Question

我正在尝试在Android Studio项目中构建并包含静态库。我的项目在没有静态库的情况下构建并运行良好。

我的顶级 Android.mk 包含2个显式 SQLite.mk 和 Hello.mk 行。

我已经在所有这些.mk文件中指定了完整路径，这只是为了我自己的理智。

SQLite.mk如下：

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错误如下：

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.

我的基本问题是我无法在任何地方生成 libSQLite.a 文件。我的TARGET_OUT行是问题吗？

有人可以帮我生成我的静态库文件吗？

Here is a link to my project

Answer 1

您不应在 Android.mk 中设置ROOT_PATH := $(call my-dir) include $(ROOT_PATH)/src/Hello.mk include $(ROOT_PATH)/SQLite/SQLite.mk：这是打破微妙的 ndk-build 逻辑的可靠方法。您的两个 mk 文件相互矛盾：SQLite既不能预先构建，也不能从源代码构建。

我不知道为什么您的错误消息显示缺少SQLite源，但您使用的是不健康的完整路径。

以下是执行其工作的三个 mk 文件：

<强> Android.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)

<强> SQLite.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)

<强> Hello.mk

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)

后者可以稍微改善一下：

APP_PLATFORM=14

您的设置还有一个狐狸：您无法使用APP_PLATFORM构建64位版本。您应该使用 compileSdkVersion 至少 21 ，并且不要明确设置APP_PLATFORM。然后，gradle将根据 minSdkVersion 为32位目标（即android-14）自动设置android-21，并将其推送到APP_PLATFORM以获取64位目标。

在 Aplication.mk 中，swal({ title: "HTML <small>Welcome to SWAL</small>!", text: "A html format <span style='color:#F8BB86'>{{$scope.productArray}}<span> message.", html: true });设置会被默默忽略。

Android Studio 3.0.1无法构建NDK静态库

1 个答案: