Changes in kernel/Makefile [a721f6a:f8d07859] in mainline

File:

• kernel/Makefile (modified) (11 diffs)

kernel/Makefile

@@ -82 +82 @@
 
 INCLUDES = generic/include
-OPTIMIZATION = 3
+
+ifeq ($(CONFIG_OPTIMIZE_FOR_SIZE),y)
+        OPTIMIZATION = s
+else
+        OPTIMIZATION = 3
+endif
 
 DEFS = -DKERNEL -DRELEASE=$(RELEASE) "-DNAME=$(NAME)" -D__$(BITS)_BITS__ -D__$(ENDIANESS)__
@@ -91 +96 @@
         -Wall -Wextra -Wno-unused-parameter -Wmissing-prototypes \
         -Werror-implicit-function-declaration -Wwrite-strings \
-        -Werror -pipe
+        -pipe
 
 ICC_CFLAGS = -I$(INCLUDES) -O$(OPTIMIZATION) -imacros $(CONFIG_HEADER) \
         -ffreestanding -fno-builtin -nostdlib -nostdinc -Wall -Wmissing-prototypes \
-        -Werror-implicit-function-declaration -Werror -wd170
+        -Werror-implicit-function-declaration -wd170
 
 SUNCC_CFLAGS = -I$(INCLUDES) -xO$(OPTIMIZATION) \
@@ -108 +113 @@
         -pipe -arch $(CLANG_ARCH)
 
+ifeq ($(CONFIG_DEBUG),y)
+        GCC_CFLAGS += -Werror
+        ICC_CFLAGS += -Werror
+endif
+
+ifeq ($(CONFIG_LTO),y)
+        GCC_CFLAGS += -flto
+endif
+
 -include arch/$(KARCH)/Makefile.inc
 -include genarch/Makefile.inc
@@ -157 +171 @@
         DEPEND_DEFS = $(DEFS) $(CONFIG_DEFS)
 endif
+
+AFLAGS =
+LFLAGS = -N -T $(LINK) -M
 
 ## Generic kernel sources
@@ -338 +355 @@
 GENARCH_OBJECTS := $(addsuffix .o,$(basename $(GENARCH_SOURCES)))
 
+LFLAGS_LTO := $(addprefix -Xlinker ,$(LFLAGS))
+
 ifeq ($(CONFIG_SYMTAB),y)
         SYMTAB_OBJECTS := generic/src/debug/real_map.o
@@ -351 +370 @@
 
 $(RAW): $(LINK) $(ARCH_OBJECTS) $(GENARCH_OBJECTS) $(GENERIC_OBJECTS) $(SYMTAB_OBJECTS)
-        $(LD) -N $(LFLAGS) -T $(LINK) -M -Map $(MAP) -o $@ $(ARCH_OBJECTS) $(GENARCH_OBJECTS) $(GENERIC_OBJECTS) $(EXTRA_OBJECTS) $(SYMTAB_OBJECTS)
+ifeq ($(CONFIG_LTO),y)
+        $(GCC) $(LFLAGS_LTO) -Xlinker -Map -Xlinker $(MAP) $(DEFS) $(GCC_CFLAGS) -o $@ $(ARCH_OBJECTS) $(GENARCH_OBJECTS) $(GENERIC_OBJECTS) $(EXTRA_OBJECTS) $(SYMTAB_OBJECTS)
+else
+        $(LD) $(LFLAGS) -Map $(MAP) -o $@ $(ARCH_OBJECTS) $(GENARCH_OBJECTS) $(GENERIC_OBJECTS) $(EXTRA_OBJECTS) $(SYMTAB_OBJECTS)
+endif
+ifeq ($(CONFIG_STRIP_BINARIES),y)
+        $(STRIP) $(RAW)
+endif
 
 $(LINK): $(LINK).in $(DEPEND)
@@ -357 +383 @@
 
 %.o: %.S $(DEPEND)
-        $(GCC) $(DEFS) $(GCC_CFLAGS) -D__ASM__ -c $< -o $@
+        $(GCC) $(DEFS) $(GCC_CFLAGS) -D__ASM__ -c -o $@ $<
 ifeq ($(PRECHECK),y)
         $(JOBFILE) $(JOB) $< $@ as asm/preproc $(DEFS) $(GCC_CFLAGS) -D__ASM__
@@ -374 +400 @@
 
 test/fpu/%.o: test/fpu/%.c $(DEPEND)
-        $(CC) $(DEFS) $(CFLAGS) $(EXTRA_FLAGS) -c $< -o $@
+        $(CC) $(DEFS) $(CFLAGS) $(EXTRA_FLAGS) -c -o $@ $<
 ifeq ($(PRECHECK),y)
         $(JOBFILE) $(JOB) $< $@ cc test $(DEFS) $(CFLAGS) $(EXTRA_FLAGS)
@@ -384 +410 @@
 
 %.o: %.c $(DEPEND)
-        $(CC) $(DEFS) $(CFLAGS) $(EXTRA_FLAGS) $(FPU_NO_CFLAGS) -c $< -o $@
+        $(CC) $(DEFS) $(CFLAGS) $(EXTRA_FLAGS) $(FPU_NO_CFLAGS) -c -o $@ $<
 ifeq ($(PRECHECK),y)
         $(JOBFILE) $(JOB) $< $@ cc core $(DEFS) $(CFLAGS) $(EXTRA_FLAGS) $(FPU_NO_CFLAGS)
@@ -394 +420 @@
 $(REAL_MAP).bin: $(LINK) $(ARCH_OBJECTS) $(GENARCH_OBJECTS) $(GENERIC_OBJECTS)
         echo $(SYMTAB_SECTION) | $(AS) $(AFLAGS) -o $(EMPTY_MAP)
-        $(LD) -N $(LFLAGS) -T $(LINK) -M -Map $(MAP_PREV) -o $@ $(ARCH_OBJECTS) $(GENARCH_OBJECTS) $(GENERIC_OBJECTS) $(EXTRA_OBJECTS) $(EMPTY_MAP)
+ifeq ($(CONFIG_LTO),y)
+        $(GCC) $(LFLAGS_LTO) -Xlinker -Map -Xlinker $(MAP_PREV) $(DEFS) $(GCC_CFLAGS) -o $@ $(ARCH_OBJECTS) $(GENARCH_OBJECTS) $(GENERIC_OBJECTS) $(EXTRA_OBJECTS) $(EMPTY_MAP)
+else
+        $(LD) $(LFLAGS) -Map $(MAP_PREV) -o $@ $(ARCH_OBJECTS) $(GENARCH_OBJECTS) $(GENERIC_OBJECTS) $(EXTRA_OBJECTS) $(EMPTY_MAP)
+endif
         $(OBJDUMP) -t $(ARCH_OBJECTS) $(GENARCH_OBJECTS) $(GENERIC_OBJECTS) > $(DUMP)
         $(GENMAP) $(MAP_PREV) $(DUMP) $@
@@ -402 +432 @@
         
         echo $(SYMTAB_SECTION)" .incbin \"$@\"" | $(AS) $(AFLAGS) -o $(SIZEOK_MAP)
-        $(LD) -N $(LFLAGS) -T $(LINK) -M -Map $(MAP_PREV) -o $@ $(ARCH_OBJECTS) $(GENARCH_OBJECTS) $(GENERIC_OBJECTS) $(EXTRA_OBJECTS) $(SIZEOK_MAP)
+ifeq ($(CONFIG_LTO),y)
+        $(GCC) $(LFLAGS_LTO) -Xlinker -Map -Xlinker $(MAP_PREV) $(DEFS) $(GCC_CFLAGS) -o $@ $(ARCH_OBJECTS) $(GENARCH_OBJECTS) $(GENERIC_OBJECTS) $(EXTRA_OBJECTS) $(SIZEOK_MAP)
+else
+        $(LD) $(LFLAGS) -Map $(MAP_PREV) -o $@ $(ARCH_OBJECTS) $(GENARCH_OBJECTS) $(GENERIC_OBJECTS) $(EXTRA_OBJECTS) $(SIZEOK_MAP)
+endif
         $(OBJDUMP) -t $(ARCH_OBJECTS) $(GENARCH_OBJECTS) $(GENERIC_OBJECTS) > $(DUMP)
         $(GENMAP) $(MAP_PREV) $(DUMP) $@