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INSTALL.html
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<html>
<head>
<title>How to build NCL and NCAR Graphics version 6.5.0 from source code</title>
</head>
</head>
<h1>How to build NCL and NCAR Graphics version 6.5.0 from source code</h1>
<p>
<i>July 15, 2018</i><p>
<b>The latest version of this document can be found at
<a href="http://www.ncl.ucar.edu/Download/build_from_src.shtml">http://www.ncl.ucar.edu/Download/build_from_src.shtml</a>.</b>
<p>
This is an all-encompassing document on:
<ul>
<li>How to set up your environment to build NCL and NCAR Graphics from
source code.
<li>What external software packages you need, which are optional, and
how to build them.
<li>How to build and test NCL and NCAR Graphics.
</ul>
<p>
NCL and NCAR Graphics can only be built on UNIX systems.
<p>
<blockquote>
<b>We highly recommend that you install NCL via conda or using a
precompiled NCL binary, rather than attempting a build from source
code.<br>
If you tried a precompiled binary and ran into problems, you can email
your problem to
the <a href="http://mailman.ucar.edu/mailman/listinfo/ncl-install">ncl-install</a>
email list (you must subscribe first).</b>
</blockquote>
<p>
If you decide to go forth with building from source code, good luck!
<p>
<b>Note on building NCAR Graphics only:</b> you have the option during
the build process to indicate you do not want to build NCL,
effectively building just NCAR Graphics. This simplifies the build
somewhat, since you can get by with not having to install most, if
any, of the external software packages listed below. If you are
already familiar with building NCAR Graphics from source code, then
all the instructions you know from before are the same. When you run
"./Configure", be sure to answer "n" when it asks if you want to build
NCL.
<p>
Before you start building NCL/NCAR Graphics, look over this document
to see what functionality you want to include. This will help you
figure out what packages you'll need and what options they need to be
built with. Check if you already have any of these packages on your
system <i>and if they were built with the correct options</i>.
<p>
Some of the required software libraries may already be on your
system. On Linux and Mac systems, you can use a command called
"locate" to look for libraries.
<p>
<pre>
locate libcairo
</pre>
<p>
NCL/NCAR Graphics has been successfully built on 32 and 64 bit Linux
systems, Macs (32 or 64 bit) running MacOSX, and Windows running
32-bit Cygwin.
<p>
<a href="http://mailman.ucar.edu/mailman/listinfo/ncl-install">Email
ncl-install</a> if you have any problems understanding this document
or building any of this software. We've included
a <A HREF="#Troubleshooting">troubleshooting</A> section for common
problems encountered when building NCL and/or NCAR Graphics.
<p>
<i>Note that in the instructions below, "NCL" will sometimes be used
to mean both NCL and NCAR Graphics. If something is for NCAR Graphics
only, we try to indicate this.</i>
<hr>
<h2>Table of Contents</h2>
<p>
<UL>
<LI><A HREF="#WhatsNew">What's new in build instructions since last
NCL release</A>
<LI><A HREF="#Troubleshooting">Visit the Troubleshooting section in
advance</A>
<LI><A HREF="#SetupBuildEnvironment">Set up build environment for
NCL</A>
<UL>
<LI><A HREF="#CompilersNeeded">Compilers needed to build NCL</A>
<LI><A HREF="#SetEnvVars">Set environment variables</A>
<LI><A HREF="#X11Libs">Install X11 developer libraries and include files</A>
</UL>
<LI><A HREF="#BuildNonOptionalSoftware">Download and build
non-optional external software</A><br>
<UL>
<LI><A HREF="#JPEG">JPEG</A> (9b)
<LI><A HREF="#ZLIB">ZLIB</A> (1.2.11)
<LI><A HREF="#cairo">cairo</A> (1.14.12)
<UL>
<LI><A HREF="#PNG">PNG</A> (1.6.34)
<LI><A HREF="#pkgconfig">pkg-config</A> (0.29.2)
<LI><A HREF="#freetype">FreeType</A> (2.9.1)
<LI><A HREF="#pixman">pixman</A> (0.34.0)
</UL>
<LI><A HREF="#NetCDF">NetCDF</A> (4.6.1)
<UL>
<LI><A HREF="#szip">szip</A> (2.1.1)
<LI><A HREF="#HDF5">HDF-5</A> (1.10.1)
<LI><A HREF="#libcurl">libcurl</a> (7.60.0)
</UL>
<LI><A HREF="#HDF4">HDF-4</A> (4.2.13)
</UL>
<LI><A HREF="#BuildOptionalSoftware">Download and build optional
external software</A><br>
<UL>
<LI><A HREF="#GRIB2">GRIB2</A>
<UL>
<LI><A HREF="#Jasper">Jasper</a> (1.900.1)
<LI><A HREF="#g2clib">g2clib</a> (1.6.0-patch)
</UL>
<LI><A HREF="#GDAL_PROJ4">GDAL/PROJ.4</A>
<UL>
<LI><A HREF="#PROJ4">PROJ.4</A> (5.1.0)
<LI><A HREF="#GDAL">GDAL</A> (2.2.4)
</UL>
<LI><A HREF="#HDFEOS2">HDF-EOS 2</A> (2.20)
<LI><A HREF="#HDFEOS5">HDF-EOS 5</A> (1.16)
<LI><A HREF="#Triangle">Triangle</A>
<LI><A HREF="#UDUNITS2">UDUNITS-2</A> (2.2.26)
<LI><A HREF="#Vis5D">Vis5D+</A>
</UL>
<LI><A HREF="#GetNCLSourceCode">Download the source code for NCL</A>
<LI><A HREF="#CustomizeNCLBuildEnvironment">Customize NCL build
environment</A>
<UL>
<LI><A HREF="#TestIfSystemRecognized">Test if your system is
recognized by NCL build environment</A>
<LI><A HREF="#GetConfigFileName">Get name of configuration file</A>
<LI><A HREF="#ModifySystemConfigFile">Modify system configuration file
to change default values</A> (may not be necessary)
</UL>
<LI><A HREF="#BuildNCLFromSource">Build NCL from source code</A>
<UL>
<LI><A HREF="#RunConfigure">Run Configure script</A>
<UL>
<LI><A HREF="#Linux">Special note for Linux systems</A>
<LI><A HREF="#MacOSX">Special note for MacOSX systems</A>
<LI><A HREF="#Windows">Special note for Windows systems</A>
</UL>
<LI><A HREF="#StartBuildAndInstall">Start the build and install process</A>
<LI><A HREF="#CheckTheInstallation">Check that the installation was
successful</A>
</UL>
<LI><A HREF="#SetUpEnvironment">Set up your environment to run NCL
and/or NCAR Graphics</A>
<LI><A HREF="#TestInstallation">Test the NCL and/or NCAR Graphics
installation</A>
<LI><A HREF="#Troubleshooting">Troubleshooting and known problems</A>
<LI><A HREF="#AppendixA">Appendix A - Modifying configuration files to
recognize your system</A>
<UL>
<LI><A HREF="#ModifyYmakeFile">Modify the "ymake" file to recognize
your system</A>
<LI><A HREF="#SetUpConfigFile">Set up a configuration file</A>
<LI><A HREF="#ExampleConfigFile">Example configuration file</A>
<LI><A HREF="#ModifyMachineDependentRoutines">Modify machine-dependent
routines</A>
</UL>
<LI><A HREF="#AppendixB">Appendix B - General information on build process</A>
<UL>
<LI><A HREF="#ConfigurationFiles">Configuration files</A>
<LI><A HREF="#RestartingInstallation">Restarting the installation</A>
<LI><A HREF="#ymake">ymake</A>
<LI><A HREF="#MachineDependentRoutines">machine-dependent support
routines</A>
</UL>
</UL>
</UL>
<A NAME="WhatsNew"></A>
<HR>
<H2>What's new in build instructions since last NCL release</H2>
<p>
The instructions for building haven't changed much since version
5.2.1. Here's what's new about the source code instructions since
version 6.0.0 of NCL:
<p>
<ol>
<li>The graphical display model has been upgraded, and hence
building <a href="#cairo">cairo</a> and some supplemental
software is no longer optional.
<p>
<li>The
new <a href="http://www.ncl.ucar.edu/Applications/ESMF.shtml">ESMF
regridding software</a> in NCL uses an application called
"<a href="https://www.earthsystemcog.org/projects/regridweightgen/">ESMF_RegridWeightGen</a>",
which is part of
the <a href="http://www.earthsystemmodeling.org/">Earth System
Modeling Framework</a>. A serial version of this application is
included when you download a precompiled NCL binary. If you want to
build a parallelized version of this application, then see the
<a href="http://www.earthsystemmodeling.org/esmf_releases/public/last/ESMF_usrdoc/">Quick
Start</a> section of the ESMF User Guide.
<p>
<li>There are experimental calls to OpenMP code in NCL V6.2.0 and
higher; by default the code is compiled with "-fopenmp", but you can
remove this option from the appropriate configuration file.
</ol>
<p>
<A NAME="SetupBuildEnvironment"></A>
<HR>
<H2>Set up build environment for NCL</H2>
<p>
<A NAME="CompilersNeeded"></A>
<b>Compilers needed to build NCL</b><p>
To build NCL, you need a Fortran compiler that can compile both
Fortran 77 and 90, an ANSI C compiler, and a C++ compiler. In general,
we recommend using the GNU (gcc, gfortran, and g++) compilers, and
using version 7.x or higher. For NCL V6.5.0, NCL was
built with the GNU and Intel compilers. In the past we
have successfully used <a href="http://gcc.gnu.org/">gcc</a>,
<a href="http://gcc.gnu.org/wiki/GFortran">gfortran</a>,
<a href="http://g95.org/">g95</a>,
<a href="http://software.intel.com/en-us/articles/intel-compilers/">Intel
Fortran/C</a>, and <a href="http://www.pgroup.com/">Portland
Group</a>. <i>You cannot use g77 as a Fortran compiler</i>.
<p>
<A NAME="SetEnvVars"></A>
<b>Set up environment variables for external software</b><p>
Most of the external software packages that NCL and NCAR Graphics
depend on are configured using a "configure" script. These "configure"
scripts recognize a number of standard environment variables that
allow you to set compilers and compile options.
<p>
Decide what compilers and compile options you want to use, and then
set the following environment variables as appropriate:
<p>
<TABLE BORDER=1 CELLPADDING=3>
<TR>
<TH bgcolor=beige>Environment variable name <TH bgcolor=beige>Description
<TH bgcolor=beige>Example
<TR>
<TD><b>CC</b> <TD>C compiler
<TD>bash/ksh:<br>
export CC=gcc<br>
csh/tcsh:<br>
setenv CC gcc
<TR>
<TD><b>CFLAGS</b> <TD>C compile flags
<TD>bash/ksh:<br>
export CFLAGS='-O -ansi -std=c99 -fopenmp -fPIC'<br>
export CFLAGS='-O -m64 -ansi -std=c99 -fopenmp -fPIC'<br>
csh/tcsh:<br>
setenv CFLAGS '-O -ansi -std=c99 -fopenmp -fPIC'<br>
setenv CFLAGS '-O -m64 -std=c99 -ansi -fopenmp -fPIC'
<TR>
<TD><b>FC</b></b> <TD>Fortran compiler
<TD>bash/ksh:<br>
export FC=gfortran<br>
csh/tcsh:<br>
setenv FC gfortran
<TR>
<TD><b>FFLAGS</b> <TD>Fortran compile flags
<TD>bash/ksh:<br>
export FFLAGS='-fPIC -fopenmp'<br>
csh/tcsh:<br>
setenv FFLAGS '-fPIC -fopenmp'
<TR>
<TD><b>F90</b> <TD>Fortran 90 compiler
<TD>bash/ksh:<br>
export FC=gfortran<br>
csh/tcsh:<br>
setenv FC gfortran
<TR>
<TD><b>F90FLAGS</b> <TD>Fortran 90 compile flags
<TD>bash/ksh:<br>
export F90FLAGS='-fPIC -fopenmp'<br>
export F90FLAGS='-m64 -fPIC -fopenmp'<br>
csh/tcsh:<br>
setenv F90FLAGS '-fPIC -fopenmp'<br>
setenv F90FLAGS '-m64 -fPIC -fopenmp'
<TR>
<TD><b>CXX</b> <TD>C++ compiler
<TD>bash/ksh:<br>
export CXX=g++<br>
csh/tcsh:<br>
setenv CXX g++
<TR>
<TD><b>CXXFLAGS</b> <TD>C++ compile flags
<TD>bash/ksh:<br>
export CXXFLAGS='-O -ansi -std=c99 -fopenmp -fPIC'<br>
export CXXFLAGS='-O -m64 -ansi -fopenmp -fPIC'<br>
csh/tcsh:<br>
setenv CXXFLAGS '-O -ansi -std=c99 -fopenmp -fPIC'<br>
setenv CXXFLAGS '-O -m64 -ansi -std=c99 -fopenmp -fPIC'
<TR>
<TD><b>CPPFLAGS</b> <TD>preprocessor compile flags<br>
<TD>bash/ksh:<br>
export CPPFLAGS='-DNDEBUG'<br>
csh/tcsh:<br>
setenv CXXFLAGS '-DNDEBUG'
</TABLE>
<p>
<A NAME="X11Libs"></A>
<HR>
<b>Install X11 developer libraries and include files</b><p>
In order to build some of the X applications that are part of NCL
(like <a href="http://www.ncl.ucar.edu/Document/Tools/idt.shtml">idt</a>),
you must have some of the X11 developer's libraries installed on your
system. At a minimum, you should have the following libraries (and
associated include files) installed on your system: X11, Xaw, Xext,
Xm, Xmu, Xt.
<p>
These libraries are usually installed as part of an X developer's
package, and will reside in a directory like /usr/lib, /usr/lib64,
/usr/X11R6/lib, or /usr/X11R6/lib64.<P>
For Linux systems, you can get these libraries using a command like
one of the following:
<pre>
sudo apt-get install x11-dev
sudo apt-get install xorg-dev
sudo apt-get install libx11-dev
yum install libx11-devel
</pre>
<p>
<A NAME="BuildNonOptionalSoftware"></A>
<HR>
<H2>Download and build non-optional external software</H2>
<p>
The software listed below is not optional if you plan to build NCL.
If you are building NCAR Graphics only, then read the blurb next to
each software package name to see if it is needed.
<p>
<blockquote>
<i>Once you download and install any external software to use with
NCL, you must comply with the license of that software, regardless of
what NCL's license is.</i>
</blockquote>
<p>
<b>Note:</b> it makes things easier if you install all of the external
software needed (with the exception of the X11 libraries and X11
include files) to the same parent directory. This will be important
later when you have to tell the NCL build system where all the
external software has been installed.
<p>
We will use <i>/usr/local</i> in all of our examples below for
installing external software. You may need to be "root" in order to
have permission to install software to /usr/local. If you don't have
the "root" password, then you may want to use a directory other than
/usr/local, like a directory under your home directory.
<p>
You may not need to install all of this software from source code! If
you are on a Linux system, you might be able to use "yum" or "apt-get"
to download the desired software. On Macs, you might be able to
use <a href="http://www.macports.org/">MacPorts</a>. Under Cygwin, the
"setup.exe" program can be used.
<p>
Each package is listed below, along with the version we used to build
NCL V6.5.0 on our own systems. In most cases you don't need to have
the exact version of the software we used, but it's a good idea to
match them as much as possible. We've included the "wget" command we
used for the retrieving the source code, where applicable.
<ul>
<A NAME="JPEG"></A>
<li><a href="http://www.ijg.org/">JPEG</a> (9b) - not
needed if you are only doing an NCAR Graphics build.<p>
Download version 9b
<p>
<pre>
wget http://www.ijg.org/files/jpegsr9b.zip
</pre>
<p>
Once you have the jpeg source code, you can build and install it
with:
<p>
<pre>
./configure --disable-shared --prefix=/usr/local
make all install
</pre>
You may additionally need do this to install the libraries and include files:
<p>
<pre>
make install-lib
make install-headers
</pre>
<p>
<A NAME="ZLIB"></A>
<li><a href="http://www.zlib.net/">zlib</a> (1.2.11) - not optional,
but mostly likely already available on your system
<p>
Download version 1.2.11 or later.
<p>
<pre>
wget https://zlib.net/zlib-1.2.11.tar.gz
</pre>
<p>
Once you have the zlib source code, you can build and install it
with:
<p>
<pre>
./configure --prefix=/usr/local --static
make all install
</pre>
<p>
<A NAME="cairo"></A>
<b>cairo software</b>
<p>
Cairo and its supplemental packages may already be on your system
(Linux, MacOSX, and Cygwin), so check this before you start building
them.<p>
You can also install many of these packages on Linux systems using a
package installer like <a href="http://yum.baseurl.org/">yum</a>
<a href="http://linux.die.net/man/8/apt-get">apt-get</a>, or
<a href="http://en.opensuse.org/YaST_Software_Management">YaST</a>,
and on a Mac system using <a href="http://www.macports.org/">MacPorts</a>.
The package(s) to install have names like "libcairo-devel",
"libpixman-devel", etc. It is very likely that once you install
"libcairo-devel", the other packages will get installed automatically,
so check for this before you install all the packages.
<p>
<ul>
<A NAME="PNG"></A>
<a href="http://www.libpng.org/pub/png/libpng.html">PNG</a> library
(1.6.34) - required
<p>
Download version 1.6.x (not 1.4.x or 1.5.x). Version 1.2 will work as well,
but we don't recommend this version.
<p>
<pre>
wget http://prdownloads.sourceforge.net/libpng/libpng-1.6.34.tar.gz
</pre>
<p>
Once you have the libpng source code, you can build and install it
with:
<p>
<pre>
./configure --with-pic --disable-shared --prefix=/usr/local
make all install
</pre>
<p>
<a name="pkgconfig"></a>
<li><a href="http://pkgconfig.freedesktop.org/releases/">pkg-config</a>
(0.29) - Download version 0.29 or later.
<p>
<pre>
wget http://pkgconfig.freedesktop.org/releases/pkg-config-0.29.tar.gz
</pre>
<p>
Once you have the pkg-config source code, you can build and install it
with:
<p>
<pre>
./configure --prefix=/usr/local
make all install
</pre>
<p>
Make sure that the location of pkg-config is on your search path and
library path. For example, if you installed pkg-config to
"/usr/local", then you also need to do the following:
<p>
From tcsh or csh:
<p>
<pre>
setenv PKG_CONFIG_PATH /usr/local/lib/pkgconfig
set path=(/usr/local/bin $path)
</pre>
<p>
From ksh or bash:
<p>
<pre>
export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig
export PATH=/usr/local/bin:$PATH
</pre>
<p>
[On a Mac, use DYLD_LIBRARY_PATH instead of LD_LIBRARY_PATH.]
<p>
<a name="freetype"></a>
<li><a href="http://freetype.sourceforge.net/index2.html">FreeType</a>
(2.9.1) - Download version 2.9 or later.
<p>
<pre>
wget https://sourceforge.net/projects/freetype/files/freetype2/2.9.1/freetype-2.9.1.tar.gz
</pre>
<p>
Once you have the FreeType source code, you can build and install it
with:
<p>
<pre>
./configure --prefix=/usr/local --disable-shared
make all install
</pre>
<p>
<a name="pixman"></a>
<li><a href="http://cairographics.org/releases/">pixman</a>
(0.34.0) - Download version 0.34.x or later.
<p>
<pre>
wget https://www.cairographics.org/releases/LATEST-pixman-0.34.0
</pre>
<p>
Once you have the pixman source code, you can build and install it
with:
<p>
Macs:<p>
<pre>
./configure --prefix=/usr/local --disable-openmp --disable-arm-iwmmxt \
--disable-dependency-tracking
make all install
</pre>
<p>
Linux, MacOS, others:<p>
<pre>
./configure --prefix=/usr/local
make all install
</pre>
<p>
<li><a href="http://cairographics.org/releases/">cairo</a> (1.14.12) -
Download version 1.14.12 or later. Older versions have known bugs.
<p>
<pre>
wget http://cairographics.org/releases/cairo-1.14.12.tar.xz
</pre>
<p>
You can't build cairo until you have installed FreeType, pixman, and
pkg-config.
<p>
Make sure the "pkg-config" you built is on your search path.
For example, if you installed it to /usr/local, then /usr/local/bin
needs to be in your search path.
<p>
From tcsh or csh:
<p>
<pre>
setenv PATH /usr/local/bin:$PATH
which pkg-config
</pre>
<p>
From ksh or bash:
<p>
<pre>
export PATH=/usr/local/bin:$PATH
which pkg-config
</pre>
Once you have the cairo source code, you can build and install it
with:
<p>
<pre>
./configure --prefix=/usr/local --enable-quartz-font=no --enable-quartz=no \
--enable-shared=no --enable-static=yes
make all install
</pre>
<p>
</ul>
<p>
<A NAME="NetCDF"></A>
<li><a
href="http://www.unidata.ucar.edu/software/netcdf/">NetCDF</a> - do
not install if you are only doing an NCAR Graphics build.
<p>
Download
version <a href="http://www.unidata.ucar.edu/downloads/netcdf/index.jsp">4.6.1</a>.
<p>
Note that <glossary term="netCDFclassic">NetCDF classic</glossary>
(sometimes referred to as NetCDF-3)
and <glossary term="netCDF4">NetCDF-4</glossary> are different <b>file
formats</b>. NetCDF software version 4.<i>x</i> supports
both NetCDF-3 and NetCDF-4 file formats, but as noted below, you may
have to set some flags in order to get support for both. NetCDF-4
files are actually written as HDF5 under the hood.<p>
<glossary term="netCDF4classic">Classic NetCDF-4</glossary> is another
supported format, which looks like NetCDF-3 files to the user, but
they allow for compression for potentially smaller files. Classic
NetCDF-4 files cannot be read by programs that only support NetCDF-3.
<p>
NetCDF versions 4.1.x and later support OPenDAP, and this is built in
by default. NetCDF 4.1.x also includes the UDUNITS-2 software, but the
stand-alone UDUNITS-2 library is more up-to-date so we recommend this
over the one that comes with
NetCDF. See <a href="#UDUNITS2">instructions on building and
installing UDUNITS-2</a>.
<p>
This software can be built different ways: with or without "classic"
NetCDF-4 support, and with or without OPeNDAP support. Classic
NetCDF-4 support gives you file compression capabilities. Full
NetCDF-4 support gives you groups, unlimited dimensions, file compression,
and compound structures. OPeNDAP support allows you to read NetCDF
files served on the web by OPeNDAP servers. We recommend building with
at least classic NetCDF-4 support turned on. The instructions
below show methods for building classic NetCDF-4 without OPenDAP
support, and classic NetCDF-4 with OPenDAP support.
<p>
The NetCDF website has up-to-date intructions for building this
software, so we recommend you visit their
<a href="https://www.unidata.ucar.edu/software/netcdf/docs/getting_and_building_netcdf.html">Getting
and building NetCDF</a> page. In particular, you can look at these two methods for building
NetCDF:
<ol>
<li><a href="https://www.unidata.ucar.edu/software/netcdf/docs/getting_and_building_netcdf.html#build_default">Building netCDF-4 and the Remote Data Client from source</a>
<li><a href="https://www.unidata.ucar.edu/software/netcdf/docs/getting_and_building_netcdf.html#build_classic">Building netCDF with Classic Library Only</a>
</ol>
<p>
The above links include information about where to get the additional
software required. We've provided these links below for convenience:
<ul>
<LI>zlib - see <a href ="#ZLIB">instructions</a> above.
<p>
<A NAME="szip"></A>
<li><a
href="http://www.hdfgroup.org/HDF5/release/obtain5.html">szip</a> -
Download version 2.1 or later. (Click on "External Libraries Used By HDF5".)
<p>
The szip 2.<i>x</i> software is available from same page where you
download HDF-5. Use this version, rather than the one on the official
szip page.
<p>
<pre>
./configure --prefix=/usr/local --enable-netcdf-4 --disable-shared
make all install
</pre>
<p>
<A NAME="HDF5"></A>
<li><a
href="http://www.hdfgroup.org/HDF5/release/obtain5.html">HDF-5</a>
(1.10.1) - Download version 1.10.x or later.
<p>
<pre>
wget https://support.hdfgroup.org/ftp/HDF5/current/src/hdf5-1.10.1.tar.gz
</pre>
<p>
<pre>
./configure --with-zlib=/usr/local --with-szlib=/usr/local --prefix=/usr/local
make all install >& make-output
</pre>
<p>
<A NAME="libcurl"></A>
<li><a href="http://curl.haxx.se">libcurl</a> (7.60.0)
<p>
<pre>
wget https://curl.haxx.se/download/curl-7.60.0.tar.gz
</pre>
<p>
Download version 7.60.x or later. Once you have the source code, you
can build and install it with:
<p>
<pre>
./configure --prefix=/usr/local --with-zlib=/usr/local --with-pic
make all install >& make-output
</pre>
<p>
</ul>
<p>
<A NAME="HDF4"></A>
<li><a href="http://www.hdfgroup.org/products/hdf4/">HDF-4</a> -
(4.2.13) if you want to build NCAR Graphics only, then HDF-4 is optional,
unless you need HDF support in <a
href="http://www.ncl.ucar.edu/Document/Tools/ctrans.shtml">ctrans</a>,
<a
href="http://www.ncl.ucar.edu/Document/Tools/ictrans.shtml">ictrans</a>,
and <a
href="http://www.ncl.ucar.edu/Document/Tools/idt.shtml">idt</a>.
<p>
Download version 4.2.x or later. (HDF version 5.<i>x.y</i> is a
different software package).
<p>
<pre>
wget https://support.hdfgroup.org/ftp/HDF/HDF_Current/src/hdf-4.2.13.tar
</pre>
<p>
<b>Note:</b> As of NCL V6.2.0, you no longer need to install the HDF
include files to a special directory (in older versions you
had to use a special "--includedir" option).
<p>
Build and install HDF-4 with:
<p>
<pre>
./configure --prefix=/usr/local --with-zlib=/usr/local \
--with-jpeg=/usr/local --disable-netcdf
make all install
</pre>
Note: if you are having problems with "make", one user reported that
he used "gmake" instead.
<p>
The paths used for the "--with-zlib" and "--with-jpeg" options must be
set to whatever you used above for these two software packages. If
you choose to build HDF-4 with the szip compression library, be sure
to add "--with-szip=/usr/local" (or whatever location you used when
building it) to the configuration process.
<p>
</ul>
<p>
<A NAME="BuildOptionalSoftware"></A>
<HR>
<H2>Download and build optional external software, if needed</H2>
<p>
Again, as with the above section, it makes things easier if you
install all of the external software needed to the same parent
directory. We will use <i>/usr/local</i> in all of our examples below
for installing external software.
<p>
<A NAME="GRIB2"></A>
<b>GRIB2 software</b> - not needed if you are only doing an NCAR
Graphics build.<p>
If you need support for reading <a
href="http://www.nco.ncep.noaa.gov/pmb/docs/grib2/grib2_doc.shtml">GRIB2</a>
files, then you will need to download and install the following
packages.
<p>
<ul>
<a name="Jasper"></a>
<li><a href="http://www.ece.uvic.ca/~mdadams/jasper/">Jasper</a>
(1.900.1) - Download version 1.900 or later.
<p>
Once you have the Jasper source code, you can build and install it
with:
<p>
<pre>
./configure --prefix=/usr/local
make all install
</pre>
<p>
<li>libpng - see <a href ="#PNG">instructions</a> above.
<p>
<a name="g2clib"></a>
<li>g2clib - normally you would download this software
from <a href="http://www.nco.ncep.noaa.gov/pmb/codes/GRIB2/">http://www.nco.ncep.noaa.gov/pmb/codes/GRIB2/</a>,
but there were a few bugs we had to fix. Download
the <a href="http://www.ncl.ucar.edu/Download/files/g2clib-1.6.0-patch.tar.gz">g2clib-1.6.0-patch.tar.gz</a>
file instead.
<p>
<pre>
wget http://www.ncl.ucar.edu/Download/files/g2clib-1.6.0-patch.tar.gz
</pre>
<p>
Once you have this modified g2clib source code, make changes to
"makefile" to:
<ol>
<li>change the compiler (CC line) and flags (CFLAGS lines)
<li>make sure the DEFS line has both "-DUSE_JPEG2000" and "-DUSE_PNG"
<li>if on a 64-bit system (x86_64, ia64, etc), make sure the DEFS line
also has "-D__64BIT__" (that's two underscores before and after)
<li>add the appropriate location of the Jasper/libpng include files to the
"INC" line
</ol>
<p>
Now type:
<p>
<pre>
make all
mv libgrib2c.a /usr/local/lib
cp grib2.h /usr/local/include
</pre>
<p>
</ul>
<p>
<A NAME="GDAL_PROJ4"></A>
<b>GDAL/PROJ.4 software</b> - not needed if you are only doing an NCAR
Graphics build.<p>
If you need support for reading shapefile, mapinfo, TIGER, etc, file
formats, then you will need to download and install the following
two packages.
<p>
<ul>
<a name="PROJ4"></a>
<li><a href="http://trac.osgeo.org/proj/">PROJ.4</a> (5.1.0) -
Cartographic Projections Library - Download version 5.x or later.
<p>
<pre>
wget http://download.osgeo.org/proj/proj-5.1.0.tar.gz
</pre>
<p>
Once you have the PROJ.4 source code, you can build and install it
with:
<p>
<pre>
./configure --prefix=/usr/local --enable-static=yes --enable-shared=no
make all install
</pre>
<p>
<a name="GDAL"></a>
<li><a href="http://www.gdal.org/">GDAL</a> (2.2.4) - Geospatial Data
Abstraction Library - Download version 2.2.x or later.
<p>
<pre>
wget http://download.osgeo.org/gdal/2.2.4/gdal-2.2.4.tar.gz
</pre>
<p>