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https://github.com/projectacrn/acrn-hypervisor.git
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557e7f19f7
Add the below flags, they are needed in -O2:
-fno-delete-null-pointer-checks:
* tells the compiler NOT to assume that null pointer deference does
not exist.
* Without this flag, below case cannot be detected:
a pointer might point to nullsometime during run-time and if there
is no validation for that pointer, it will cause the program to crash.
Since we don’t receive an error message saying that a pointer is
pointing to null, we will have a hard time trying to find the problem.
-fwrapv:
* tells the compiler that signed overflow always wraps.
* Without this flag, x + 10 > x will always be true for signed x.
With the flag, x + 10 > x is not always be true, as the overflow is
defined for x, and it could wrap.
Tracked-On: #4194
Signed-off-by: Conghui Chen <conghui.chen@intel.com>
Reviewed-by: Yonghua Huang <yonghua.huang@intel.com>
54 lines
1.6 KiB
Makefile
54 lines
1.6 KiB
Makefile
T := $(CURDIR)
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OUT_DIR ?= $(shell mkdir -p $(T)/build;cd $(T)/build;pwd)
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CC ?= gcc
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LIFEMNGR_CFLAGS := -g -std=gnu11
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LIFEMNGR_CFLAGS += -D_GNU_SOURCE
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LIFEMNGR_CFLAGS += -DNO_OPENSSL
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LIFEMNGR_CFLAGS += -m64
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LIFEMNGR_CFLAGS += -Wall -ffunction-sections
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LIFEMNGR_CFLAGS += -Werror
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LIFEMNGR_CFLAGS += -O2 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
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LIFEMNGR_CFLAGS += -Wformat -Wformat-security -fno-strict-aliasing
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LIFEMNGR_CFLAGS += -fno-delete-null-pointer-checks -fwrapv
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LIFEMNGR_CFLAGS += -fpie -fpic
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LIFEMNGR_CFLAGS += $(CFLAGS)
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GCC_MAJOR=$(shell echo __GNUC__ | $(CC) -E -x c - | tail -n 1)
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GCC_MINOR=$(shell echo __GNUC_MINOR__ | $(CC) -E -x c - | tail -n 1)
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#enable stack overflow check
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STACK_PROTECTOR := 1
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ifdef STACK_PROTECTOR
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ifeq (true, $(shell [ $(GCC_MAJOR) -gt 4 ] && echo true))
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LIFEMNGR_CFLAGS += -fstack-protector-strong
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else
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ifeq (true, $(shell [ $(GCC_MAJOR) -eq 4 ] && [ $(GCC_MINOR) -ge 9 ] && echo true))
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LIFEMNGR_CFLAGS += -fstack-protector-strong
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else
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LIFEMNGR_CFLAGS += -fstack-protector
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endif
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endif
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endif
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LIFEMNGR_LDFLAGS := -Wl,-z,noexecstack
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LIFEMNGR_LDFLAGS += -Wl,-z,relro,-z,now
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LIFEMNGR_LDFLAGS += -pie
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LIFEMNGR_LDFLAGS += $(LDFLAGS)
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all:
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$(CC) -g life_mngr.c -o $(OUT_DIR)/life_mngr -lpthread $(LIFEMNGR_CFLAGS) $(LIFEMNGR_LDFLAGS)
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cp life_mngr.service $(OUT_DIR)/life_mngr.service
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-x86_64-w64-mingw32-gcc -g life_mngr_win.c -o $(OUT_DIR)/life_mngr_win.exe -Wall -O2 $(LDFLAGS)
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cp COPYING.MinGW-w64-runtime.txt $(OUT_DIR)/COPYING.MinGW-w64-runtime.txt
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clean:
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rm -f $(OUT_DIR)/life_mngr
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ifneq ($(OUT_DIR),.)
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rm -f $(OUT_DIR)/life_mngr.service
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rm -rf $(OUT_DIR)
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endif
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