build: remove hacks around NetSNMP

The workaround for -D_FORTIFY_SOURCE was failing on Fedora because it
was not robust enough. The current version was tested with:

- Fedora 41
- Debian 10
- Ubuntu Trusty (14.04)
- CentOS 7

diff --git a/m4/snmp.m4 b/m4/snmp.m4
index a9ac84024be9afaf1cf3566c476378b66f8b027e..7bf75e4ee0c615ae93a3fa11076cdd6f8395bceb 100644 (file)
--- a/m4/snmp.m4
+++ b/m4/snmp.m4
@@ -13,7 +13,7 @@ AC_DEFUN([lldp_CHECK_SNMP], [
    else
       dnl Check it is working as expected
       NETSNMP_LIBS=`${NETSNMP_CONFIG} --agent-libs`
-      NETSNMP_CFLAGS="`${NETSNMP_CONFIG} --base-cflags | sed 's/-D_FORTIFY_SOURCE=.//'` -DNETSNMP_NO_INLINE"
+      NETSNMP_CFLAGS=`${NETSNMP_CONFIG} --base-cflags`
 
       _save_flags="$CFLAGS"
       _save_libs="$LIBS"