Dear Experts
I recently intalled a [color=#0040FF]64bit Debian7[/color] release wich comes standard with [color=#0040FF]gcc 4.7[/color]. After a failed attempt at installing ROOT 6.02.05 and some digging around I realised that I needed to [color=#0000FF]update to gcc 4.8[/color]. I did this with:
../gcc-4.8.2/configure --prefix=/home/user/gcc-4.8.2
make
make install
Everything seemed to run ok.
I therefore now have TWO ggc versions which I can alternate with:
If I type gcc -v I see:
gcc version 4.8.2 (GCC) so I know I am using 4.8.2 to compile.
However, [color=#FF0000]when compiling ROOT 6 [/color] I get some warnings:
MergedLoadStoreMotion.cpp:50:1: warning: multi-line comment [-Wcomment]
SemaDeclCXX.cpp:466:16:warning: variable ‘DiagDefaultParamID’ set but not used [-Wunused-but-set-variable]
followed by[color=#FF0000] errors[/color], the first of which are:
In file included from /home/user/root-6.02.05/core/utils/src/rootcling.cxx:260:0:
/home/user/root-6.02.05/core/utils/src/OptionParser.h:236:1: error: ‘namespace option { }’ redeclared as different kind of symbol
{
^
In file included from /usr/include/unistd.h:890:0,
from include/strlcpy.h:21,
from include/Rtypes.h:36,
from /home/user/root-6.02.05/core/utils/src/rootcling.cxx:249:
/home/user/gcc-4.8.2/include/getopt.h:82:8: error: previous declaration of ‘struct option’
struct option
Various errors in rootcling.cxx, OptionParser.h, etc. follow.
Finally:
I am using all the packages suggested for an Ubuntu type install, and I tried the same build on a [color=#0040FF]ROOT 5.32.04[/color] version with [color=#0040FF]gcc 4.8[/color] and [color=#0040FF]IT WORKED NO PROBLEM[/color].
I have tried to specify the gcc directory using --with-gcc-toolchain but I can’t get it to work, plus I dont think it is a gcc issue since ROOT 5 works.
Let me know if anyone has any idea or suggestions I could try.
Regards
Guillermo