From 0f110f5bd89d6e4fbd37146873fed44d54a4e655 Mon Sep 17 00:00:00 2001
From: Axel Huebl <axel.huebl@plasma.ninja>
Date: Tue, 7 Jan 2025 18:39:39 -0800
Subject: [PATCH] Unconditionally Search for Both

---
 Tools/CMake/FindAMReXFFTW.cmake | 66 ++++++++++++++++-----------------
 1 file changed, 33 insertions(+), 33 deletions(-)

diff --git a/Tools/CMake/FindAMReXFFTW.cmake b/Tools/CMake/FindAMReXFFTW.cmake
index a276c53f831..0f6455b3a18 100644
--- a/Tools/CMake/FindAMReXFFTW.cmake
+++ b/Tools/CMake/FindAMReXFFTW.cmake
@@ -102,47 +102,47 @@ if(NOT AMReX_FFTW_SEARCH IN_LIST AMReX_FFTW_SEARCH_VALUES)
 endif()
 mark_as_advanced(AMReX_FFTW_SEARCH)
 
-# floating point precision suffixes: float, double and quad precision
-if(AMReX_PRECISION STREQUAL "DOUBLE")
-    set(HFFTWp "")
-else()
-    set(HFFTWp "f")
-endif()
+# Create imported target
+add_library(AMReX::FFTW INTERFACE IMPORTED GLOBAL)
 
-if(AMReX_FFTW_SEARCH STREQUAL CMAKE)
-    find_package(FFTW3${HFFTWp} CONFIG REQUIRED)
-    set(AMReX_FFTW_LIBRARY_DIRS "${FFTW3${HFFTWp}_LIBRARY_DIRS}")
-    message(STATUS "Found FFTW: ${FFTW3${HFFTWp}_DIR} (found version \"${FFTW3${HFFTWp}_VERSION}\")")
-else()
-    find_package(PkgConfig REQUIRED QUIET)
-    pkg_check_modules(fftw3${HFFTWp} REQUIRED IMPORTED_TARGET fftw3${HFFTWp})
-    message(STATUS "Found FFTW: ${fftw3${HFFTWp}_PREFIX}")
-    if(fftw3${HFFTWp}_LIBRARY_DIRS)
-        set(AMReX_FFTW_LIBRARY_DIRS "${fftw3${HFFTWp}_LIBRARY_DIRS}")
+function(fftw_find_precision HFFTWp)
+    if(AMReX_FFTW_SEARCH STREQUAL CMAKE)
+        find_package(FFTW3${HFFTWp} CONFIG REQUIRED)
+        set(AMReX_FFTW_LIBRARY_DIRS "${FFTW3${HFFTWp}_LIBRARY_DIRS}")
+        message(STATUS "Found FFTW: ${FFTW3${HFFTWp}_DIR} (found version \"${FFTW3${HFFTWp}_VERSION}\")")
     else()
-        set(AMReX_FFTW_LIBRARY_DIRS "${fftw3${HFFTWp}_LIBDIR}")
+        find_package(PkgConfig REQUIRED QUIET)
+        pkg_check_modules(fftw3${HFFTWp} REQUIRED IMPORTED_TARGET fftw3${HFFTWp})
+        message(STATUS "Found FFTW: ${fftw3${HFFTWp}_PREFIX}")
+        if(fftw3${HFFTWp}_LIBRARY_DIRS)
+            set(AMReX_FFTW_LIBRARY_DIRS "${fftw3${HFFTWp}_LIBRARY_DIRS}")
+        else()
+            set(AMReX_FFTW_LIBRARY_DIRS "${fftw3${HFFTWp}_LIBDIR}")
+        endif()
     endif()
-endif()
 
-# Create imported target
-add_library(AMReX::FFTW INTERFACE IMPORTED GLOBAL)
-if(AMReX_FFTW_SEARCH STREQUAL CMAKE)
-    target_link_libraries(AMReX::FFTW INTERFACE FFTW3::fftw3${HFFTWp})
-else()
-    target_link_libraries(AMReX::FFTW INTERFACE PkgConfig::fftw3${HFFTWp})
-endif()
+    if(AMReX_FFTW_SEARCH STREQUAL CMAKE)
+        target_link_libraries(AMReX::FFTW INTERFACE FFTW3::fftw3${HFFTWp})
+    else()
+        target_link_libraries(AMReX::FFTW INTERFACE PkgConfig::fftw3${HFFTWp})
+    endif()
 
-if(AMReX_OMP)
-    if(AMReX_FFTW_IGNORE_OMP)
-        message(STATUS "FFTW: Requested to IGNORE OpenMP support")
+    if(AMReX_OMP)
+        if(AMReX_FFTW_IGNORE_OMP)
+            message(STATUS "FFTW: Requested to IGNORE OpenMP support")
+        else()
+            fftw_check_omp("${AMReX_FFTW_LIBRARY_DIRS}" "${HFFTWp}")
+        endif()
     else()
-        fftw_check_omp("${AMReX_FFTW_LIBRARY_DIRS}" "${HFFTWp}")
+        message(STATUS "FFTW: Did NOT search for OpenMP support (AMReX_OMP is not set)")
     endif()
-else()
-    message(STATUS "FFTW: Did NOT search for OpenMP support (AMReX_OMP is not set)")
-endif()
+endfunction()
+
+# floating point precision suffixes: we request float and double precision
+fftw_find_precision("")
+fftw_find_precision("f")
 
 # Vars for CMake config
 include(FindPackageHandleStandardArgs)
 find_package_handle_standard_args(AMReXFFTW
-    HANDLE_COMPONENTS)
\ No newline at end of file
+    HANDLE_COMPONENTS)