From 4abb20e321626c3d3cb0e922eac2048dc15d7c87 Mon Sep 17 00:00:00 2001 From: Andrew Cooper Date: Thu, 11 Feb 2021 14:22:44 +0000 Subject: [PATCH] tools: Use -Og for debug builds when available The recommended optimisation level for debugging is -Og, and is what tools such as gdb prefer. In practice, it equates to -01 with a few specific optimisations turned off. abi-dumper in particular wants the libraries it inspects in this form. Signed-off-by: Andrew Cooper Reviewed-by: Jan Beulich Acked-by: Ian Jackson Release-Acked-by: Ian Jackson --- tools/Rules.mk | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/tools/Rules.mk b/tools/Rules.mk index f61da81f4a..2907ed2d39 100644 --- a/tools/Rules.mk +++ b/tools/Rules.mk @@ -106,8 +106,9 @@ endif CFLAGS_libxenlight += $(CFLAGS_libxenctrl) ifeq ($(debug),y) -# Disable optimizations -CFLAGS += -O0 -fno-omit-frame-pointer +# Use -Og if available, -O0 otherwise +dbg_opt_level := $(call cc-option,$(CC),-Og,-O0) +CFLAGS += $(dbg_opt_level) -fno-omit-frame-pointer # But allow an override to -O0 in case Python enforces -D_FORTIFY_SOURCE=. PY_CFLAGS += $(PY_NOOPT_CFLAGS) else -- 2.30.2