--- SConstruct.orig	2015-05-03 20:26:13.324176663 -0400
+++ SConstruct	2015-05-03 20:35:06.104098160 -0400
@@ -1007,7 +1007,6 @@
     # -Winvalid-pch Warn if a precompiled header (see Precompiled Headers) is found in the search path but can't be used.
     env.Append( CCFLAGS=["-fPIC",
                          "-fno-strict-aliasing",
-                         "-ggdb",
                          "-pthread",
                          "-Wall",
                          "-Wsign-compare",
@@ -1020,7 +1019,8 @@
             env.Append( CCFLAGS=["-Werror"] )
 
     env.Append( CPPDEFINES=["_FILE_OFFSET_BITS=64"] )
-    env.Append( CXXFLAGS=["-Wnon-virtual-dtor", "-Woverloaded-virtual"] )
+    env.Append( CXXFLAGS=os.environ['CXXFLAGS'] )
+    env.Append( LINKFLAGS=os.environ['LDFLAGS'] )
     env.Append( LINKFLAGS=["-fPIC", "-pthread"] )
 
     # SERVER-9761: Ensure early detection of missing symbols in dependent libraries at program
@@ -1038,7 +1038,7 @@
     if not darwin:
         env.Append( LINKFLAGS=["-rdynamic"] )
 
-    env.Append( LIBS=[] )
+    env.Append( LIBS=['pcre', 'pcrecpp'] )
 
     #make scons colorgcc friendly
     for key in ('HOME', 'TERM'):

.