| # Code size reduction. |
| # |
| CFLAGS += -fstrength-reduce -fomit-frame-pointer |
| |
| # Code size reduction. gcc3 needs a different syntax to gcc2 if you |
| # want to avoid spurious warnings. |
| # |
| CFLAGS += -falign-jumps=1 -falign-loops=1 -falign-functions=1 |
| |
| # Use %rip-relative addressing wherever possible. |
| # |
| CFLAGS += -fpie |
| |
| # Force 64-bit code |
| # |
| CFLAGS += -m64 |
| ASFLAGS += --64 |
| LDFLAGS += -m elf_x86_64 |
| |
| # EFI requires -fshort-wchar, and nothing else currently uses wchar_t |
| # |
| CFLAGS += -fshort-wchar |
| |
| # We need to undefine the default macro "i386" when compiling .S |
| # files, otherwise ".arch i386" translates to ".arch 1"... |
| # |
| CFLAGS += -Ui386 |
| |
| # x86_64-specific directories containing source files |
| # |
| SRCDIRS += arch/x86_64/prefix |
| |
| # Include common x86 Makefile |
| # |
| MAKEDEPS += arch/x86/Makefile |
| include arch/x86/Makefile |
| |
| # Include platform-specific Makefile |
| # |
| MAKEDEPS += arch/x86_64/Makefile.$(PLATFORM) |
| include arch/x86_64/Makefile.$(PLATFORM) |
