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a42b2bf96e
perf has been failing our reproducible testing due to multiple symbols
containg build paths.
With this commit, we fix the issues:
1) The following line in the Makefle:
override PYTHON := $(call get-executable-or-default,PYTHON,$(PYTHON_AUTO))
"PYTHON" / "PYTHON_AUTO" have the full path as part of the variable. We've
ensure that the environment is setup and we do not need the full path to be
captured, since the symbol gets built into the executable, making it not
reproducible.
2) The following line:
srcdir_SQ = $(patsubst %tools/perf,tools/perf,$(subst ','\'',$(srcdir))),
Captures the full src path of perf, which of course makes it not
reproducible. We really only need the relative location 'tools/perf', so we
change the Makefile line to remove everything before 'tools/perf'
3) OUTPUT is the full path, we have python on the path so we remove it from the
definition. This is captured in the perf binary, so breaks reproducibility
PYTHONPATH="BUILD_STR(python)
4) To avoid bison generating #ifdefs that have captured paths, we make sure
all the calls have YFLAGS, which contains prefix mapping information.
Upstream-status: OE specific to our cross/build environments. Variants
will be developed for upstream
(From OE-Core rev: dea57aa1cd879df4feae1b9595b38c5b6ff74574)
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.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.