EmbDev.net

Forum: ARM programming with GCC/GNU tools help undefined reference to `cos'

help undefined reference to `cos'

von magnetron (Guest)

2013-03-11 18:05

Rate this post

•	▲ useful ▼ not useful

hello forum
I got "undefined reference to `cos' error" for ARM Cortex M4

where to change below Eclipse makefile ?
thank you

#-------------------------------------------------------------------------------
#    Rules
#-------------------------------------------------------------------------------
CFLAGS = -Wall -fno-common -c -g -mcpu=cortex-m3 -mthumb
CFLAGS += -g $(OPTIMIZATION) $(INCLUDES) -DTRACE_LEVEL=$(TRACE_LEVEL)
ASFLAGS = -g -mapcs-32
LDFLAGS = -mcpu=cortex-m3 -mthumb -g -v -nostartfiles
OBJCOPYFLAGS = -O binary
OBJDUMPFLAGS = -x --syms -S
all: $(BIN) $(OBJ) $(OUTPUT).out
$(BIN) $(OBJ):
  mkdir $@
$(OUTPUT).out: $(C_OBJECTS) $(ASM_OBJECTS) $(LINKER_SCRIPT)
  @ echo "..linking"
  $(LD) $(LDFLAGS) -T$(LINKER_SCRIPT) -o $(OUTPUT).out $(C_OBJECTS) $(ASM_OBJECTS) libgcc.a
  $(OBJCOPY) $(OBJCOPYFLAGS) $(OUTPUT).out $(OUTPUT).bin
#   $(OBJDUMP) $(OBJDUMPFLAGS) $(OUTPUT).out > $(OUTPUT).lss
  @ echo "...completed."

Report post Edit Move Thread sperren Anmeldepflicht aktivieren Anpinnen Delete topic Thread mit anderem zusammenführen Quote selected text Reply Reply with quote

Re: help undefined reference to `cos'

von Mac (Guest)

2013-03-11 18:19

Rate this post

•	▲ useful ▼ not useful

LDFLAGS needs -lm

Report post Edit Delete Quote selected text Reply Reply with quote

Re: help undefined reference to `cos'

von magnetron (Guest)

2013-03-11 19:00

Rate this post

•	▲ useful ▼ not useful

LDFLAGS = -mcpu=cortex-m3 -mthumb -g -v -nostartfiles -lm

I tried above line, no success - still same error
I also cleaned the project and recompiled , still same error

Report post Edit Delete Quote selected text Reply Reply with quote

Re: help undefined reference to `cos'

von Johann L. (gjlayde)

2013-03-11 19:07

Rate this post