725657: net-snmp should be compiled with relro

This patch probably won't get ever upstream. It ensures that relro options [1]
are propagated where appropriate.

[1]: configure --with-ldflags="-Wl,-z,relro -Wl,-z,now"

diff -up net-snmp-5.7.2.pre2/apps/Makefile.in.rhel net-snmp-5.7.2.pre2/apps/Makefile.in
--- net-snmp-5.7.2.pre2/apps/Makefile.in.rhel	2012-07-31 14:00:04.051915227 +0200
+++ net-snmp-5.7.2.pre2/apps/Makefile.in	2012-07-31 14:00:05.506909768 +0200
@@ -204,7 +204,7 @@ snmpdf$(EXEEXT):    snmpdf.$(OSUFFIX) $(
 	$(LINK) ${CFLAGS} -o $@ snmpdf.$(OSUFFIX) ${LDFLAGS} ${LIBS}
 
 libnetsnmptrapd.$(LIB_EXTENSION)$(LIB_VERSION): $(LLIBTRAPD_OBJS)
-	$(LIB_LD_CMD) $@ ${LLIBTRAPD_OBJS} $(MIBLIB) $(USELIBS) $(PERLLDOPTS_FOR_LIBS) $(LIB_LD_LIBS)
+	$(LIB_LD_CMD) $@ ${LLIBTRAPD_OBJS} $(MIBLIB) $(USELIBS) $(PERLLDOPTS_FOR_LIBS) $(LIB_LD_LIBS) ${LDFLAGS}
 	$(RANLIB) $@
 
 snmpinforminstall:
diff -up net-snmp-5.7.2.pre2/perl/agent/default_store/Makefile.PL.rhel net-snmp-5.7.2.pre2/perl/agent/default_store/Makefile.PL
--- net-snmp-5.7.2.pre2/perl/agent/default_store/Makefile.PL.rhel	2012-07-12 04:23:25.000000000 +0200
+++ net-snmp-5.7.2.pre2/perl/agent/default_store/Makefile.PL	2012-07-31 14:00:08.835898341 +0200
@@ -69,6 +69,8 @@ sub InitMakeParams {
     }
     else {
 	$opts = NetSNMPGetOpts("../../");
+	$Params{'LDDLFLAGS'} = "$Config{lddlflags} " . `$opts->{'nsconfig'} --ldflags`;
+	chomp($Params{'LDDLFLAGS'});
 	$Params{'LIBS'}    = `$opts->{'nsconfig'} --libs`;
 	chomp($Params{'LIBS'});
 	$Params{'CCFLAGS'} = `$opts->{'nsconfig'} --cflags`;
diff -up net-snmp-5.7.2.pre2/python/setup.py.rhel net-snmp-5.7.2.pre2/python/setup.py
--- net-snmp-5.7.2.pre2/python/setup.py.rhel	2012-07-12 04:23:25.000000000 +0200
+++ net-snmp-5.7.2.pre2/python/setup.py	2012-07-31 14:00:07.618902228 +0200
@@ -18,14 +18,18 @@ if intree:
     netsnmp_libs = os.popen(basedir+'/net-snmp-config --libs').read()
     libdir = os.popen(basedir+'/net-snmp-config --build-lib-dirs '+basedir).read()
     incdir = os.popen(basedir+'/net-snmp-config --build-includes '+basedir).read()
+    ldflags = os.popen(basedir+'/net-snmp-config --ldflags').read()
     libs = re.findall(r"-l(\S+)", netsnmp_libs)
     libdirs = re.findall(r"-L(\S+)", libdir)
     incdirs = re.findall(r"-I(\S+)", incdir)
+    linkargs = ldflags.split()
 else:
     netsnmp_libs = os.popen('net-snmp-config --libs').read()
+    ldflags = os.popen('net-snmp-config --ldflags').read()
     libdirs = re.findall(r"-L(\S+)", netsnmp_libs)
     incdirs = []
     libs = re.findall(r"-l(\S+)", netsnmp_libs)
+    linkargs = ldflags.split()
 
 setup(
     name="netsnmp-python", version="1.0a1",
@@ -41,6 +45,7 @@ setup(
        Extension("netsnmp.client_intf", ["netsnmp/client_intf.c"],
                  library_dirs=libdirs,
                  include_dirs=incdirs,
-                 libraries=libs )
+                 libraries=libs,
+                 extra_link_args=linkargs )
        ]
     )