GCC warnings with stricter compiler checks ("main" branch) about collectd HOT 1 OPEN

    epics . . . . . . . . no (pkg-config could not find epics-base)
    intel mic . . . . . . no (MicAccessApi not found)
    libaquaero5 . . . . . no (libaquaero5.h not found)
    libganglia  . . . . . no (rpc/types.h not found)
    libiptc . . . . . . . no (pkg-config doesn't know libiptc)
    libjevents  . . . . . no (jevents.h not found)
    libkstat  . . . . . . no (Solaris only)
    libnetapp . . . . . . no (netapp_api.h not found)
    libperfstat . . . . . no (AIX only)
    libpmwapi . . . . . . no (pmw_api.h not found)
    libpqos . . . . . . . no (pqos.h not found)
    librouteros . . . . . no (routeros_api.h not found)
    libsigrok   . . . . . no (pkg-config could not find libsigrok)
    libslurm .  . . . . . no (pkg-config doesn't know libslurm)
    libtokyotyrant  . . . no (tcrdb.h not found)
    oracle  . . . . . . . no (ORACLE_HOME is not set)
    aquaero . . . . . . . no (libaquaero5.h not found)
    dcpmm  . . . . . .  . no (pmw_api.h not found)
    epics . . . . . . . . no (pkg-config could not find epics-base)
    gmond . . . . . . . . no (rpc/types.h not found)
    intel_pmu . . . . . . no (jevents.h not found)
    intel_rdt . . . . . . no (pqos.h not found)
    iptables  . . . . . . no (pkg-config doesn't know libiptc)
    lpar  . . . . . . . . no (AIX only)
    mic . . . . . . . . . no (MicAccessApi not found)
    netapp  . . . . . . . no (netapp_api.h not found)
    oracle  . . . . . . . no (ORACLE_HOME is not set)
    perl  . . . . . . . . no (needs libperl)
    redfish . . . . . . . no (redfish.h not found)
    routeros  . . . . . . no (routeros_api.h not found)
    sigrok  . . . . . . . no (pkg-config could not find libsigrok)
    slurm . . . . . . . . no (pkg-config doesn't know libslurm)
    tokyotyrant . . . . . no (tcrdb.h not found)

$ diff -ub build.txt build-pedantic.txt| grep '^+.*warning:' | sed -e 's/:[0-9]\+:[0-9]\+:/:/' -e 's/\[-Wpedantic\]//' | cut -b6- | sort | uniq -c
     11 daemon/plugin.c: warning: ISO C forbids assignment between function pointer and ‘void *’ 
      9 daemon/plugin.c: warning: ISO C forbids conversion of function pointer to object pointer type 
      2 daemon/plugin.c: warning: ISO C forbids initialization between function pointer and ‘void *’ 
      4 daemon/utils_time.h: warning: ISO C++ forbids compound-literals 
      2 dpdkevents.c: warning: ISO C does not support '__FUNCTION__' predefined identifier 
      2 dpdkstat.c: warning: ISO C does not support '__FUNCTION__' predefined identifier 
      1 dpdk_telemetry.c: warning: ISO C does not support '__FUNCTION__' predefined identifier 
      2 grpc.cc: warning: C++ designated initializers only available with '-std=c++20' or '-std=gnu++20' [-Wc++20-extensions]
      1 java.c: warning: ISO C forbids assignment between function pointer and 'void *' 
      1 java.c: warning: ISO C forbids conversion of function pointer to object pointer type 
     15 java.c: warning: ISO C forbids initialization between function pointer and 'void *' 
      2 mcelog.c: warning: ISO C does not support '__FUNCTION__' predefined identifier 
     12 mdevents.c: warning: ISO C does not support '__FUNCTION__' predefined identifier 
      3 mdevents.c: warning: ISO C forbids empty initializer braces before C2X 
      1 processes.c: warning: ISO C forbids empty initializer braces before C2X 
      1 python.c: warning: format '%p' expects argument of type 'void *', but argument 4 has type 'PyObject *' {aka 'struct _object *'} [-Wformat=]
      8 python.c: warning: ISO C forbids conversion of function pointer to object pointer type 
      1 python.c: warning: ISO C forbids conversion of object pointer to function pointer type 
      1 smart.c: warning: ISO C forbids empty initializer braces before C2X 
     12 snmp.c: warning: embedding a directive within macro arguments is not portable
     34 utils/dpdk/dpdk.c: warning: ISO C does not support '__FUNCTION__' predefined identifier 
      6 utils/dpdk/dpdk.h: warning: ISO C does not support '__FUNCTION__' predefined identifier 
      1 utils/format_kairosdb/format_kairosdb.c: warning: unknown escape sequence: '\{'
      6 utils/ovs/ovs.c: warning: ISO C does not support '__FUNCTION__' predefined identifier