On Sep 1, 2013, at 3:02 AM, "Hungwin Chen" <[email protected]> wrote:

> When compiling gnustep program, following error is thrown. This looks like 
> c++ header is not found, but checking /usr/include/c++/<version>/algorithm 
> shows that algorithm headers are there. What modification is required to 
> include c++ header to GNUmakefile or how can this be fixed? 

Use .mm instead of .m.  Since you are using objc++ rather than objc.

Thanks,
Andrew Pinski

>  
> Thanks 
>  
> make messages=yes
> This is gnustep-make 2.6.2. Type 'make print-gnustep-make-help' for help.
> Making all for app Example...
> gcc main.m -c \
>               -MMD -MP -DGNUSTEP -DGNUSTEP_BASE_LIBRARY=1 -DGNU_GUI_LIBRARY=1 
> -DGNU_RUNTIME=1 -DGNUSTEP_BASE_LIBRARY=1 -fno-strict-aliasing -fexceptions 
> -fobjc-exceptions -D_NATIVE_OBJC_EXCEPTIONS -pthread -fPIC -Wall -DGSWARN 
> -DGSDIAGNOSE -Wno-import -g -O2 -fgnu-runtime -include Example.pch 
> -fconstant-string-class=NSConstantString -I../../Library/Core -I. 
> -I/home/hchen/GNUstep/Library/Headers -I/usr/local/include/GNUstep 
> -I/usr/include/GNUstep \
>                -o obj/Example.obj/main.m.o
> In file included from <command-line>:0:0:
> ./Example.pch:12:21: fatal error: algorithm: No such file or directory
> compilation terminated.
> make[3]: *** [obj/Example.obj/main.m.o] Error 1
> make[2]: *** [internal-app-run-compile-submake] Error 2
> make[1]: *** [Example.all.app.variables] Error 2
> make: *** [internal-all] Error 2
>  
>  
> $ls 4.4/algorithm 4.4.7/algorithm 4.6/algorithm 4.6.4/algorithm  
> 4.7/algorithm 4.7.3/algorithm v1/algorithm 
> 4.4.7/algorithm  4.6.4/algorithm  4.7.3/algorithm  v1/algorithm
> 4.4/algorithm    4.6/algorithm    4.7/algorithm
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