mirror of
https://github.com/sheumann/hush.git
synced 2024-06-06 02:29:31 +00:00
f6107c7e88
This helps with remembering additional flags like e.g. cpu settings for people who did not configured their compiler to produce code for their cpu per default.
122 lines
3.8 KiB
Makefile
122 lines
3.8 KiB
Makefile
# ==========================================================================
|
|
# Build system
|
|
# ==========================================================================
|
|
|
|
BB_VER = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
|
|
export BB_VER
|
|
SKIP_STRIP = n
|
|
|
|
# -std=gnu99 needed for [U]LLONG_MAX on some systems
|
|
CPPFLAGS += $(call cc-option,-std=gnu99,)
|
|
|
|
CPPFLAGS += \
|
|
-Iinclude -Ilibbb \
|
|
$(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include -I$(srctree)/libbb) \
|
|
-include include/autoconf.h \
|
|
-D_GNU_SOURCE -DNDEBUG \
|
|
$(if $(CONFIG_LFS),-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64) \
|
|
-D"BB_VER=KBUILD_STR($(BB_VER))" -DBB_BT=AUTOCONF_TIMESTAMP
|
|
|
|
CFLAGS += $(call cc-option,-Wall,)
|
|
CFLAGS += $(call cc-option,-Wshadow,)
|
|
CFLAGS += $(call cc-option,-Wwrite-strings,)
|
|
CFLAGS += $(call cc-option,-Wundef,)
|
|
CFLAGS += $(call cc-option,-Wstrict-prototypes,)
|
|
CFLAGS += $(call cc-option,-Wunused -Wunused-parameter,)
|
|
CFLAGS += $(call cc-option,-Wmissing-prototypes -Wmissing-declarations,)
|
|
# warn about C99 declaration after statement
|
|
CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
|
|
# If you want to add more -Wsomething above, make sure that it is
|
|
# still possible to build bbox without warnings.
|
|
|
|
ifeq ($(CONFIG_WERROR),y)
|
|
CFLAGS += $(call cc-option,-Werror,)
|
|
endif
|
|
# gcc 3.x emits bogus "old style proto" warning on find.c:alloc_action()
|
|
CFLAGS += $(call cc-ifversion, -ge, 0400, -Wold-style-definition)
|
|
|
|
CFLAGS += $(call cc-option,-fno-builtin-strlen -finline-limit=0 -fomit-frame-pointer -ffunction-sections -fdata-sections,)
|
|
# -fno-guess-branch-probability: prohibit pseudo-random guessing
|
|
# of branch probabilities (hopefully makes bloatcheck more stable):
|
|
CFLAGS += $(call cc-option,-fno-guess-branch-probability,)
|
|
CFLAGS += $(call cc-option,-funsigned-char -static-libgcc,)
|
|
CFLAGS += $(call cc-option,-falign-functions=1 -falign-jumps=1 -falign-labels=1 -falign-loops=1,)
|
|
|
|
# FIXME: These warnings are at least partially to be concerned about and should
|
|
# be fixed..
|
|
#CFLAGS += $(call cc-option,-Wconversion,)
|
|
|
|
ifneq ($(CONFIG_DEBUG),y)
|
|
CFLAGS += $(call cc-option,-Os,)
|
|
else
|
|
CFLAGS += $(call cc-option,-g,)
|
|
#CFLAGS += "-D_FORTIFY_SOURCE=2"
|
|
ifeq ($(CONFIG_DEBUG_PESSIMIZE),y)
|
|
CFLAGS += $(call cc-option,-O0,)
|
|
else
|
|
CFLAGS += $(call cc-option,-Os,)
|
|
endif
|
|
endif
|
|
|
|
# If arch/$(ARCH)/Makefile did not override it (with, say, -fPIC)...
|
|
ARCH_FPIC ?= -fpic
|
|
ARCH_FPIE ?= -fpie
|
|
ARCH_PIE ?= -pie
|
|
|
|
ifeq ($(CONFIG_BUILD_LIBBUSYBOX),y)
|
|
# on i386: 14% smaller libbusybox.so
|
|
# (code itself is 9% bigger, we save on relocs/PLT/GOT)
|
|
CFLAGS += $(ARCH_FPIC)
|
|
# and another 4% reduction of libbusybox.so:
|
|
# (external entry points must be marked EXTERNALLY_VISIBLE)
|
|
CFLAGS += $(call cc-option,-fvisibility=hidden)
|
|
endif
|
|
|
|
ifeq ($(CONFIG_STATIC),y)
|
|
CFLAGS_busybox += -static
|
|
endif
|
|
|
|
ifeq ($(CONFIG_PIE),y)
|
|
CFLAGS_busybox += $(ARCH_PIE)
|
|
CFLAGS += $(ARCH_FPIE)
|
|
endif
|
|
|
|
ifneq ($(CONFIG_EXTRA_CFLAGS),)
|
|
CFLAGS += $(strip $(subst ",,$(CONFIG_EXTRA_CFLAGS)))
|
|
#"))
|
|
endif
|
|
|
|
LDLIBS += m crypt
|
|
|
|
ifeq ($(CONFIG_PAM),y)
|
|
LDLIBS += pam pam_misc
|
|
endif
|
|
|
|
ifeq ($(CONFIG_SELINUX),y)
|
|
LDLIBS += selinux sepol
|
|
endif
|
|
|
|
ifeq ($(CONFIG_EFENCE),y)
|
|
LDLIBS += efence
|
|
endif
|
|
|
|
ifeq ($(CONFIG_DMALLOC),y)
|
|
LDLIBS += dmalloc
|
|
endif
|
|
|
|
# If a flat binary should be built, CFLAGS_busybox="-Wl,-elf2flt"
|
|
# env var should be set for make invocation.
|
|
# Here we check whether CFLAGS_busybox indeed contains that flag.
|
|
# (For historical reasons, we also check LDFLAGS, which doesn't
|
|
# seem to be entirely correct variable to put "-Wl,-elf2flt" into).
|
|
W_ELF2FLT = -Wl,-elf2flt
|
|
ifneq (,$(findstring $(W_ELF2FLT),$(LDFLAGS) $(CFLAGS_busybox)))
|
|
SKIP_STRIP = y
|
|
endif
|
|
|
|
# Busybox is a stack-fatty so make sure we increase default size
|
|
# TODO: use "make stksizes" to find & fix big stack users
|
|
# (we stole scripts/checkstack.pl from the kernel... thanks guys!)
|
|
# Reduced from 20k to 16k in 1.9.0.
|
|
FLTFLAGS += -s 16000
|