):
+	env['LINKFLAGS'] += SCons.Util.CLVar(os.environ['LDFLAGS'])
+
 # windows or *nix?
 if sys.platform == 'win32':
 	print "compiling on Windows"
@@ -493,6 +506,15 @@ Help(PROGRAM_NAME + ', SConstruct file help:' +
 	'gp2x=1'          compile for GP2X handheld
 	
 	Default values:
-	""" + ' sharepath = ' + DATA_DIR + '\n')
+	""" + ' sharepath = ' + DATA_DIR + """
 
+	Some influential environment variables:
+     	  CC          C compiler command
+  	  CFLAGS      C compiler flags
+  	  LDFLAGS     linker flags, e.g. -L<lib dir> if you have libraries in a
+                      nonstandard directory <lib dir>
+                      <include dir>
+          CXX         C++ compiler command
+          CXXFLAGS    C++ compiler flags
+        """)
 #EOF