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Kbuild: Removes the SECTION_GARBAGE_COLLECTION ksymbol.

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This commit removes from the Kconfig system the
SECTION_GARBAGE_COLLECTION kconfig symbols and sets the
SECTION_GC_FLAG flag permanently on the compilation options.

Change-Id: Iec070613d85afa697c62d6cbc54cc146cffcab27
Signed-off-by: Juan Manuel Cruz <juan.m.cruz.alcaraz@linux.intel.com>
This commit is contained in:
Juan Manuel Cruz 2015-05-06 10:30:41 -05:00 • committed by Anas Nashif
commit 6e666cf28a
3 changed files with 2 additions and 29 deletions
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25
Kconfig
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@ -94,31 +94,6 @@ config COMPILER_OPT
A given LKM or USAP can override this setting by means of the A given LKM or USAP can override this setting by means of the
OVERRIDE_COMPILER_OPT make variable in its Makefile. OVERRIDE_COMPILER_OPT make variable in its Makefile.
config SECTION_GARBAGE_COLLECTION
bool
prompt "ELF section garbage collection"
default y
help
This option enables the compiler to place each function and data
item into its own ELF section, which then allows the linker to
discard any sections that are not directly referenced. Enabling
this option should significantly reduce the final image size,
especially in situations when only a relatively few number of
APIs in the object modules are actually referenced.
Certain host tools expect the presence of various symbols in
the ELF image, regardless of image configuration or composition.
Enabling this option may cause these host tools to end abnormally
if the expected symbols have been discarded.
config BUILD_TIMESTAMP
bool
prompt "Build timestamp"
default n
help
This option embeds a string into the project image that indicates
the date and time the image was created.
endmenu endmenu
source "drivers/Kconfig" source "drivers/Kconfig"

3
scripts/Makefile.arm.preparch
View file

@ -1,6 +1,5 @@
LTO_FLAG-y = $(call cc-option,-flto,) LTO_FLAG-y = $(call cc-option,-flto,)
SECTION_GC_FLAG-y = $(call cc-option,-ffunction-sections,) $(call cc-option,-fdata-sections,) SECTION_GC_FLAG = $(call cc-option,-ffunction-sections,) $(call cc-option,-fdata-sections,)
SECTION_GC_FLAG = $(SECTION_GC_FLAG-$(CONFIG_SECTION_GARBAGE_COLLECTION))
arm_FLAGS = $(call cc-option,-mthumb,) arm_FLAGS = $(call cc-option,-mthumb,)
ifeq ($(CONFIG_CPU_CORTEXM3),y) ifeq ($(CONFIG_CPU_CORTEXM3),y)
arm_FLAGS += -mcpu=cortex-m3 arm_FLAGS += -mcpu=cortex-m3

3
scripts/Makefile.x86.preparch
View file

@ -1,11 +1,10 @@
PERF_OPT_FLAG-y = -DPERF_OPT PERF_OPT_FLAG-y = -DPERF_OPT
ALIGN_STACK_FLAG- = -mpreferred-stack-boundary=2 ALIGN_STACK_FLAG- = -mpreferred-stack-boundary=2
SECTION_GC_FLAG-y = $(call cc-option,-ffunction-sections,) $(call cc-option,-fdata-sections,) SECTION_GC_FLAG = $(call cc-option,-ffunction-sections,) $(call cc-option,-fdata-sections,)
LTO_FLAG-y = $(call cc-option,-flto,) LTO_FLAG-y = $(call cc-option,-flto,)
PERF_OPT=$(if $(filter -Os,$(DEFAULTFLAGS)),,y) PERF_OPT=$(if $(filter -Os,$(DEFAULTFLAGS)),,y)
PERF_OPT_FLAG = $(PERF_OPT_FLAG-$(PERF_OPT)) PERF_OPT_FLAG = $(PERF_OPT_FLAG-$(PERF_OPT))
ALIGN_STACK_FLAG = $(ALIGN_STACK_FLAG-$(PERF_OPT)) ALIGN_STACK_FLAG = $(ALIGN_STACK_FLAG-$(PERF_OPT))
SECTION_GC_FLAG = $(SECTION_GC_FLAG-$(CONFIG_SECTION_GARBAGE_COLLECTION))
LTO_FLAG = $(LTO_FLAG-$(CONFIG_LTO)) LTO_FLAG = $(LTO_FLAG-$(CONFIG_LTO))
ifneq ($(CONFIG_BSP_QUARK),y) ifneq ($(CONFIG_BSP_QUARK),y)
iSSE_FP_MATH_ ?= -mno-sse iSSE_FP_MATH_ ?= -mno-sse