TP 11 exo2: sync with the latest Makefile version with LTO and GOLD

support.

Signed-off-by: Jérôme Benoit <jerome.benoit@piment-noir.org>

diff --git a/TP_11/exo2/Makefile b/TP_11/exo2/Makefile
index d1ca467374630fe66c8f0d5fbb373b2eb028c211..5555dc6d496a1e3459281169f51d963464b96b67 100644 (file)
--- a/TP_11/exo2/Makefile
+++ b/TP_11/exo2/Makefile
@@ -42,18 +42,31 @@ BUILDDIR := .build/debug
 DEBUG_FLAG = -g
 STRIP_FLAG =
 OPTI_FLAG = -O0
+LTO_SUPPORT = yes
+GOLD_SUPPORT = yes
 else
 BUILDDIR := .build/release
 DEBUG_FLAG =
 STRIP_FLAG = -s
 OPTI_FLAG = -O3
+LTO_SUPPORT = yes
+GOLD_SUPPORT = yes
+endif
+
+ifeq ($(LTO_SUPPORT),yes)
+CFLAGS_LTO = -flto -ffat-lto-objects
+LDFLAGS_LTO = -fuse-linker-plugin -flto
+endif
+
+ifeq ($(GOLD_SUPPORT),yes)
+LDFLAGS_GOLD = -fuse-ld=gold
 endif
 
 # Putting header files in the source directory is not the purpose of this INCLUDES variable
 INCLUDES := $(INCLUDES) -I$(LIBRARY_PATH)
-CFLAGS := $(CFLAGS) $(WARN_FLAGS) $(STD_FLAG) $(OPTI_FLAG) $(DEBUG_FLAG) $(INCLUDES)
+CFLAGS := $(CFLAGS) $(CFLAGS_LTO) $(WARN_FLAGS) $(STD_FLAG) $(OPTI_FLAG) $(DEBUG_FLAG) $(INCLUDES)
 LIBCFLAGS := -fPIC $(CFLAGS)
-LDFLAGS := $(LDFLAGS) $(STRIP_FLAG)
+LDFLAGS := $(LDFLAGS) $(LDFLAGS_LTO) $(LDFLAGS_GOLD) $(STRIP_FLAG)
 LIBLDFLAGS := -shared $(LDFLAGS)
 STATICLIBLDFLAGS := -static $(LDFLAGS)
 LDLIBS := $(LDLIBS) -L$(LIBRARY_PATH) -l$(BINARY_NAME)