openssl build MSYS2

vs使用openssl aes gcm

C++ Openssl AES GCM 128bits代码示例，可wins10的visual studio 2017 中直接运行_ChainingBlocks-CSDN博客

https://github.com/openssl/openssl/issues/10459

github 是否解决win下编译问题提问

linux交叉编译win

第一步：安装mingw32

本人 linux 环境是ubuntu18.04

sudo apt-get install mingw-w64
sudo apt-get install mingw-w64-tools
sudo apt-get install mingw-w64-i686-dev
sudo apt-get install mingw-w64-x86-64-dev
https://blog.csdn.net/zuihaobushi/article/details/90167362

CROSS_COMPILE="x86_64-w64-mingw32-" ./Configure mingw64 no-asm shared --prefix=/opt/mingw64

PATH=$PATH:/opt/mingw64/bin make

sudo PATH=$PATH:/opt/mingw64/bin make install

https://www.cnblogs.com/findumars/p/6372299.html

http://www.blogcompiler.com/2011/12/21/openssl-for-windows/

https://www.perl.org/

msvc

perl Configure --prefix="%CD%\..\MSVC64r\dll" --openssldir="%CD%\..\MSVC64r\dll\ssl" -EHsc -arch:AVX -FS threads no-deprecated shared VC-WIN64A && nmake

./Configure --prefix=$PWD/GCC32r shared mingw --unified && make depend && make && make install

pacman -S base-devel msys2-devel mingw-w64-{x86_64,i686}-toolchain

perl Configure mingw64 no-shared --prefix=/d/Code/openssl-1.0.2a/build-x64-PT-seh

./Configure threads no-deprecated shared mingw64 >_Configure.log && make

perl Configure -MTd threads no-deprecated no-shared debug-VC-WIN64A && nmake

'/MDd' for Debug+Shared build,
'/MD' for Release+Shared build,
'/MT' for Release+Static build,
as expected according to its description. But for some reason it add
'/MT' and '/MDd' keys, instead of '/MTd', for Debug+Static build.

./Configure --prefix="$PWD/../GCC64d" -std=gnu11 -mtune=native -march=native threads no-deprecated shared debug-mingw64 >_Configure.log && ma ke

./configure --prefix="$BASEDIR" \ --with-mibdirs="$BASEDIR/share/snmp/mibs" \ --with-mib-modules="agentx disman/event-mib winExtDLL "\ --disable-embedded-perl --without-perl-modules --enable-ipv6

./Configure --prefix="$PWD/../GCC64r" -std=gnu11 -mtune=native -march=native threads no-deprecated shared mingw64 && make

perl Configure mingw64 --cross-compile-prefix=x86_64-w64-mingw32-

Then I make with no problems:
make

Then I test:
make test

    perl Configure VC-WIN64A shared --prefix=\dev\openssl-1.1.1 /FS
    jom -j 8

    perl Configure VC-WIN64A shared --prefix=\dev\openssl /FS
    jom -j 8

perl Configure mingw no-shared no-asm --prefix=/c/OpenSSL
make depend
make

git config core.autocrlf false
git rm --cached -r .
git reset --hard

git config --local core.autocrlf false
git config --local core.eol lf

git rm --cached -r .
git reset --hard

前文 git等各种源码仓库

https://www.cnblogs.com/marklove/p/11831539.html

git clone https://github.com/openssl/openssl

git submodule update --init --recursive

./configure mingw64 shared

./Configure mingw64 初始化配置 2

pacman -S base-devel

pacman -S mingw-w64-x86_64-toolchain

/*pacman -S mingw64/mingw-w64-x86_64-gcc*/

windows

刚开始编译时提示找不到gcc

添加环境变量
export PATH=$PATH:/mingw64/bin
$source /etc/profile

将openssl源码复制到C:\msys64\home\world下

MSYS2 SHELL

切换到

/home/world/openssl

./Configure mingw64

make

============================================

ubuntu下

进去openssl

perl Configure gcc shared

make

常用软件包我们可以简单的使用命令直接从官网安装即可，比如安装openssl：

32bit：pacman -S mingw-w64-i686-openssl
64bit: pacman -S mingw-w64-x86_64-openssl

有时候根据项目需要我们不得不自己动手编译依赖的软件包，以下是我在工作用到的库编译过程记录。

openssl

64bit

mkdir openssl64
cd openssl64
tar zxvf openssl-1.0.2c.tar.gz
cd openssl-1.0.2c
./configure mingw64 shared
make
make INSTALL_PREFIX=../ install

32bit

mkdir openssl32
cd openssl32
tar zxvf openssl-1.0.2c.tar.gz
cd openssl-1.0.2c
./configure mingw shared
make
make INSTALL_PREFIX=../ install

zlib

32bit
mkdir zlib32 cd zlib32 tar zxvf zlib-1.2.8.tar.gz cd zlib-1.2.8/ make -f ./win32/Makefile.gcc make make install -f win32/Makefile.gcc DESTDIR=../

通常Linux系统自带OpenSSL，但是其so文件由于没有debug信息，因此无法跟踪内部函数，对于学习
不太方便，需要通过源码重新安装。
        我的Linux系统是CentOS7，自带的OpenSSL的版本是1.0.1e。在网上下载了OpenSSL1.0.1f后，通过
如下方法安装
[html] view plain copy
 

    ./config --prefix=/usr/local --openssldir=/usr/local/ssl    
    make && make install    
    ./config -d shared --prefix=/usr/local --openssldir=/usr/local/ssl    
    make clean    
    make && make install    


        先安装静态库版本，再安装动态库版本。安装目录为/usr/local下。安装动态库时增加-d选项，因为
调试时使用动态库，需要跟踪代码。
        这样后面就可以写调试代码调试，如下面的例子：

#include <stdio.h>
#include <string.h>
#include <openssl/bio.h>
int main()
{
BIO *b = NULL;
int len = 0;
char *out = NULL;
b = BIO_new(BIO_s_mem());
 
if (NULL == b)
{
return 0;
}
 
len = BIO_write(b,"openssl",4);
len = BIO_printf(b,"%s","zcp");
len = BIO_ctrl_pending(b);
 
out = (char *)OPENSSL_malloc(len);
if (NULL == out)
{
return 0;
}
memset(out, 0, len);
 
len = BIO_read(b,out,len);
printf("out is : %s\n",out);
 
OPENSSL_free(out);
BIO_free(b);
return 0;
}
    在当前路径下创建一个新的动态库软链接：
    ln -s /usr/local/lib64/libcrypto.so.1.0.0  libcrypto.so.10
   然后gcc编译时指明使用这个libcrypto:
    gcc -g -DDEBUG -o openssl_mem_bio_test openssl_mem_bio_test.c -lcrypto -Wl,-rpath=.

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