Hi Yusuke

NOOPT is added for potentially large source files to reduce the compile time and memory usage.

I guess -D_FORTIFY_SOURCE option is added in your project Makefile or in your environment variable, instead of by 
ROME.
However, we could modify ROME to explicitly disable it by adding -D_FORTIFY_SOURCE=0 to NOOPT.
That can be done by modifying builder/src/ROMEBuildMakeFile.cpp line 1348.

Could you try to do it ?

Ryu


> Dear all,
> 
> Under the environment with GCC4.8.5 and ROOT6.08.04,
> we get the following warning messages when compiling XXXAnalyzer3, XXXAnalyzer4, 
> XXXConfig, XXXConfig2,3,4, XXXDBAccess, and XXXConfigToForm.
> 
> 
> In file included from /usr/include/stdlib.h:24:0,
>                  from /meg/data1/shared/mc/benchmark_test/rome3-root6.08.04-
> gcc485/include/ROMEAnalyzer.h:10,
>                  from include/generated/MEGPrecompile.h:23,
>                  from <command-line>:0:
> /usr/include/features.h:330:4: warning: #warning _FORTIFY_SOURCE requires compiling 
> with optimization (-O) [-Wcpp]
>  #  warning _FORTIFY_SOURCE requires compiling with optimization (-O)
>     ^
> [345/369] compiling obj/MEGAnalyzer4.o
> In file included from /usr/include/stdlib.h:24:0,
>                  from /meg/data1/shared/mc/benchmark_test/rome3-root6.08.04-
> gcc485/include/ROMEAnalyzer.h:10,
>                  from include/generated/MEGPrecompile.h:23,
>                  from <command-line>:0:
> /usr/include/features.h:330:4: warning: #warning _FORTIFY_SOURCE requires compiling 
> with optimization (-O) [-Wcpp]
>  #  warning _FORTIFY_SOURCE requires compiling with optimization (-O)
>     ^
> 
> It seems due to 'NOOPT' flag added to those objects in the Makefile.
> Is the 'NOOPT' flag necessary? If not, how can we remove it?
> 
> Regards,
> Yusuke