Change w3nco to w3emc

[edwardhartnett]

In the README we say that nemsio needs bacio and w3nco.

But it only seems to require bacio when it builds. Is this expected?

[edwardhartnett]

When I try and build nemsio for the UPP CI build, I get this:

CMake Error at CMakeLists.txt:37 (find_package):
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  By not providing "Findw3nco.cmake" in CMAKE_MODULE_PATH this project has
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-- Configuring incomplete, errors occurred!
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  asked CMake to find a package configuration file provided by "w3nco", but
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See also "/home/runner/work/EMC_post/EMC_post/nemsio/build/CMakeFiles/CMakeOutput.log".
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  CMake did not find one.
36

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  Could not find a package configuration file provided by "w3nco" with any of
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  the following names:
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    w3ncoConfig.cmake
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    w3nco-config.cmake

Looking at nemsio I see there is no git submodule and also no Findwenco in the cmake directory.

In the CMakeLists.txt file I see:

find_package(bacio REQUIRED)
find_package(w3nco REQUIRED)

[edwardhartnett]

I see this:

find .. -name CMakeLists.txt|xargs grep w3nco
../src/CMakeLists.txt:#depends on w3nco and bacio, but users must link their own version
../utils/CMakeLists.txt:target_link_libraries(nemsio_read nemsio bacio::bacio_4 w3nco::w3nco_d)
../utils/CMakeLists.txt:target_link_libraries(nemsio_get nemsio bacio::bacio_4 w3nco::w3nco_d)
../utils/CMakeLists.txt:target_link_libraries(nemsio_chgdate nemsio bacio::bacio_4 w3nco::w3nco_d)
../utils/CMakeLists.txt:target_link_libraries(mkgfsnemsioctl nemsio bacio::bacio_4 w3nco::w3nco_d)
../tests/CMakeLists.txt:target_link_libraries( ${exeName} PUBLIC nemsio bacio::bacio_4 w3nco::w3nco_d)
../tests/CMakeLists.txt:  LINK_LIBRARIES nemsio bacio::bacio_4 w3nco::w3nco_d
../CMakeLists.txt:find_package(w3nco REQUIRED)

So apparently it is needed for the build. However, it should now be changed to the emc version of this library.

[kgerheiser]

Need a release of w3emc with the combined library.

[edwardhartnett]

OK, the w3emc release has happened, so we need to fix this and do a new release with the new dependency.