X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;ds=sidebyside;f=Makefile.flags;h=9525889c66b47ca717701d6b9a0c8cafad3fad61;hb=bd23fbbd0a0491e00bac89fc30f31972525d95bb;hp=243f095e2eadf74805dbef06e1d8bc96ad5fc3cc;hpb=8d82cf72c99a8ab8bdbb0b179a1f1135a004c47a;p=oweals%2Fbusybox.git

diff --git a/Makefile.flags b/Makefile.flags
index 243f095e2..9525889c6 100644
--- a/Makefile.flags
+++ b/Makefile.flags
@@ -11,36 +11,30 @@ CPPFLAGS += $(call cc-option,-std=gnu99,)
 
 CPPFLAGS += \
 	-Iinclude -Ilibbb \
-	$(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) -I$(srctree)/libbb \
+	$(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
 
-# flag checks are grouped together to speed the checks up a bit..
-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.
+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,)
-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 += $(call cc-option,-Os -fno-builtin-strlen -finline-limit=0 -fomit-frame-pointer -ffunction-sections -fdata-sections,)
 # -fno-guess-branch-probability: prohibit pseudo-random guessing
 # of branch probabilities (hopefully makes bloatcheck more stable):
@@ -56,10 +50,13 @@ ifeq ($(CONFIG_DEBUG),y)
 CFLAGS += $(call cc-option,-g)
 endif
 
+ifeq ($(CONFIG_BUILD_LIBBUSYBOX),y)
 # on i386: 14% smaller libbusybox.so
 # (code itself is 9% bigger, we save on relocs/PLT/GOT)
-ifeq ($(CONFIG_BUILD_LIBBUSYBOX),y)
 CFLAGS += -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)
@@ -94,4 +91,5 @@ 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
+# Reduced from 20k to 16k in 1.9.0.
+FLTFLAGS += -s 16000