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software: revert LTO changes (Disable it). 

It seems LTO is not yet fully working with all configurations, so it's better
reverting the changes for now.
- cause issues with LM32 available compilers.
- seems to cause issues with min/lite variant of VexRiscv.
- seems to cause issues with some litex-buildenv configurations. (see https://github.com/enjoy-digital/litex/issues/417).
This commit is contained in:
Florent Kermarrec 2020-03-11 12:56:40 +01:00
parent bb8905fa5d
commit 979f98ea31
2 changed files with 6 additions and 20 deletions
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2
litex/soc/software/bios/Makefile
View File

@ -29,7 +29,7 @@ bios.elf: $(BIOS_DIRECTORY)/linker.ld $(OBJECTS)
%.elf: ../libbase/crt0-$(CPU)-ctr.o ../libnet/libnet.a ../libbase/libbase-nofloat.a ../libcompiler_rt/libcompiler_rt.a
$(CC) $(LDFLAGS) -T $(BIOS_DIRECTORY)/linker.ld -N -o $@ \
$(LD) $(LDFLAGS) -T $(BIOS_DIRECTORY)/linker.ld -N -o $@ \
../libbase/crt0-$(CPU)-ctr.o \
$(OBJECTS) \
-L../libnet \

20
litex/soc/software/common.mak
View File

@ -7,24 +7,14 @@ endif
RM ?= rm -f
PYTHON ?= python3
ifeq ($(CPU), lm32)
LTO = 0
else
LTO = 1
endif
ifeq ($(CLANG), 1)
ifeq ($(CLANG),1)
CC_normal := clang -target $(TRIPLE) -integrated-as
CX_normal := clang++ -target $(TRIPLE) -integrated-as
else
CC_normal := $(TARGET_PREFIX)gcc -std=gnu99
CX_normal := $(TARGET_PREFIX)g++
endif
ifeq ($(LTO), 1)
AR_normal := $(TARGET_PREFIX)gcc-ar
else
AR_normal := $(TARGET_PREFIX)ar
endif
LD_normal := $(TARGET_PREFIX)ld
OBJCOPY_normal := $(TARGET_PREFIX)objcopy
@ -34,7 +24,7 @@ AR_quiet = @echo " AR " $@ && $(AR_normal)
LD_quiet = @echo " LD " $@ && $(LD_normal)
OBJCOPY_quiet = @echo " OBJCOPY " $@ && $(OBJCOPY_normal)
ifeq ($(V), 1)
ifeq ($(V),1)
CC = $(CC_normal)
CX = $(CX_normal)
AR = $(AR_normal)
@ -57,13 +47,9 @@ DEPFLAGS += -MD -MP
#
INCLUDES = -I$(SOC_DIRECTORY)/software/include/base -I$(SOC_DIRECTORY)/software/include -I$(SOC_DIRECTORY)/common -I$(BUILDINC_DIRECTORY)
COMMONFLAGS = $(DEPFLAGS) -Os $(CPUFLAGS) -g3 -fomit-frame-pointer -Wall -fno-builtin -nostdinc $(INCLUDES)
COMMONFLAGS += -ffunction-sections -fdata-sections -nostartfiles -nostdlib -nodefaultlibs
ifeq ($(LTO), 1)
COMMONFLAGS += -flto -fuse-linker-plugin
endif
CFLAGS = $(COMMONFLAGS) -fexceptions -Wstrict-prototypes -Wold-style-definition -Wmissing-prototypes
CXXFLAGS = $(COMMONFLAGS) -std=c++11 -I$(SOC_DIRECTORY)/software/include/basec++ -fexceptions -fno-rtti -ffreestanding
LDFLAGS = -nostdlib -nodefaultlibs -Os $(CPUFLAGS) -L$(BUILDINC_DIRECTORY)
LDFLAGS = -nostdlib -nodefaultlibs -L$(BUILDINC_DIRECTORY)
define compilexx
$(CX) -c $(CXXFLAGS) $(1) $< -o $@