Hi Lennart ! On Mon, Jan 10, 2022 at 4:21 PM Lennart Sorensen <lsore...@csclub.uwaterloo.ca> wrote: > > On Mon, Jan 10, 2022 at 03:49:56PM +0100, Mathieu Malaterre wrote: > > Dear arm porters, > > > > Could someone please clarify if I can build a package using gcc flags such > > as: > > > > -march=armv7-a -mfpu=neon-vfpv4 -mfloat-abi=hard -mfp16-format=ieee > > > > Ref: > > > > * > > https://salsa.debian.org/debian-phototools-team/highway/-/blob/master/CMakeLists.txt#L182-185 > > Well the debian armhf specification does NOT require neon support, > so packages should not require neon unless it is optional and provided > as runtime detected code or an alternate library to load or whatever > method works.
Please check: https://packages.qa.debian.org/f/fftw3.html Search for `-mfpu=neon` at: * https://buildd.debian.org/status/fetch.php?pkg=fftw3&arch=armhf&ver=3.3.8-2&stamp=1536684083&raw=0 I believe my issue (as explained by Arnd) is indeed the vfpv4 features.