CFLAGS += $(call cc-option,-Wundef,)
CFLAGS += $(call cc-option,-Wstrict-prototypes,)
CFLAGS += $(call cc-option,-Wunused -Wunused-parameter,)
+CFLAGS += $(call cc-option,-Wunused-function -Wunused-value,)
CFLAGS += $(call cc-option,-Wmissing-prototypes -Wmissing-declarations,)
# warn about C99 declaration after statement
CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
# 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,-Os -fno-builtin-strlen -finline-limit=0 -fomit-frame-pointer -ffunction-sections -fdata-sections,)
+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 += $(call cc-option,-fno-guess-branch-probability,)
# FIXME: These warnings are at least partially to be concerned about and should
# be fixed..
-#CFLAGS+=$(call cc-option,-Wconversion,)
-
-ifeq ($(CONFIG_DEBUG),y)
-CFLAGS += $(call cc-option,-g)
+#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)...
ifeq ($(CONFIG_PIE),y)
CFLAGS_busybox += $(ARCH_PIE)
CFLAGS += $(ARCH_FPIE)
-# No switch() jump tables. Code growth +1k, binary size down -12k
-# due to reduced number of code pointers.
-# (TODO: make overridable: some arches may want to not do this)
-CFLAGS += $(call cc-option,-fno-jump-tables)
+endif
+
+ifneq ($(CONFIG_EXTRA_CFLAGS),)
+CFLAGS += $(strip $(subst ",,$(CONFIG_EXTRA_CFLAGS)))
+#"))
endif
LDLIBS += m crypt
LDLIBS += dmalloc
endif
-LDFLAGS_ELF2FLT = -Wl,-elf2flt
-ifneq (,$(findstring $(LDFLAGS_ELF2FLT),$(LDFLAGS)))
+# If a flat binary should be built, CFLAGS_busybox="-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 "-elf2flt" into).
+W_ELF2FLT = -elf2flt
+ifneq (,$(findstring $(W_ELF2FLT),$(LDFLAGS) $(CFLAGS_busybox)))
SKIP_STRIP = y
endif