交叉编译 OpenSSH 时出错(嵌入式 Linux)

Error cross compiling OpenSSH (Embedded Linux)

到目前为止已经学习了很多教程并且遇到了各种错误。以下是我遵循并最终在 OpenSSH 编译时出现错误的完整分步过程。

下载Zlib并交叉编译($HOME/Desktop/Zlib/zlib-1.2.5/output)

cd /home/armsdk/Desktop/
mkdir zlib
cd Zlib
wget http://www.zlib.net/fossils/zlib-1.2.5.tar.gz
tar xzvf zlib-1.2.5.tar.gz
cd zlib-1.2.5
mkdir output
./configure --prefix=/home/armsdk/Desktop/Zlib/zlib-1.2.5/output CC=arm-cortexa9-linux-gnueabi-gcc 
make
make install

已下载 OpenSSL 并交叉编译:($HOME/Desktop/OpenSSL/OpenSSL_CC)

mkdir OpenSSL
cd OpenSSL
wget http://www.openssl.org/source/openssl-1.0.1g.tar.gz
tar xzvf openssl-1.0.1g.tar.gz      
cd openssl-1.0.1g/
export cross=arm-cortexa9-linux-gnueabi-
./Configure dist --prefix=$HOME/Desktop/OpenSSL/OpenSSL_CC
make CC="${cross}gcc" AR="${cross}ar r" RANLIB="${cross}ranlib"
make install

交叉编译 OpenSSH :

./configure --prefix=$HOME/Desktop/OpenSSH/OpenSSH_CC --host=arm --with-libs --with-zlib=$HOME/Desktop/Zlib/zlib-1.2.5/output --with-ssl-dir=$HOME/Desktop/OpenSSL/OpenSSL_CC --disable-etc-default-login CC=arm-cortexa9-linux-gnueabi-gcc AR=arm-cortexa9-linux-gnueabi-ar
make

获取密码错误:

openbsd-compat//libopenbsd-compat.a(xcrypt.o): In function `xcrypt':
/home/armsdk/Desktop/OpenSSH/openssh-5.2p1/openbsd-compat/xcrypt.c:78: undefined reference to `crypt'
collect2: error: ld returned 1 exit status

请帮我解决。我只需要使用 gdbServer 进行远程调试的 SFTP-Server(通过 Eclipse)


在系统 运行 上编译:Debian Wheezy

目标板:嘉乐TX6S

目标处理器:NXP i.MX6S7

主机Linux版本:3.16.0-0.bpo.4-amd64

目标Linux版本:4.4.0-00118-g26d6b51

交叉编译器:gcc-arm-cortexa9-linux-gnueabi


更新一:

添加以下行给出错误:

-I/home/armsdk/Desktop/OpenSSL/OpenSSL_CC/include

错误

 configure: error: unrecognized option: -I/home/armsdk/Desktop/OpenSSL/OpenSSL_CC/include

尝试过这个,但 CRYPT 错误仍然存​​在。

--includedir=/home/armsdk/Desktop/OpenSSL/OpenSSL_CC/include

更新二:

按照此处的建议尝试了 -lcrypt 标志:undefined reference to `crypt'但这没有任何错误变化。

make clean
make -lcrypt

更新 3: 添加了 'CFLAGS=-lcrypt',现在错误已更改

./configure --prefix=$HOME/Desktop/OpenSSH/OpenSSH_CC --host=arm --with-libs --with-zlib=$HOME/Desktop/Zlib/zlib-1.2.5/output --with-ssl-dir=$HOME/Desktop/OpenSSL/OpenSSL_CC --disable-etc-default-login CC=arm-cortexa9-linux-gnueabi-gcc AR=arm-cortexa9-linux-gnueabi-ar CFLAGS=-lcrypt

错误

openbsd-compat//libopenbsd-compat.a(xcrypt.o): In function `xcrypt':
xcrypt.c:(.text+0x2c): undefined reference to `crypt'
collect2: error: ld returned 1 exit status
make: *** [sshd] Error 1

更新四: 更新 LDFLAGS 和 CFLAGS 如下:

./configure --prefix=$HOME/Desktop/OpenSSH/OpenSSH_CC --host=arm --with-libs --with-zlib=$HOME/Desktop/Zlib/zlib-1.2.5/output --with-ssl-dir=$HOME/Desktop/OpenSSL/OpenSSL_CC --disable-etc-default-login CC=arm-cortexa9-linux-gnueabi-gcc AR=arm-cortexa9-linux-gnueabi-ar LDFLAGS=-L/home/cross-gcc-4.9.1-2.19-18-armv7a-soft/x86_64-pc-linux-gn‌​‌​u/arm-cortexa9-lin‌​ux‌​-gnueabi/sys-roo‌​t/li‌​b CFLAGS=-lcrypt

问题还是一样:

openbsd-compat//libopenbsd-compat.a(xcrypt.o): In function `xcrypt':
xcrypt.c:(.text+0x2c): undefined reference to `crypt'
collect2: error: ld returned 1 exit status
make: *** [sshd] Error 1

更新5:

我终于成功“制作”了,但无法'make install'

./configure --prefix=$HOME/Desktop/OpenSSH/OpenSSH_CC --host=arm --with-libs --with-zlib=$HOME/Desktop/Zlib/zlib-1.2.5/output --with-ssl-dir=$HOME/Desktop/OpenSSL/OpenSSL_CC --disable-etc-default-login CC=arm-cortexa9-linux-gnueabi-gcc AR=arm-cortexa9-linux-gnueabi-ar LDFLAGS='-L/home/cross-gcc-4.9.1-2.19-18-armv7a-soft/x86_64-pc-linux-gn‌​‌​u/arm-cortexa9-lin‌​ux‌​-gnueabi/sys-roo‌​t/li‌​b -lcrypt'

make    
make install

'make install'

时出错
(umask 022 ; ./mkinstalldirs /var/empty)
/usr/bin/install -c -m 0755 -s ssh /home/armsdk/Desktop/OpenSSH/OpenSSH_CC/bin/ssh
strip: Unable to recognise the format of the input file `/home/armsdk/Desktop/OpenSSH/OpenSSH_CC/bin/ssh'
/usr/bin/install: strip process terminated

更新 6:希望是最终版本

所以我终于能够通过添加标志“--disable-strip”来生成输出

./configure --prefix=$HOME/Desktop/OpenSSH/OpenSSH_CC --host=arm --disable-strip --with-libs --with-zlib=$HOME/Desktop/Zlib/zlib-1.2.5/output --with-ssl-dir=$HOME/Desktop/OpenSSL/OpenSSL_CC --disable-etc-default-login CC=arm-cortexa9-linux-gnueabi-gcc AR=arm-cortexa9-linux-gnueabi-ar LDFLAGS='-L/home/cross-gcc-4.9.1-2.19-18-armv7a-soft/x86_64-pc-linux-gn‌​‌​u/arm-cortexa9-lin‌​ux‌​-gnueabi/sys-roo‌​t/li‌​b -lcrypt'
make
make install

不过有一个小问题,我遇到了这个错误:

mkdir /home/armsdk/Desktop/OpenSSH/OpenSSH_CC/etc
./ssh-keygen: 1: ./ssh-keygen: Syntax error: word unexpected (expecting ")")
./ssh-keygen: 1: ./ssh-keygen: Syntax error: word unexpected (expecting ")")
./ssh-keygen: 1: ./ssh-keygen: Syntax error: word unexpected (expecting ")")
make: *** [host-key] Error 2

您需要将 -lcrypt 添加到 LDFLAGS,因为它是传递给链接器的内容(而不是 `CFLAGS)。

解决方案是

Add the libcrypt path to the compiler, for some reason the compiler couldnt find the right library

LDFLAGS='-L/home/cross-gcc-4.9.1-2.19-18-armv7a-soft/x86_64-pc-linux-gn‌​‌​u/arm-cortexa9-lin‌​ux‌​-gnueabi/sys-roo‌​t/li‌​b -lcrypt'

Added '--disable-strip' to overcome the STRIP error with the install command

我的最终配置命令如下所示:

./configure --prefix=$HOME/Desktop/OpenSSH/OpenSSH_CC --host=arm --disable-strip --with-libs --with-zlib=$HOME/Desktop/Zlib/zlib-1.2.5/output --with-ssl-dir=$HOME/Desktop/OpenSSL/OpenSSL_CC --disable-etc-default-login CC=arm-cortexa9-linux-gnueabi-gcc AR=arm-cortexa9-linux-gnueabi-ar LDFLAGS='-L/home/cross-gcc-4.9.1-2.19-18-armv7a-soft/x86_64-pc-linux-gn‌​‌​u/arm-cortexa9-lin‌​ux‌​-gnueabi/sys-roo‌​t/li‌​b -lcrypt'
make
make install

感谢@Jakuje、@Gaurav Pathak 和@k_kaz