# ==========================================================================
-# Building
+# Build system
# ==========================================================================
BB_VER = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
-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 \
- -Wall -Wstrict-prototypes -Wshadow -Werror \
+ -Wall -Wstrict-prototypes -Wshadow -Werror -Wundef \
-funsigned-char -fno-builtin-strlen -finline-limit=0 -static-libgcc \
- -Os -march=i386 -mpreferred-stack-boundary=2 \
- -falign-functions=1 -falign-jumps=1 -falign-loops=1 \
- -fomit-frame-pointer -ffunction-sections -fdata-sections \
- -funsigned-char -fno-builtin-strlen \
+ -Os -falign-functions=1 -falign-jumps=1 -falign-loops=1 \
+ -fomit-frame-pointer -ffunction-sections -fdata-sections