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GCC Compiler failed at setting of BANK_VALID_APP flag

System:

-nRF51822, SDK11, Eclipse with GCC

-Project based on dfu_dualbank_s132

Intention:

Flash the combined SoftDevice, Bootloader and Application, where the device branches to the application

Recommented Solution from Nordic:

#elif defined ( __GNUC__ )
uint8_t m_boot_settings[CODE_PAGE_SIZE] __attribute__((at(BOOTLOADER_SETTINGS_ADDRESS))) __attribute__((used)) = {BANK_VALID_APP};

**Compiler Error Message**

error: 'at' attribute directive ignored [-Werror=attributes]
 uint8_t m_boot_settings[CODE_PAGE_SIZE] __attribute__((at(BOOTLOADER_SETTINGS_ADDRESS))) __attribute__((used)) = {BANK_VALID_APP};

Question

It seems to be stupid, but I have no idea, what could be missing ?

Uwe

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