Re: [Plplot-devel] PLplot Debian package

[Ole S. <deb...@li...>]

Dear Alan,

On 13.07.2017 11:27, Alan W. Irwin wrote:
>> I already have a few small questions. First language bindings: Currently
>> the following are disabled:
>>
>> ENABLE_ada:             OFF
>> ENABLE_d:               OFF
>> ENABLE_octave:          OFF
>> ENABLE_pdl:             OFF
>> ENABLE_pyqt5:           OFF
>>
>> Would it be useful to (re-)enable any of them? And what would I need to
>> add as dependencies then?
> 
> You should _not_ disable the first 3 which are well supported (at least
> on Linux).  On Debian Jessie, ENABLE_ada, ENABLE_d, and ENABLE_octave
> require the gnat, gdc, and liboctave-dev packages be installed.

ADA seems to work fine, I enabled it. With D, I also have to install libgphobos-dev (right?),
but even then I get the following error (on newer Debian systems, f.e. Stretch,
or unstable):

-- D Compiler Install Prefix (use D_PATH env var to override): /usr
-- Check for working D compiler: /usr/bin/gdc
-- Check for working D compiler: /usr/bin/gdc -- works
-- Check for working Phobos
-- Check for working Phobos -- unavailable
-- Check for working Tango
-- Check for working Tango -- unavailable
CMake Error at cmake/modules/language_support/cmake/CMakeTestDCompiler.cmake:175 (MESSAGE):
  Phobos is required for this project, but it is not available!
Call Stack (most recent call first):
  cmake/modules/d.cmake:53 (enable_language)
  cmake/modules/plplot.cmake:493 (include)
  CMakeLists.txt:135 (include)
[...]
Determining if Phobos works failed with the following output:
Change Dir: /build/plplot-5.12.0+dfsg/obj-x86_64-linux-gnu/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_b0e79/fast"
make[2]: Entering directory '/build/plplot-5.12.0+dfsg/obj-x86_64-linux-gnu/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_b0e79.dir/build.make CMakeFiles/cmTC_b0e79.dir/build
make[3]: Entering directory '/build/plplot-5.12.0+dfsg/obj-x86_64-linux-gnu/CMakeFiles/CMakeTmp'
Building D object CMakeFiles/cmTC_b0e79.dir/testDCompiler.o
/usr/bin/gdc   -fversion=Phobos    -o CMakeFiles/cmTC_b0e79.dir/testDCompiler.o -c /build/plplot-5.12.0+dfsg/obj-x86_64-linux-gnu/CM
Linking D executable cmTC_b0e79
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_b0e79.dir/link.txt --verbose=1
/usr/bin/gdc   -fversion=Phobos   -Wl,-z,relro -Wl,--as-needed  CMakeFiles/cmTC_b0e79.dir/testDCompiler.o -o cmTC_b0e79  -lgphobos2 
/usr/bin/ld: cannot find -lgphobos2
collect2: error: ld returned 1 exit status
[...]

Do you have an idea what to do here? Did I use the wrong library?

I also tried octave, but get the warning

-- OCTAVE = /usr/bin/octave
-- MKOCTFILE = /usr/bin/mkoctfile
-- OCTAVE_CONFIG = /usr/bin/octave-config
-- OCTAVE_VERSION = 4.2.1
-- WARNING: Octave-4 has been found which is likely to lead to build errors for PLplot.
-- WARNING: Disabling Octave binding. If you want to use that component of PLplot you
   should try installing Octave-3 (which works well with PLplot) or else try the
   experimental cmake option -DTRY_OCTAVE4=ON

Debian (Stretch and later) has Octave 4 only, so I am a bit worried enabling this
for the moment. Would you recommend it despite of the warning?

Best regards

Ole