android 调用openssl库
一、openssl安装编译
- 下载openssl-1.1.1w.tar.gz和android-ndk-r21e-linux-x86_64.zip
- 解压android-ndk-r21e-linux-x86_64.zip到/opt/pj_ssl目录下，然后配置环境
vim ~/.bashrc- 增加如下内容
export NDK_HOME=/opt/pj_ssl/android-ndk-r21e
export ANDROID_NDK_HOME=/opt/pj_ssl/android-ndk-r21e
export PATH=$ANDROID_NDK_HOME/toolchains/llvm/prebuilt/linux-x86_64/bin:$ANDROID_NDK_HOME/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin:$PATH
- 刷新环境变量
source ~/.bashrc
- 编译环境
- 编译32位
./Configure android-arm -D__ANDROID_API__=21 --prefix=/opt/pj_ssl/openssl-1.1.1w/obj - 编译64位
./Configure android-arm64 -D__ANDROID_API__=21 --prefix=/opt/pj_ssl/openssl-1.1.1w/obj makemake install
- 将32位的libssl.a和libcrypto.a拷贝到armeabi-v7a
- 将64位的libssl.a和libcrypto.a拷贝到arm64-v8a
二、使用openssl库
1.在 Android.mk引用库
OPENSSL_PATH := $(ROOT_PATH)/opensslifeq ($(TARGET_ARCH_ABI),armeabi-v7a)
LOCAL_CFLAGS += -DPJ_M_ARMV7
OPENSSL_INC := $(OPENSSL_PATH)/armeabi-v7a/include
OPENSSL_SSL := $(OPENSSL_PATH)/armeabi-v7a/lib/libssl.a
OPENSSL_CRYPTO := $(OPENSSL_PATH)/armeabi-v7a/lib/libcrypto.aelse ifeq ($(TARGET_ARCH_ABI),arm64-v8a)
LOCAL_CFLAGS += -DPJ_M_ARMV8 -D_ARM_
OPENSSL_INC := $(OPENSSL_PATH)/arm64-v8a/include
OPENSSL_SSL := $(OPENSSL_PATH)/arm64-v8a/lib/libssl.a
OPENSSL_CRYPTO := $(OPENSSL_PATH)/arm64-v8a/lib/libcrypto.aLOCAL_LDFLAGS += \$(OPENSSL_SSL) \$(OPENSSL_CRYPTO)
- 编译库
/opt/pj_ssl/android-ndk-r21e/ndk-build $@ - 最后生成新的libtestssl.so供android调用
三、其他问题
- 编译openssl时，必须加入 -D__ANDROID_API__=21。否则会出现缺少stderr等异常问题
- PATH必须包含两个路径