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Ross Burton
7981d54fe6
There have been rare errors during the build of adwaita-icon-theme, such as:
Exception: bb.process.ExecutionError: Execution of '.../temp/run.sysroot_stage_all.45186' failed with exit code 2:
cpio: ./icons/Adwaita/32x32/legacy/_inst.34160_: Cannot stat: No such file or directory
cpio: ./icons/Adwaita/32x32/legacy/_inst.33428_: Cannot stat: No such file or directory
cpio: ./icons/Adwaita/32x32/legacy/_inst.35421_: Cannot stat: No such file or directory
cpio: ./icons/Adwaita/32x32/legacy/_inst.34533_: Cannot stat: No such file or directory
cpio: ./icons/Adwaita/32x32/legacy/_inst.35366_: Cannot stat: No such file or directory
The problem was that a previous optimisation (oe-core cd9af17028) to massively
increase the install speed (by parallelling the hundreds of installs) was subtly
wrong. It was essentially doing this:
for i in list; do
install i &
done
wait
In pure shell this does parallelise the install commands and then wait for them
all to finish before exiting, but in Makefiles *each line in a separate shell*. The actual Makefile is closer to this:
for i in list; do \
install i & \
done
wait
The backslashes are required to write a multi-line for loop in a Makefile, but
note that when the loop ends the shell exits and all of the install processes
that are still running are disowned. The wait command then executes in a new
shell, and there are no childen to wait for.
The fix is trivial: add more backslashes so that the wait is part of the same
shell.
(From OE-Core rev: f969a8ff160390726565421d4c9b367e49172487)
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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.