Annotation of /tags/mkinitrd-6_1_9/busybox/Makefile.flags
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Revision 816 -
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Fri Apr 24 18:33:46 2009 UTC (15 years, 5 months ago) by niro
Original Path: trunk/mkinitrd-magellan/busybox/Makefile.flags
File size: 3774 byte(s)
Fri Apr 24 18:33:46 2009 UTC (15 years, 5 months ago) by niro
Original Path: trunk/mkinitrd-magellan/busybox/Makefile.flags
File size: 3774 byte(s)
-updated to busybox-1.13.4
1 | niro | 532 | # ========================================================================== |
2 | # Build system | ||
3 | # ========================================================================== | ||
4 | |||
5 | BB_VER = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION) | ||
6 | niro | 816 | export BB_VER |
7 | SKIP_STRIP = n | ||
8 | niro | 532 | |
9 | # -std=gnu99 needed for [U]LLONG_MAX on some systems | ||
10 | niro | 816 | CPPFLAGS += $(call cc-option,-std=gnu99,) |
11 | niro | 532 | |
12 | CPPFLAGS += \ | ||
13 | -Iinclude -Ilibbb \ | ||
14 | niro | 816 | $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include -I$(srctree)/libbb) \ |
15 | niro | 532 | -include include/autoconf.h \ |
16 | -D_GNU_SOURCE -DNDEBUG \ | ||
17 | $(if $(CONFIG_LFS),-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64) \ | ||
18 | -D"BB_VER=KBUILD_STR($(BB_VER))" -DBB_BT=AUTOCONF_TIMESTAMP | ||
19 | |||
20 | niro | 816 | CFLAGS += $(call cc-option,-Wall,) |
21 | CFLAGS += $(call cc-option,-Wshadow,) | ||
22 | CFLAGS += $(call cc-option,-Wwrite-strings,) | ||
23 | CFLAGS += $(call cc-option,-Wundef,) | ||
24 | CFLAGS += $(call cc-option,-Wstrict-prototypes,) | ||
25 | CFLAGS += $(call cc-option,-Wunused -Wunused-parameter,) | ||
26 | CFLAGS += $(call cc-option,-Wmissing-prototypes -Wmissing-declarations,) | ||
27 | # warn about C99 declaration after statement | ||
28 | CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) | ||
29 | # If you want to add more -Wsomething above, make sure that it is | ||
30 | # still possible to build bbox without warnings. | ||
31 | niro | 532 | |
32 | niro | 816 | ifeq ($(CONFIG_WERROR),y) |
33 | CFLAGS += $(call cc-option,-Werror,) | ||
34 | niro | 532 | endif |
35 | niro | 816 | # gcc 3.x emits bogus "old style proto" warning on find.c:alloc_action() |
36 | CFLAGS += $(call cc-ifversion, -ge, 0400, -Wold-style-definition) | ||
37 | niro | 532 | |
38 | niro | 816 | CFLAGS += $(call cc-option,-fno-builtin-strlen -finline-limit=0 -fomit-frame-pointer -ffunction-sections -fdata-sections,) |
39 | # -fno-guess-branch-probability: prohibit pseudo-random guessing | ||
40 | # of branch probabilities (hopefully makes bloatcheck more stable): | ||
41 | CFLAGS += $(call cc-option,-fno-guess-branch-probability,) | ||
42 | CFLAGS += $(call cc-option,-funsigned-char -static-libgcc,) | ||
43 | CFLAGS += $(call cc-option,-falign-functions=1 -falign-jumps=1 -falign-labels=1 -falign-loops=1,) | ||
44 | |||
45 | # FIXME: These warnings are at least partially to be concerned about and should | ||
46 | # be fixed.. | ||
47 | #CFLAGS += $(call cc-option,-Wconversion,) | ||
48 | |||
49 | ifneq ($(CONFIG_DEBUG),y) | ||
50 | CFLAGS += $(call cc-option,-Os,) | ||
51 | else | ||
52 | CFLAGS += $(call cc-option,-g,) | ||
53 | #CFLAGS += "-D_FORTIFY_SOURCE=2" | ||
54 | ifeq ($(CONFIG_DEBUG_PESSIMIZE),y) | ||
55 | CFLAGS += $(call cc-option,-O0,) | ||
56 | else | ||
57 | CFLAGS += $(call cc-option,-Os,) | ||
58 | endif | ||
59 | endif | ||
60 | |||
61 | # If arch/$(ARCH)/Makefile did not override it (with, say, -fPIC)... | ||
62 | ARCH_FPIC ?= -fpic | ||
63 | ARCH_FPIE ?= -fpie | ||
64 | ARCH_PIE ?= -pie | ||
65 | |||
66 | ifeq ($(CONFIG_BUILD_LIBBUSYBOX),y) | ||
67 | # on i386: 14% smaller libbusybox.so | ||
68 | # (code itself is 9% bigger, we save on relocs/PLT/GOT) | ||
69 | CFLAGS += $(ARCH_FPIC) | ||
70 | # and another 4% reduction of libbusybox.so: | ||
71 | # (external entry points must be marked EXTERNALLY_VISIBLE) | ||
72 | CFLAGS += $(call cc-option,-fvisibility=hidden) | ||
73 | endif | ||
74 | |||
75 | niro | 532 | ifeq ($(CONFIG_STATIC),y) |
76 | niro | 816 | CFLAGS_busybox += -static |
77 | niro | 532 | endif |
78 | niro | 816 | |
79 | ifeq ($(CONFIG_PIE),y) | ||
80 | CFLAGS_busybox += $(ARCH_PIE) | ||
81 | CFLAGS += $(ARCH_FPIE) | ||
82 | endif | ||
83 | |||
84 | LDLIBS += m crypt | ||
85 | |||
86 | ifeq ($(CONFIG_PAM),y) | ||
87 | LDLIBS += pam pam_misc | ||
88 | endif | ||
89 | |||
90 | ifeq ($(CONFIG_SELINUX),y) | ||
91 | LDLIBS += selinux sepol | ||
92 | endif | ||
93 | |||
94 | ifeq ($(CONFIG_EFENCE),y) | ||
95 | LDLIBS += efence | ||
96 | endif | ||
97 | |||
98 | ifeq ($(CONFIG_DMALLOC),y) | ||
99 | LDLIBS += dmalloc | ||
100 | endif | ||
101 | |||
102 | # If a flat binary should be built, CFLAGS_busybox="-Wl,-elf2flt" | ||
103 | # env var should be set for make invocation. | ||
104 | # Here we check whether CFLAGS_busybox indeed contains that flag. | ||
105 | # (For historical reasons, we also check LDFLAGS, which doesn't | ||
106 | # seem to be entirely correct variable to put "-Wl,-elf2flt" into). | ||
107 | W_ELF2FLT = -Wl,-elf2flt | ||
108 | ifneq (,$(findstring $(W_ELF2FLT),$(LDFLAGS) $(CFLAGS_busybox))) | ||
109 | SKIP_STRIP = y | ||
110 | endif | ||
111 | |||
112 | # Busybox is a stack-fatty so make sure we increase default size | ||
113 | # TODO: use "make stksizes" to find & fix big stack users | ||
114 | # (we stole scripts/checkstack.pl from the kernel... thanks guys!) | ||
115 | # Reduced from 20k to 16k in 1.9.0. | ||
116 | FLTFLAGS += -s 16000 |