[CMake] How to build CMake so it works on an older Linux?

[Juan E. Sanchez]

Hello,

Centos 5, Redhat 5 is EOL as of March 31, 2017.

Building cmake in docker:

cd /root;
curl -L -O https://cmake.org/files/v3.11/cmake-3.11.0.tar.gz;
tar xzvf cmake-3.11.0.tar.gz;
yum install -y centos-release-scl;
yum install -y devtoolset-6-gcc devtoolset-6-gcc-c++ 
devtoolset-6-libquadmath-devel devtoolset-6-gcc-gfortran;
source /opt/rh/devtoolset-6/enable;
cd cmake-3.11.0;
./bootstrap --prefix=/root/cmake --parallel=4;
make -j4;
make install;
cd /root;
tar czvf cmake.tgz;

Please note that cmake will silently ignore features for packages that 
haven't been installed into the image, (ncurses, curl).

Regards,

Juan

On 4/5/18 2:50 PM, Ben Sferrazza wrote:
> 
> 
> On Thu, Apr 5, 2018 at 12:30 PM, Alexander Neundorf <neundorf at kde.org 
> <mailto:neundorf at kde.org>> wrote:
> 
>     On 2018 M04 5, Thu 21:24:40 CEST Alexander Neundorf wrote:
>     > On 2018 M04 5, Thu 16:15:17 CEST suzuki toshiya wrote:
>     > > Dear Eric,
>     > >
>     > > # if anybody think "how C++11 environment should be prepared
>     > > # on legacy GNU/Linux" is off-topic and should be discussed
>     > > # in off-list, please let me know. I will do so.
>     > >
>     > > Eric Wing wrote:
>     > > > Thanks for the responses. Yes, I just need this to run on Ubuntu 12.04
>     > > > (and some other old Linux's in that era). Yes, I think the probably is
>     > > > the libstdc++ dependency.
>     > > >
>     > > > As pointed out, it is really hard to get a newer compiler on Ubuntu
>     > > > 12.04. I've been down this road before, and if memory serves, the gcc
>     > > > bootstrapping process to get a newer compiler doesn't seem to work
>     > > > with a compiler older than gcc 4.8. Same goes for clang, which also
>     > > > weirdly relies on gcc 4.8 to bootstrap itself.
>     > >
>     > > At least, gcc-4.6.3, the last official gcc for Ubuntu-12.04, could
>     > > build gcc-4.8.5 manually (without shared libstdc++, so confused
>     > > dependency could be avoided). And, I could build cmake-3.11.0 by it.
>     > > Now I'm checking "make test".
>     >
>     > I have recently built a gcc 4.9.5 on Centos 5, i.e. gcc 4.1. There were no
>     > issues after getting the configure flags right.
> 
>     4.9.4 I mean.
>     You can see the flags here:
>     https://hub.docker.com/r/aneundorf/docker-centos5-build-svn-gcc/~/dockerfile/
>     <https://hub.docker.com/r/aneundorf/docker-centos5-build-svn-gcc/~/dockerfile/>
>     (but the docker image didn't build, it was killed by a dockerhub
>     timeout).
> 
>     Alex
> 
> 
> Were you able to actually build the newer versions of Cmake that require 
> c++11 on Centos 5? I have built up a bootstrapped toolchain, following 
> much of the guidance found in Linux From Scratch, on a Centos 5 system 
> at work (which unfortunately cannot be upgrade due to the support of 
> legacy software). The toolchain uses the latest gcc 7.3.0, binutils 
> 2.30, and glibc 2.19 (the latest version of glibc supported by the 
> 2.6.18 kernel of Centos 5). Yet cmake complains that my toolchain does 
> not support c++11. Which kernel and glibc version do you have on your 
> Centos 5 box? Thank you.
> 
>