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# ==========================================================================
# Build system
# ==========================================================================
BB_VER = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
# -std=gnu99 needed for [U]LLONG_MAX on some systems
CPPFLAGS += \
-std=gnu99 \
-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 += \
-Wall -Wstrict-prototypes -Wshadow -Werror -Wundef \
-funsigned-char -fno-builtin-strlen -finline-limit=0 -static-libgcc \
-Os -falign-functions=1 -falign-jumps=1 -falign-loops=1 \
-fomit-frame-pointer -ffunction-sections -fdata-sections
ifeq ($(CONFIG_DEBUG),y)
CFLAGS += -g
LDFLAGS += -g
endif
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