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xv6-cs450
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Add -fno-omit-frame-pointer to compile flags. 

At some point between gcc 4.4 and 4.6, omitting the frame pointer
became default if any -O is specified.  getcallerpcs relies on the
frame pointer, so bring it back.
This commit is contained in:
Austin Clements 2011-06-24 14:20:51 -04:00
parent 96b7da5f03
commit 97657d703f
1 changed files with 1 additions and 1 deletions
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2
Makefile
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@ -71,7 +71,7 @@ AS = $(TOOLPREFIX)gas
LD = $(TOOLPREFIX)ld
OBJCOPY = $(TOOLPREFIX)objcopy
OBJDUMP = $(TOOLPREFIX)objdump
CFLAGS = -fno-pic -static -fno-builtin -fno-strict-aliasing -O2 -Wall -MD -ggdb -m32 -Werror
CFLAGS = -fno-pic -static -fno-builtin -fno-strict-aliasing -O2 -Wall -MD -ggdb -m32 -Werror -fno-omit-frame-pointer
CFLAGS += $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 && echo -fno-stack-protector)
ASFLAGS = -m32 -gdwarf-2
# FreeBSD ld wants ``elf_i386_fbsd''