Statically link certain libraries

This arranges to statically link gdb against ncurses, xz, and expat;
while continuing to dynamically link against python and libc.

Author: tromey

gdb/Makefile.in

@@ -184,10 +184,10 @@ READLINE_DEPS = @READLINE_DEPS@
 READLINE_CFLAGS = @READLINE_CFLAGS@
 
 # Where is expat?  This will be empty if expat was not available.
-LIBEXPAT = @LIBEXPAT@
+LIBEXPAT = -Wl,-Bstatic @LIBEXPAT@ -Wl,-Bdynamic
 
 # Where is lzma?  This will be empty if lzma was not available.
-LIBLZMA = @LIBLZMA@
+LIBLZMA = -Wl,-Bstatic @LIBLZMA@ -Wl,-Bdynamic
 
 # Where is libbabeltrace? This will be empty if lbabeltrace was not
 # available.
@@ -589,6 +589,10 @@ INTERNAL_LDFLAGS = \
 	$(CXXFLAGS) $(GLOBAL_CFLAGS) $(MH_LDFLAGS) \
 	$(LDFLAGS) $(CONFIG_LDFLAGS)
 
+CONF_LIBS = @LIBS@
+comma = ,
+LIBS = $(patsubst -lncursesw,-Wl$(comma)-Bstatic -lncursesw -ltinfo -Wl$(comma)-Bdynamic,$(CONF_LIBS))
+
 # If your system is missing alloca(), or, more likely, it's there but
 # it doesn't work, then refer to libiberty.
 
@@ -597,7 +601,7 @@ INTERNAL_LDFLAGS = \
 # LIBIBERTY appears twice on purpose.
 CLIBS = $(SIM) $(READLINE) $(OPCODES) $(BFD) $(ZLIB) $(INTL) $(LIBIBERTY) $(LIBDECNUMBER) \
 	$(XM_CLIBS) $(NAT_CLIBS) $(GDBTKLIBS) \
-	@LIBS@ @GUILE_LIBS@ @PYTHON_LIBS@ \
+	$(LIBS) @GUILE_LIBS@ @PYTHON_LIBS@ \
 	$(LIBEXPAT) $(LIBLZMA) $(LIBBABELTRACE) $(LIBIPT) \
 	$(LIBIBERTY) $(WIN32LIBS) $(LIBGNU) $(LIBICONV) $(LIBMPFR)
 CDEPS = $(XM_CDEPS) $(NAT_CDEPS) $(SIM) $(BFD) $(READLINE_DEPS) \