fix: mars2grib guard HAVE_ECKIT_GEO

[mcakircali]

Description

mars2grib_libs must be guarded with HAVE_ECKIT_GEO

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• All authors agree to the Contributor License Agreement.
• The code follows the project's coding standards.
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[tweska]

eckit::geo is not an optional dependency for the mars2grib encoder. Correct me if I am wrong, but I think this change makes it "optional" and then it will just crash the build.

I think instead we must set the condition HAVE_ECKIT_GEO here:

metkit/CMakeLists.txt

Lines 65 to 68 in cbfcd75

	ecbuild_add_option( FEATURE MARS2GRIB
	DEFAULT ON
	CONDITION HAVE_GRIB
	DESCRIPTION "Build the MARS2GRIB encoder" )

[MircoValentiniECMWF]

I fully agree with Kevin

[danovaro]

thanks @mcakircali

[tweska]

Thanks for the fix @mcakircali!

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 73.36%. Comparing base (cbfcd75) to head (7ff20fe).
⚠️ Report is 2 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff              @@
##           develop     #210       +/-   ##
============================================
+ Coverage    62.02%   73.36%   +11.33%     
============================================
  Files          303      126      -177     
  Lines        11672     8137     -3535     
  Branches      1049      778      -271     
============================================
- Hits          7240     5970     -1270     
+ Misses        4432     2167     -2265     

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