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perf(build): add ARM Cortex-A7 optimization flags for audio builds 

Add compiler optimization flags targeting ARM Cortex-A7 with NEON support
to improve performance of audio library builds and Go binaries. The flags
enable vectorization, fast math, and loop unrolling for better execution
speed on the target hardware.
This commit is contained in:
Alex P 2025-08-12 11:20:19 +00:00
parent a9a92c52ab
commit 4688f9e6ca
2 changed files with 13 additions and 5 deletions
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9
Makefile
View File

@ -26,6 +26,9 @@ VERSION ?= 0.4.6
ALSA_VERSION ?= 1.2.14 ALSA_VERSION ?= 1.2.14
OPUS_VERSION ?= 1.5.2 OPUS_VERSION ?= 1.5.2
# Optimization flags for ARM Cortex-A7 with NEON
OPTIM_CFLAGS := -O3 -mcpu=cortex-a7 -mfpu=neon -mfloat-abi=hard -ftree-vectorize -ffast-math -funroll-loops
PROMETHEUS_TAG := github.com/prometheus/common/version PROMETHEUS_TAG := github.com/prometheus/common/version
KVM_PKG_NAME := github.com/jetkvm/kvm KVM_PKG_NAME := github.com/jetkvm/kvm
@ -51,7 +54,7 @@ build_dev: build_audio_deps hash_resource
GOOS=linux GOARCH=arm GOARM=7 \ GOOS=linux GOARCH=arm GOARM=7 \
CC=$(TOOLCHAIN_DIR)/tools/linux/toolchain/arm-rockchip830-linux-uclibcgnueabihf/bin/arm-rockchip830-linux-uclibcgnueabihf-gcc \ CC=$(TOOLCHAIN_DIR)/tools/linux/toolchain/arm-rockchip830-linux-uclibcgnueabihf/bin/arm-rockchip830-linux-uclibcgnueabihf-gcc \
CGO_ENABLED=1 \ CGO_ENABLED=1 \
CGO_CFLAGS="-I$(AUDIO_LIBS_DIR)/alsa-lib-$(ALSA_VERSION)/include -I$(AUDIO_LIBS_DIR)/opus-$(OPUS_VERSION)/include -I$(AUDIO_LIBS_DIR)/opus-$(OPUS_VERSION)/celt" \ CGO_CFLAGS="$(OPTIM_CFLAGS) -I$(AUDIO_LIBS_DIR)/alsa-lib-$(ALSA_VERSION)/include -I$(AUDIO_LIBS_DIR)/opus-$(OPUS_VERSION)/include -I$(AUDIO_LIBS_DIR)/opus-$(OPUS_VERSION)/celt" \
CGO_LDFLAGS="-L$(AUDIO_LIBS_DIR)/alsa-lib-$(ALSA_VERSION)/src/.libs -lasound -L$(AUDIO_LIBS_DIR)/opus-$(OPUS_VERSION)/.libs -lopus -lm -ldl -static" \ CGO_LDFLAGS="-L$(AUDIO_LIBS_DIR)/alsa-lib-$(ALSA_VERSION)/src/.libs -lasound -L$(AUDIO_LIBS_DIR)/opus-$(OPUS_VERSION)/.libs -lopus -lm -ldl -static" \
go build \ go build \
-ldflags="$(GO_LDFLAGS) -X $(KVM_PKG_NAME).builtAppVersion=$(VERSION_DEV)" \ -ldflags="$(GO_LDFLAGS) -X $(KVM_PKG_NAME).builtAppVersion=$(VERSION_DEV)" \
@ -79,7 +82,7 @@ build_dev_test: build_audio_deps build_test2json build_gotestsum
GOOS=linux GOARCH=arm GOARM=7 \ GOOS=linux GOARCH=arm GOARM=7 \
CC=$(TOOLCHAIN_DIR)/tools/linux/toolchain/arm-rockchip830-linux-uclibcgnueabihf/bin/arm-rockchip830-linux-uclibcgnueabihf-gcc \ CC=$(TOOLCHAIN_DIR)/tools/linux/toolchain/arm-rockchip830-linux-uclibcgnueabihf/bin/arm-rockchip830-linux-uclibcgnueabihf-gcc \
CGO_ENABLED=1 \ CGO_ENABLED=1 \
CGO_CFLAGS="-I$(AUDIO_LIBS_DIR)/alsa-lib-$(ALSA_VERSION)/include -I$(AUDIO_LIBS_DIR)/opus-$(OPUS_VERSION)/include -I$(AUDIO_LIBS_DIR)/opus-$(OPUS_VERSION)/celt" \ CGO_CFLAGS="$(OPTIM_CFLAGS) -I$(AUDIO_LIBS_DIR)/alsa-lib-$(ALSA_VERSION)/include -I$(AUDIO_LIBS_DIR)/opus-$(OPUS_VERSION)/include -I$(AUDIO_LIBS_DIR)/opus-$(OPUS_VERSION)/celt" \
CGO_LDFLAGS="-L$(AUDIO_LIBS_DIR)/alsa-lib-$(ALSA_VERSION)/src/.libs -lasound -L$(AUDIO_LIBS_DIR)/opus-$(OPUS_VERSION)/.libs -lopus -lm -ldl -static" \ CGO_LDFLAGS="-L$(AUDIO_LIBS_DIR)/alsa-lib-$(ALSA_VERSION)/src/.libs -lasound -L$(AUDIO_LIBS_DIR)/opus-$(OPUS_VERSION)/.libs -lopus -lm -ldl -static" \
go test -v \ go test -v \
-ldflags="$(GO_LDFLAGS) -X $(KVM_PKG_NAME).builtAppVersion=$(VERSION_DEV)" \ -ldflags="$(GO_LDFLAGS) -X $(KVM_PKG_NAME).builtAppVersion=$(VERSION_DEV)" \
@ -106,7 +109,7 @@ build_release: frontend build_audio_deps hash_resource
GOOS=linux GOARCH=arm GOARM=7 \ GOOS=linux GOARCH=arm GOARM=7 \
CC=$(TOOLCHAIN_DIR)/tools/linux/toolchain/arm-rockchip830-linux-uclibcgnueabihf/bin/arm-rockchip830-linux-uclibcgnueabihf-gcc \ CC=$(TOOLCHAIN_DIR)/tools/linux/toolchain/arm-rockchip830-linux-uclibcgnueabihf/bin/arm-rockchip830-linux-uclibcgnueabihf-gcc \
CGO_ENABLED=1 \ CGO_ENABLED=1 \
CGO_CFLAGS="-I$(AUDIO_LIBS_DIR)/alsa-lib-$(ALSA_VERSION)/include -I$(AUDIO_LIBS_DIR)/opus-$(OPUS_VERSION)/include -I$(AUDIO_LIBS_DIR)/opus-$(OPUS_VERSION)/celt" \ CGO_CFLAGS="$(OPTIM_CFLAGS) -I$(AUDIO_LIBS_DIR)/alsa-lib-$(ALSA_VERSION)/include -I$(AUDIO_LIBS_DIR)/opus-$(OPUS_VERSION)/include -I$(AUDIO_LIBS_DIR)/opus-$(OPUS_VERSION)/celt" \
CGO_LDFLAGS="-L$(AUDIO_LIBS_DIR)/alsa-lib-$(ALSA_VERSION)/src/.libs -lasound -L$(AUDIO_LIBS_DIR)/opus-$(OPUS_VERSION)/.libs -lopus -lm -ldl -static" \ CGO_LDFLAGS="-L$(AUDIO_LIBS_DIR)/alsa-lib-$(ALSA_VERSION)/src/.libs -lasound -L$(AUDIO_LIBS_DIR)/opus-$(OPUS_VERSION)/.libs -lopus -lm -ldl -static" \
go build \ go build \
-ldflags="$(GO_LDFLAGS) -X $(KVM_PKG_NAME).builtAppVersion=$(VERSION)" \ -ldflags="$(GO_LDFLAGS) -X $(KVM_PKG_NAME).builtAppVersion=$(VERSION)" \

9
tools/build_audio_deps.sh
View File

@ -23,12 +23,17 @@ cd "$AUDIO_LIBS_DIR"
[ -d alsa-lib-${ALSA_VERSION} ] || tar xf alsa-lib-${ALSA_VERSION}.tar.bz2 [ -d alsa-lib-${ALSA_VERSION} ] || tar xf alsa-lib-${ALSA_VERSION}.tar.bz2
[ -d opus-${OPUS_VERSION} ] || tar xf opus-${OPUS_VERSION}.tar.gz [ -d opus-${OPUS_VERSION} ] || tar xf opus-${OPUS_VERSION}.tar.gz
# Optimization flags for ARM Cortex-A7 with NEON
OPTIM_CFLAGS="-O3 -mcpu=cortex-a7 -mfpu=neon -mfloat-abi=hard -ftree-vectorize -ffast-math -funroll-loops"
export CC="${CROSS_PREFIX}-gcc" export CC="${CROSS_PREFIX}-gcc"
export CFLAGS="$OPTIM_CFLAGS"
export CXXFLAGS="$OPTIM_CFLAGS"
# Build ALSA # Build ALSA
cd alsa-lib-${ALSA_VERSION} cd alsa-lib-${ALSA_VERSION}
if [ ! -f .built ]; then if [ ! -f .built ]; then
./configure --host arm-rockchip830-linux-uclibcgnueabihf --enable-static=yes --enable-shared=no --with-pcm-plugins=rate,linear --disable-seq --disable-rawmidi --disable-ucm CFLAGS="$OPTIM_CFLAGS" ./configure --host arm-rockchip830-linux-uclibcgnueabihf --enable-static=yes --enable-shared=no --with-pcm-plugins=rate,linear --disable-seq --disable-rawmidi --disable-ucm
make -j$(nproc) make -j$(nproc)
touch .built touch .built
fi fi
@ -37,7 +42,7 @@ cd ..
# Build Opus # Build Opus
cd opus-${OPUS_VERSION} cd opus-${OPUS_VERSION}
if [ ! -f .built ]; then if [ ! -f .built ]; then
./configure --host arm-rockchip830-linux-uclibcgnueabihf --enable-static=yes --enable-shared=no --enable-fixed-point CFLAGS="$OPTIM_CFLAGS" ./configure --host arm-rockchip830-linux-uclibcgnueabihf --enable-static=yes --enable-shared=no --enable-fixed-point
make -j$(nproc) make -j$(nproc)
touch .built touch .built
fi fi