Merge pull request #99 from PFLAREProject/gpu_flags_makefile

Ensure existing gpu c flags are passed through to the compile

Author: stevendargaville

Makefile

@@ -18,6 +18,9 @@ CFLAGS_INPUT := $(CFLAGS)
 FFLAGS_INPUT := $(FFLAGS)
 CPPFLAGS_INPUT := $(CPPFLAGS)
 FPPFLAGS_INPUT := $(FPPFLAGS)
+CUDAC_FLAGS_INPUT := $(CUDAC_FLAGS)
+HIPC_FLAGS_INPUT := $(HIPC_FLAGS)
+SYCLC_FLAGS_INPUT := $(SYCLC_FLAGS)
 
 # Directories we want
 INCLUDEDIR  := include
@@ -120,6 +123,9 @@ CFLAGS += $(CFLAGS_INPUT)
 FFLAGS += $(FFLAGS_INPUT)
 CPPFLAGS += $(CPPFLAGS_INPUT)
 FPPFLAGS += $(FPPFLAGS_INPUT)
+CUDAC_FLAGS += $(CUDAC_FLAGS_INPUT)
+HIPC_FLAGS += $(HIPC_FLAGS_INPUT)
+SYCLC_FLAGS += $(SYCLC_FLAGS_INPUT)
 
 # Output the library - either static or dynamic
 ifeq ($(PETSC_USE_SHARED_LIBRARIES),0)