Firmware/opensbi
8
0
Fork 0
forked from Mirrors/opensbi
Code Pull Requests Activity

Makefile: Add flag for reprodubility compiler flags

Browse Source 
Provides mechanism to remove absolute paths from binaries using
-ffile-prefix-map

It will help distros (e.g. yocto based ones ) which want to ship
the .elf files but need to scrub absolute paths in objects

Reviewed-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Link: https://lore.kernel.org/r/20250515025931.3383142-1-raj.khem@gmail.com
Signed-off-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Khem Raj
2025-05-14 19:59:31 -07:00
committed by Anup Patel
parent 66ab965e54
commit 6d23a9c570
1 changed files with 7 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
Makefile
View File

@@ -180,6 +180,11 @@ else
USE_LD_FLAG = -fuse-ld=bfd USE_LD_FLAG = -fuse-ld=bfd
endif endif
REPRODUCIBLE ?= n
ifeq ($(REPRODUCIBLE),y)
REPRODUCIBLE_FLAGS += -ffile-prefix-map=$(src_dir)=
endif
# Check whether the linker supports creating PIEs # Check whether the linker supports creating PIEs
OPENSBI_LD_PIE := $(shell $(CC) $(CLANG_TARGET) $(RELAX_FLAG) $(USE_LD_FLAG) -fPIE -nostdlib -Wl,-pie -x c /dev/null -o /dev/null >/dev/null 2>&1 && echo y || echo n) OPENSBI_LD_PIE := $(shell $(CC) $(CLANG_TARGET) $(RELAX_FLAG) $(USE_LD_FLAG) -fPIE -nostdlib -Wl,-pie -x c /dev/null -o /dev/null >/dev/null 2>&1 && echo y || echo n)
@@ -369,6 +374,7 @@ GENFLAGS += $(firmware-genflags-y)
CFLAGS = -g -Wall -Werror -ffreestanding -nostdlib -fno-stack-protector -fno-strict-aliasing -ffunction-sections -fdata-sections CFLAGS = -g -Wall -Werror -ffreestanding -nostdlib -fno-stack-protector -fno-strict-aliasing -ffunction-sections -fdata-sections
CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls
CFLAGS += -fno-asynchronous-unwind-tables -fno-unwind-tables CFLAGS += -fno-asynchronous-unwind-tables -fno-unwind-tables
CFLAGS += $(REPRODUCIBLE_FLAGS)
# Optionally supported flags # Optionally supported flags
ifeq ($(CC_SUPPORT_VECTOR),y) ifeq ($(CC_SUPPORT_VECTOR),y)
CFLAGS += -DOPENSBI_CC_SUPPORT_VECTOR CFLAGS += -DOPENSBI_CC_SUPPORT_VECTOR
@@ -394,6 +400,7 @@ CPPFLAGS += $(firmware-cppflags-y)
ASFLAGS = -g -Wall -nostdlib ASFLAGS = -g -Wall -nostdlib
ASFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls ASFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls
ASFLAGS += -fPIE ASFLAGS += -fPIE
ASFLAGS += $(REPRODUCIBLE_FLAGS)
# Optionally supported flags # Optionally supported flags
ifeq ($(CC_SUPPORT_SAVE_RESTORE),y) ifeq ($(CC_SUPPORT_SAVE_RESTORE),y)
ASFLAGS += -mno-save-restore ASFLAGS += -mno-save-restore