--- a/SConstruct	2019-08-21 09:25:00.980260318 +0200
+++ b/SConstruct	2019-08-21 09:27:53.653601283 +0200
@@ -1858,7 +1858,6 @@
     # -Winvalid-pch Warn if a precompiled header (see Precompiled Headers) is found in the search path but can't be used.
     env.Append( CCFLAGS=["-fno-omit-frame-pointer",
                          "-fno-strict-aliasing",
-                         "-ggdb" if not env.TargetOSIs('emscripten') else "-g",
                          "-pthread",
                          "-Wall",
                          "-Wsign-compare",
@@ -1870,6 +1869,8 @@
             env.Append( CCFLAGS=["-Werror"] )
 
     env.Append( CXXFLAGS=["-Woverloaded-virtual"] )
+    env.Append( CXXFLAGS=os.environ['CXXFLAGS'] )
+    env.Append( LINKFLAGS=os.environ['LDFLAGS'] )
     if env.ToolchainIs('clang'):
         env.Append( CXXFLAGS=['-Werror=unused-result'] )
 
@@ -1890,8 +1891,8 @@
 
     env.Append( LIBS=[] )
 
-    #make scons colorgcc friendly
-    for key in ('HOME', 'TERM'):
+    #make scons colorgcc, distcc, ccache friendly
+    for key in ('HOME', 'PATH', 'TERM'):
         try:
             env['ENV'][key] = os.environ[key]
         except KeyError: