Hi, I am unable to compile Freeradius 3.0.16. OS version: Red Hat Enterprise Linux Server release 5.11 (Tikanga) Compiler version: Using built-in specs. Target: i386-redhat-linux Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-libgcj-multifile --enable-languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk --disable-dssi --disable-plugin --with-java-home=/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre --with-cpu=generic --host=i386-redhat-linux Thread model: posix gcc version 4.1.2 20080704 (Red Hat 4.1.2-55) Debug logs: CC jlibtool.c HEADER src/include/attributes.h HEADER src/include/features.h HEADER src/include/missing.h HEADER src/include/tls.h HEADER src/include/rfc2865.h HEADER src/include/rfc2866.h HEADER src/include/rfc2867.h HEADER src/include/rfc2868.h HEADER src/include/rfc2869.h HEADER src/include/rfc3162.h HEADER src/include/rfc3576.h HEADER src/include/rfc3580.h HEADER src/include/rfc4072.h HEADER src/include/rfc4372.h HEADER src/include/rfc4603.h HEADER src/include/rfc4675.h HEADER src/include/rfc4679.h HEADER src/include/rfc4818.h HEADER src/include/rfc4849.h HEADER src/include/rfc5090.h HEADER src/include/rfc5176.h HEADER src/include/rfc5447.h HEADER src/include/rfc5580.h HEADER src/include/rfc5607.h HEADER src/include/rfc5904.h HEADER src/include/rfc6519.h HEADER src/include/rfc6572.h HEADER src/include/rfc6677.h HEADER src/include/rfc6911.h HEADER src/include/rfc6929.h HEADER src/include/rfc6930.h HEADER src/include/rfc7055.h HEADER src/include/rfc7155.h HEADER src/include/rfc7268.h HEADER src/include/rfc7499.h HEADER src/include/rfc7930.h HEADER src/include/vqp.h HEADER src/include/freeradius.h CC src/lib/cbuff.c cc1: error: unrecognized command line option "-Wno-date-time" make: *** [build/objs/src/lib/cbuff.lo] Error 1 I have fixed this issue by removing "-Wno-date-time" from configure & configure.ac files. But question is: is it correct approach? Thank you very much.