avr-gcc  -mmcu=atmega644 -mmcu=atmega644 -Wall -gdwarf-2 -std=gnu99
  -DF_CPU=16000000UL -Os -funsigned-char -funsigned-bitfields 
  -fpack-struct -fshort-enums -MD -MP -MT lcdcon.o 
  -MF dep/lcdcon.o.d  -x assembler-with-cpp -Wa,-gdwarf2 -c  ../lcdcon.S
avr-gcc  -mmcu=atmega644 -mmcu=atmega644 -Wall -gdwarf-2 -std=gnu99
  -DF_CPU=16000000UL -Os -funsigned-char -funsigned-bitfields 
  -fpack-struct -fshort-enums -MD -MP -MT lcdisr.o -MF dep/lcdisr.o.d  
  -x assembler-with-cpp -Wa,-gdwarf2 -c  ../lcdisr.S
  
../lcdisr.S: Assembler messages:
../lcdisr.S:31: Error: constant value required
../lcdisr.S:31: Error: garbage at end of line
../lcdisr.S:32: Error: constant value required
../lcdisr.S:32: Error: constant value required
../lcdisr.S:35: Error: constant value required
../lcdisr.S:35: Error: constant value required
../lcdisr.S:40: Error: constant value required
../lcdisr.S:40: Error: constant value required
../lcdisr.S:43: Error: constant value required
../lcdisr.S:44: Error: constant value required
../lcdisr.S:44: Error: register name or number from 0 to 31 required
../lcdisr.S:72: Error: unknown opcode `lcd16bitou'
../lcdisr.S:79: Error: constant value required
../lcdisr.S:84: Error: constant value required
../lcdisr.S:84: Error: constant value required
../lcdisr.S:133: Error: constant value required
../lcdisr.S:133: Error: `,' required
../lcdisr.S:133: Error: constant value required
../lcdisr.S:133: Error: garbage at end of line
make: *** [lcdisr.o] Error 1
Build failed with 1 errors and 112 warnings...