[OE-core] [PATCH 1/2] Allow passthrough of important placement variables when using devshell

[blloyd]

The environment is very well sanitized when using the shell.  However, when using devshell developers are typically interested in sources and build artifacts.  The variables B S and D control this but are cleaned from the environment when a shell is started.  Add a new variable to allow additional variables to be kept for a developer shell and set it to "B S D" by default.  The implementation allows variables for developer convenience and verification while not changing shells used for compile tasks.

Signed-off-by: blloyd <blloyd at familyhonor.net>
---
 meta/classes/devshell.bbclass | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/meta/classes/devshell.bbclass b/meta/classes/devshell.bbclass
index 92edb9e..cc1bb64 100644
--- a/meta/classes/devshell.bbclass
+++ b/meta/classes/devshell.bbclass
@@ -2,7 +2,17 @@ inherit terminal
 
 DEVSHELL = "${SHELL}"
 
+OE_DEVSHELL_TERMINAL_ADDL_EXPORTS ?= "B S D"
+OE_DEVSHELL_TERMINAL_ADDL_EXPORTS[type] = 'list'
+
 python do_devshell () {
+    import oe.data
+    import oe.terminal
+    export_dev=d.getVar('OE_DEVSHELL_TERMINAL_ADDL_EXPORTS') 
+    export_term=d.getVar('OE_TERMINAL_EXPORTS')
+    export_term = export_term + ' ' + export_dev
+    d.setVar('OE_TERMINAL_EXPORTS', export_term)
+
     if d.getVarFlag("do_devshell", "manualfakeroot"):
        d.prependVar("DEVSHELL", "pseudo ")
        fakeenv = d.getVar("FAKEROOTENV", True).split()
-- 
1.8.1.4