Comment 0 for bug 1814397

GCC 8-2018-q4
Windows 10 64-bit
Errors:
  ELF section name out of range
  ld: lto-wrapper failed

The project(s) are generated with the GNU MCU Eclipse STM32F4 template.

I tried both C and C++ projects, both fail if I enable LTO, and build properly if I disable LTO.

The console reads:

c:/users/ilg/appdata/roaming/gnu tools arm embedded/8-2018-q4/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/ld.exe: error: C:\Users\ilg\AppData\Local\Temp\cc08jQRZdebugobjtem: ELF section name out of range
collect2.exe: error: ld returned 1 exit status
lto-wrapper.exe: fatal error: arm-none-eabi-g++ returned 1 exit status
compilation terminated.
c:/users/ilg/appdata/roaming/gnu tools arm embedded/8-2018-q4/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/ld.exe: error: lto-wrapper failed
collect2.exe: error: ld returned 1 exit status
make: *** [makefile:64: f4b-lto.elf] Error 1
"make all" terminated with exit code 2. Build might be incomplete.

Both the original Arm binary and the similar GNU MCU Eclipse ARM Embedded GCC binary behave the same.

The problem seems to affect only the Windows binary; on Linux and macOS, projects created with exactly the same procedure, pass the build as expected.

Building target: f4b-lto.elf
Invoking: GNU ARM Cross C++ Linker
arm-none-eabi-g++ -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Os -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -flto -Wall -Wextra -g -T mem.ld -T libs.ld -T sections.ld -nostartfiles -Xlinker --gc-sections -L"../ldscripts" -Wl,-Map,"f4b-lto.map" --specs=nano.specs -o "f4b-lto.elf" ./system/src/stm32f4-hal/stm32f4xx_hal.o ./system/src/stm32f4-hal/stm32f4xx_hal_cortex.o ./system/src/stm32f4-hal/stm32f4xx_hal_dfsdm.o ./system/src/stm32f4-hal/stm32f4xx_hal_flash.o ./system/src/stm32f4-hal/stm32f4xx_hal_gpio.o ./system/src/stm32f4-hal/stm32f4xx_hal_iwdg.o ./system/src/stm32f4-hal/stm32f4xx_hal_pwr.o ./system/src/stm32f4-hal/stm32f4xx_hal_rcc.o ./system/src/newlib/_cxx.o ./system/src/newlib/_exit.o ./system/src/newlib/_sbrk.o ./system/src/newlib/_startup.o ./system/src/newlib/_syscalls.o ./system/src/newlib/assert.o ./system/src/diag/Trace.o ./system/src/diag/trace_impl.o ./system/src/cortexm/_initialize_hardware.o ./system/src/cortexm/_reset_hardware.o ./system/src/cortexm/exception_handlers.o ./system/src/cmsis/system_stm32f4xx.o ./system/src/cmsis/vectors_stm32f407xx.o ./src/BlinkLed.o ./src/Timer.o ./src/_initialize_hardware.o ./src/_write.o ./src/main.o ./src/stm32f4xx_hal_msp.o
Finished building target: f4b-lto.elf