- bug#386: --enable-allsymbols option links all binaries to libunbound

and reduces install size significantly.


git-svn-id: file:///svn/unbound/trunk@2413 be551aaa-1e26-0410-a405-d3ace91eadb9

Makefile.in

@@ -45,6 +45,7 @@ UB_ON_WINDOWS=@UB_ON_WINDOWS@
 WITH_PYTHONMODULE=@WITH_PYTHONMODULE@
 WITH_PYUNBOUND=@WITH_PYUNBOUND@
 PYTHON_SITE_PKG=@PYTHON_SITE_PKG@
+EXPORT_ALL_SYMBOLS=@EXPORT_ALL_SYMBOLS@
 
 SWIG=@SWIG@
 YACC=@YACC@
@@ -102,13 +103,25 @@ UNITTEST_SRC=$(patsubst $(srcdir)/%,%, \
 	testcode/readhex.c testcode/ldns-testpkts.c smallapp/worker_cb.c \
 	$(COMMON_SRC)
 UNITTEST_OBJ=$(addprefix $(BUILD),$(UNITTEST_SRC:.c=.lo)) $(COMPAT_OBJ)
-DAEMON_SRC=$(patsubst $(srcdir)/%,%, $(wildcard $(srcdir)/daemon/*.c)) \
-	$(COMMON_SRC)
+
+DAEMON_SRC=$(patsubst $(srcdir)/%,%, $(wildcard $(srcdir)/daemon/*.c))
+ifneq "$(EXPORT_ALL_SYMBOLS)" "yes"
+DAEMON_SRC+=$(COMMON_SRC)
+endif
 DAEMON_OBJ=$(addprefix $(BUILD),$(DAEMON_SRC:.c=.lo)) $(COMPAT_OBJ)
-CHECKCONF_SRC=smallapp/unbound-checkconf.c smallapp/worker_cb.c $(COMMON_SRC)
+
+CHECKCONF_SRC=smallapp/unbound-checkconf.c smallapp/worker_cb.c
+ifneq "$(EXPORT_ALL_SYMBOLS)" "yes"
+CHECKCONF_SRC+=$(COMMON_SRC)
+endif
 CHECKCONF_OBJ=$(addprefix $(BUILD),$(CHECKCONF_SRC:.c=.lo)) $(COMPAT_OBJ)
-CONTROL_SRC=smallapp/unbound-control.c smallapp/worker_cb.c $(COMMON_SRC)
+
+CONTROL_SRC=smallapp/unbound-control.c smallapp/worker_cb.c
+ifneq "$(EXPORT_ALL_SYMBOLS)" "yes"
+CONTROL_SRC+=$(COMMON_SRC)
+endif
 CONTROL_OBJ=$(addprefix $(BUILD),$(CONTROL_SRC:.c=.lo)) $(COMPAT_OBJ)
+
 HOST_SRC=smallapp/unbound-host.c
 HOST_OBJ=$(addprefix $(BUILD),$(HOST_SRC:.c=.lo)) $(filter-out $(BUILD)compat/ctime_r.lo, $(COMPAT_OBJ))
 UBANCHOR_SRC=smallapp/unbound-anchor.c
@@ -224,10 +237,19 @@ else
 ldnslib=
 endif
 
+UBSYMS+=-export-symbols $(srcdir)/libunbound/ubsyms.def
+CLUBSYMS=-export-symbols $(BUILD)clubsyms.def
+EXTRALINK=
+ifeq "$(EXPORT_ALL_SYMBOLS)" "yes"
+UBSYMS=
+CLUBSYMS=
+EXTRALINK=-L. -L.libs -lunbound
+endif
+
 libunbound.la:	$(LIBUNBOUND_OBJ) $(ldnslib)
 	$(INFO) Link $@
 ifeq ($(CHECKLOCK_SRC),)
-	$Q$(LINK_LIB) -export-symbols $(srcdir)/libunbound/ubsyms.def -o $@ $(sort $(LIBUNBOUND_OBJ)) -rpath $(libdir) $(LIBS)
+	$Q$(LINK_LIB) $(UBSYMS) -o $@ $(sort $(LIBUNBOUND_OBJ)) -rpath $(libdir) $(LIBS)
 else
 	cp $(srcdir)/libunbound/ubsyms.def $(BUILD)clubsyms.def
 	echo lock_protect >> $(BUILD)clubsyms.def
@@ -240,20 +262,20 @@ else
 	echo checklock_init >> $(BUILD)clubsyms.def
 	echo checklock_thrcreate >> $(BUILD)clubsyms.def
 	echo checklock_thrjoin >> $(BUILD)clubsyms.def
-	$Q$(LINK_LIB) -export-symbols $(BUILD)clubsyms.def -o $@ $(sort $(LIBUNBOUND_OBJ)) -rpath $(libdir) $(LIBS)
+	$Q$(LINK_LIB) $(CLUBSYMS) -o $@ $(sort $(LIBUNBOUND_OBJ)) -rpath $(libdir) $(LIBS)
 endif
 
-unbound$(EXEEXT):	$(DAEMON_OBJ) $(ldnslib)
+unbound$(EXEEXT):	$(DAEMON_OBJ) libunbound.la $(ldnslib)
 	$(INFO) Link $@
-	$Q$(LINK) -o $@ $(sort $(DAEMON_OBJ)) -lssl $(LIBS)
+	$Q$(LINK) -o $@ $(sort $(DAEMON_OBJ)) $(EXTRALINK) -lssl $(LIBS)
 
-unbound-checkconf$(EXEEXT):	$(CHECKCONF_OBJ) $(ldnslib)
+unbound-checkconf$(EXEEXT):	$(CHECKCONF_OBJ) libunbound.la $(ldnslib)
 	$(INFO) Link $@
-	$Q$(LINK) -o $@ $(sort $(CHECKCONF_OBJ)) $(LIBS)
+	$Q$(LINK) -o $@ $(sort $(CHECKCONF_OBJ)) $(EXTRALINK) -lssl $(LIBS)
 
-unbound-control$(EXEEXT):	$(CONTROL_OBJ) $(ldnslib)
+unbound-control$(EXEEXT):	$(CONTROL_OBJ) libunbound.la $(ldnslib)
 	$(INFO) Link $@
-	$Q$(LINK) -o $@ $(sort $(CONTROL_OBJ)) -lssl $(LIBS)
+	$Q$(LINK) -o $@ $(sort $(CONTROL_OBJ)) $(EXTRALINK) -lssl $(LIBS)
 
 unbound-host$(EXEEXT):	$(HOST_OBJ) libunbound.la $(ldnslib)
 	$(INFO) Link $@

configure

@@ -607,6 +607,7 @@ enable_option_checking=no
 ac_subst_vars='LTLIBOBJS
 subdirs
 ldnsdir
+EXPORT_ALL_SYMBOLS
 WINDRES
 UB_ON_WINDOWS
 CHECKLOCK_SRC
@@ -763,6 +764,7 @@ enable_lock_checks
 enable_alloc_checks
 enable_alloc_lite
 enable_alloc_nonregional
+enable_allsymbols
 with_ldns
 with_ldns_builtin
 '
@@ -1416,6 +1418,9 @@ Optional Features:
                           enable nonregional allocs, slow but exposes regional
                           allocations to other memory purifiers, for debug
                           purposes
+  --enable-allsymbols     export all symbols from libunbound and link binaries
+                          to it, smaller install size but libunbound export
+                          table is polluted by internal symbols
 
 Optional Packages:
   --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
@@ -16626,6 +16631,21 @@ fi
 
 
 
+# Check whether --enable-allsymbols was given.
+if test "${enable_allsymbols+set}" = set; then :
+  enableval=$enable_allsymbols;
+fi
+
+case "$enable_allsymbols" in
+	no)
+	EXPORT_ALL_SYMBOLS=no
+	;;
+	yes)
+	EXPORT_ALL_SYMBOLS=yes
+	;;
+esac
+
+
 # check this after all other compilation checks, since the linking of the lib
 # may break checks after this.
 use_ldns_builtin="no"

configure.ac

@@ -695,6 +695,17 @@ AC_REPLACE_FUNCS(memmove)
 AC_REPLACE_FUNCS(gmtime_r)
 AC_REPLACE_FUNCS(ctime_r)
 
+AC_ARG_ENABLE(allsymbols, AC_HELP_STRING([--enable-allsymbols], [export all symbols from libunbound and link binaries to it, smaller install size but libunbound export table is polluted by internal symbols]))
+case "$enable_allsymbols" in
+	no)
+	EXPORT_ALL_SYMBOLS=no
+	;;
+	yes)
+	EXPORT_ALL_SYMBOLS=yes
+	;;
+esac
+AC_SUBST(EXPORT_ALL_SYMBOLS)
+
 # check this after all other compilation checks, since the linking of the lib
 # may break checks after this.
 use_ldns_builtin="no"

doc/Changelog

@@ -1,3 +1,7 @@
+10 May 2011: Wouter
+	- bug#386: --enable-allsymbols option links all binaries to libunbound
+	  and reduces install size significantly.
+
 14 April 2011: Wouter
 	- configure created with newer autoconf 2.66.