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let linker remove unused sections

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This commit is contained in:
Felix Ruess
2009-09-18 11:56:52 +00:00
parent 8ccae70c2f
commit b30279dde5
3 changed files with 48 additions and 44 deletions
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conf/Makefile.arm7
+22 -20
View File
@@ -18,8 +18,8 @@
# You should have received a copy of the GNU General Public License
# along with paparazzi; see the file COPYING. If not, write to
# the Free Software Foundation, 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.
#
# Boston, MA 02111-1307, USA.
#
#
@@ -55,9 +55,9 @@ FORMAT = ihex
SRCARM = $($(TARGET).srcs)
ASRCARM = crt0.S
ASRCARM = crt0.S
# Optimization level, can be [0, 1, 2, 3, s].
# Optimization level, can be [0, 1, 2, 3, s].
# 0 = turn off optimization. s = optimize for size.
# (Note: 3 is not always the best optimization level. See avr-libc FAQ.)
OPT = s
@@ -71,17 +71,18 @@ CINCS = $(INCLUDES) -I $(SRC_ARCH)/include
CFLAGS = $(CINCS)
CFLAGS += -O$(OPT)
# CFLAGS += -malignment-traps
CFLAGS += -Wall -Wcast-qual -Wimplicit -Wcast-align
CFLAGS += -Wall -Wcast-qual -Wimplicit -Wcast-align -Winline
CFLAGS += -Wpointer-arith -Wswitch
CFLAGS += -Wredundant-decls -Wreturn-type -Wshadow -Wunused
CFLAGS += -Wa,-adhlns=$(OBJDIR)/$(notdir $(subst $(suffix $<),.lst,$<))
CFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS))
CFLAGS += -ffunction-sections -fdata-sections
# flags only for C
CFLAGS + = -Wstrict-prototypes -Wmissing-declarations
CFLAGS += -Wmissing-prototypes -Wnested-externs
CFLAGS += -Wmissing-prototypes -Wnested-externs
CFLAGS += $(CSTANDARD)
CFLAGS += $($(TARGET).CFLAGS) $(LOCAL_CFLAGS)
CFLAGS += $($(TARGET).CFLAGS) $(LOCAL_CFLAGS)
# Assembler flags.
ASFLAGS = -Wa,-adhlns=$(OBJDIR)/$(notdir $(<:.S=.lst))
@@ -93,8 +94,9 @@ MATH_LIB = -lm
LDFLAGS = -n -nostartfiles -Wl,-Map=$(OBJDIR)/$(TARGET).map,--cref
LDFLAGS += -lc
LDFLAGS += $(NEWLIBLPC) $(MATH_LIB)
LDFLAGS += -lc -lgcc
LDFLAGS += -lc -lgcc
LDFLAGS += $(CPLUSPLUS_LIB)
LDFLAGS += -Wl,--gc-sections
# -lusbstack -Larm7/lpcusb
ifndef LDSCRIPT
@@ -110,7 +112,7 @@ LDFLAGS +=-T$(LDSCRIPT)
# ---------------------------------------------------------------------------
# Flash-Programming support using lpc21isp by Martin Maurer
# Flash-Programming support using lpc21isp by Martin Maurer
# Settings and variables:
LPC21ISP = lpc21isp
@@ -128,7 +130,7 @@ LPC21ISP_CONTROL =
endif
# ---------------------------------------------------------------------------
# Flash-Programming support using lpc21iap by Martin Muller (usb bootloader)
# Flash-Programming support using lpc21iap by Martin Muller (usb bootloader)
LPC21IAP = $(PAPARAZZI_SRC)/sw/ground_segment/lpc21iap/lpc21iap
@@ -136,7 +138,7 @@ LPC21IAP = $(PAPARAZZI_SRC)/sw/ground_segment/lpc21iap/lpc21iap
# Define all object files.
COBJ = $(SRC:%.c=$(OBJDIR)/%.o)
COBJ = $(SRC:%.c=$(OBJDIR)/%.o)
AOBJ = $(ASRC:%.S=$(OBJDIR)/%.o)
COBJARM = $(SRCARM:%.c=$(OBJDIR)/%.o)
AOBJARM = $(ASRCARM:%.S=$(OBJDIR)/%.o)
@@ -160,7 +162,7 @@ build: elf hex lss sym
elf: $(OBJDIR)/$(TARGET).elf
hex: $(OBJDIR)/$(TARGET).hex
lss: $(OBJDIR)/$(TARGET).lss
lss: $(OBJDIR)/$(TARGET).lss
sym: $(OBJDIR)/$(TARGET).sym
@@ -174,11 +176,11 @@ sizeafter:
@if [ -f $(OBJDIR)/$(TARGET).elf ]; then echo; $(ELFSIZE); echo; fi
# Program the device.
# Program the device.
load upload program: $(OBJDIR)/$(TARGET).hex
ifeq ($(FLASH_MODE),IAP)
$(SUDO) $(LPC21IAP) $(OBJDIR)/$(TARGET).elf
else
else
@echo
$(LPC21ISP) $(LPC21ISP_CONTROL) $(LPC21ISP_DEBUG) $(LPC21ISP_FLASHFILE) $(LPC21ISP_PORT) $(LPC21ISP_BAUD) $(LPC21ISP_XTAL)
endif
@@ -205,7 +207,7 @@ endif
# Link: create ELF output file from object files.
.SECONDARY : $(OBJDIR)/$(TARGET).elf
.PRECIOUS : $(AOBJARM) $(AOBJ) $(COBJARM) $(COBJ)
.PRECIOUS : $(AOBJARM) $(AOBJ) $(COBJARM) $(COBJ)
%.elf: $(AOBJARM) $(AOBJ) $(COBJARM) $(COBJ)
@echo LD $@
$(Q)$(CC) $(THUMB) $(ALL_CFLAGS) $(AOBJARM) $(AOBJ) $(COBJARM) $(COBJ) --output $@ $(LDFLAGS) $($(TARGET).LDFLAGS)
@@ -215,17 +217,17 @@ endif
$(OBJDIR)/%.o : %.c $(OBJDIR)/../Makefile.ac
@echo CC $@
$(Q)test -d $(dir $@) || mkdir -p $(dir $@)
$(Q)$(CC) -c $(ALL_CFLAGS) $(CONLYFLAGS) $< -o $@
$(Q)$(CC) -c $(ALL_CFLAGS) $(CONLYFLAGS) $< -o $@
$(OBJDIR)/%.o : $(SRC_ARCH)/lpcusb/%.c $(OBJDIR)/../Makefile.ac
@echo CC $@
$(Q)$(CC) -c $(ALL_CFLAGS) $(CONLYFLAGS) $< -o $@
$(Q)$(CC) -c $(ALL_CFLAGS) $(CONLYFLAGS) $< -o $@
# grab files in var/$(AIRCRAFT)/$(TARGET) aka $(OBJDIR)
#$(OBJDIR)/%.o : $(OBJDIR)/%.c
# @echo CC $@
# $(Q)$(CC) -c $(ALL_CFLAGS) $(CONLYFLAGS) $< -o $@
# $(Q)$(CC) -c $(ALL_CFLAGS) $(CONLYFLAGS) $< -o $@
# Assemble: create object files from assembler source files. ARM/Thumb
$(AOBJ) : $(OBJDIR)/%.o : %.S
@@ -281,8 +283,8 @@ $(OBJDIR)/.depend:
@test -d $(OBJDIR) || mkdir -p $(OBJDIR)
$(Q)$(CC) -MM -MG $(CFLAGS) $($(TARGET).CFLAGS) $($(TARGET).srcs) | sed 's|\([^\.]*\.o\)|$(OBJDIR)/\1|' > $@
ifneq ($(MAKECMDGOALS),clean)
ifneq ($(MAKECMDGOALS),erase)
ifneq ($(MAKECMDGOALS),clean)
ifneq ($(MAKECMDGOALS),erase)
-include $(OBJDIR)/.depend
endif
endif
sw/airborne/arm7/LPC2148-ROM-bl.ld
+13 -12
View File
@@ -28,21 +28,21 @@ SECTIONS
*(.rodata*)
*(.gnu.linkonce.r.*)
} > ROM
/***** old:
/***** old:
.text :
{
*crt0.o (.text)
*(.text)
*(.rodata)
*crt0.o (.text)
*(.text)
*(.rodata)
*(.rodata*)
*(.glue_7)
*(.glue_7t)
} > ROM
} > ROM
*****/
. = ALIGN(4);
/* .ctors .dtors are used for c++ constructors/destructors */
/* added by Martin Thomas 4/2005 based on Anglia Design example */
.ctors :
@@ -52,18 +52,18 @@ SECTIONS
KEEP(*(.ctors))
PROVIDE(__ctors_end__ = .);
} >ROM
.dtors :
{
PROVIDE(__dtors_start__ = .);
PROVIDE(__dtors_start__ = .);
KEEP(*(SORT(.dtors.*)))
KEEP(*(.dtors))
PROVIDE(__dtors_end__ = .);
} >ROM
. = ALIGN(4);
/* mthomas - end */
_etext = . ;
PROVIDE (etext = .);
@@ -78,7 +78,7 @@ SECTIONS
. = ALIGN(4);
*(.fastrun) /* !!!! "RAM-Function" example */
} > RAM
. = ALIGN(4);
_edata = . ;
PROVIDE (edata = .);
@@ -89,6 +89,7 @@ SECTIONS
__bss_start = . ;
__bss_start__ = . ;
*(.bss)
*(.bss.*)
*(.gnu.linkonce.b*)
*(COMMON)
. = ALIGN(4);
sw/airborne/arm7/LPC2148-ROM.ld
+13 -12
View File
@@ -28,21 +28,21 @@ SECTIONS
*(.rodata*)
*(.gnu.linkonce.r.*)
} > ROM
/***** old:
/***** old:
.text :
{
*crt0.o (.text)
*(.text)
*(.rodata)
*crt0.o (.text)
*(.text)
*(.rodata)
*(.rodata*)
*(.glue_7)
*(.glue_7t)
} > ROM
} > ROM
*****/
. = ALIGN(4);
/* .ctors .dtors are used for c++ constructors/destructors */
/* added by Martin Thomas 4/2005 based on Anglia Design example */
.ctors :
@@ -52,18 +52,18 @@ SECTIONS
KEEP(*(.ctors))
PROVIDE(__ctors_end__ = .);
} >ROM
.dtors :
{
PROVIDE(__dtors_start__ = .);
PROVIDE(__dtors_start__ = .);
KEEP(*(SORT(.dtors.*)))
KEEP(*(.dtors))
PROVIDE(__dtors_end__ = .);
} >ROM
. = ALIGN(4);
/* mthomas - end */
_etext = . ;
PROVIDE (etext = .);
@@ -78,7 +78,7 @@ SECTIONS
. = ALIGN(4);
*(.fastrun) /* !!!! "RAM-Function" example */
} > RAM
. = ALIGN(4);
_edata = . ;
PROVIDE (edata = .);
@@ -89,6 +89,7 @@ SECTIONS
__bss_start = . ;
__bss_start__ = . ;
*(.bss)
*(.bss.*)
*(.gnu.linkonce.b*)
*(COMMON)
. = ALIGN(4);