C:\mspgcc4\bin\msp430-gcc ./Obj/main.o ./Obj/process_MB.o ./Obj/measure.o
./Obj/temperature.o ./Obj/utils.o ./Obj/TimerB.o ./Obj/flash.o ./Obj/gen.o ./Obj/AD7708.o
./Obj/mb.o ./Obj/mbcrc.o ./Obj/mbrtu.o ./Obj/portevent.o ./Obj/portserial.o ./Obj/porttimer.o
./Obj/mbfunccoils.o ./Obj/mbfuncdiag.o ./Obj/mbfuncdisc.o ./Obj/mbfuncholding.o ./Obj/mbfuncinput.o
./Obj/mbfuncother.o ./Obj/mbutils.o ./Obj/dco.o
-mmcu=msp430x149 -Wl,--section-start -Wl,.seg_a=0x1080 -Wl,--gc-sections
-Wl,-Map=9010U.map,--cref -LC:\mspgcc4"\bin\lib" -LC:\mspgcc4"\msp430\lib"
-LC:\mspgcc4"\msp430\include" -LC:\mspgcc4"\msp430\include\msp430" -Wl,-relax -lc -lm -o 9010U.elf
./Obj/mb.o: In function `abs':
mb.c:(.text.abs+0x0): multiple definition of `abs'
./Obj/TimerB.o:TimerB.c:(.text.abs+0x0): first defined here
c:\mspgcc4\bin\msp430-ld.exe: Disabling relaxation: it will not work with multiple definitions
./Obj/mb.o: In function `labs':
mb.c:(.text.labs+0x0): multiple definition of `labs'
./Obj/TimerB.o:TimerB.c:(.text.labs+0x0): first defined here
./Obj/mbrtu.o: In function `abs':
mbrtu.c:(.text.abs+0x0): multiple definition of `abs'
./Obj/TimerB.o:TimerB.c:(.text.abs+0x0): first defined here
./Obj/mbrtu.o: In function `labs':
mbrtu.c:(.text.labs+0x0): multiple definition of `labs'
./Obj/TimerB.o:TimerB.c:(.text.labs+0x0): first defined here
./Obj/mbfunccoils.o: In function `abs':
mbfunccoils.c:(.text.abs+0x0): multiple definition of `abs'
./Obj/TimerB.o:TimerB.c:(.text.abs+0x0): first defined here
./Obj/mbfunccoils.o: In function `labs':
mbfunccoils.c:(.text.labs+0x0): multiple definition of `labs'
./Obj/TimerB.o:TimerB.c:(.text.labs+0x0): first defined here
./Obj/mbfuncdisc.o: In function `abs':
mbfuncdisc.c:(.text.abs+0x0): multiple definition of `abs'
./Obj/TimerB.o:TimerB.c:(.text.abs+0x0): first defined here
./Obj/mbfuncdisc.o: In function `labs':
mbfuncdisc.c:(.text.labs+0x0): multiple definition of `labs'
./Obj
/TimerB.o:TimerB.c:(.text.labs+0x0): first defined here
./Obj/mbfuncholding.o: In function `abs':
mbfuncholding.c:(.text.abs+0x0): multiple definition of `abs'
./Obj/TimerB.o:TimerB.c:(.text.abs+0x0): first defined here
./Obj/mbfuncholding.o: In function `labs':
mbfuncholding.c:(.text.labs+0x0): multiple definition of `labs'
./Obj/TimerB.o:TimerB.c:(.text.labs+0x0): first defined here
./Obj/mbfuncinput.o: In function `abs':
mbfuncinput.c:(.text.abs+0x0): multiple definition of `abs'
./Obj/TimerB.o:TimerB.c:(.text.abs+0x0): first defined here
./Obj/mbfuncinput.o: In function `labs':
mbfuncinput.c:(.text.labs+0x0): multiple definition of `labs'
./Obj/TimerB.o:TimerB.c:(.text.labs+0x0): first defined here
./Obj/mbfuncother.o: In function `abs':
mbfuncother.c:(.text.abs+0x0): multiple definition of `abs'
./Obj/TimerB.o:TimerB.c:(.text.abs+0x0): first defined here
./Obj/mbfuncother.o: In function `labs':
mbfuncother.c:(.text.labs+0x0): multiple definition of `labs'
./Obj/TimerB.o:TimerB.c:(.text.labs+0x0): first defined here
./Obj/mbutils.o: In function `abs':
mbutils.c:(.text.abs+0x0): multiple definition of `abs'
./Obj/TimerB.o:TimerB.c:(.text.abs+0x0): first defined here
./Obj/mbutils.o: In function `labs':
mbutils.c:(.text.labs+0x0): multiple definition of `labs'
./Obj/TimerB.o:TimerB.c:(.text.labs+0x0): first defined here
collect2: ld returned 1 exit status
mingw32-make.exe: *** [9010U.elf] Error 1
Process terminated with status 2 (0 minutes, 21 seconds)

extern __inline__ int abs(int __x) __ATTR_CONST__;
extern __inline__ int abs(int __x)
{
    return (__x < 0)  ?  -__x  :  __x;
}
        
extern __inline__ long labs(long __x) __ATTR_CONST__;
extern __inline__ long labs(long __x)
{
    return (__x < 0)  ?  -__x  :  __x;
}

#define __inline__

#CFLAGS += -fno-ivopts
CFLAGS += -fno-tree-scev-cprop
#CFLAGS += -fno-split-wide-types
CFLAGS += -fno-inline-small-functions
CFLAGS += -fno-inline-functions

#adjust --param inline-call-cost= to get minimal code size
CFLAGS += --param inline-call-cost=1
#CFLAGS += -fno-reorder-blocks
#CFLAGS += -fno-reorder-blocks-and-partition
#CFLAGS += -fno-reorder-functions
#CFLAGS += -fno-toplevel-reorder
CFLAGS += -fno-move-loop-invariants
#CFLAGS += -fno-unroll-loops
#CFLAGS += -fno-unroll-all-loops
#CFLAGS += --param max-unroll-times=0

Build project 9010U - OK.
   text       data        bss        dec        hex    filename
  14413         72        742      15227       3b7b    9010U.elf

   text       data        bss        dec        hex    filename
  13077         72        742      13891       3643    9010U.elf