On Mon, 2023-04-03 at 16:37 +0200, Thomas De Schampheleire wrote: > The qemu build system enables the 'log' trace backend by default, if no > explicit choice was made with '--enable-trace-backend=CHOICE'. > > However, the qemu recipe uses the following PACKAGECONFIG line: > PACKAGECONFIG[ust] = > "--enable-trace-backend=ust,--enable-trace-backend=nop,lttng-ust," > > which means that the 'nop' trace backend will be explicitly selected if the > 'ust' feature is not enabled. The 'nop' backend removes almost all trace > points at compile time, and thus basically means 'disable tracing'. > > To retain the default trace backend if 'ust' is not enabled, the above > PACKAGECONFIG line should either explicitly fall back to the 'log' backend, > or not provide any value for the 'disabled' case. This commit chooses the > latter to not make any assumption about the upstream default. > > Signed-off-by: Thomas De Schampheleire <[email protected]> > --- > meta/recipes-devtools/qemu/qemu.inc | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/meta/recipes-devtools/qemu/qemu.inc > b/meta/recipes-devtools/qemu/qemu.inc > index b41055fe5d..ae99a9e87b 100644 > --- a/meta/recipes-devtools/qemu/qemu.inc > +++ b/meta/recipes-devtools/qemu/qemu.inc > @@ -207,7 +207,7 @@ PACKAGECONFIG[libudev] = > "--enable-libudev,--disable-libudev,eudev" > PACKAGECONFIG[attr] = "--enable-attr,--disable-attr,attr," > PACKAGECONFIG[rbd] = "--enable-rbd,--disable-rbd,ceph,ceph" > PACKAGECONFIG[vhost] = "--enable-vhost-net,--disable-vhost-net,," > -PACKAGECONFIG[ust] = > "--enable-trace-backend=ust,--enable-trace-backend=nop,lttng-ust," > +PACKAGECONFIG[ust] = "--enable-trace-backend=ust,,lttng-ust," > PACKAGECONFIG[pie] = "--enable-pie,--disable-pie,," > PACKAGECONFIG[seccomp] = "--enable-seccomp,--disable-seccomp,libseccomp" > # libnfs is currently provided by meta-kodi
This triggered reproducible build test failures: https://autobuilder.yoctoproject.org/typhoon/#/builders/117/builds/2659/steps/12/logs/stdio which leads to: http://autobuilder.yocto.io/pub/repro-fail/oe-reproducible-20230403-itxd_s50/packages/diff-html/ i.e. the paths to files is being encoded the target source package files. We'll need to resolve that issue before we can turn the default tracing on. Cheers, Richard
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