now compiling again,

CMakeLists.txt

@@ -344,7 +344,7 @@ if (LLAMA_MPI)
     if (MPI_C_FOUND)
         message(STATUS "MPI found")
         set(GGML_HEADERS_MPI ggml-mpi.h)
-        set(GGML_SOURCES_MPI ggml-mpi.c ggml-mpi.h)
+        set(GGML_SOURCES_MPI ggml-mpi.cpp ggml-mpi.h)
         add_compile_definitions(GGML_USE_MPI)
         add_compile_definitions(${MPI_C_COMPILE_DEFINITIONS})
         if (NOT MSVC)

Makefile

@@ -502,7 +502,7 @@ ggml-metal.o: ggml-metal.m ggml-metal.h
 endif # LLAMA_METAL
 
 ifdef LLAMA_MPI
-ggml-mpi.o: ggml-mpi.c ggml-mpi.h
+ggml-mpi.o: ggml-mpi.cpp ggml-mpi.h
 	$(CC) $(CFLAGS) -c $< -o $@
 endif # LLAMA_MPI
 
@@ -537,16 +537,16 @@ $(info )
 # Build library
 #
 
-ggml.o: ggml.c ggml.h ggml-cuda.h
+ggml.o: ggml.cpp ggml.h ggml-cuda.h
 	$(CXX)  $(CXXFLAGS)   -c $< -o $@
 
-ggml-alloc.o: ggml-alloc.c ggml.h ggml-alloc.h
+ggml-alloc.o: ggml-alloc.cpp ggml.h ggml-alloc.h
 	$(CXX)  $(CXXFLAGS)   -c $< -o $@
 
-ggml-backend.o: ggml-backend.c ggml.h ggml-backend.h
+ggml-backend.o: ggml-backend.cpp ggml.h ggml-backend.h
 	$(CXX)  $(CXXFLAGS)   -c $< -o $@
 
-ggml-quants.o: ggml-quants.c ggml.h ggml-quants.h
+ggml-quants.o: ggml-quants.cpp ggml.h ggml-quants.h
 	$(CXX) $(CXXFLAGS)    -c $< -o $@
 
 OBJS += ggml-alloc.o ggml-backend.o ggml-quants.o

ggml-quants.cpp

@@ -6595,8 +6595,8 @@ void ggml_vec_dot_q5_K_q8_K(const int n, float * __restrict__ s, const void * __
 void ggml_vec_dot_q6_K_q8_K(const int n, float * __restrict__ s, const void * __restrict__ vx, const void * __restrict__ vy) {
     assert(n % QK_K == 0);
 
-    const block_q6_K * __restrict__ x = vx;
-    const block_q8_K * __restrict__ y = vy;
+    const block_q6_K * __restrict__ x = (const block_q6_K *)vx;
+    const block_q8_K * __restrict__ y = (const block_q8_K *)vy;
 
     const int nb = n / QK_K;