[OE-core] [PATCH] meson.bbclass: Fix build issues with /tmp mounted with noexec

[Khem Raj]

On Wed, Oct 10, 2018 at 12:36 PM Mark Asselstine
<mark.asselstine at windriver.com> wrote:
>
> Since commit d297f7ebf3f6 [fribidi: use Meson instead of autotools]
> build failures have been observed with this package. The immediate
> issue was related to improperly named #defines per
> https://github.com/fribidi/fribidi/commit/46f52d588ab5, however, the
> root cause was FRIBIDI_SIZEOF_INT getting a value of "-1".
>
> After searching the meson logs the following was found:
>
>   Could not run: /tmp/tmp2fxe6ha1/output.exe (error: [Errno 13] Permission denied)
>   Checking for size of "int": -1
>
> Which pointed to the real root cause being /tmp mounted with noexec, a
> common configuration on Redhat and other distros. This issues has been
> raised in the meson community:
> https://github.com/mesonbuild/meson/issues/2972 but is yet to be
> addressed.
>
> Using the discussion from issue#2972 and the fact that the underlying
> code makes use of python 'tempfile' we can simply create a 'tmp'
> directory and make use of TMPDIR to avoid this issue.
>
> Signed-off-by: Mark Asselstine <mark.asselstine at windriver.com>
> ---
>  meta/classes/meson.bbclass | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/meta/classes/meson.bbclass b/meta/classes/meson.bbclass
> index ed08a40..7e63e12 100644
> --- a/meta/classes/meson.bbclass
> +++ b/meta/classes/meson.bbclass
> @@ -109,6 +109,9 @@ EOF
>  CONFIGURE_FILES = "meson.build"
>
>  meson_do_configure() {
> +    # Work around "Meson fails if /tmp is mounted with noexec #2972"

I would call it a bug in meson not a workaround.

> +    mkdir -p "${B}/meson-private/tmp"
> +    export TMPDIR="${B}/meson-private/tmp"
>      bbnote Executing meson ${EXTRA_OEMESON}...
>      if ! meson ${MESONOPTS} "${MESON_SOURCEPATH}" "${B}" ${MESON_CROSS_FILE} ${EXTRA_OEMESON}; then
>          bbfatal_log meson failed
> --
> 2.7.4
>
> --
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