问题
I want to use standard c function in one of my function
void print(const char* format,...) {
char buffer[256];
va_list args;
va_start (args, format);
vsnprintf (buffer,256,format, args);
va_end (args);
sendString(buffer);
}
Error coming is
arm-none-eabi-ld -o check.elf -T /home/sanju/Arm/check/other/ROM.ld Serial.o irq.o lowlevel.o main.o startup.o \
-L/usr/arm-none-eabi/lib -lc -lg -lm
/usr/arm-none-eabi/lib/libc.a(lib_a-svfprintf.o): In function `_svfprintf_r':
vfprintf.c:(.text+0x688): undefined reference to `__aeabi_dcmplt'
vfprintf.c:(.text+0xdfc): undefined reference to `__aeabi_dcmpeq'
vfprintf.c:(.text+0x10b4): undefined reference to `__aeabi_dcmpeq'
vfprintf.c:(.text+0x168c): undefined reference to `__aeabi_uldivmod'
vfprintf.c:(.text+0x16a8): undefined reference to `__aeabi_uldivmod'
vfprintf.c:(.text+0x1a48): undefined reference to `__aeabi_dcmpeq'
vfprintf.c:(.text+0x1eac): undefined reference to `__aeabi_dcmpeq'
/usr/arm-none-eabi/lib/libc.a(lib_a-dtoa.o): In function `quorem':
dtoa.c:(.text+0x3c): undefined reference to `__aeabi_uidiv'
/usr/arm-none-eabi/lib/libc.a(lib_a-dtoa.o): In function `_dtoa_r':
dtoa.c:(.text+0x274): undefined reference to `__aeabi_dcmpeq'
dtoa.c:(.text+0x360): undefined reference to `__aeabi_ui2d'
dtoa.c:(.text+0x37c): undefined reference to `__aeabi_dsub'
dtoa.c:(.text+0x388): undefined reference to `__aeabi_dmul'
dtoa.c:(.text+0x394): undefined reference to `__aeabi_dadd'
dtoa.c:(.text+0x3a4): undefined reference to `__aeabi_i2d'
dtoa.c:(.text+0x3b0): undefined reference to `__aeabi_dmul'
dtoa.c:(.text+0x3c4): undefined reference to `__aeabi_dadd'
dtoa.c:(.text+0x3d0): undefined reference to `__aeabi_d2iz'
dtoa.c:(.text+0x3e8): undefined reference to `__aeabi_dcmplt'
dtoa.c:(.text+0x418): undefined reference to `__aeabi_dcmpgt'
dtoa.c:(.text+0x5a8): undefined reference to `__aeabi_ddiv'
dtoa.c:(.text+0x5ac): undefined reference to `__aeabi_d2iz'
dtoa.c:(.text+0x5b4): undefined reference to `__aeabi_i2d'
dtoa.c:(.text+0x5c0): undefined reference to `__aeabi_dmul'
dtoa.c:(.text+0x5d4): undefined reference to `__aeabi_dsub'
dtoa.c:(.text+0x608): undefined reference to `__aeabi_dmul'
dtoa.c:(.text+0x61c): undefined reference to `__aeabi_dcmpeq'
dtoa.c:(.text+0x650): undefined reference to `__aeabi_dmul'
dtoa.c:(.text+0x664): undefined reference to `__aeabi_dcmpeq'
dtoa.c:(.text+0x684): undefined reference to `__aeabi_ddiv'
dtoa.c:(.text+0x688): undefined reference to `__aeabi_d2iz'
dtoa.c:(.text+0x690): undefined reference to `__aeabi_i2d'
dtoa.c:(.text+0x69c): undefined reference to `__aeabi_dmul'
dtoa.c:(.text+0x6b0): undefined reference to `__aeabi_dsub'
dtoa.c:(.text+0x6fc): undefined reference to `__aeabi_dadd'
dtoa.c:(.text+0x718): undefined reference to `__aeabi_dcmplt'
dtoa.c:(.text+0x73c): undefined reference to `__aeabi_dcmpeq'
dtoa.c:(.text+0xa94): undefined reference to `__aeabi_i2d'
dtoa.c:(.text+0xaa0): undefined reference to `__aeabi_dcmpeq'
dtoa.c:(.text+0xbf8): undefined reference to `__aeabi_ddiv'
dtoa.c:(.text+0xc2c): undefined reference to `__aeabi_dmul'
dtoa.c:(.text+0xc58): undefined reference to `__aeabi_ddiv'
dtoa.c:(.text+0xc80): undefined reference to `__aeabi_dcmplt'
dtoa.c:(.text+0xc90): undefined reference to `__aeabi_i2d'
dtoa.c:(.text+0xc9c): undefined reference to `__aeabi_dmul'
dtoa.c:(.text+0xca8): undefined reference to `__aeabi_dadd'
dtoa.c:(.text+0xce8): undefined reference to `__aeabi_ddiv'
dtoa.c:(.text+0xcf4): undefined reference to `__aeabi_dsub'
dtoa.c:(.text+0xd08): undefined reference to `__aeabi_d2iz'
dtoa.c:(.text+0xd10): undefined reference to `__aeabi_i2d'
dtoa.c:(.text+0xd24): undefined reference to `__aeabi_dsub'
dtoa.c:(.text+0xd54): undefined reference to `__aeabi_dcmpgt'
dtoa.c:(.text+0xd78): undefined reference to `__aeabi_dsub'
dtoa.c:(.text+0xd8c): undefined reference to `__aeabi_dcmpgt'
dtoa.c:(.text+0xdd0): undefined reference to `__aeabi_dsub'
dtoa.c:(.text+0xddc): undefined reference to `__aeabi_dcmplt'
dtoa.c:(.text+0xe00): undefined reference to `__aeabi_dmul'
dtoa.c:(.text+0xe1c): undefined reference to `__aeabi_dmul'
dtoa.c:(.text+0xe28): undefined reference to `__aeabi_d2iz'
dtoa.c:(.text+0xe30): undefined reference to `__aeabi_i2d'
dtoa.c:(.text+0xe44): undefined reference to `__aeabi_dsub'
dtoa.c:(.text+0xe64): undefined reference to `__aeabi_dcmplt'
dtoa.c:(.text+0xef0): undefined reference to `__aeabi_i2d'
dtoa.c:(.text+0xefc): undefined reference to `__aeabi_dmul'
dtoa.c:(.text+0xf08): undefined reference to `__aeabi_dadd'
dtoa.c:(.text+0xf24): undefined reference to `__aeabi_dsub'
dtoa.c:(.text+0xf38): undefined reference to `__aeabi_dcmpgt'
dtoa.c:(.text+0xf54): undefined reference to `__aeabi_dcmplt'
dtoa.c:(.text+0x10c0): undefined reference to `__aeabi_dmul'
dtoa.c:(.text+0x10e8): undefined reference to `__aeabi_dmul'
dtoa.c:(.text+0x1130): undefined reference to `__aeabi_dmul'
dtoa.c:(.text+0x1144): undefined reference to `__aeabi_d2iz'
dtoa.c:(.text+0x114c): undefined reference to `__aeabi_i2d'
dtoa.c:(.text+0x1160): undefined reference to `__aeabi_dsub'
dtoa.c:(.text+0x119c): undefined reference to `__aeabi_dmul'
dtoa.c:(.text+0x11a8): undefined reference to `__aeabi_d2iz'
dtoa.c:(.text+0x11b0): undefined reference to `__aeabi_i2d'
dtoa.c:(.text+0x11c8): undefined reference to `__aeabi_dsub'
dtoa.c:(.text+0x1200): undefined reference to `__aeabi_dadd'
dtoa.c:(.text+0x120c): undefined reference to `__aeabi_dcmplt'
dtoa.c:(.text+0x12cc): undefined reference to `__aeabi_dmul'
dtoa.c:(.text+0x12d8): undefined reference to `__aeabi_dcmpge'
dtoa.c:(.text+0x158c): undefined reference to `__aeabi_dmul'
dtoa.c:(.text+0x159c): undefined reference to `__aeabi_i2d'
dtoa.c:(.text+0x15b0): undefined reference to `__aeabi_dmul'
dtoa.c:(.text+0x15bc): undefined reference to `__aeabi_dadd'
dtoa.c:(.text+0x15ec): undefined reference to `__aeabi_dsub'
dtoa.c:(.text+0x15f8): undefined reference to `__aeabi_dcmpgt'
/usr/arm-none-eabi/lib/libc.a(lib_a-mprec.o): In function `__ratio':
mprec.c:(.text+0xbc0): undefined reference to `__aeabi_ddiv'
/usr/arm-none-eabi/lib/libc.a(lib_a-mprec.o): In function `_mprec_log10':
mprec.c:(.text+0xbf0): undefined reference to `__aeabi_dmul'
/usr/arm-none-eabi/lib/libc.a(lib_a-svfiprintf.o): In function `_svfiprintf_r':
vfprintf.c:(.text+0xf30): undefined reference to `__aeabi_uldivmod'
vfprintf.c:(.text+0xf4c): undefined reference to `__aeabi_uldivmod'
make: *** [all] Error 1
*** Failure: Exit code 2 ***
My makefile is this
TOOLCHAIN=arm-none-eabi-
ARM_CPU=arm7tdmi
VPATH= /home/sanju/Arm/check/src /home/sanju/Arm/check/other /home/sanju/Arm/check/include
INCLUDE= /home/sanju/Arm/check/include
CCFLAGS= -mcpu=$(ARM_CPU) -mthumb-interwork -ffunction-sections -Os -Wall
ASFLAGS= -mcpu=$(ARM_CPU) -mthumb-interwork -mfpu=softfpa -Wall
all: Serial.o irq.o lowlevel.o main.o startup.o
$(TOOLCHAIN)ld -o check.elf -T /home/sanju/Arm/check/other/ROM.ld Serial.o irq.o
lowlevel.o main.o startup.o \
-L/usr/arm-none-eabi/lib -lc -lg -lm
$(TOOLCHAIN)objcopy -O ihex check.elf check.hex
$(TOOLCHAIN)objcopy -O binary check.elf check.bin
Serial.o : Serial.c Serial.h
$(TOOLCHAIN)gcc $(CCFLAGS) -I$(INCLUDE) -c $<
irq.o : irq.c irq.h lpc214x.h
$(TOOLCHAIN)gcc $(CCFLAGS) -I$(INCLUDE) -c $<
lowlevel.o : lowlevel.c lowlevel.h
$(TOOLCHAIN)gcc $(CCFLAGS) -I$(INCLUDE) -c $<
main.o : main.c lpc214x.h timer0.h Asm.h lowlevel.h type.h Serial.h
$(TOOLCHAIN)gcc $(CCFLAGS) -I$(INCLUDE) -c $<
startup.o : startup.S
$(TOOLCHAIN)as $(ASFLAGS) -o startup.o $<
.PHONY: clean
clean :
rm -rf *.o *.elf *.hex *.o *.bin
In the target all it fails in linking. I have tried the example with arm-elf toolchain there also i am getting some errors.I have googled a lot for it but did not find any solution for it.
回答1:
Try using gcc as ld frontend.
Change:
$(TOOLCHAIN)ld -o check.elf [...]
into
$(TOOLCHAIN)gcc -o check.elf [...]
GCC knows to add some necessary options when invoking ld.
回答2:
Do things go any better when adding "-lgcc" to -L?
回答3:
instead of using ld for linking i used gcc but it was including the supplied crt.o object file so i used -nostartfiles and it worked for me.
来源：https://stackoverflow.com/questions/17633115/arm-sourcery-toolchain-linking-error