如何安装openssl.so和libssl.so在Android项目？ [英] How to install openssl.so and libssl.so in an android project?

问题描述

我目前面临的一个问题，构建与OpenSSL的。

I'm currently facing a build issue with openssl.

我先建 libssl.so 和 libcrypto.so 共享librairies与NDK-建立guardianproject。

I first built libssl.so and libcrypto.so shared librairies with ndk-build the guardianproject.

第二步，我做这个topic:

1）创建一个文件夹JNI

1)Create a jni folder

2）在这个新的文件夹我创建了一个包含文件夹，包含头文件复制粘贴OpenSSL的文件夹（从OpenSSL包）

2) In this new folder I created an includes folder and copy pasted the openssl folder (from the openssl package) containing the header files

3）创建，我复制了一个libssl.so precompiled文件夹和文件libcrypto.so

3)Create a precompiled folder where I copied the libssl.so and libcrypto.so files

4）创建一个Android.mk文件：

4)Create an Android.mk file:

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

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

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

export_c_includes := $(c_includes)

LOCAL_MODULE := security
LOCAL_SRC_FILES := security.c
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

include $(BUILD_SHARED_LIBRARY)

5）我然后写所谓security.c和包含函数初始化OpenSSL的源文件

5) I then wrote a source file called security.c and containing a function initializing openssl

/* OpenSSL headers */

#include "openssl/bio.h"
#include "openssl/ssl.h"
#include "openssl/err.h"

/* Initializing OpenSSL */

void init_openssl(void){
    SSL_load_error_strings();
    ERR_load_BIO_strings();
    OpenSSL_add_all_algorithms();
}

5）建立与NDK的构建整个事情得到一个libsecurity.so文件

5) Build the whole thing with ndk-build to get a libsecurity.so file

但在这一步，似乎编译器未找到的头文件和我得到这个错误：

But at this step, it seems that the compiler doesn't find the header files and I get this error:

fatal error: openssl/bio.h: No such file or directory

我错过了MK文件的东西吗？

Did I miss something in the mk file?

推荐答案

您需要做的就是使用 preBUILT_SHARED_LIBRARY 指令。

What you need to do is use the PREBUILT_SHARED_LIBRARY directive.

在你的Andr​​oid.mk，添加以下内容：

In your Android.mk, add the following sections:

# Prebuilt libssl
include $(CLEAR_VARS)
LOCAL_MODULE := ssl
LOCAL_SRC_FILES := precompiled/libssl.so
include $(PREBUILT_SHARED_LIBRARY)

# Prebuilt libcrypto
include $(CLEAR_VARS)
LOCAL_MODULE := crypto
LOCAL_SRC_FILES := precompiled/libcrypto.so
include $(PREBUILT_SHARED_LIBRARY)

由于部分 LOCAL_MODULE：=安全部分，添加以下内容：

LOCAL_MODULE := security
...
LOCAL_SHARED_LIBRARIES= ssl crypto

本 LOCAL_SHARED_LIBRARIES 线将替换以下行：

LOCAL_LDLIBS += $(LOCAL_PATH)/precompiled/libssl.so
LOCAL_LDLIBS += $(LOCAL_PATH)/precompiled/libcrypto.so

请看看问题<一href=\"http://stackoverflow.com/questions/10212869/calling-inner-android-mk-file-to-build-$p$pbuilt-libraries-not-working\">Calling内Android.mk文件构建prebuilt库工作不了解更多详情。

Please take a look at the question Calling inner Android.mk file to build prebuilt libraries not working for more details.

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