Stringify substitutions [some shells require it].

Makefile.shared

@@ -68,7 +68,7 @@ LIBDEPS=
 # The rest is private to this makefile.
 
 SET_X=:
-#SET_X=set -x
+SET_X=set -x
 
 top:
 	echo "Trying to use this makefile interactively?  Don't."
@@ -89,21 +89,23 @@ CALC_VERSIONS=	\
 
 LINK_APP=	\
   ( $(SET_X);   \
-    LIBDEPS=$${LIBDEPS:-$(LIBDEPS)}; \
-    LIBPATH=`for x in $$LIBDEPS; do if echo $$x | grep '^ *-L' > /dev/null 2>&1; then echo $$x | sed -e 's/^ *-L//'; fi; done | uniq`; \
+    LIBDEPS="$${LIBDEPS:-$(LIBDEPS)}"; \
+    LDCMD="$${LDCMD:-$(CC)}"; LDFLAGS="$${LDFLAGS:-$(CFLAGS)}"; \
+    LIBPATH=`for x in $(LIBDEPS); do if echo $$x | grep '^ *-L' > /dev/null 2>&1; then echo $$x | sed -e 's/^ *-L//'; fi; done | uniq`; \
     LIBPATH=`echo $$LIBPATH | sed -e 's/ /:/g'`; \
     LD_LIBRARY_PATH=$$LIBPATH:$$LD_LIBRARY_PATH \
-    $${LDCMD:=$(CC)} $${LDFLAGS:=$(CFLAGS)} \
-	-o $${APPNAME:=$(APPNAME)} $(OBJECTS) $$LIBDEPS )
+    $${LDCMD} $${LDFLAGS} -o $${APPNAME:=$(APPNAME)} $(OBJECTS) $${LIBDEPS} )
 
 LINK_SO=	\
   ( $(SET_X);   \
-    LIBDEPS=$${LIBDEPS:-$(LIBDEPS)}; \
+    LIBDEPS="$${LIBDEPS:-$(LIBDEPS)}"; \
+    SHAREDCMD="$${SHAREDCMD:-$(CC)}"; \
+    SHAREDFLAGS="$${SHAREDFLAGS:-$(CFLAGS) $(SHARED_LDFLAGS)}"; \
     nm -Pg $$SHOBJECTS | grep ' [BDT] ' | cut -f1 -d' ' > lib$(LIBNAME).exp; \
     LIBPATH=`for x in $$LIBDEPS; do if echo $$x | grep '^ *-L' > /dev/null 2>&1; then echo $$x | sed -e 's/^ *-L//'; fi; done | uniq`; \
     LIBPATH=`echo $$LIBPATH | sed -e 's/ /:/g'`; \
     LD_LIBRARY_PATH=$$LIBPATH:$$LD_LIBRARY_PATH \
-    $${SHAREDCMD:=$(CC)} $${SHAREDFLAGS:=$(CFLAGS) $(SHARED_LDFLAGS)} \
+    $${SHAREDCMD} $${SHAREDFLAGS} \
 	-o $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX \
 	$$ALLSYMSFLAGS $$SHOBJECTS $$NOALLSYMSFLAGS $$LIBDEPS \
   ) && $(SYMLINK_SO); \