make functions inline to compile

This is a workaround for multiple definition errors. Functions that are
not templated should be moved to the cpp files.

src/pcms/interpolator/adj_search.hpp

@@ -24,7 +24,7 @@ Real calculateDistance(const Real* p1, const Real* p2, const int dim)
   return dx * dx + dy * dy + dz * dz;
 }
 
-void checkTargetPoints(
+inline void checkTargetPoints(
   const Kokkos::View<pcms::GridPointSearch::Result*>& results)
 {
   Kokkos::fence();
@@ -43,7 +43,7 @@ void checkTargetPoints(
   printf("\n");
 }
 
-void printSupportsForTarget(const LO target_id, const Write<LO>& supports_ptr,
+inline void printSupportsForTarget(const LO target_id, const Write<LO>& supports_ptr,
                             const Write<LO>& nSupports,
                             const Write<LO>& support_idx)
 {
@@ -84,7 +84,7 @@ class FindSupports
                                    Write<Real>& radii2, bool is_build_csr_call);
 };
 
-void FindSupports::adjBasedSearch(Write<LO>& supports_ptr, Write<LO>& nSupports,
+inline void FindSupports::adjBasedSearch(Write<LO>& supports_ptr, Write<LO>& nSupports,
                                   Write<LO>& support_idx, Write<Real>& radii2,
                                   bool is_build_csr_call)
 {
@@ -226,7 +226,7 @@ void FindSupports::adjBasedSearch(Write<LO>& supports_ptr, Write<LO>& nSupports,
   }
 }
 
-void FindSupports::adjBasedSearchCentroidNodes(Write<LO>& supports_ptr,
+inline void FindSupports::adjBasedSearchCentroidNodes(Write<LO>& supports_ptr,
                                                Write<LO>& nSupports,
                                                Write<LO>& support_idx,
                                                Write<Real>& radii2,
@@ -357,7 +357,7 @@ struct SupportResults
   Write<Real> radii2; // squared radii of the supports
 };
 
-SupportResults searchNeighbors(Mesh& source_mesh, Mesh& target_mesh,
+inline SupportResults searchNeighbors(Mesh& source_mesh, Mesh& target_mesh,
                                Real& cutoffDistance, LO min_req_support = 12,
                                bool adapt_radius = true)
 {
@@ -459,7 +459,7 @@ SupportResults searchNeighbors(Mesh& source_mesh, Mesh& target_mesh,
   return support;
 }
 
-SupportResults searchNeighbors(Mesh& mesh, Real cutoffDistance,
+inline SupportResults searchNeighbors(Mesh& mesh, Real cutoffDistance,
                                LO min_support = 12, bool adapt_radius = true)
 {
   SupportResults support;