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

[Mark Asselstine]

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"
+    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