Zahir Hussain aa02dc871f cmake: Unset CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES
As discussion in [YOCTO #14717] cmake contains a OEToolchainConfig.cmake
file to configure the toolchain correctly in cross-compile build for recipes
using cmake.

The variable CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES value updates incorrectly
during do_compile the code. Due to this getting sporadic error like below,

fatal error: stdlib.h: No such file or directory
|    75 | #include_next <stdlib.h>
|       |               ^~~~~~~~~~
| compilation terminated.
| ninja: build stopped: subcommand failed.
| WARNING: exit code 1 from a shell command.

As cmake already correctly initializes the variable from environment,
So we have to unset it in the toolchain file to avoid overwriting the
variable definition again.

(From OE-Core rev: 7ab6087536bc67c63094f08f863dcd3d5e35b8e7)

Signed-off-by: aszh07 <mail2szahir@gmail.com>
Signed-off-by: Zahir Hussain <zahir.basha@kpit.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 5aeada5793af53e8c93940952d4f314474dca4c2)
Signed-off-by: Steve Sakoman <steve@sakoman.com>
2024-02-16 03:35:51 -10:00
2021-12-08 20:28:01 +00:00
2023-10-24 05:22:46 -10:00

QEMU Emulation Targets
======================

To simplify development, the build system supports building images to
work with the QEMU emulator in system emulation mode. Several architectures
are currently supported in 32 and 64 bit variants:

  * ARM (qemuarm + qemuarm64)
  * x86 (qemux86 + qemux86-64)
  * PowerPC (qemuppc only)
  * MIPS (qemumips + qemumips64)

Use of the QEMU images is covered in the Yocto Project Reference Manual.
The appropriate MACHINE variable value corresponding to the target is given
in brackets.
Description
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