How to find which gcc version the installed boost library is using ? So I can find which version of C++, my HPX library is using. HPX library depend on boost library hugely. I actually forgot how I (using which version of gcc) built boost library a year ago.
Thanks
If it's layout verioned when you built boost, the lib name must like: libboost_wave-gcc48-mt-s-1_65.a, so gcc48 (gcc 4.8.x) is your version.
More accurate : Run following command:
strings libboost_wave-gcc48-mt-s-1_65.a | egrep -ie "GCC.*([0-9]\.[0-9]\.[0-9])"
You'll get the exact gcc version 4.8.5 from the output:
GCC: (GNU) 4.8.5 20150623 (Red Hat 4.8.5-11)
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On my system default gcc version is 4.4.7 , But i want to build glib library with gcc 6.3 version.
For that i tried running ./configure from glib source as shown below:
../configure CC="/version/global/pkgs/gcc/v6.3.0/bin/gcc" CFLAGS='-fPIC' CXXFLAGS='-fPIC' --enable-static=yes --prefix=/home/kallel/glib_63/glib-2.56.1/new_glib63 --enable-libmount=no --with-pcre=/home/kallel/pcre_lib/pcre-8.20/pcre_library
Once after building glib library. To see on which gcc compiler version it got built with following command:-
strings -a libglib-2.0.so.0.5600.1 | grep "GCC: ("
o/p:-
GCC: (GNU) 4.4.7 20120313 (Red Hat 4.4.7-9)
GCC: (Synopsis) 6.3.0
GCC: (GNU) 4.4.7 20120313 (Red Hat 4.4.7-4)
I could not understand why it is still showing output with 4.4.7, Please help me in understanding the output. Is there anything wrong in my ./configure command? How do we make sure that library was built with gcc 6.3
I could not understand why it is still showing output with 4.4.7
Your library contains object code that you built, as well as parts of GLIBC that are required to support shared libraries (crti.o, crtn.o, etc.).
These parts will continue to show whatever GCC they were built with, regardless of what you build glib code with.
According to the gFortran docs in order to enable OpenACC support it is necessary to use the -fopenacc switch. However, this does not seem to work.
gfortran: error: unrecognized command line option ‘-fopenacc’
gFortran version is GNU Fortran (GCC) 4.8.5 20150623 (Red Hat 4.8.5-28).
What is the correct way to compile Fortran code with OpenACC support?
Your version is WAY too old. The currently supported versions of GCC are 7, 8 and 9.
The version specific manuals are available at https://gcc.gnu.org/onlinedocs/gcc-9.2.0/gfortran/OpenACC.html#OpenACC Change the version number in the address to see other versions.
The option appears to be added in version 5 but the support in more recent versions is likely to be much better.
With my knowledge, libstdc++.so is bundled with g++ and will be installed when installing a g++. However, if I want to install a certain version of libstdc++.so, how can I know which version of g++ (or gcc) should I install?
See the this section of appendix B of the libstdc++ manual, which contains a list of gcc and libstdc++ version numbers.
I need to install cuda 5.0 in centos7 x64. But, I have a problem with GCC, as the current version installed is (GCC) 4.8.5 20150623 (Red Hat 4.8.5-11).
What is the supported version of GCC for Cuda 5.0 and how to install this older GCC version with my actual compiler ((GCC) 4.8.5).
Thanks in advance
#talonmies has provided a list of maximum GCC version supported by different versions of CUDA. Specifically: CUDA 5.0 supports GCC up to 4.6 - and that's what you should install.
There's an answer here on SO which explains how to get GCC 4.6(.3) installed by building from sources. Essentially you need to build some libraries with any C compiler before you can build GCC itself.
Good luck.
I already have GCC and Gfortran installed. It is gcc version 4.1.2 20080704 (Red Hat 4.1.2-52). However, I am trying to install a more recent gfortran compiler. Here is what I did so far. From the http://gfortran.meteodat.ch/download/x86_64/ I downloaded the nightly "gcc-trunk.tar.xz" and I extracted it into the directory "opt." This created the directory "gcc-trunk". I then downloaded the "gcc-5-infrastructure.tar.xz" and extracted it into "gcc-trunk." I then input
PATH="$HOME/gcc-trunk/bin":$PATH
MANPATH="$HOME/gcc-trunk/share/man"
LD_LIBRARY_PATH="$HOME/gcc-trunk/lib64":"$HOME/gcc-trunk/lib":$LD_LIBRARY_PATH
on bash. I then tried to verify whether gfortran installed correctly with
/path_name/gfortran -v
However, I get the message GLIBC_2.11' not found (required by /path_name/bin/gfortran). I am not sure what is the problem. What should I do?
The gfortran binary you downloaded was built against a newer version of glibc than the one you have installed on your system.
You can solve this problem e.g. by
Acquiring a gfortran binary built against an older version of glibc
Building GCC from source
Upgrade to a newer distro with a newer glibc