Problem compiling gcc 5.2.0 on VortexDX86 embedded

[Kai Ruottu]

25.9.2015, 5:21, Renato Mendes kirjoitti:
> I tried also with an older version of gcc (4.8.2) and got the same
> problem in different source file, this time on genconstants.c. Check
> the logs:
>
> make[3]: Entering directory `/home/ftp/pub/gcc-build/gcc'
> g++ -c   -g -DIN_GCC   -fno-exceptions -fno-rtti
> -fasynchronous-unwind-tables -W -Wall -Wwrite-strings -Wcast-qual
> -Wmissing-format-attribute -fno-common  -DHAVE_CONFIG_H
> -DGENERATOR_FILE -I. -Ibuild -I../../gcc-4.8.2/gcc
> -I../../gcc-4.8.2/gcc/build -I../../gcc-4.8.2/gcc/../include
> -I../../gcc-4.8.2/gcc/../libcpp/include
> -I../../gcc-4.8.2/gcc/../libdecnumber
> -I../../gcc-4.8.2/gcc/../libdecnumber/bid -I../libdecnumber
> -I../../gcc-4.8.2/gcc/../libbacktrace    \
> -o build/genconstants.o ../../gcc-4.8.2/gcc/genconstants.c
> In file included from ../../gcc-4.8.2/gcc/genconstants.c:28:
> ../../gcc-4.8.2/gcc/system.h:205:20: cstring: No such file or directory
> ../../gcc-4.8.2/gcc/genconstants.c: In function `int print_md_constant(void**,
>     void*)':
> ../../gcc-4.8.2/gcc/genconstants.c:38: warning: unused parameter `void*info'
> ../../gcc-4.8.2/gcc/genconstants.c: In function `int print_enum_type(void**,
>     void*)':
> ../../gcc-4.8.2/gcc/genconstants.c:51: warning: unused parameter `void*info'
> make[3]: *** [build/genconstants.o] Error 1
> make[3]: Leaving directory `/home/ftp/pub/gcc-build/gcc'
> make[2]: *** [all-stage1-gcc] Error 2
> make[2]: Leaving directory `/home/ftp/pub/gcc-build'
> make[1]: *** [stage1-bubble] Error 2
> make[1]: Leaving directory `/home/ftp/pub/gcc-build'
> make: *** [all] Error 2
>
>
As you can see the GCC sources are tried to be compiled using 'g++', not 
'gcc' as it
happened in the gcc-3 - early gcc-4 times!

If your C++ compiler doesn't understand the current sources, then please 
try adding :

--disable-build-with-cxx

onto the GCC configure command. With gcc-4.8.2 this should still work 
but I'm not
sure... Used it a couple of times with gcc-4.1.2 as the system GCC - 
neither it worked
with newer GCC sources.  Don't know whether this option was a temporary 
workaround
for a while until everyone had a working system g++. Googling could help 
to find the
history for this option. The net has examples for its use like :
http://stackoverflow.com/questions/16650346/configure-gcc-for-optimization