[OE-core] [PATCH] glibc/gcc/libgcc-initial: Reimplement "deltask do_build"

[Yu, Mingli]

Please ignore this patch as the indentation is TAB, will send V2 to use 
four space as indentation.

Thanks,
Mingli

On 2017年11月21日 16:00, mingli.yu at windriver.com wrote:
> From: Mingli Yu <Mingli.Yu at windriver.com>
>
> Previously, "deltask do_build" can result in the
> dependency of do_build lost and can trigger a
> race condition error as below when do_rm_work
> is enabled.
> =================================================
> NOTE: recipe glibc-initial-2.26-r0: task do_fetch: Failed
> ERROR: glibc-initial-2.26-r0 do_fetch: Function failed: extend_recipe_sysroot
> The stack trace of python calls that resulted in this exception/failure was:
> File: 'exec_python_func() autogenerated', lineno: 2, function: <module>
>       0001:
>   *** 0002:extend_recipe_sysroot(d)
>       0003:
> File: '$Prj/layers/oe-core/meta/classes/staging.bbclass', lineno: 410, function: extend_recipe_sysroot
>       0406:    manifests = {}
>       0407:    # All files that we're going to be installing, to find conflicts.
>       0408:    fileset = {}
>       0409:
>   *** 0410:    for f in os.listdir(depdir):
>       0411:        if not f.endswith(".complete"):
>       0412:            continue
>       0413:        f = depdir + "/" + f
>       0414:        if os.path.islink(f) and not os.path.exists(f):
> Exception: FileNotFoundError: [Errno 2] No such file or directory: '$Prj/build/tmp-glibc/work/cortexa8hf-neon-wrs-linux-gnueabi/glibc-initial/2.26-r0/recipe-sysroot-native/installeddeps'
> =================================================
>
> Rewrite the implementation of "deltask do_build" to save
> the dependency before deleting do_build task to avoid the
> race condition.
>
> [YOCTO #12365]
>
> Signed-off-by: Mingli Yu <Mingli.Yu at windriver.com>
> ---
>   meta/recipes-core/glibc/glibc-initial.inc       | 6 +++++-
>   meta/recipes-devtools/gcc/gcc-cross-initial.inc | 6 +++++-
>   meta/recipes-devtools/gcc/libgcc-initial.inc    | 6 +++++-
>   3 files changed, 15 insertions(+), 3 deletions(-)
>
> diff --git a/meta/recipes-core/glibc/glibc-initial.inc b/meta/recipes-core/glibc/glibc-initial.inc
> index b86e2fb2db..4390b6dfca 100644
> --- a/meta/recipes-core/glibc/glibc-initial.inc
> +++ b/meta/recipes-core/glibc/glibc-initial.inc
> @@ -54,4 +54,8 @@ do_siteconfig () {
>   inherit nopackages
>
>   # We really only want this built by things that need it, not any recrdeptask
> -deltask do_build
> +python () {
> +	if bb.data.inherits_class('rm_work', d):
> +		bb.build.exec_func("inject_rm_work", d)
> +	bb.build.deltask('do_build', d)
> +}
> diff --git a/meta/recipes-devtools/gcc/gcc-cross-initial.inc b/meta/recipes-devtools/gcc/gcc-cross-initial.inc
> index 892b1dbf2f..6c0b2eff86 100644
> --- a/meta/recipes-devtools/gcc/gcc-cross-initial.inc
> +++ b/meta/recipes-devtools/gcc/gcc-cross-initial.inc
> @@ -86,4 +86,8 @@ COMPILERINITIAL = "-initial"
>
>
>   # We really only want this built by things that need it, not any recrdeptask
> -deltask do_build
> +python () {
> +	if bb.data.inherits_class('rm_work', d):
> +		bb.build.exec_func("inject_rm_work", d)
> +	bb.build.deltask('do_build', d)
> +}
> diff --git a/meta/recipes-devtools/gcc/libgcc-initial.inc b/meta/recipes-devtools/gcc/libgcc-initial.inc
> index 950ad861e7..cef8257052 100644
> --- a/meta/recipes-devtools/gcc/libgcc-initial.inc
> +++ b/meta/recipes-devtools/gcc/libgcc-initial.inc
> @@ -17,4 +17,8 @@ COMPILERINITIAL = "-initial"
>   inherit nopackages
>
>   # We really only want this built by things that need it, not any recrdeptask
> -deltask do_build
> +python () {
> +	if bb.data.inherits_class('rm_work', d):
> +		bb.build.exec_func("inject_rm_work", d)
> +	bb.build.deltask('do_build', d)
> +}
>