optional spdlog

support/CMakeLists.txt

@@ -35,8 +35,12 @@ target_include_directories(support INTERFACE
 $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/support>
 $<INSTALL_INTERFACE:include>)
 
-find_package(spdlog REQUIRED)
-target_link_libraries(support PUBLIC spdlog::spdlog)
+find_package(spdlog QUIET)
+if (spdlog_FOUND)
+  add_definitions(-DSPDLOG_ENABLED)
+  target_compile_definitions(support INTERFACE -DSPDLOG_ENABLED)
+  target_link_libraries(support PUBLIC spdlog::spdlog)
+endif()
 target_link_libraries(support PUBLIC Kokkos::kokkos)
 target_link_libraries(support PUBLIC MPI::MPI_CXX)
 if(ENABLE_CABANA)

support/ppPrint.h

@@ -1,16 +1,30 @@
 #pragma once
 
-#include "spdlog/spdlog.h"
+#ifdef SPDLOG_ENABLED
+  #include "spdlog/spdlog.h"
+#endif
+
+#include <Kokkos_Core.hpp>
 
 namespace pumipic {
 
   template<typename... Args>
   void pPrintError(const char* fmt, const Args&... args) {
-    spdlog::error(fmt, args...);
+    #ifdef SPDLOG_ENABLED
+      spdlog::error(fmt, args...);
+    #else
+      fprintf(stderr, fmt, args...);
+    #endif
   }
 
   template<typename... Args>
   void pPrintInfo(const char* fmt, const Args&... args) {
-    spdlog::info(fmt, args...);
+    #ifdef SPDLOG_ENABLED
+      spdlog::info(fmt, args...);
+    #else
+      Kokkos::printf(fmt, args...);
+    #endif
   }
+
+
 }