$\"Dislin$ <\/a>

DISLIN\u2019s Map-Plot example app (map_f90) in Ubuntu 20.04<\/p><\/div>\n

In both cases your app is dependent on a gfortran and DISLIN installation on target machines.<\/p>\n

Drawbacks of shared linking<\/h2>\n
\u201cgf95link\u201d and linking via \u201c-ldislin(_d)<\/span>\u201d links the shared<\/em> DISLIN library to your program. That reduces the footprint of your application on your hard disk. However if you intend to run this program on other machines, you have to install DISLIN on these machines, too. It is also depended on a gfortran installation on these machines.<\/p>\n
To avoid both issues go to the next chapter and build your program statically instead.<\/p>\n

<\/a>Build programs against the static DISLIN library<\/h2>\n
To build your DISLIN app against the static DISLIN library you have to install missing X11-libraries:<\/p>\n
sudo apt install libx11-dev libxt-dev libgl1-mesa-dev<\/pre>\n
For compiling and static linking type for map_f90 (and for other single precision apps):<\/p>\n
gfortran map_f90.f90 -static-libgfortran -no-pie -I\/usr\/local\/dislin\/gf \/usr\/local\/dislin\/libdislin.a -lXm -lXt -lX11 -lGL -o map_f90<\/pre>\n
If you use double precision real variables, type:<\/p>\n
gfortran doubleprec-app.f90 -static-libgfortran -no-pie -I\/usr\/local\/dislin\/gf\/real64 \/usr\/local\/dislin\/libdislin_d.a -lXm -lXt -lX11 -lGL -o doubleprec-app<\/pre>\n
instead.The options are described below:<\/p>\n\n\n\n\n\n\n\n\n
-static-libgfortran<\/em><\/td>\n Links the static gfortran library to the app rather than the shared one (default) and makes it independent of a gfortran installation on the target machines.<\/td>\n<\/tr>\n
-no-pie
\n<\/em><\/td>\n Solves the problem that the file manager misinterprets the executable as a shared library (see below<\/a>). Otherwise it prevents it from running from your file manager.<\/td>\n<\/tr>\n
-I<\/em><\/td>\n Path to the module files<\/td>\n<\/tr>\n
\/usr\/local\/dislin\/libdislin(_d).a<\/em><\/td>\n Links the static DISLIN library instead of the shared one, when using -ldislin(_d)<\/span>. Target machines do not need DISLIN installed.<\/td>\n<\/tr>\n
-lXm -lXt -lX11 -lGL<\/em><\/td>\n Links the shared Modif libraries (static ones are not provided). Still Motif 4 dependency left.<\/td>\n<\/tr>\n
-o<\/em><\/td>\n Specify the file name of the app (here map_f90). Without this option your binary is named a.out<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
Now you can start your GUI-program from your file manager or terminal. Furthermore you can copy it to any other machines without DISLIN and Gfortran installed. But you still need the Motif4 libraries<\/a> and some other libraries. Install packages libxm4<\/em> and libquadmath0<\/em> on these machines.<\/p>\n
The -static<\/span> option would normally solve that but some Motif libraries are not provided in a static form, so this option fails in this case.<\/p>\n
But they are still some issues left which we take care of in the next chapter.<\/p>\n
Distribution-independent DISLIN applications?<\/h3>\n
For a long time it was complicated to provide distribution-independent applications in GNU\/Linux. In Ubuntu it was no different, of course.<\/p>\n
There were several problems:<\/p>\n
\n
The Motif libraries depend on a lot of XServer libraries (libXm, libXt, etc.) which are not all provided in a static form (.a-libs) or depend themselves on other libraries. That means it is not possible to link statically against Motif out-of-the-box.<\/li>\n
Furthermore if you use the map capability of DISLIN in your app the maps will not be displayed on target machines even when you built it statically. They are not stored in the library file.<\/li>\n
Additionally there is a dependency to the libquadmath0<\/em>-package.<\/li>\n
When run your app on older distros you may get glibc-version problems.
\nYou may work around a bit following the suggestion of E.T. at Stack Overflow: \u201cJust build on the system with the oldest GLIBC you still want to support<\/a>.\u201d
\nAs far as I know Ubuntu provides Motif 4 in the universe repository since Natty Narwhal (11.04).<\/del> You may run this Ubuntu version in a virtualization environment just for compiling\/linking. That means your app will work from Ubuntu 11.04 onwards.<\/li>\n<\/ul>\n
For an Only-Ubuntu-package you just have the package dependencies of libxm4<\/em> and libquadmath0<\/em>, as long as you do not make use of the map capabilities of DISLIN.<\/p>\n
But in newer Ubuntu versions you may use Snap<\/a> or Flatpak<\/a> or AppImages<\/a> to package distribution-independent packages. This may solve all the problem regarding distribution dependencies but I have not tried it yet.<\/p>\n
Troubleshooting<\/h2>\n
<\/a>\u201cNo application installed for shared library\u201d<\/h3>\n
Newer gfortran versions uses -fPIC as default. This causes the file manager to interpret the binary as a shared library instead of an executable and you are not able to run your app from the file manager (but from the terminal). You get the error:<\/p>\n
\u201cCould Not Display xxx. There is no application installed for \u201cshared library\u201d files. Do you want to search for an application to open this file?\u201d<\/em><\/p>\n
$\"Sharable$ <\/a><\/p>\n
To avid this use the link option -no-pie<\/span> as described above.<\/p>\n
\u201cError while loading shared libraries\u201d<\/h3>\n
If you get an error while linking against the shared library, like:<\/p>\n
\u201cerror while loading shared libraries: libdislin.so.11: cannot open shared object file: No such file or directory<\/em>\u201d<\/p>\n
you have to specify the environment variable \u201cLD_LIBRARY_PATH\u201d to make DISLIN find its shared libraries. On current supportet Ubuntus you should not see this error.<\/p>\n
However, for a system-wide setup start a text editor (here \u201cnano\u201d) with root privileges and open the file bash.bashrc<\/span>. Open a terminal and type:<\/p>\n
sudo nano \/etc\/bash.bashrc<\/pre>\n
and append the following lines:<\/p>\n
LD_LIBRARY_PATH=\/usr\/local\/dislin\r\nexport LD_LIBRARY_PATH<\/pre>\n
Save bash.bashrc<\/span>. You just need to restart your terminal (window).<\/p>\n
For a single user setup just do this in ~\/.bashrc<\/span> in your home directory instead of \/etc\/bash.bashrc<\/span>.<\/p><\/blockquote>\n
Acknowledgment<\/h2>\n
Thanks to Helmut Michels, the author of DISLIN, for his assistance. He helped me out in this version, too. Great support. If you have any question regarding DISLIN go to dislin-users<\/a> in Google Groups. He is around there.<\/p>\n
Related Links<\/h2>\n
\n
DISLIN Homepage<\/a><\/li>\n
Test Installations for DISLIN and Linux<\/a> \u2013 DISLIN Homepage<\/li>\n
Google Group dislin-users<\/a><\/li>\n
Using DISLIN to make a GUI<\/a> \u2013 Dr. Clive Page (University of Leicester)<\/li>\n
German Wikibooks<\/a> for DISLIN<\/li>\n
Install DISLIN 10.6 on Ubuntu 16.04 Xenial Xerus<\/a>\u00a0\u2013 Hanis\u2019s Omnium Gatherum<\/li>\n
I<\/a>nstall DISLIN 10.4 on Ubuntu 14.04 Trusty Tahr<\/a>\u00a0\u2013 Hanis\u2019s Omnium Gatherum<\/li>\n<\/ul>\n
<\/p><\/body>","protected":false},"excerpt":{"rendered":"
<\/span> <\/a><\/li>
DISLIN is a very nice and well-documented 2-D and 3-D plotting framework for Fortran and some other programming languages. Furthermore DISLIN provides some widgets to […]<\/p>\n","protected":false},"author":3,"featured_media":4705,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[25,16,6,45,67,8],"tags":[82,201,111,19,103,70,144,104],"class_list":["post-4700","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-english","category-fortran","category-gnu-linux","category-how-tos","category-programming","category-ubuntu","tag-dislin","tag-focal-fossa","tag-fortran","tag-gfortran","tag-gnu-linux","tag-gui","tag-plotten","tag-ubuntu"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/blog.hani-ibrahim.de\/en\/wp-json\/wp\/v2\/posts\/4700","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.hani-ibrahim.de\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.hani-ibrahim.de\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.hani-ibrahim.de\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.hani-ibrahim.de\/en\/wp-json\/wp\/v2\/comments?post=4700"}],"version-history":[{"count":62,"href":"https:\/\/blog.hani-ibrahim.de\/en\/wp-json\/wp\/v2\/posts\/4700\/revisions"}],"predecessor-version":[{"id":4770,"href":"https:\/\/blog.hani-ibrahim.de\/en\/wp-json\/wp\/v2\/posts\/4700\/revisions\/4770"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.hani-ibrahim.de\/en\/wp-json\/wp\/v2\/media\/4705"}],"wp:attachment":[{"href":"https:\/\/blog.hani-ibrahim.de\/en\/wp-json\/wp\/v2\/media?parent=4700"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.hani-ibrahim.de\/en\/wp-json\/wp\/v2\/categories?post=4700"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.hani-ibrahim.de\/en\/wp-json\/wp\/v2\/tags?post=4700"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}