Fix duplicate cppfat in SUPPORTED_BACKENDS and duplicate block in mgOnGpuConfig.h

Agent-Logs-Url: https://github.com/madgraph5/madgraph4gpu/sessions/db0d537e-e75b-4d0b-ba4c-b7f11fb41df6

Co-authored-by: oliviermattelaer <[email protected]>

Author: Copilot

epochX/cudacpp/CODEGEN/PLUGIN/CUDACPP_SA_OUTPUT/madgraph/iolibs/template_files/gpu/cudacpp_config.mk

@@ -34,7 +34,7 @@ endif
 
 # Check that the user-defined choices of BACKEND, FPTYPE, HELINL, HRDCOD are supported
 # (NB: use 'filter' and 'words' instead of 'findstring' because they properly handle whitespace-separated words)
-override SUPPORTED_BACKENDS = cuda hip cppnone cppsse4 cppavx2 cpp512y cpp512z cppauto cppfat cppfat
+override SUPPORTED_BACKENDS = cuda hip cppnone cppsse4 cppavx2 cpp512y cpp512z cppauto cppfat
 ifneq ($(words $(filter $(BACKEND), $(SUPPORTED_BACKENDS))),1)
   $(error Invalid backend BACKEND='$(BACKEND)': supported backends are $(foreach backend,$(SUPPORTED_BACKENDS),'$(backend)'))
 endif

epochX/cudacpp/CODEGEN/PLUGIN/CUDACPP_SA_OUTPUT/madgraph/iolibs/template_files/gpu/mgOnGpuConfig.h

@@ -315,13 +315,4 @@ ispoweroftwo( int n )
 #define mg5amcCpu MGONGPU_SIMD_NAMESPACE
 #endif
 
-// For fat binary builds: when MGONGPU_SIMD_NAMESPACE is defined externally (e.g. -DMGONGPU_SIMD_NAMESPACE=mg5amcCpu_avx2),
-// redefine mg5amcCpu to the versioned namespace for SIMD-sensitive translation units (CPPProcess, color_sum).
-// This allows compiling those translation units multiple times with different -march flags,
-// each time placing all symbols in a distinct versioned namespace, for runtime dispatch in a fat binary.
-// Files that are NOT SIMD-sensitive (MatrixElementKernels, BridgeKernels, fbridge etc.) are compiled
-// without MGONGPU_SIMD_NAMESPACE and therefore continue to use the standard mg5amcCpu namespace.
-#define mg5amcCpu MGONGPU_SIMD_NAMESPACE
-#endif
-
 #endif // MGONGPUCONFIG_H