[acpi] Expose system MAC address via ${sysmac} setting
[ipxe.git] / src / arch / i386 / Makefile
1 # Force i386-only instructions
2 #
3 CFLAGS += -march=i386
4
5 # Code size reduction.
6 #
7 CFLAGS += -fomit-frame-pointer
8
9 # Code size reduction.
10 #
11 ifeq ($(CCTYPE),gcc)
12 CFLAGS += -fstrength-reduce
13 endif
14
15 # Code size reduction. gcc3 needs a different syntax to gcc2 if you
16 # want to avoid spurious warnings.
17 #
18 ifeq ($(CCTYPE),gcc)
19 GCC_VERSION := $(subst ., ,$(shell $(CC) -dumpversion))
20 GCC_MAJOR := $(firstword $(GCC_VERSION))
21 ifeq ($(GCC_MAJOR),2)
22 CFLAGS += -malign-jumps=1 -malign-loops=1 -malign-functions=1
23 else
24 CFLAGS += -falign-jumps=1 -falign-loops=1 -falign-functions=1
25 endif # gcc2
26 endif # gcc
27
28 # Code size reduction. This is almost always a win. The kernel uses
29 # it, too.
30 #
31 ifeq ($(CCTYPE),gcc)
32 CFLAGS += -mpreferred-stack-boundary=2
33 endif
34
35 # Code size reduction. Use regparm for all functions - C functions
36 # called from assembly (or vice versa) need __asmcall now
37 #
38 CFLAGS += -mregparm=3
39
40 # Code size reduction. Use -mrtd (same __asmcall requirements as above)
41 ifeq ($(CCTYPE),gcc)
42 CFLAGS += -mrtd
43 endif
44
45 # Code size reduction. This is the logical complement to -mregparm=3.
46 # It doesn't currently buy us anything, but if anything ever tries to
47 # return small structures, let's be prepared
48 #
49 CFLAGS += -freg-struct-return
50
51 # Force 32-bit code even on an x86-64 machine
52 #
53 CFLAGS += -m32
54 ASFLAGS += --32
55 ifeq ($(HOST_OS),FreeBSD)
56 LDFLAGS += -m elf_i386_fbsd
57 else ifeq ($(HOST_OS),OpenBSD)
58 LDFLAGS += -m elf_i386_obsd
59 else
60 LDFLAGS += -m elf_i386
61 endif
62
63 # EFI requires -fshort-wchar, and nothing else currently uses wchar_t
64 #
65 CFLAGS += -fshort-wchar
66
67 # We need to undefine the default macro "i386" when compiling .S
68 # files, otherwise ".arch i386" translates to ".arch 1"...
69 #
70 CFLAGS += -Ui386
71
72 # i386-specific directories containing source files
73 #
74 SRCDIRS += arch/i386/core
75 SRCDIRS += arch/i386/tests
76
77 # Include common x86 Makefile
78 #
79 MAKEDEPS += arch/x86/Makefile
80 include arch/x86/Makefile
81
82 # Include platform-specific Makefile
83 #
84 MAKEDEPS += arch/i386/Makefile.$(PLATFORM)
85 include arch/i386/Makefile.$(PLATFORM)