OpenSSL的为Android原生code共享库 [英] openssl as shared library in Android Native Code

问题描述

我刚刚编译OpenSSL的为Android。我有libcrypto.so和libssl.so共享库。我创建了一个名为TrialApp样本Android应用程序。这个想法是使用将调用的libssl和libcrypto共享库，一些本地的功能。因此，我的JNI目录下，我有一个TrialApp.cpp其中包括一个简单的SHA1 example.Here是我的NDK应用程序目录的基于Eclipse的树形结构：

I have just compiled the OpenSSL for Android. I have the libcrypto.so and libssl.so shared libraries. I created a sample Android Application called TrialApp. The idea is to use some native functions that would call the libssl and libcrypto shared libraries. Therefore, under my jni directory,I have a TrialApp.cpp which includes a simple SHA1 example.Here is the tree structure of my NDK Application directory on Eclipse:

TrialApp
|
|-->Activity.java
|
|-->TrialApp.java(which includes System.LoadLibrary calls)
|
|-->jni
    |-->TrialApp.cpp
    |
    |-->Android.mk
    |
    |-->includes
    |   |
    |   |-->openssl (dir containing *.h files)
    |
    |-->precompiled
       |-->libssl.so
       |-->libcrypto.so

下面是Android.mk文件

Here is the Android.mk file

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE    := TrialApp
LOCAL_SRC_FILES := TrialApp.cpp
LOCAL_EXPORT_C_INCLUDE_DIRS  := $(LOCAL_PATH)/includes/openssl
LOCAL_LDLIBS := -llog
LOCAL_LDLIBS += $(LOCAL_PATH)/precompiled/libssl.so
LOCAL_LDLIBS += $(LOCAL_PATH)/precompiled/libcrypto.so
LOCAL_STATIC_LIBRARIES := sslx cryptox

include $(BUILD_SHARED_LIBRARY)

但随后在TrialApp OpenSSL的标头，的.cpp不能由编译器发现。

But then the openssl headers in TrialApp,.cpp cannot be found by the compiler.

错误我得到：
致命错误：OpenSSL的/ evp.h：没有这样的文件或目录

The error I get: fatal error: openssl/evp.h: No such file or directory

谁能告诉我如何解决呢？
谢谢你。

Can someone tell me how to resolve it? Thanks.

推荐答案

include目录都设置在编译器标志-I：用适当的密钥，因此，建立 LOCAL_CFLAGS 变量和头的位置是这样的： LOCAL_CFLAGS + = $（cf_includes），其中 cf_includes 的定义如下 cf_includes：=包含/ OpenSSL的 + cf_includes：= $（添加preFIX -Ijni / $（cf_includes））结果
换句话说，你要玷污这样LOCAL_CFLAGS：结果 LOCAL_CFLAGS + = -Ijni /包括/ OpenSSL的

Include dirs are set up in compiler flag -I: so, set up LOCAL_CFLAGS variable with appropriate key and header location like this: LOCAL_CFLAGS += $(cf_includes) where cf_includes is defined like cf_includes:= includes/openssl + cf_includes := $(addprefix -Ijni/,$(cf_includes))
In other words you have to defile LOCAL_CFLAGS like this:
LOCAL_CFLAGS += -Ijni/includes/openssl

试着用替换您android.mk

Try to replace your android.mk with

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

c_includes := $(LOCAL_PATH) 
cf_includes:= includes/openssl

cf_includes := $(addprefix -Ijni/,$(cf_includes))

export_c_includes := $(c_includes)

LOCAL_MODULE    := TrialApp
LOCAL_SRC_FILES := TrialApp.cpp
LOCAL_CFLAGS    += $(cf_includes)
LOCAL_EXPORT_C_INCLUDES := $(export_c_includes)
LOCAL_LDLIBS := -llog
LOCAL_LDLIBS += $(LOCAL_PATH)/precompiled/libssl.so
LOCAL_LDLIBS += $(LOCAL_PATH)/precompiled/libcrypto.so
LOCAL_STATIC_LIBRARIES := sslx cryptox

include $(BUILD_SHARED_LIBRARY)

结果希望它能帮助

Hope it helps

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