如果您编译SDK是在一台安装了32位Linux 的机器上,那么参考“目标系统为64为Linux”文档,即可得到32位的库和例程。
如果您是在安装了64位
Ubuntu16.04
的机器上,需要编译出32位的库,请按照下文操作
sudo apt-get install -y libc6:i386 libstdC++6:i386 gcc:i386
修改平台配置文件
vim src/board/config.ubuntu.x86
增加如下一行
CONFIG_ENV_CFLAGS += -m32
比如:
cat src/board/config.ubuntu.x86
CONFIG_ENV_CFLAGS += \
-Os -Wall \
-g3 --coverage \
-D_PLATFORM_IS_LINUX_ \
-D__UBUNTU_SDK_DEMO__ \
CONFIG_ENV_LDFLAGS += -lpthread -lrt
CONFIG_ENV_LDFLAGS += -m32
OVERRIDE_STRIP := strip
选择平台配置
make reconfig
SELECT A CONFIGURATION:
1) config.macos.make 3) config.ubuntu.x86
2) config.rhino.make 4) config.win7.mingw32
编译
make
获取二进制库
cd output/release/lib
其中有三个主要产物,
它们都是32位架构的
:
可以用如下方式验证,注意
file
命令的输出中,已经显示程序都是32位的了(
ELF 32-bit LSB executable
)。
file output/release/bin/*
output/release/bin/linkkit-example-countdown: ELF 32-bit LSB executable, Intel 80386, ... stripped
output/release/bin/linkkit-example-sched: ELF 32-bit LSB executable, Intel 80386, ... stripped
output/release/bin/linkkit-example-solo: ELF 32-bit LSB executable, Intel 80386, ... stripped
output/release/bin/linkkit_tsl_convert: ELF 32-bit LSB executable, Intel 80386, ... stripped
output/release/bin/mqtt-example: ELF 32-bit LSB executable, Intel 80386, ... stripped
output/release/bin/mqtt-example-multithread: ELF 32-bit LSB executable, Intel 80386, ... stripped
output/release/bin/mqtt-example-rrpc: ELF 32-bit LSB executable, Intel 80386, ... stripped
output/release/bin/ota-example-mqtt: ELF 32-bit LSB executable, Intel 80386, ... stripped
output/release/bin/sdk-testsuites: ELF 32-bit LSB executable, Intel 80386, ... stripped
output/release/bin/uota_app-example: ELF 32-bit LSB executable, Intel 80386, ... stripped
使用cmake方式编译
修改CMakeLists.txt 文件
在默认的文件中修改CFLAGS,加入-m32
。
SET (CMAKE\_C\_FLAGS " -Iexamples -Os -Wall")
改成
SET (CMAKE\_C\_FLAGS " -Iexamples -Os -Wall -m32")
从CMakeLists.txt构建makefile
mkdir ooo
cd ooo
cmake ..
编译
make -j32
产物
~/srcs/iotx-sdk-c/ooo\$ ls
bin CMakeCache.txt CMakeFiles cmake\_install.cmake examples lib Makefile src tests
可执行程序在bin/
目录下:
ls bin/
linkkit-example-countdown linkkit-example-sched linkkit-example-solo linkkit\_tsl\_convert
mqtt-example mqtt\_example\_multithread mqtt\_example\_rrpc ota-example-mqtt uota\_app-example
可以用如下方式验证,注意file
命令的输出中,已经显示程序都是32位的了(ELF 32-bit LSB executable
)。
file ooo/bin/\*
ooo/bin/linkkit-example-countdown: ELF 32-bit LSB executable, Intel 80386, ... stripped
ooo/bin/linkkit-example-sched: ELF 32-bit LSB executable, Intel 80386, ... stripped
ooo/bin/linkkit-example-solo: ELF 32-bit LSB executable, Intel 80386, ... stripped
ooo/bin/linkkit\_tsl\_convert: ELF 32-bit LSB executable, Intel 80386, ... stripped
ooo/bin/mqtt-example: ELF 32-bit LSB executable, Intel 80386, ... stripped
ooo/bin/mqtt-example-multithread: ELF 32-bit LSB executable, Intel 80386, ... stripped
ooo/bin/mqtt-example-rrpc: ELF 32-bit LSB executable, Intel 80386, ... stripped
ooo/bin/ota-example-mqtt: ELF 32-bit LSB executable, Intel 80386, ... stripped
ooo/bin/sdk-testsuites: ELF 32-bit LSB executable, Intel 80386, ... stripped
ooo/bin/uota\_app-example: ELF 32-bit LSB executable, Intel 80386, ... stripped
二进制库在lib/
目录下:
ls lib/
libiot\_hal.so libiot\_sdk.so libiot\_tls.so