[S] Change in coreboot[main]: tests: Add `DEBUG` make commandline option to generate debug symbols

[Julius Werner (Code Review)]

Attention is currently required from: Yu-Ping Wu.

Hello Yu-Ping Wu,

I'd like you to do a code review.
Please visit

https://review.coreboot.org/c/coreboot/+/81112?usp=email

to review the following change.

Change subject: tests: Add `DEBUG` make commandline option to generate debug symbols
......................................................................

tests: Add `DEBUG` make commandline option to generate debug symbols

Sometimes when a test doesn't work it's convenient to run it through
GDB. This patch adds a variable you can set on the make commandline to
conveniently enable all the compiler flags needed to make that work.

Change-Id: I3ac80ad095e0b72cc3176cbf915d1f390cd01558
Signed-off-by: Julius Werner 
---
M payloads/libpayload/tests/Makefile.mk
M tests/Makefile.common
2 files changed, 14 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/12/81112/1

diff --git a/payloads/libpayload/tests/Makefile.mk b/payloads/libpayload/tests/Makefile.mk
index e271a7c..9bac9e6 100644
--- a/payloads/libpayload/tests/Makefile.mk
+++ b/payloads/libpayload/tests/Makefile.mk
@@ -47,7 +47,13 @@
 TEST_CFLAGS += -Wstrict-aliasing -Wshadow -Werror
 TEST_CFLAGS += -Wno-unknown-warning-option -Wno-source-mgr -Wno-main-return-type

-TEST_CFLAGS += -std=gnu11 -Os -ffunction-sections -fdata-sections -fno-builtin
+TEST_CFLAGS += -std=gnu11 -ffunction-sections -fdata-sections -fno-builtin
+
+ifneq ($(filter-out 0,$(DEBUG)),)
+TEST_CFLAGS += -Og -ggdb3
+else
+TEST_CFLAGS += -Os
+endif

# Make unit-tests detectable by the code
 TEST_CFLAGS += -D__TEST__
diff --git a/tests/Makefile.common b/tests/Makefile.common
index 5cb7b25..ace16d2 100644
--- a/tests/Makefile.common
+++ b/tests/Makefile.common
@@ -51,7 +51,13 @@
 TEST_CFLAGS += -Wno-array-compare -Wno-packed-not-aligned -Wno-trigraphs
 TEST_CFLAGS += -Wno-unused-but-set-variables

-TEST_CFLAGS += -std=gnu11 -Os -ffunction-sections -fdata-sections -fno-builtin
+TEST_CFLAGS += -std=gnu11 -ffunction-sections -fdata-sections -fno-builtin
+
+ifneq ($(filter-out 0,$(DEBUG)),)
+TEST_CFLAGS += -Og -ggdb3
+else
+TEST_CFLAGS += -Os
+endif

TEST_CFLAGS += -D__TEST__