openssl for uclinux(嵌入式系统中使用openssl)

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Openssl for uclinux

Software Enviroment

OpenSuse 10.0 Linux
arm-elf toolchains OpenSSL ： 0.9.7c Compiling
1．donwload OpenSSL 0.9.7c from openssl.org2. download the patch for uclinux:
http://ftp.snapgear.org/pub/patches/openssl-0.9.7c.diff
http://ftp.snapgear.org/pub/patches/openssl-0.9.7c_linux_include.diff
http://ftp.snapgear.org/pub/patches/openssl-0.9.7c_makefile.diff

install openssl（we assume the current working directory: uClinux-dist）:

cd lib
tar zxvf ~/tmp/openssl-0.9.7c.tar.gz
mv openssl-0.9.7c libssl
cd libssl
patch -p1 < ~/tmp/openssl.diff

patch the linux kernel：

cd linux-2.4.x/include/openssl
patch -p0 < ~/tmp/openssl_linux_include.diff

patch the openssl makefile.

cd user/openssl
patch -p0 < ~/tmp/openssl_makefile.diff

3． run the configure under the openssl source directory
./configure linux-elf-arm no-shared

4．modify Makefile
replace CC = gcc with CC = arm-elf-gcc
add “-D__PIC__ -fpic -msingle-pic-base -Wl,-elf2flt” to CFLAGS
5． make
6. now we have libssl.a and libcrypto.a in the source directory
7．copy the include and lib files to the arm-elf toolchains directory

Add the Openssl lib in your applications
add “-D__PIC__ -fpic -msingle-pic-base -Wl,-elf2flt” to the CFLAGS，

add –lssl –lcrypto to LDFLAGS

that is all

这篇文章不是我原创的，是参考了很多国外的资料而成的，最后一部分如何正确的在uclinux使用openssl是我加的。本文发在我的blog上: http://www.info-life.cn 或是参考http://www.info-life.cn/?p=22