https://devzone.nordicsemi.com/f/nordic-q-a/4900/error-in-sdk-hal-compiler_abstraction-hIt was mentioned before that the compiler_abstraction.h file for gcc produces this error sequence when -std=c99 is selected: In file included from /prj/arm/nrf51-sdk/components/drivers_nrf/hal/nrf.h:44:0, from /prj/arm/nrf51-sdk/components/toolchainen-USTelligent Community 13Wed, 14 Jan 2015 12:31:56 GMThttps://devzone.nordicsemi.com/thread/17308?ContentTypeID=1Wed, 14 Jan 2015 12:31:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ade99db0-f3d5-4372-ac6e-a5eda423afa6Vidar Berg<p>Thanks for reporting this. Ideally It should compile with C99 as well so I have forwarded this request to the SDK team.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/17307?ContentTypeID=1Fri, 02 Jan 2015 19:46:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:123ae525-d40c-4f45-83db-ae708649748fpabigot<p><del>This wasn&#39;t a question, but the devzone API apparently lacks a category for &quot;feedback to Nordic, please fix this sometime.&quot;</del></p> <p>SDK 8.0.0 fixes this in <code>components/device/compiler_abstraction.h</code> but the issue remains in the copy in <code>examples/dfu/experimental_ant_bootloader/libs/include/compiler_abstraction.h</code>.</p><div style="clear:both;"></div>