[Conan] Added NetCDF package.

Added simplified FindNetCDF.cmake to cmake submodule.
Have not tested this with system-installed netcdf.

cmake-modules @ 5893e3eb

-Subproject commit 0068e164eb5ab1e16c931e50094846789b49cdc0
+Subproject commit 5893e3eb3aaec104f86ba81ee90b7e9279b74c3f

scripts/cmake/ConanSetup.cmake

@@ -74,6 +74,10 @@ if(OGS_BUILD_GUI)
     )
 endif()
 
+if(OGS_USE_NETCDF)
+    set(CONAN_REQUIRES ${CONAN_REQUIRES} netcdf-cxx/4.3.1@bilke/testing)
+endif()
+
 conan_check(VERSION 1.3.0)
 
 message(STATUS "Third-party libraries:")

scripts/cmake/Find.cmake

@@ -105,6 +105,12 @@ if(OGS_BUILD_GUI)
     endif()
 endif()
 
+if(OGS_USE_NETCDF)
+    set(NETCDF_ROOT ${CONAN_NETCDF-C_ROOT})
+    set(NETCDF_CXX_ROOT ${CONAN_NETCDF-CXX_ROOT})
+    find_package(NetCDF REQUIRED)
+endif()
+
 # lapack
 find_package(LAPACK QUIET)