Fix intel warnings

Src/FFT/AMReX_FFT_Helper.H

@@ -21,12 +21,17 @@
 #  endif
 #  include <hip/hip_complex.h>
 #elif defined(AMREX_USE_SYCL)
-#  include <oneapi/mkl/dfti.hpp>
+#  if __has_include(<oneapi/mkl/dft.hpp>) // oneAPI 2025.0
+#    include <oneapi/mkl/dft.hpp>
+#else
+#    include <oneapi/mkl/dfti.hpp>
+#  endif
 #else
 #  include <fftw3.h>
 #endif
 
 #include <algorithm>
+#include <complex>
 #include <memory>
 #include <utility>
 #include <variant>

Src/FFT/AMReX_FFT_Poisson.H

@@ -21,6 +21,17 @@ public:
         : m_geom(geom), m_bc(bc), m_r2x(geom.Domain(),bc)
     {}
 
+    template <typename FA=MF, std::enable_if_t<IsFabArray_v<FA>,int> = 0>
+    explicit Poisson (Geometry const& geom)
+        : m_geom(geom),
+          m_bc{AMREX_D_DECL(std::make_pair(Boundary::periodic,Boundary::periodic),
+                            std::make_pair(Boundary::periodic,Boundary::periodic),
+                            std::make_pair(Boundary::periodic,Boundary::periodic))},
+          m_r2x(geom.Domain(),m_bc)
+    {
+        AMREX_ALWAYS_ASSERT(m_geom.isAllPeriodic());
+    }
+
     void solve (MF& soln, MF const& rhs);
 
 private:

Tests/FFT/Poisson/main.cpp

@@ -146,7 +146,7 @@ int main (int argc, char* argv[])
             // We know that the sum of our rhs is zero for non-Dirichlet
             // cases. Otherwise, we should shift rhs so that its sum is zero.
 
-            FFT::Poisson fft_poisson(geom, fft_bc);
+            FFT::Poisson fft_poisson(geom); //, fft_bc);
             fft_poisson.solve(soln, rhs);
 
             MultiFab phi(soln.boxArray(), soln.DistributionMap(), 1, 1);