Re: [Plplot-general] Working on PLplot 5.14 and gtk-fortran interfacing...

[Vincent M. <vin...@po...>]

Hi Alan and Ole,

thank you for your answers. Understanding a problem is half the solution.

This is the report of my last efforts:

1) I have uninstalled and purged from my Debian Sid virtual machine all 
the PLplot packages:

# apt remove libplplot-dev plplot-doc plplot-tcl-dev octave-plplot python3-plplot-qt
# apt autoremove
# apt purge libplplot-dev plplot-doc plplot-tcl-dev octave-plplot python3-plplot-qt libplplot-lua libplplot-ocaml plplot-tcl plplot-tcl-bin

2) I have downloaded PLplot 5.14.0 from SourceForge, built it and 
installed it (see attached files):

$ mkdir build_pl && cd build_pl
$ cmake ../plplot-5.14.0 >& cmake.out
$ make VERBOSE=1 >& make.out
$ make VERBOSE=1 install >& make_install.out
$ sudo make VERBOSE=1 install >& make_install.out

3) I have built the Fortran examples and tested successfully some of them:

$ cd /usr/local/share/plplot5.14.0/examples/fortran/
$ sudo make
$ ./x08f

Plotting Options:
  < 1> xwin       X-Window (Xlib)
  < 8> xcairo     Cairo X Windows Driver

The examples work fine (I don't know why this time I have no problem 
concerning the X server).

4) But now when I build the gtk-fortran project (gtk2devel branch), 
CMake does not find anymore PLplot:

osboxes@osboxes:~/gtk-fortran/build$ cmake -D CMAKE_BUILD_TYPE=debug ..
-- The Fortran compiler identification is GNU 8.3.0
-- Check for working Fortran compiler: /usr/bin/f95
-- Check for working Fortran compiler: /usr/bin/f95  -- works
-- Detecting Fortran compiler ABI info
-- Detecting Fortran compiler ABI info - done
-- Checking whether /usr/bin/f95 supports Fortran 90
-- Checking whether /usr/bin/f95 supports Fortran 90 -- yes
-- Compiler: GNU 8.3.0 /usr/bin/f95
-- Build type is: debug
-- Compilation flags: -g -pthread -Wall -pedantic -std=f2008 -Wtabs -fcheck=all -fbacktrace -Wno-unused-dummy-argument
-- Found GTK2_GTK: /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so
-- Could NOT find Doxygen (missing: DOXYGEN_EXECUTABLE)
-- PLPLOT not found: PLPLOT integration and examples will not be built
-- Configuring done
-- Generating done
-- Build files have been written to: /home/osboxes/gtk-fortran/build

This is the part of the main CMakeLists.txt where we are looking for PLplot:

# PLplot
if (NOT EXCLUDE_PLPLOT)
#  find_package(PlplotF95 QUIET)
   find_package(plplot)
   set(HAVE_LIBPLPLOTF95D ${PLPLOT_FOUND})
   if(PLPLOT_FOUND)
     set(LIBRARIES ${LIBRARIES} ${PLPLOT_LIBRARIES})
     include_directories(${PLPLOT_INCLUDE_DIR})
     include_directories(${PLPLOT_MODULE_DIR})
     set(CMAKE_REQUIRED_LIBRARIES "${PLPLOT_LIBRARIES}")
     set(CMAKE_REQUIRED_INCLUDES "${PLPLOT_INCLUDE_DIR}; ${PLPLOT_MODULE_DIR}")
     check_fortran_source_compiles("
  program tw
  use plplot
  implicit none

  real(kind=plflt) :: w = 0.5_plflt
  call plinit()
  call plwidth(w)
  end program tw" NEW_PLPLOT
     )
     check_fortran_source_compiles("
  program tdef
  use plplot
  implicit none

  integer :: i = PLESC_DEVINIT
  end program tdef" NEW_PLPLOT_DEFS
     )
   else(PLPLOT_FOUND)
     message(STATUS "PLPLOT not found: PLPLOT integration and examples will not be built")
   endif(PLPLOT_FOUND)
else(NOT EXCLUDE_PLPLOT)
   message(STATUS "PLPLOT Excluded as command option")
endif(NOT EXCLUDE_PLPLOT)

Best regards

Vincent