我正在使用Yocto项目交叉编译器来编译我的C代码。
但是由于某些原因，我有编译错误。
这是我的 C 代码：
#include <stdio.h>
#include <stdlib.h>
#include "/home/gaston/linux4sam/poky/build-microchip/tmp/sysroots-components/cortexa5hf-neon/mraa/usr/include/mraa.hpp"
/* MRAA does not yet understand GPIO-A - GPIO-L */
/* Linaro will add this */
/* What Mraa does understand is pin out numbers so, */
/* pin 23 is GPIO-A and pin 25 is GPIO-C */
#define LED 10
#define BUTTON 29
bool running = true;
bool led_state = false;
int last_touch;
void sig_handler(int signo)
{
if (signo == SIGINT)
running = false;
}
int main(int argc, char* argv[])
{
mraa::Result ret;
int touch;
mraa::Gpio* touch_gpio = new mraa::Gpio(BUTTON);
if (touch_gpio == NULL){
return mraa::ERROR_UNSPECIFIED;
}
mraa::Gpio* led_gpio = new mraa::Gpio(LED);
if (led_gpio == NULL){
return mraa::ERROR_UNSPECIFIED;
}
signal(SIGINT, sig_handler);
if ((ret = touch_gpio->dir(mraa::DIR_IN))!= mraa::SUCCESS){
return ret;
}
if ((ret = led_gpio->dir(mraa::DIR_OUT))!= mraa::SUCCESS){
return ret;
}
led_gpio->write(led_state);
while (running) {
touch = touch_gpio->read();
if (touch == 1 && last_touch == 0) {
led_state = !led_state;
ret = led_gpio->write(led_state);
usleep(100000);
}
last_touch = touch;
usleep(1);
}
delete led_gpio;
delete touch_gpio;
return ret;
}
这是生成文件：
#CC=arm-poky-linux-gnueabi-gcc -march=armv7-a -marm -mfpu=neon -mfloat-abi=hard -mcpu=cortex-a5 --sysroot=/opt/poky-atmel/2.5.3/sysroots/cortexa5hf-neon-poky-linux-gnueabi
#CC="gcc"
all: last1.o
${CC} last1.o -o target_bin -lmraa
last1.o: last1.c
${CC} -I . -c last1.c
clean:
rm -rf *.o
rm target_bin
这就是我运行make all时得到的：
在文件中包含自/home/gaston/linux4sam/poky/build-microchip/tmp/sysroots-components/cortexa5hf-neon/mraa/usr/include/mraa/common.hpp：28：0， 来自/home/gaston/linux4sam/poky/build-microchip/tmp/sysroots-components/cortexa5hf-neon/mraa/usr/include/mraa.hpp：27， 从最后1.c：4：
/home/gaston/linux4sam/poky/build-microchip/tmp/sysroots-components/cortexa5hf-neon/mraa/usr/include/mraa/types.hpp：32：1： 错误：未知类型名称"命名空间"命名空间 MRAA ^
~~~~~~~~/home/gaston/linux4sam/poky/build-microchip/tmp/sysroots-components/cortexa5hf-neon/mraa/usr/include/mraa/types.hpp：33：1： 错误：在"{"之前应为"="、"、";"、"ASM"或">属性" 令牌 { ^
在文件中包含自/home/gaston/linux4sam/poky/build-microchip/tmp/sysroots-components/cortexa5hf-neon/mraa/usr/include/mraa.hpp：27：0， 来自 last1.c：4：/home/gaston/linux4sam/poky/build-microchip/tmp/sysroots-components/cortexa5hf-neon/mraa/usr/include/mraa/common.hpp：29：10： 致命错误：字符串：没有这样的文件或目录 #include ^~~~~~~~
编译终止。生成文件：8：目标"last1.o"的配方失败 制造： *** [最后1.o] 错误 1
您正在使用C++编译器编译用C编写的代码。
只需将.c文件更改为.cpp文件，并使用g++而不是gcc(如果您使用的是Unix系统(进行编译。