QBS 1.7.1 on Qt Creator 4.2.1 — Link Fails Due to cpp.linkerFlags Parameters Order

[ReiVilo]

I've defined the following cpp.linkerFlags on QBS 1.7.1 for Qt Creator 4.2.1

cpp.linkerFlags: [
  "-mcpu=cortex-m4",
  "-mfloat-abi=hard","-mfpu=fpv4-sp-d16","-mabi=aapcs","-fsingle-precision-constant",
  "-T",boardPackagePath+"variants/EK-TM4C123GXL/lm4fcpp_blizzard.ld",
  "-mthumb","-nostdlib","-nostartfiles",
  "-Wl,--gc-sections","-Wl,--check-sections","-Wl,--gc-sections","-Wl,--entry=ResetISR",
  "-Wl,--unresolved-symbols=report-all","-Wl,--warn-common","-Wl,--warn-section-align",
  boardPackagePath+"system/driverlib/libdriverlib.a", "-lm","-lc","-lgcc"
]

The resulting Linking Test_2.elf is performed as

arm-none-eabi-g++ {cpp.linkerFlags} {list of .o files}

while the correct syntax for linking would be

arm-none-eabi-g++ {cpp.linkerFlags} {list of .o files} {boardPackagePath}+system/driverlib/libdriverlib.a -lm -lc -lgcc

How to define the last two lines with QBS

  boardPackagePath+"system/driverlib/libdriverlib.a", "-lm","-lc","-lgcc"

so they are included after the list of .o files?

Thank you!

[ReiVilo]

Please find the solution at https://bugreports.qt.io/browse/QBS-1123.

Main culprit is the lack of structured documentation for Qbs available today.

[ReiVilo]

Same with the MSP432.

boardPackagePath+"system/driverlib/libdriverlib.a", "-lm","-lc","-lgcc" should be at the very end of the link command, after the list of files.

[ReiVilo]

Example of complete implementation on mbedOS with LD_SYS_LIBS:

@$(LD) $(LD_FLAGS) -T $(filter %.ld, $^) $(LIBRARY_PATHS) --output $@ $(filter %.o, $^) $(LIBRARIES) $(LD_SYS_LIBS)

[ReiVilo]

Please find the solution at https://bugreports.qt.io/browse/QBS-1123.

Main culprit is the lack of structured documentation for Qbs available today.