diff --git a/llama/Makefile b/llama/Makefile
index 589eb6de..f7c3bf08 100644
--- a/llama/Makefile
+++ b/llama/Makefile
@@ -43,6 +43,7 @@ $(RUNNER_TARGETS):
 
 clean:
 	rm -rf $(BUILD_DIR) $(DIST_RUNNERS) $(PAYLOAD_RUNNERS)
+	go clean -cache
 
 clean-payload:
 	rm -rf $(addprefix $(RUNNERS_PAYLOAD_DIR)/, $(RUNNER_TARGETS) metal cpu cpu_avx cpu_avx2)
diff --git a/llama/llama.go b/llama/llama.go
index f36d54a6..c3e3ab87 100644
--- a/llama/llama.go
+++ b/llama/llama.go
@@ -3,38 +3,59 @@ package llama
 /*
 #cgo CFLAGS: -O2 -std=c11 -DGGML_BUILD=1 -DNDEBUG -DLOG_DISABLE_LOGS -DGGML_USE_LLAMAFILE
 #cgo CXXFLAGS: -O2 -std=c++11 -DGGML_BUILD=1 -DNDEBUG -DLOG_DISABLE_LOGS -DGGML_USE_LLAMAFILE
-#cgo darwin,arm64 CFLAGS: -DGGML_USE_METAL -DGGML_USE_ACCELERATE -DGGML_METAL_EMBED_LIBRARY -DACCELERATE_NEW_LAPACK -DACCELERATE_LAPACK_ILP64 -DGGML_USE_BLAS
-#cgo darwin,arm64 CXXFLAGS: -DGGML_USE_METAL -DGGML_USE_ACCELERATE -DGGML_METAL_EMBED_LIBRARY -DACCELERATE_NEW_LAPACK -DACCELERATE_LAPACK_ILP64 -DGGML_USE_BLAS
-#cgo darwin,arm64 LDFLAGS: -framework Foundation -framework Metal -framework MetalKit -framework Accelerate
+#cgo amd64,avx CFLAGS: -mavx
+#cgo amd64,avx CXXFLAGS: -mavx
+#cgo amd64,avx2 CFLAGS: -mavx2 -mfma
+#cgo amd64,avx2 CXXFLAGS: -mavx2 -mfma
+#cgo amd64,f16c CFLAGS: -mf16c
+#cgo amd64,f16c CXXFLAGS: -mf16c
+#cgo amd64,fma CFLAGS: -mfma
+#cgo amd64,fma CXXFLAGS: -mfma
+#cgo avx CFLAGS: -mavx
+#cgo avx CXXFLAGS: -mavx
+#cgo avx2 CFLAGS: -mavx2 -mfma -mf16c
+#cgo avx2 CXXFLAGS: -mavx2 -mfma -mf16c
+#cgo cuda CFLAGS: -fPIE -DGGML_USE_CUDA -DGGML_CUDA_DMMV_X=32 -DGGML_CUDA_PEER_MAX_BATCH_SIZE=128 -DGGML_CUDA_MMV_Y=1 -DGGML_BUILD=1
+#cgo cuda CFLAGS: -fPIE -DGGML_USE_CUDA -DGGML_CUDA_DMMV_X=32 -DGGML_CUDA_PEER_MAX_BATCH_SIZE=128 -DGGML_CUDA_MMV_Y=1 -DGGML_BUILD=1
+#cgo cuda CXXFLAGS: -DGGML_USE_CUDA -DGGML_CUDA_DMMV_X=32 -DGGML_CUDA_PEER_MAX_BATCH_SIZE=128 -DGGML_CUDA_MMV_Y=1 -DGGML_BUILD=1
+#cgo cuda CXXFLAGS: -DGGML_USE_CUDA -DGGML_CUDA_DMMV_X=32 -DGGML_CUDA_PEER_MAX_BATCH_SIZE=128 -DGGML_CUDA_MMV_Y=1 -DGGML_BUILD=1
+#cgo cuda_v11 LDFLAGS: -lggml_cuda_v11 -L/usr/local/cuda-11/lib64
+#cgo cuda_v12 LDFLAGS: -lggml_cuda_v12 -L/usr/local/cuda-12/lib64
 #cgo darwin,amd64 CFLAGS: -Wno-incompatible-pointer-types-discards-qualifiers
 #cgo darwin,amd64 CXXFLAGS: -Wno-incompatible-pointer-types-discards-qualifiers
 #cgo darwin,amd64 LDFLAGS: -framework Foundation
 #cgo darwin,amd64,avx2 CFLAGS: -DGGML_USE_ACCELERATE -DACCELERATE_NEW_LAPACK -DACCELERATE_LAPACK_ILP64
 #cgo darwin,amd64,avx2 CXXFLAGS: -DGGML_USE_ACCELERATE -DACCELERATE_NEW_LAPACK -DACCELERATE_LAPACK_ILP64
 #cgo darwin,amd64,avx2 LDFLAGS: -framework Accelerate
+#cgo darwin,arm64 CFLAGS: -DGGML_USE_METAL -DGGML_USE_ACCELERATE -DGGML_METAL_EMBED_LIBRARY -DACCELERATE_NEW_LAPACK -DACCELERATE_LAPACK_ILP64 -DGGML_USE_BLAS
+#cgo darwin,arm64 CXXFLAGS: -DGGML_USE_METAL -DGGML_USE_ACCELERATE -DGGML_METAL_EMBED_LIBRARY -DACCELERATE_NEW_LAPACK -DACCELERATE_LAPACK_ILP64 -DGGML_USE_BLAS
+#cgo darwin,arm64 LDFLAGS: -framework Foundation -framework Metal -framework MetalKit -framework Accelerate
 #cgo linux CFLAGS: -D_GNU_SOURCE
 #cgo linux CXXFLAGS: -D_GNU_SOURCE
-#cgo linux,arm64 LDFLAGS: -L${SRCDIR}/build/Linux/arm64
 #cgo linux,amd64 LDFLAGS: -L${SRCDIR}/build/Linux/amd64
-#cgo windows CFLAGS: -Wno-discarded-qualifiers
-#cgo windows LDFLAGS: -lmsvcrt -static-libstdc++ -static-libgcc -static
-#cgo windows,arm64 LDFLAGS: -L${SRCDIR}/build/Windows/arm64
-#cgo windows,amd64 LDFLAGS: -L${SRCDIR}/build/Windows/amd64
-#cgo avx CFLAGS: -mavx
-#cgo avx CXXFLAGS: -mavx
-#cgo avx2 CFLAGS: -mavx2 -mfma -mf16c
-#cgo avx2 CXXFLAGS: -mavx2 -mfma -mf16c
-#cgo cuda CFLAGS: -fPIE -DGGML_USE_CUDA -DGGML_CUDA_DMMV_X=32 -DGGML_CUDA_PEER_MAX_BATCH_SIZE=128 -DGGML_CUDA_MMV_Y=1
-#cgo cuda CXXFLAGS: -fPIE -DGGML_USE_CUDA -DGGML_CUDA_DMMV_X=32 -DGGML_CUDA_PEER_MAX_BATCH_SIZE=128 -DGGML_CUDA_MMV_Y=1
-#cgo rocm CFLAGS: -DGGML_USE_CUDA -DGGML_USE_HIPBLAS -DGGML_CUDA_DMMV_X=32 -DGGML_CUDA_PEER_MAX_BATCH_SIZE=128 -DGGML_CUDA_MMV_Y=1 -D__HIP_PLATFORM_AMD__=1 -D__HIP_ROCclr__=1
-#cgo rocm CXXFLAGS: -DGGML_USE_CUDA -DGGML_USE_HIPBLAS -DGGML_CUDA_DMMV_X=32 -DGGML_CUDA_PEER_MAX_BATCH_SIZE=128 -DGGML_CUDA_MMV_Y=1 -D__HIP_PLATFORM_AMD__=1 -D__HIP_ROCclr__=1
-#cgo rocm LDFLAGS: -L${SRCDIR} -lggml_rocm -lhipblas -lamdhip64 -lrocblas
-#cgo cuda_v11 LDFLAGS: -lggml_cuda_v11 -L/usr/local/cuda-11/lib64
-#cgo cuda_v12 LDFLAGS: -lggml_cuda_v12 -L/usr/local/cuda-12/lib64
-#cgo windows,cuda LDFLAGS: -lcuda -lcudart -lcublas -lcublasLt
-#cgo windows,rocm LDFLAGS: -lggml_rocm -lhipblas -lamdhip64 -lrocblas
+#cgo linux,amd64 LDFLAGS: -L${SRCDIR}/build/Linux/amd64
+#cgo linux,arm64 CFLAGS: -D__aarch64__ -D__ARM_NEON -D__ARM_FEATURE_FMA -D__ARM_FEATURE_MATMUL_INT8
+#cgo linux,arm64 CXXFLAGS: -D__aarch64__ -D__ARM_NEON -D__ARM_FEATURE_FMA -D__ARM_FEATURE_MATMUL_INT8
+#cgo linux,arm64 LDFLAGS: -L${SRCDIR}/build/Linux/arm64
+#cgo linux,arm64,sve CFLAGS: -march=armv8.6-a+sve
+#cgo linux,arm64,sve CXXFLAGS: -march=armv8.6-a+sve
 #cgo linux,cuda LDFLAGS: -lcuda -lcudart -lcublas -lcublasLt -lpthread -ldl -lrt -lresolv
 #cgo linux,rocm LDFLAGS: -L/opt/rocm/lib -lpthread -ldl -lrt -lresolv
+#cgo rocm CFLAGS: -DGGML_USE_CUDA -DGGML_USE_HIPBLAS -DGGML_CUDA_DMMV_X=32 -DGGML_CUDA_PEER_MAX_BATCH_SIZE=128 -DGGML_CUDA_MMV_Y=1 -DGGML_BUILD=1
+#cgo rocm CXXFLAGS: -DGGML_USE_CUDA -DGGML_USE_HIPBLAS -DGGML_CUDA_DMMV_X=32 -DGGML_CUDA_PEER_MAX_BATCH_SIZE=128 -DGGML_CUDA_MMV_Y=1 -DGGML_BUILD=1
+#cgo rocm LDFLAGS: -L${SRCDIR} -lggml_rocm -lhipblas -lamdhip64 -lrocblas
+#cgo windows CFLAGS: -Wno-discarded-qualifiers
+#cgo windows CFLAGS: -Wno-discarded-qualifiers
+#cgo windows LDFLAGS: -lmsvcrt
+#cgo windows LDFLAGS: -lmsvcrt -static-libstdc++ -static-libgcc -static
+#cgo windows,amd64 LDFLAGS: -L${SRCDIR}/build/Windows/amd64
+#cgo windows,amd64 LDFLAGS: -L${SRCDIR}/build/Windows/amd64
+#cgo windows,arm64 CFLAGS: -D__aarch64__ -D__ARM_NEON -D__ARM_FEATURE_FMA
+#cgo windows,arm64 CXXFLAGS: -D__aarch64__ -D__ARM_NEON -D__ARM_FEATURE_FMA
+#cgo windows,arm64 LDFLAGS: -L${SRCDIR}/build/Windows/arm64
+#cgo windows,arm64 LDFLAGS: -L${SRCDIR}/build/Windows/arm64
+#cgo windows,cuda LDFLAGS: -lcuda -lcudart -lcublas -lcublasLt
+#cgo windows,rocm LDFLAGS: -lggml_rocm -lhipblas -lamdhip64 -lrocblas
 
 #include <stdlib.h>
 #include "llama.h"
diff --git a/llama/make/Makefile.default b/llama/make/Makefile.default
index d07c2468..03a316b1 100644
--- a/llama/make/Makefile.default
+++ b/llama/make/Makefile.default
@@ -8,8 +8,10 @@ CPU_GOFLAGS="-ldflags=-w -s \"-X=github.com/ollama/ollama/version.Version=$(VERS
 DEFAULT_RUNNER := $(if $(and $(filter darwin,$(OS)),$(filter arm64,$(ARCH))),metal,cpu)
 RUNNERS := $(DEFAULT_RUNNER)
 ifeq ($(ARCH),amd64)
+ifeq ($(CUSTOM_CPU_FLAGS),)
 	RUNNERS += cpu_avx cpu_avx2
 endif
+endif
 
 DIST_RUNNERS = $(addprefix $(RUNNERS_DIST_DIR)/,$(addsuffix /ollama_llama_server$(EXE_EXT),$(RUNNERS)))
 ifneq ($(OS),windows)
@@ -19,20 +21,20 @@ BUILD_RUNNERS = $(addprefix $(RUNNERS_BUILD_DIR)/,$(addsuffix /ollama_llama_serv
 
 all: $(BUILD_RUNNERS) $(DIST_RUNNERS) $(PAYLOAD_RUNNERS)
 
-$(RUNNERS_BUILD_DIR)/$(DEFAULT_RUNNER)/ollama_llama_server$(EXE_EXT): TARGET_CPU_FLAGS=
+$(RUNNERS_BUILD_DIR)/$(DEFAULT_RUNNER)/ollama_llama_server$(EXE_EXT): TARGET_CPU_FLAGS=$(CUSTOM_CPU_FLAGS)
 $(RUNNERS_BUILD_DIR)/$(DEFAULT_RUNNER)/ollama_llama_server$(EXE_EXT): *.go ./runner/*.go $(COMMON_SRCS) $(COMMON_HDRS)
 	@-mkdir -p $(dir $@)
-	GOARCH=$(ARCH) go build $(CPU_GOFLAGS) -o $@ ./runner
+	GOARCH=$(ARCH) go build -buildmode=pie $(CPU_GOFLAGS) $(if $(CUSTOM_CPU_FLAGS),-tags $(subst $(space),$(comma),$(CUSTOM_CPU_FLAGS))) -o $@ ./runner
 
 $(RUNNERS_BUILD_DIR)/cpu_avx/ollama_llama_server$(EXE_EXT): TARGET_CPU_FLAGS="avx"
 $(RUNNERS_BUILD_DIR)/cpu_avx/ollama_llama_server$(EXE_EXT): *.go ./runner/*.go $(COMMON_SRCS) $(COMMON_HDRS)
 	@-mkdir -p $(dir $@)
-	GOARCH=$(ARCH) go build $(CPU_GOFLAGS) -tags $(subst $(space),$(comma),$(TARGET_CPU_FLAGS)) -o $@ ./runner
+	GOARCH=$(ARCH) go build -buildmode=pie $(CPU_GOFLAGS) -tags $(subst $(space),$(comma),$(TARGET_CPU_FLAGS)) -o $@ ./runner
 
 $(RUNNERS_BUILD_DIR)/cpu_avx2/ollama_llama_server$(EXE_EXT): TARGET_CPU_FLAGS="avx avx2"
 $(RUNNERS_BUILD_DIR)/cpu_avx2/ollama_llama_server$(EXE_EXT): *.go ./runner/*.go $(COMMON_SRCS) $(COMMON_HDRS)
 	@-mkdir -p $(dir $@)
-	GOARCH=$(ARCH) go build $(CPU_GOFLAGS) -tags $(subst $(space),$(comma),$(TARGET_CPU_FLAGS)) -o $@ ./runner
+	GOARCH=$(ARCH) go build -buildmode=pie $(CPU_GOFLAGS) -tags $(subst $(space),$(comma),$(TARGET_CPU_FLAGS)) -o $@ ./runner
 
 $(RUNNERS_DIST_DIR)/%: $(RUNNERS_BUILD_DIR)/%
 	@-mkdir -p $(dir $@)
diff --git a/llama/make/common-defs.make b/llama/make/common-defs.make
index 98d51090..0f34254b 100644
--- a/llama/make/common-defs.make
+++ b/llama/make/common-defs.make
@@ -46,8 +46,6 @@ endif
 
 # Override in environment space separated to tune GPU runner CPU vector flags
 ifeq ($(ARCH),amd64)
-# TODO may need a bit more work - setting 'GPU_RUNNER_CPU_FLAGS="avx avx2 avx512f avx512bw"' doesn't yield
-# a system_info showing 'AVX512 = 1' so there may be additional macros that are needed in GGML
 	GPU_RUNNER_CPU_FLAGS ?= avx
 endif
 
diff --git a/llama/make/gpu.make b/llama/make/gpu.make
index db941739..7143bed6 100644
--- a/llama/make/gpu.make
+++ b/llama/make/gpu.make
@@ -89,7 +89,7 @@ $(BUILD_DIR)/%.$(GPU_RUNNER_NAME).$(OBJ_EXT): %.cpp
 $(RUNNERS_BUILD_DIR)/$(GPU_RUNNER_NAME)/ollama_llama_server$(EXE_EXT): TARGET_CGO_LDFLAGS = -L"$(RUNNERS_BUILD_DIR)/$(GPU_RUNNER_NAME)/" $(CGO_EXTRA_LDFLAGS)
 $(RUNNERS_BUILD_DIR)/$(GPU_RUNNER_NAME)/ollama_llama_server$(EXE_EXT): $(RUNNERS_BUILD_DIR)/$(GPU_RUNNER_NAME)/$(SHARED_PREFIX)ggml_$(GPU_RUNNER_NAME).$(SHARED_EXT) *.go ./runner/*.go $(COMMON_SRCS) $(COMMON_HDRS)
 	@-mkdir -p $(dir $@)
-	GOARCH=$(ARCH) CGO_LDFLAGS="$(TARGET_CGO_LDFLAGS)" go build $(GPU_GOFLAGS) -tags $(subst $(space),$(comma),$(GPU_RUNNER_CPU_FLAGS) $(GPU_RUNNER_GO_TAGS)) -o $@ ./runner
+	GOARCH=$(ARCH) CGO_LDFLAGS="$(TARGET_CGO_LDFLAGS)" go build -buildmode=pie  $(GPU_GOFLAGS) -tags $(subst $(space),$(comma),$(GPU_RUNNER_CPU_FLAGS) $(GPU_RUNNER_GO_TAGS)) -o $@ ./runner
 $(RUNNERS_BUILD_DIR)/$(GPU_RUNNER_NAME)/$(SHARED_PREFIX)ggml_$(GPU_RUNNER_NAME).$(SHARED_EXT): $(GPU_RUNNER_OBJS) $(DIST_GPU_RUNNER_LIB_DEPS) $(COMMON_HDRS) $(GPU_RUNNER_HDRS)
 	@-mkdir -p $(dir $@)
 	$(CCACHE) $(GPU_COMPILER) --shared $(GPU_RUNNER_DRIVER_LIB_LINK) -L${DIST_GPU_RUNNER_DEPS_DIR} $(foreach lib, $(GPU_RUNNER_LIBS_SHORT), -l$(lib)) $(GPU_RUNNER_OBJS) -o $@
diff --git a/scripts/env.sh b/scripts/env.sh
index 537d3eee..0ccbac59 100644
--- a/scripts/env.sh
+++ b/scripts/env.sh
@@ -17,6 +17,8 @@ OLLAMA_COMMON_BUILD_ARGS="--build-arg=VERSION \
     --build-arg=CUDA_V12_ARCHITECTURES \
     --build-arg=OLLAMA_SKIP_ROCM_GENERATE \
     --build-arg=OLLAMA_FAST_BUILD \
+    --build-arg=CUSTOM_CPU_FLAGS \
+    --build-arg=GPU_RUNNER_CPU_FLAGS \
     --build-arg=AMDGPU_TARGETS"
 OLLAMA_NEW_RUNNERS=${OLLAMA_NEW_RUNNERS:-""}
 if [ -n "${OLLAMA_NEW_RUNNERS}" ]; then