When linking against libtt (a C++ lib) the link stage should use the C++

linker

cde/programs/dtcalc/Imakefile

@@ -31,6 +31,12 @@ SYS_LIBRARIES = -lm -lgen
 #if defined(HPOSFArchitecture)
 #endif
 
+XCOMM On Linux once you link against a C++ library the whole program 
+XCOMM has to be linked with the C++ linker
+#if defined(LinuxDistribution)
+CCLINK = $(CXX)
+#endif
+
 SRCS =  calctool.c      ds_common.c     ds_popup.c \
         ds_widget.c     ds_xlib.c       functions.c \
         help.c          motif.c         mp.c \

cde/programs/dtpad/Imakefile

@@ -11,6 +11,12 @@ SYS_LIBRARIES = DtClientSysLibs DtClientExtraLibs
 #   LOCAL_LDFLAGS = -M mapfile.reorder
 #endif
 
+XCOMM On Linux once you link against a C++ library the whole program 
+XCOMM has to be linked with the C++ linker
+#if defined(LinuxDistribution)
+CCLINK = $(CXX)
+#endif
+
 SRCS = \
         dtpad.c         editCB.c        fileCB.c \
         fileDlg.c       fileIo.c        formatCB.c \

cde/programs/dtscreen/Imakefile

@@ -11,6 +11,12 @@ LOCAL_LIBRARIES = $(DTSVCLIB) $(TTLIB) $(XMLIB) $(XTOOLLIB) $(XPLIB) $(XLIB)
   SYS_LIBRARIES = -lm -lcrypt
 #endif
 
+XCOMM On Linux once you link against a C++ library the whole program 
+XCOMM has to be linked with the C++ linker
+#if defined(LinuxDistribution)
+CCLINK = $(CXX)
+#endif
+
 SRCS =	blank.c		dtscreen.c	flame.c		hopalong.c \
 	hsbramp.c	image.c		life.c		pyro.c \
 	qix.c		resource.c	rotor.c		swarm.c \