Sanitizer libraries static linking (#70)

* scons: Fix sanitizer lib link for clang

Change-Id: I2441466c5c9343afd938185b8ec5047d4e95ac70

* scons: Statically link libubsan when using sanitizers with gcc

Change-Id: I362a1fb87771454ad94e439847a85d19108f375a

---------

Co-authored-by: Gabriel Busnot <gabriel.busnot@arteris.com>

SConstruct

@@ -562,10 +562,14 @@ for variant_path in variant_paths:
     if sanitizers:
         sanitizers = ','.join(sanitizers)
         if env['GCC'] or env['CLANG']:
+            libsan = (
+                ['-static-libubsan', '-static-libasan']
+                if env['GCC']
+                else ['-static-libsan']
+            )
             env.Append(CCFLAGS=['-fsanitize=%s' % sanitizers,
                                  '-fno-omit-frame-pointer'],
-                        LINKFLAGS=['-fsanitize=%s' % sanitizers,
-                                   '-static-libasan'])
+                       LINKFLAGS=['-fsanitize=%s' % sanitizers] + libsan)
 
             if main["BIN_TARGET_ARCH"] == "x86_64":
                 # Sanitizers can enlarge binary size drammatically, north of