Bilder

# Preparing a Linux machine for Bilder

__If all you need is python and sphinx__ (e.g., for builds of documentation), then you need only

* CMake (probably present)

* Python (probably present)

* Python-dev or Python-devel (on Fedora)

* Latex as installed below

* Perl-dev or Perl-devel with perl-ExtUtils-Embed

and then you can add the arguments,  -W python,cmake, and your installed Python and CMake will be used if your path is correct.

## Required Packages. 

Rocky Linux 8

Copy/Paste to execute

~~~~~~

dnf install --enablerepo=powertools alsa-lib-devel bison cups-devel dbus-devel flex fontconfig-devel gperf  libcap-devel libevent-devel libffi-devel \

libGLU-devel libgcrypt-devel libglvnd-devel libicu-devel libpciaccess-devel   libwebp-devel libXcomposite-devel libXcursor-devel libXi-devel \

libxkbcommon-devel  libXrandr-devel libxslt-devel libXt-devel libXtst-devel mesa-libEGL-devel nss-devel numactl-devel  patch pciutils-devel \

pulseaudio-libs-devel readline-devel re2c ruby systemd-devel tcl-devel tk-devel lapack-devel libsndfile-devel libstdc++-static libxkbcommon-x11-devel \

opus-devel re2c git perl-interpreter dmidecode hdparm libcurl-devel m4 perl-Time-HiRes valgrind rsync bzip2 make wget tar unzip gcc-c++ gcc gcc-gfortran \

kernel-devel kernel-headers kernel subversion gd-devel tmux bc java-1.8.0-openjdk.x86_64 rdma-core libibverbs glibc-langpack-de xauth git-lfs glx-utils \

unzip rdma-core-devel

~~~~~~

~~~~~~

dnf remove libidn2-devel

~~~~~~

## GCC

Below are the instructions for building gcc

### Get and unpack the source package

~~~~~~

export GCCVER=11.2.0

wget ftp://ftp.gnu.org/gnu/gcc/gcc-${GCCVER}/gcc-${GCCVER}.tar.xz

tar xf gcc-${GCCVER}.tar.xz && cd gcc-${GCCVER}

~~~~~~

### Patch as needed

No patching needs known as of now.

### Build

Define GCC_INSTS_DIR to be your tarball installation directory, e.g.,

~~~~~~

export GCC_INSTS_DIR=/contrib

~~~~~~

Usually GCC_INSTS_DIR=/contrib, but if one does not have root access, one has to put this in a user area. If one does have root access, one should execute the following commands:

~~~~~~

mkdir /internal /contrib /volatile

chmod 775 /internal /contrib /volatile

~~~~~~

Unpack gcc, go into the gcc source directory, and build according to the instructions below.

**gcc:**

You may need to set some addition options, e.g., 

* ```ADDLOPTS=--with-cpu=power9``` on linuxppc64le

* ```ADDLOPTS=--disable-multilib``` if 32bit glibc libraries are not installed.

~~~~~~

./contrib/download_prerequisites

mkdir build && cd build

../configure --prefix=$GCC_INSTS_DIR/gcc-${GCCVER} --enable-languages=c,c++,fortran --with-pic $ADDLOPTS

env LD_RUN_PATH=$GCC_INSTS_DIR/gcc-${GCCVER}/lib64 make -j 4

make install

chmod -R a+rX $GCC_INSTS_DIR/gcc-${GCCVER} # Perms issues seen in 9.4.0: 9.4.0/include-fixed/openssl/bn.h

# Alias as desired.

mkdir -p $GCC_INSTS_DIR/bin && cd $GCC_INSTS_DIR/bin

ln -s $GCC_INSTS_DIR/gcc-${GCCVER}/bin/{c,g}* .

~~~~~~

### Fix permissions

~~~~~~

chown -R root:root $GCC_INSTS_DIR/gcc-${GCCVER}

chmod -R g+rwX $GCC_INSTS_DIR/gcc-${GCCVER}

chmod -R o+rX $GCC_INSTS_DIR/gcc-${GCCVER}

find $GCC_INSTS_DIR/gcc-${GCCVER} -type d -exec chmod g+rs '{}' \;

~~~~~~

## LaTeX

LaTeX is needed for building documentation using Sphinx.

Bilder prefers the texlive-latex package. For gui usage, see texworks: http://www.tug.org/texworks

If you cannot install in the system area, you can download

~~~~~~

wget http://mirror.ctan.org/systems/texlive/tlnet/install-tl-unx.tar.gz

tar xzf install-tl-unx.tar.gz

cd install-tl-20230412 (date might be different)

./install-tl -no-gui

~~~~~~

This is now interactive, so set

* Set scheme to basic

** To do this type 'S' and hit enter.

** Then enter 'd' to set the scheme to basic.

** Type 'R' and hit enter to return to the main configuration page.

* Set TEXDIR = $CONTRIB_DIR/texlive

** Start by typing 'D' and hit enter.

** Then enter '1' to change TEXDIR.

** Type $CONTRIB_DIR/texlive and hit return.

** To return to configuration type 'R' and return.

* Set page size to Letter size

** Type 'O' and hit enter.

** Enter 'P'

** Return to main menu by typing 'R' and enter. 

* Install

** Type 'I' and hit enter to install.

* Put your texlive in your PATH.

** Edit you bashrc (vim ~/.bashrc)

** Add "export PATH=$PATH:<$CONTRIB_DIR>/texlive/bin/x86_64-linux/" (enter the full CONTRIB_DIR value)

** Exit and save. Then source ~/.bashrc.

To ensure you are using the correct texlive installation type "which pdflatex" and make sure it 

the one in $CONTRIB_DIR/texlive/bin/x86_64-linux/. If it is not the correct pdflatex, you may

have to remove the system version (sudo yum remove texlive). 

and then install the packages noted at

[[LaTeX packages needed by Bilder]]

## Language Local

The txbase unit tests need a german local package. It can be generated by the command:

~~~~~~~

sudo locale-gen de_DE.UTF-8

~~~~~~~

## Additional packages

Other parts of the toolchain introduce other package requirements.  Below are the initial lists.

## Qt Prerequisites

Qt-5 must be built with QtWebEngine, which particularly introduces requirements for other packages as noted at

* https://doc.qt.io/qt-5.10/qtwebengine-platform-notes.html

* https://wiki.qt.io/QtWebEngine/How_to_Try

* https://www.ics.com/blog/building-qtwebengine

* http://www.linuxfromscratch.org/blfs/view/svn/x/qtwebengine.html

Each of the above websites appears to have made assumptions about what is already installed, so as one encounters more workstations, one is likely to find yet another package missing.  This is our list so far.

## Vendor-specific version of graphics driver

If you are preparing a Linux machine for the VisIt Visualization package, the vendor-specific graphics driver for your graphics card should be installed.

By default, a generic graphics driver is installed.  On Fedora, the generic driver is "nouveau".

To determine if the nouveau driver is installed on your system, enter the command

~~~~~~

lsmod | grep nouv

~~~~~~

You will need to download and install the appropriate driver from your graphics card vendor.  This generally uninstalls the nouveau drivers.

## NVIDIA CUDA Toolkit

If you have a compatible GPU and wish to compile with nvcc code, you must first install the CUDA Toolkit. The linux installation page is 

~~~~~~

https://developer.nvidia.com/cuda-toolkit-70

~~~~~~

Download the applicable file. Your Linux distribution may or may not be natively supported for version 7.0. You may alternatively use version 7.5 if supported or an older version if necessary. As an example, we will include the steps known to work for Fedora 22. On Fedora 22, download the Fedora 21 Local RPM package. 

~~~~~~

cd <location of download>

sudo rpm -i cuda-repo-fedora21-7-0-local-7.0-28.x86_64.rpm   #<or whatever file you downloaded> 

sudo dnf install cuda

~~~~~~

Different Linux distributions will have different package handlers (here we use dnf, ubuntu has apt-get, fedora < 22 uses yum). You should now have the directory /usr/local/cuda-7.0. Add /usr/local/cuda-7.0/bin to your path. To ensure you have gotten the necessary components, type:

~~~~~~

which nvcc

~~~~~~

The output should be /usr/local/cuda-7.0/bin/nvcc. This will allow bilder to build GPU c++ code.

IMPORTANT NOTE: CUDA versions only support particular GCC versions, and the latest GCC may not support your CUDA.[[ CUDAgccCompatibility | See this wiki page for details ]]