wpa_supplicant 的编译

1. wpa_supplicant的编译需要用到的3个源码包，分别是wpa_supplicant, openssl, libnl

wpa_supplicant的下载地址：http://w1.fi/releases/

openssl的下载地址：https://www.openssl.org/so

libnl的下载地址：http://www.infradead.org/~tgr/libnl/files/

2. x86编译

后面编译 wpa_supplicant 2.6时报错，"can't find -lnl"，所以编译 libnl-1.1.4。
./configure --prefix=/home/henry/wpa/libnl-1.1.4/out

先装依赖库

sudo apt-get install bison

sudo apt-get install flex

./configure --prefix=/home/henry/wpa/libnl-1.1.4/out

make
make check
make install
// to install the API documentation:
mkdir -vp /home/henry/wpa/libnl-1.1.4/out/libnl/doc
tar -xf ../libnl-doc-1.1.4.tar.gz --strip-components=1 --no-same-owner -C /home/henry/wpa/libnl-1.1.4/out/libnl/doc

openssl的编译：

./config shared --prefix=/home/henry/wpa/openssl-1.1.1/out/ssl/prefix --openssldir=/home/henry/wpa/openssl-1.1.1/out/ssl/configuration
make
make test
make install

wpa_supplicant的编译

cd ~/wpa/wpa_supplicant-2.6/wpa_supplicant
cp defconfig .config
修改配置文件 .config，在"#Uncomment following two linee and fix..."下增加如下语句，用来添加openssl和libnl的头文件和库文件目录，更新编译链接环境变量：
CFLAGS += -I/home/henry/wpa/openssl-1.1.1/out/prefix/include
CFLAGS += -I/home/henry/wpa/libnl-1.1.4/out/include
LIBS += -L/home/henry/wpa/openssl-1.1.1/out/prefix/lib
LIBS += -L/home/henry/wpa/libnl-1.1.4/out/lib

LIBS_p += -L/home/henry/wpa/openssl-1.1.1/out/ssl/prefix/lib (否则找不到libcripto)

执行 make 进行编译，成功后生成三个目标文件 wpa_supplicant, wpa_cli, wpa_passphrase 。

3. armv7交叉编译

3.1 需要下载如下包:

libnl-1.1.4.tar.gz

openssl-1.0.2r.tar.gz

wpa_supplicant-2.6.tar.gz

3.2 设置arm编译工具的PATH

3.3 先装依赖库

sudo apt-get install bison

sudo apt-get install flex

3.4 编译libnl1.1.4

cd lib

rm -f libnl.a =========>作者上传了x86的库，如不删除，编译wpa_supplicant时会报libnl.a的格式错误，可以用objdump -a libnl.a查看库信息

make mylibs ========>建立prefix 目录

./configure --prefix=/home/cdc/wpa_supplicant/libnl-1.1.4/mylibs CC=arm-linux-gnueabihf-gcc CXX=arm-linux-gnueabihf-g++ AR=arm-linux-gnueabihf-ar LD=arm-linux-gnueabihf-ld -host=arm-linux

make

make install

3.5 编译openssl1.0.2r

mkdir mylibs ========>建立prefix 目录

./config no-asm shared --prefix=/home/cdc/wpa_supplicant/openssl-1.0.2r/mylibs

vi Makefile

PLATFORM=mips-linux-gnu

CONFIGURE_ARGS=mips-linux-gnu ...

CC=$(CROSS_COMPILE)mips-linux-gnu-gcc
CXX=$(CROSS_COMPILE)mips-linux-gnu-g++

CFLAGS=-Wall -g -EL -O3 -fomit-frame-pointer
CXXFLAGS=-Wall -g -EL -O3

MAKEDEPEND=$(CROSS_COMPILE)mips-linux-gnu-gcc

AR=$(CROSS_COMPILE)mips-linux-gnu-ar

RANLIB=$(CROSS_COMPILE)mips-linux-gnu-ranlib

删除 -m32 -m64 选项

3.6 编译及安装

make

make install

3.7 wpa_supplicant编译

cd wpa_supplicant-2.6/wpa_supplicant
cp defconfig .config

vi .config

# Uncomment following two lines and fix the paths if you have installed OpenSSL

# or GnuTLS in non-default location
CFLAGS += -I/home/cdc/wpa_supplicant/inc ==============>把前面编译的libnl, openssl时，在mylibs下生成的include文件夹下所有文件copy到这个目录
LIBS += -L/home/cdc/wpa_supplicant/lib　　===============>把前面编译的libnl, openssl时，在mylibs下生成的lib文件夹下所有文件copy到这个目录

vi Makefile

vi Makefile, --static是为了静态编译，不用动态库
wpa_supplicant: $(BCHECK) $(OBJS) $(EXTRA_progs)
$(Q)$(LDO) $(LDFLAGS) -o wpa_supplicant $(OBJS) $(LIBS) $(EXTRALIBS)
@$(E) " LD " $@

=============>
wpa_supplicant: $(BCHECK) $(OBJS) $(EXTRA_progs)
$(Q)$(LDO) --static $(LDFLAGS) -o wpa_supplicant $(OBJS) $(LIBS) $(EXTRALIBS) -lm -lpthread
@$(E) " LD " $@

wpa_supplicant wpa_supplicant编译open

wpa_supplicant 的编译

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