System Workbench for STM32

Thanks for information. Now it is giving error for "uses VFP register arguments, " any suggestion

16:09:07 **** Incremental Build of configuration Debug for project UnitTest ****
make all
Building target: UnitTest.elf
Invoking: MCU GCC Linker
arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -L"/home/sachin/workspace/UnitTest/STM32_display/Lib" -T"/home/sachin/workspace/UnitTest/LinkerScript.ld" -Wl,-Map=output.map -Wl,--gc-sections -o "UnitTest.elf" @"objects.list" -lSTM32displayV3.0.0_CM4_GCC -lSTM32displayV3.0.0_CM4_GCC_ot -lm
/home/sachin/Ac6/SystemWorkbench/plugins/fr.ac6.mcu.externaltools.arm-none.linux64_1.15.0.201708311556/tools/compiler/bin/../lib/gcc/arm-none-eabi/6.3.1/../../../../arm-none-eabi/bin/ld: error: UnitTest.elf uses VFP register arguments, /home/sachin/workspace/UnitTest/STM32_display/Lib/libSTM32displayV3.0.0_CM4_GCC.a(display.o) does not
/home/sachin/Ac6/SystemWorkbench/plugins/fr.ac6.mcu.externaltools.arm-none.linux64_1.15.0.201708311556/tools/compiler/bin/../lib/gcc/arm-none-eabi/6.3.1/../../../../arm-none-eabi/bin/ld: failed to merge target specific data of file /home/sachin/workspace/UnitTest/STM32_display/Lib/libSTM32displayV3.0.0_CM4_GCC.a(display.o)
collect2: error: ld returned 1 exit status
make: *** UnitTest.elf Error 1
makefile:37: recipe for target 'UnitTest.elf' failed