Build fails on Linux: implicit declaration of function ‘ioctl'

[dimich-dmb]

$ make
gcc -std=gnu99 -g -fno-pie -rdynamic -fPIC -Wall -o dwdebug src/dwdebug.c -lusb -ldl
In file included from src/system/system.c:5,
                 from src/dwdebug.c:3:
src/system/SerialPort.c: In function ‘MakeSerialPort’:
src/system/SerialPort.c:81:9: error: implicit declaration of function ‘ioctl’ [-Wimplicit-function-declaration]
   81 |     if (ioctl(*SerialPort, TCGETS2, &config)) {Close(*SerialPort); *SerialPort = 0; return;}
      |         ^~~~~
make: *** [Makefile:48: dwdebug] Error 1

Arch Linux x86_64, glibc-2.39.

In Linux, ioctl() is defined in sys/ioctl.h but in src/system/SerialPort.c it is included only if __APPLE__ is defined. Naive attempt to include sys/ioctl.h into SerialPort.c leads to following errors:

$ make
gcc -std=gnu99 -g -fno-pie -rdynamic -fPIC -Wall -o dwdebug src/dwdebug.c -lusb -ldl
In file included from /usr/include/sys/ioctl.h:29,
                 from src/system/SerialPort.c:11,
                 from src/system/system.c:5,
                 from src/dwdebug.c:3:
/usr/include/bits/ioctl-types.h:27:8: error: redefinition of ‘struct winsize’
   27 | struct winsize
      |        ^~~~~~~
In file included from /usr/include/asm/termios.h:1,
                 from src/system/SystemServices.c:37,
                 from src/system/system.c:1:
/usr/include/asm-generic/termios.h:15:8: note: originally defined here
   15 | struct winsize {
      |        ^~~~~~~
/usr/include/bits/ioctl-types.h:36:8: error: redefinition of ‘struct termio’
   36 | struct termio
      |        ^~~~~~
/usr/include/asm-generic/termios.h:23:8: note: originally defined here
   23 | struct termio {
      |        ^~~~~~
make: *** [Makefile:48: dwdebug] Error 1

Following patch seems to fix the issue, but it's hard to create proper pull request due to mess of C sources inclusions. I can't be sure it doesn't break build in other systems.

diff --git a/src/system/SystemServices.c b/src/system/SystemServices.c
index 7d75f87..ea4a0a6 100644
--- a/src/system/SystemServices.c
+++ b/src/system/SystemServices.c
@@ -34,7 +34,8 @@
 #ifndef __linux__
   #include <stropts.h>
 #endif
-#include <asm/termios.h>
+  #include <asm/termbits.h>
+  #include <sys/ioctl.h>
 #endif
   #include <setjmp.h>