问题
I have source code alsa-utils-1.0.27.2 from http://www.alsa-project.org/main/index.php/Main_Page I need for build it to my android:
user@vbUbuntu1204:~/Android-alsa/alsa-utils$ cat jni/Android.mk
ifeq ($(strip $(BOARD_USES_ALSA_AUDIO)),true)
ifeq ($(strip $(BUILD_WITH_ALSA_UTILS)),true)
LOCAL_PATH:= $(call my-dir)
#
# Build aplay command
#
include $(CLEAR_VARS)
LOCAL_CFLAGS := \
-fPIC -D_POSIX_SOURCE \
-DALSA_CONFIG_DIR=\"/system/usr/share/alsa\" \
-DALSA_PLUGIN_DIR=\"/system/usr/lib/alsa-lib\" \
-DALSA_DEVICE_DIRECTORY=\"/dev/snd/\"
LOCAL_C_INCLUDES:= \
$(LOCAL_PATH)/include \
$(LOCAL_PATH)/android \
external/alsa-lib/include
LOCAL_SRC_FILES := \
aplay/aplay.c
LOCAL_MODULE_TAGS := debug
LOCAL_MODULE := alsa_aplay
LOCAL_SHARED_LIBRARIES := \
libaudio \
libc
include $(BUILD_EXECUTABLE)
#
# Build alsactl command
#
include $(CLEAR_VARS)
LOCAL_CFLAGS := \
-fPIC -D_POSIX_SOURCE \
-DALSA_CONFIG_DIR=\"/system/usr/share/alsa\" \
-DALSA_PLUGIN_DIR=\"/system/usr/lib/alsa-lib\" \
-DALSA_DEVICE_DIRECTORY=\"/dev/snd/\"
LOCAL_C_INCLUDES:= \
$(LOCAL_PATH)/include \
$(LOCAL_PATH)/android \
external/alsa-lib/include
LOCAL_SRC_FILES := \
alsactl/alsactl.c \
alsactl/init_parse.c \
alsactl/state.c \
alsactl/utils.c
LOCAL_MODULE_TAGS := debug
LOCAL_MODULE := alsa_ctl
LOCAL_SHARED_LIBRARIES := \
libaudio \
libc
include $(BUILD_EXECUTABLE)
#
# Build amixer command
#
include $(CLEAR_VARS)
LOCAL_CFLAGS := \
-fPIC -D_POSIX_SOURCE \
-DALSA_CONFIG_DIR=\"/system/usr/share/alsa\" \
-DALSA_PLUGIN_DIR=\"/system/usr/lib/alsa-lib\" \
-DALSA_DEVICE_DIRECTORY=\"/dev/snd/\"
LOCAL_C_INCLUDES:= \
$(LOCAL_PATH)/include \
$(LOCAL_PATH)/android \
external/alsa-lib/include
LOCAL_SRC_FILES := \
amixer/amixer.c
LOCAL_MODULE_TAGS := debug
LOCAL_MODULE := alsa_amixer
LOCAL_SHARED_LIBRARIES := \
libaudio \
libc
include $(BUILD_EXECUTABLE)
include $(CLEAR_VARS)
ALSAINIT_DIR := $(TARGET_OUT)/usr/share/alsa/init
files := $(addprefix $(ALSAINIT_DIR)/,00main default hda help info test)
$(files): PRIVATE_MODULE := alsactl_initdir
$(files): $(ALSAINIT_DIR)/%: $(LOCAL_PATH)/alsactl/init/% | $(ACP)
$(transform-prebuilt-to-target)
ALL_PREBUILT += $(files)
endif
endif
user@vbUbuntu1204:~/Android-alsa/alsa-utils$ cat jni/Application.mk
APP_PROJECT_PATH := /home/user/Android-alsa/alsa-utils/
NDK_PROJECT_PATH := ~/android-ndk-r9d/
user@vbUbuntu1204:~/Android-alsa/alsa-utils$ ../../android-ndk-r9d/ndk-build
/home/user/android-ndk-r9d/build/core/build-all.mk:89: Android NDK: WARNING: There are no modules to build in this project!
How to correct thish?
来源：https://stackoverflow.com/questions/22524943/alsa-utils-ndk-build-not-working