I'm trying to build and include a static library in my Android Studio project. My project builds and runs fine without the static library.
My top-level Android.mk includes 2 explicit SQLite.mk and Hello.mk lines.
I have specified full paths in all of these .mk files just for my own sanity.
SQLite.mk is as follows:
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
JNILIB_PATH := C:/androidprojects/SDLTest_SQLite/app/jniLibs
SRC_SQLITE := C:/androidprojects/SDLTest_SQLite/app/jni/SQLite/sqlite3.c
LOCAL_CFLAGS += -Wno-write-strings
LOCAL_MODULE := SQLite
LOCAL_SRC_FILES := $(SRC_SQLITE)
TARGET_OUT=$(JNILIB_PATH)/$(TARGET_ARCH_ABI)
#TARGET_OUT=../jniLibs/$(TARGET_ARCH_ABI)
include $(BUILD_STATIC_LIBRARY)
Android Studio/Gradle error is as follows:
Android NDK: ERROR:C:\androidprojects\SDLTest_SQLite\app\jni\Android.mk:SQLite: LOCAL_SRC_FILES points to a missing file
Android NDK: Check that C:/androidprojects/SDLTest_SQLite/app/jniLibs/armeabi/libSQLite.a exists or that its path is correct
Build command failed.
My fundamental problem is that I cannot get a libSQLite.a file to be generated anywhere. Is my TARGET_OUT line the problem?
Can somebody please help me generate my static library file?
You should not set TARGET_OUT in Android.mk: this is a sure way to break the subtle ndk-build logic. Your two mk files contradict one another: SQLite cannot be both prebuilt and built from sources.
I don't know why your error message says that the SQLite source is missing, but you use full paths which is unhealthy.
Here are the three mk files that do their job:
Android.mk
ROOT_PATH := $(call my-dir)
include $(ROOT_PATH)/src/Hello.mk
include $(ROOT_PATH)/SQLite/SQLite.mk
SQLite.mk
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
SRC_SQLITE := sqlite3.c
LOCAL_CFLAGS += -Wno-write-strings
LOCAL_MODULE := SQLite
LOCAL_SRC_FILES := $(SRC_SQLITE)
include $(BUILD_STATIC_LIBRARY)
Hello.mk
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := libSDL2
LOCAL_SRC_FILES := ../../jniLibs/SDL2-prebuilt/$(TARGET_ARCH_ABI)/libSDL2.so
include $(PREBUILT_SHARED_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := main
SDL_PATH := $(LOCAL_PATH)/../../jniLibs/SDL2-prebuilt
LOCAL_C_INCLUDES := $(SDL_PATH)/include
# Add your application source files here...
LOCAL_SRC_FILES := 52_hello_mobile.cpp
LOCAL_STATIC_LIBRARIES := libSDL2 SQLite
LOCAL_LDLIBS := -lGLESv1_CM -lGLESv2 -llog
include $(BUILD_SHARED_LIBRARY)
The latter can be slightly improved even more:
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := libSDL2
LOCAL_SRC_FILES := ../../jniLibs/SDL2-prebuilt/$(TARGET_ARCH_ABI)/libSDL2.so
SDL_PATH := $(LOCAL_PATH)/../../jniLibs/SDL2-prebuilt
LOCAL_EXPORT_C_INCLUDES := $(SDL_PATH)/include
include $(PREBUILT_SHARED_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := main
# Add your application source files here...
LOCAL_SRC_FILES := 52_hello_mobile.cpp
LOCAL_STATIC_LIBRARIES := libSDL2 SQLite
LOCAL_LDLIBS := -lGLESv1_CM -lGLESv2 -llog
include $(BUILD_SHARED_LIBRARY)
One more fox to your setup: you cannot build 64-bit versions with APP_PLATFORM=14. You should use compileSdkVersion at least 21, and don't set APP_PLATFORM explicitly. Then, gradle will automatically set APP_PLATFORM according to minSdkVersion for 32-bit targets (i.e. android-14), and push it to android-21 for 64-bit targets.
In Aplication.mk, APP_PLATFORM setting is silently ignored.