bitbake.conf: Drop unexports from a different era

A long time ago, we used to pass our parent execution environment into our task
environments during build. We stopped doing that for reproducibility and consistency
of builds. The variables TARGET_ARCH, DISTRO and MACHINE are not exported into
tasks and hence we don't need to unexport them. The resasons these exist is
therefore no longer relavent and they can be removed. This happens to improve
bitbake -e output from a user commandline perspective.

(From OE-Core rev: 8e97ff1560bd563251405cd92b6ccf5c9fcecf4b)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 0 insertions, 13 deletions

diff --git a/meta/conf/bitbake.conf b/meta/conf/bitbake.conf
index 3b8760a3f8..3fa2bee053 100644
--- a/meta/conf/bitbake.conf
+++ b/meta/conf/bitbake.conf
@@ -915,19 +915,6 @@ SERIAL_CONSOLES ??= "${@d.getVar('SERIAL_CONSOLE').replace(' ', ';')}"
 NO_RECOMMENDATIONS ??= ""
 BAD_RECOMMENDATIONS ?= ""
 
-# Make sure MACHINE isn't exported
-# (breaks binutils at least)
-MACHINE[unexport] = "1"
-
-# Make sure TARGET_ARCH isn't exported
-# (breaks Makefiles using implicit rules, e.g. quilt, as GNU make has this
-# in them, undocumented)
-TARGET_ARCH[unexport] = "1"
-
-# Make sure DISTRO isn't exported
-# (breaks sysvinit at least)
-DISTRO[unexport] = "1"
-
 # Make sure SHELL isn't exported
 # (can break any number of things if the user's shell isn't POSIX-compliant,
 # including the flock command). The user's shell shouldn't affect our builds.