[master][dora][PATCH 1/2] perf: disallow debug optimization.

[Mark Hatle <mark.hatle@windriver.com>]

From: Randy MacLeod <Randy.MacLeod@windriver.com>

perf fails to compile if someone tries to compile an entire image as -O0
so in this case, force to use -O2 and give a note about it.

Signed-off-by: Randy MacLeod <Randy.MacLeod@windriver.com>
---
 meta/recipes-kernel/perf/perf.bb | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/meta/recipes-kernel/perf/perf.bb b/meta/recipes-kernel/perf/perf.bb
index 269069f..138595d 100644
--- a/meta/recipes-kernel/perf/perf.bb
+++ b/meta/recipes-kernel/perf/perf.bb
@@ -60,6 +60,17 @@ B = "${WORKDIR}/${BPN}-${PV}"
 SCRIPTING_DEFINES = "${@perf_feature_enabled('perf-scripting', '', 'NO_LIBPERL=1 NO_LIBPYTHON=1',d)}"
 TUI_DEFINES = "${@perf_feature_enabled('perf-tui', '', 'NO_NEWT=1',d)}"
 
+# perf 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)
+    if base_contains("SELECTED_OPTIMIZATION", "-O0", "x", "", d) == "x":
+        bb.note("eglibc 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)}"
+
 # The LDFLAGS is required or some old kernels fails due missing
 # symbols and this is preferred than requiring patches to every old
 # supported kernel.
-- 
1.8.1.2.545.g2f19ada