[PATCH] lttng-ust: Patch python shebang appropriately for native builds

[Phil Blundell <pb@pbcl.net>]

If we are building a native package then ${bindir}/python3 is not guaranteed
to be available, and if it is available then it is probably a directory not a
file.  In either case, attempting to use it as an interpreter will not end
well.  Let's use ${bindir}/nativepython instead.

Signed-off-by: Phil Blundell <philb@gnu.org>
---
 meta/recipes-kernel/lttng/lttng-ust_git.bb | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/meta/recipes-kernel/lttng/lttng-ust_git.bb b/meta/recipes-kernel/lttng/lttng-ust_git.bb
index 5869093..df22352 100644
--- a/meta/recipes-kernel/lttng/lttng-ust_git.bb
+++ b/meta/recipes-kernel/lttng/lttng-ust_git.bb
@@ -29,10 +29,12 @@ SRC_URI = "git://git.lttng.org/lttng-ust.git;branch=stable-2.7 \
 
 PACKAGECONFIG[manpages] = "--enable-man-pages, --disable-man-pages, asciidoc-native xmlto-native libxslt-native"
 
+usepython="${bindir}/python3"
+usepython_class-native="${bindir}/nativepython"
 do_install_append() {
         # Patch python tools to use Python 3; they should be source compatible, but
         # still refer to Python 2 in the shebang
-        sed -i -e '1s,#!.*python.*,#!${bindir}/python3,' ${D}${bindir}/lttng-gen-tp
+        sed -i -e '1s,#!.*python.*,#!${usepython},' ${D}${bindir}/lttng-gen-tp
 }
 
 S = "${WORKDIR}/git"
-- 
2.10.1