release: add check-symbols and check-security make targets

These are not added to the default checks because some of them depend on
release-build configs.

[Zcash: See 56734f4 for check-security]

src/Makefile.am

@@ -79,7 +79,7 @@ LIBZCASH_H = \
   zcash/prf.h \
   zcash/util.h
 
-.PHONY: FORCE check-security
+.PHONY: FORCE check-symbols check-security
 # bitcoin core #
 BITCOIN_CORE_H = \
   addrman.h \
@@ -482,6 +482,12 @@ clean-local:
 	$(AM_V_CXX) $(OBJCXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
 	  $(CPPFLAGS) $(AM_CXXFLAGS) $(QT_INCLUDES) $(CXXFLAGS)  -c -o $@ $<
 
+check-symbols: $(bin_PROGRAMS)
+if GLIBC_BACK_COMPAT
+	@echo "Checking glibc back compat of [$(bin_PROGRAMS)]..."
+	$(AM_V_at) READELF=$(READELF) CPPFILT=$(CPPFILT) $(top_srcdir)/contrib/devtools/symbol-check.py < $(bin_PROGRAMS)
+endif
+
 check-security: $(bin_PROGRAMS)
 if HARDEN
 	@echo "Checking binary security of [$(bin_PROGRAMS)]..."