How to compile a BlueZ application for ARM-Linux (IMX6UL)? - c

Question

I want to cross compile an application from my workstation (x86, linux) for an ARM application processor.
still now ,I have finished these as blow:
1, for PC ,Ubuntu 16.04，it supports BlueZ already ,I can use Bluetoothctl\hcitool\hciattach in Ubuntu now.
2, for ARM,Linux 4.1 ,it supports BlueZ too,I can use Bluetoothctl\hcitool\hciattachin ARM CHIP.
my demo code is from
https://people.csail.mit.edu/albert/bluez-intro/c404.html
the function of the code below is to scan Bluetooth device .
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/socket.h>
#include <bluetooth/bluetooth.h>
#include <bluetooth/hci.h>
#include <bluetooth/hci_lib.h>
int main(int argc, char **argv)
{
inquiry_info *ii = NULL;
int max_rsp, num_rsp;
int dev_id, sock, len, flags;
int i;
char addr[19] = { 0 };
char name[248] = { 0 };
dev_id = hci_get_route(NULL);
sock = hci_open_dev( dev_id );
if (dev_id < 0 || sock < 0) {
perror("opening socket");
exit(1);
}
len = 8;
max_rsp = 255;
flags = IREQ_CACHE_FLUSH;
ii = (inquiry_info*)malloc(max_rsp * sizeof(inquiry_info));
num_rsp = hci_inquiry(dev_id, len, max_rsp, NULL, &ii, flags);
if( num_rsp < 0 ) perror("hci_inquiry");
for (i = 0; i < num_rsp; i++) {
ba2str(&(ii+i)->bdaddr, addr);
memset(name, 0, sizeof(name));
if (hci_read_remote_name(sock, &(ii+i)->bdaddr, sizeof(name),
name, 0) < 0)
strcpy(name, "[unknown]");
printf("%s %s\n", addr, name);
}
free( ii );
close( sock );
return 0;
}
i build code above by
gcc -o simplescan simplescan.c -lbluetooth
it is successfully
i got a binary(X86 PC) and i can use it to driver Bluetooth dongle to scan my own cellphone in PC.
still this step ,everything is good ,but I want build this code for ARM,
so I change the gcc --->arm-linux-gnueabihf-gcc
I have test this toolchain already ,for a "helloword" and 'read UART',using this toolchain is no problem .
but when I do # arm-linux-gnueabihf-gcc-o simplescan simplescan.c -lbluetooth. get something wrong.
it shows asm/xxx.h NO such file. (xxx here means so many files ).
I try to use CMD "locate" to search this asm/xxx.h file ,but there are so many asm/xxx.h file with the same name in my PC ,how can I select suitable one? DO I need ARM-Linux source code to build ?
I have no idea now ,please help me , thank you very much !

Answer 1

thanks for the answer of Parthiban！
I set the sysroot to the bsp，then successfully！
you should make sure that Bluetooth.so is exist in the BSP， and the head file below also！
bluetooth.h cmtp.h hci_lib.h l2cap.h sco.h sdp_lib.h
bnep.h hci.h hidp.h rfcomm.h sdp.h
ask Freescale or other chip vendor to get a yocto toolchain for your ARM chip！
root#yjppc:/a_work# $CC -o simplescan simplescan.c --sysroot /opt/myir-imx-fb/4.1.15-2.0.1/sysroots/cortexa7hf-neon-poky-linux-gnueabi/ -lbluetooth
root#yjppc:/a_work# ls
apps material simplescan simplescan.c