CMake not able to find gfortran installed via apt-get

[chaosphere2112]

I just did a build on a clean Ubuntu VM and installed gfortran using the gfortran-4.9 package via apt-get. This creates a binary in /usr/bin/ called gfortran-4.9; we should be able to identify that as a valid fortran compiler, but instead I'm given a message about not being able to locate one. Since apt-get really is the easiest way to install things on ubuntu, I'm thinking we should handle this case.

[chaosphere2112]

@aashish24

[aashish24]

who complains about not finding gfortran? Is it coming from ESMF? I am using apt-get gfortran and it works for me.

[chaosphere2112]

I did sudo apt-get install gfortran-4.9 (to make sure it didn't grab a 5.0 version), and got this:

[INFO] We reset your path to: /home/fries2/tmpbuild/install/Externals/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games
[INFO]BUILDMODE:DEFAULT
[INFO] version 2.7.10 of PYTHON is required by UVCDAT
[INFO] Building python at /home/fries2/tmpbuild/install/bin/python
-- CMAKE_Fortran_COMPILER_ID = ''.
CMake Warning at contrib/sciMake/sciFuncsMacros.cmake:23 (message):
  Variable CONFIG_SUMMARY is not defined, sciPrintString is unable to write
  to the summary file.
Call Stack (most recent call first):
  contrib/sciMake/sciFortranFindVersion.cmake:12 (sciPrintString)
  contrib/sciMake/sciFortranChecks.cmake:14 (include)
  CMake/cdat_modules/esmf_pkg.cmake:26 (include)
  CMakeLists.txt:495 (include)


CMake Error at contrib/sciMake/sciFortranFindVersion.cmake:160 (message):
  Unknown compiler ID, .
Call Stack (most recent call first):
  contrib/sciMake/sciFortranChecks.cmake:14 (include)
  CMake/cdat_modules/esmf_pkg.cmake:26 (include)
  CMakeLists.txt:495 (include)


-- Configuring incomplete, errors occurred!
See also "/home/fries2/tmpbuild/CMakeFiles/CMakeOutput.log".
See also "/home/fries2/tmpbuild/CMakeFiles/CMakeError.log".

[chaosphere2112]

(when attempting to cmake)

[jbeezley]

I'm sure CMake relies on finding a known compiler name like gfortran, f95, etc. That is what you get when you install the versionless gfortran package. If you want to manage alternate compiler versions, I would recommend either setting an alias or using Ubuntu's update-alternatives.

[chaosphere2112]

Ah, that makes sense... kind of annoying if they decide to update the gfortran package to 5+, since that will break ESMF. Oh well, we can burn that bridge when we get there.