CONFIG: update some wmake rules

- initial settings for ADIOS2, linuxARM64Gcc, linuxARM64Clang

wmake/rules/linuxARM64Clang/c++

@@ -0,0 +1,25 @@
+SUFFIXES += .C .cc .cpp .cxx
+
+c++WARN     = -Wall -Wextra -Wold-style-cast -Wnon-virtual-dtor -Wno-unused-parameter -Wno-invalid-offsetof -Wno-undefined-var-template
+
+# Suppress some warnings for flex++ and CGAL
+c++LESSWARN = -Wno-old-style-cast -Wno-unused-local-typedefs -Wno-tautological-undefined-compare -Wno-shift-negative-value
+
+## CC          = clang++ -std=c++11 -m64
+CC          = clang++ -std=c++11
+
+include $(DEFAULT_RULES)/c++$(WM_COMPILE_OPTION)
+
+ptFLAGS     = -DNoRepository -ftemplate-depth-100
+
+c++FLAGS    = $(GFLAGS) $(c++WARN) $(c++OPT) $(c++DBUG) $(ptFLAGS) $(LIB_HEADER_DIRS) -fPIC
+
+Ctoo        = $(WM_SCHEDULER) $(CC) $(c++FLAGS) -c $< -o $@
+cxxtoo      = $(Ctoo)
+cctoo       = $(Ctoo)
+cpptoo      = $(Ctoo)
+
+LINK_LIBS   = $(c++DBUG)
+
+LINKLIBSO   = $(CC) $(c++FLAGS) -shared
+LINKEXE     = $(CC) $(c++FLAGS) -Xlinker --add-needed