systemtap_git.inc: do not immediate expand SELECTED_OPTIMIZATION

We need to expand SELECTED_OPTIMIZATION later, so
do not immediate expansion, and do the work in
anonymous python function.

It is reasonable to give an error for -O0.

[YOCTO #7058]

Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 4 insertions, 8 deletions

diff --git a/meta/recipes-kernel/systemtap/systemtap_git.inc b/meta/recipes-kernel/systemtap/systemtap_git.inc
index 7f9ae0b522..656f15f808 100644
--- a/meta/recipes-kernel/systemtap/systemtap_git.inc
+++ b/meta/recipes-kernel/systemtap/systemtap_git.inc
@@ -17,12 +17,8 @@ COMPATIBLE_HOST = '(x86_64|i.86|powerpc|arm|aarch64).*-linux'
 S = "${WORKDIR}/git"
 
 # systemtap can't be built without optimization, if someone tries to compile an
-# entire image as -O0, we override it with -O2 here and give a note about it.
-def get_optimization(d):
-    selected_optimization = d.getVar("SELECTED_OPTIMIZATION", True)
+# entire image as -O0, break with fatal.
+python () {
     if bb.utils.contains("SELECTED_OPTIMIZATION", "-O0", "x", "", d) == "x":
-        bb.note("systemtap can't be built with -O0, -O2 will be used instead.")
-        return selected_optimization.replace("-O0", "-O2")
-    return selected_optimization
-
-SELECTED_OPTIMIZATION := "${@get_optimization(d)}"
+        bb.fatal("systemtap can't be built with -O0, using -O1 -Wno-error or -O1 instead.")
+}