cp: make "cp file /dev/node" special case; explained in comments

[oweals/busybox.git] / Makefile.flags

diff --git a/Makefile.flags b/Makefile.flags
index cec73df8ff2e5ad50dd915e784fd21576abbe62f..c64a5c8389402ca63ced398f6b9ebdd0779aa27c 100644 (file)
--- a/Makefile.flags
+++ b/Makefile.flags
@@ -3,10 +3,11 @@
 # ==========================================================================
 
 BB_VER = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
+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$(srctree)/libbb \
@@ -16,15 +17,34 @@ CPPFLAGS += \
        -D"BB_VER=KBUILD_STR($(BB_VER))" -DBB_BT=AUTOCONF_TIMESTAMP
 
 # flag checks are grouped together to speed the checks up a bit..
-CFLAGS += $(call cc-option,-Wall -Wshadow,)
+CFLAGS += $(call cc-option,-Wall -Wshadow -Wwrite-strings,)
+CFLAGS += $(call cc-option,-Wundef -Wstrict-prototypes,)
+# If you want to add "-Wmissing-prototypes -Wmissing-declarations" above
+# (or anything else for that matter) make sure that it is still possible
+# to build bbox without warnings. Current offender: find.c:alloc_action().
+# Looks more like gcc bug: gcc will warn on it with or without prototype.
+# But still, warning-free compile is a must, or else we will drown
+# in warnings pretty soon.
+
 ifeq ($(CONFIG_WERROR),y)
 CFLAGS += $(call cc-option,-Werror,)
+else
+# for development, warn a little bit about unused results..
+CPPFLAGS += -D_FORTIFY_SOURCE=2
+endif
+# gcc 3.x emits bogus "old style proto" warning on find.c:alloc_action()
+CFLAGS += $(call cc-ifversion, -ge, 0400, -Wold-style-definition)
+
+# gcc emits bogus "no prev proto" warning on find.c:alloc_action()
+ifneq ($(CONFIG_WERROR),y)
+CFLAGS += $(call cc-option,-Wmissing-prototypes -Wmissing-declarations,)
 endif
-CFLAGS += $(call cc-option,-Wundef -Wold-style-definition -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations,)
+
 CFLAGS += $(call cc-option,-Os -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,-funsigned-char -fno-guess-branch-probability -static-libgcc,)
+# 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
@@ -38,4 +58,36 @@ endif
 ifeq ($(CONFIG_STATIC),y)
 LDFLAGS += -static
 endif
+
+BBOX_LIB_LIST = m crypt
+
+ifeq ($(CONFIG_PAM),y)
+BBOX_LIB_LIST += pam pam_misc
+endif
+
+ifeq ($(CONFIG_SELINUX),y)
+BBOX_LIB_LIST += selinux sepol
+endif
+
+ifeq ($(CONFIG_EFENCE),y)
+BBOX_LIB_LIST += efence
+endif
+
+ifeq ($(CONFIG_DMALLOC),y)
+BBOX_LIB_LIST += dmalloc
+endif
+
+# For scripts/trylink
+export BBOX_LIB_LIST
+
 #LDFLAGS += -nostdlib
+
+LDFLAGS_ELF2FLT = -Wl,-elf2flt
+ifneq (,$(findstring $(LDFLAGS_ELF2FLT),$(LDFLAGS)))
+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!)
+FLTFLAGS += -s 20000