diff options
| -rw-r--r-- | Config.in | 22 | ||||
| -rw-r--r-- | Rules.mak | 22 |
2 files changed, 31 insertions, 13 deletions
@@ -288,17 +288,27 @@ endmenu menu 'Debugging Options' config CONFIG_DEBUG - bool "Build BusyBox with Debugging symbols" + bool "Build BusyBox with extra Debugging symbols" default n help - Say Y here if you wish to compile BusyBox with debugging symbols. - This will allow you to use a debugger to examine BusyBox internals - while applets are running. This increases the size of the binary - considerably and should only be used when doing development. - If you are doing development and want to debug BusyBox, answer Y. + Say Y here if you wish to examine BusyBox internals while applets are + running. This increases the size of the binary considerably, and + should only be used when doing development. If you are doing + development and want to debug BusyBox, answer Y. Most people should answer N. +config CONFIG_DEBUG_PESSIMIZE + bool "Disable compiler optimizations." + default n + depends on CONFIG_DEBUG + help + The compiler's optimization of source code can eliminate and reorder + code, resulting in an executable that's hard to understand when + stepping through it with a debugger. This switches it off, resulting + in a much bigger executable that more closely matches the source + code. + choice prompt "Additional debugging library" default CONFIG_NO_DEBUG_LIB @@ -75,13 +75,14 @@ CFLAGS_EXTRA=$(subst ",, $(strip $(EXTRA_CFLAGS_OPTIONS))) # This must bind late because srcdir is reset for every source subdirectory. INCS:=-I$(top_builddir)/include -I$(top_srcdir)/include -CFLAGS=$(INCS) -I$(srcdir) +CFLAGS=$(INCS) -I$(srcdir) -D_GNU_SOURCE CFLAGS+=$(CHECKED_CFLAGS) ARFLAGS=cru # Warnings -CFLAGS+=-Wall -Wstrict-prototypes -Wshadow +CFLAGS += -Wall -Wstrict-prototypes -Wshadow +LDFLAGS += $(call check_ld,--warn-common,) # gcc centric. Perhaps fiddle with findstring gcc,$(CC) for the rest # get the CC MAJOR/MINOR version @@ -183,7 +184,7 @@ ifeq ($(strip $(shell [ $(CC_MAJOR) -ge 4 -a $(CC_MINOR) -ge 1 ] ; echo $$?)),0) OPTIMIZATION+=$(call check_gcc,-fno-branch-count-reg,) endif # gcc-4.1 and beyond endif -OPTIMIZATIONS:=$(OPTIMIZATION) $(call check_gcc,-fomit-frame-pointer,) +OPTIMIZATION+=$(call check_gcc,-fomit-frame-pointer,) # #-------------------------------------------------------- @@ -207,14 +208,21 @@ else LIBRARIES:=-lefence endif endif + +# Debugging info + ifeq ($(strip $(CONFIG_DEBUG)),y) - CFLAGS +=-g -D_GNU_SOURCE - LDFLAGS += $(call check_ld,--warn-common,) + CFLAGS +=-g else - CFLAGS+=$(OPTIMIZATIONS) -D_GNU_SOURCE -DNDEBUG - LDFLAGS += $(call check_ld,--warn-common,) + CFLAGS +=-DNDEBUG LDFLAGS += $(call check_ld,--sort-common,) endif + +ifneq ($(strip $(CONFIG_DEBUG_PESSIMIZE)),y) +else + CFLAGS += $(OPTIMIZATION) +endif + # warn a bit more verbosely for non-release versions ifneq ($(EXTRAVERSION),) CHECKED_CFLAGS+=$(call check_gcc,-Wstrict-prototypes,) |