On Friday, December 20th, 2024 at 12:08 AM, Bernd Paysan <be...@net2o.de> wrote:
> Am Donnerstag, 19. Dezember 2024, 21:57:15 Mitteleuropäische Normalzeit > schrieb shtps via Gforth discussion and announcements: > > > Hello > > > > I am unable to build gforth-0.7.9_20241211 on GNU/Linux (Debian 12) with a > > Samsung's Exynos 5422 8-core 32bit ARMv7 CPU. > > > > $ uname -a > > Linux odroid 6.3.1-armmp-lpae #exynos5 SMP PREEMPT Mon May 8 15:27:00 UTC > > 2023 armv7l GNU/Linux > > > > I've followed the instructions in INSTALL.md for the tarball build with the > > default options. ./configure succeeds but make fails with: > > > > make[1]: Entering directory '/home/shtps/gforth-0.7.9_20241211/engine' > > CC -o io.o io.c > > cc1: error: ‘-mfloat-abi=hard’: selected architecture lacks an FPU > > make[1]: *** [Makefile:142: io.o] Error 1 > > make[1]: Leaving directory '/home/shtps/gforth-0.7.9_20241211/engine' > > make: *** [Makefile:1457: engine/io.o] Error 2 > > > > I've attempted to solve this by modifying configure.ac. I've changed the > > $host_cpu switch statement with the CFLAGS for gnueabihf from > > > > CFLAGS="$CFLAGS -marm -march=armv6" > > > > to > > > > CFLAGS="$CFLAGS -mcpu=generic-armv7-a" > > > > With this I was able to get it to proceed the build, however I now get a > > segfault during what seems to be the image generation for gforth-light.fi. > > I also tried various other flags, like -mcpu=native and various flags with > > and without hard floating point and also soft floating point. If the build > > proceeds without compiler errors the same image generation part always > > segfaults. > > > > Attached you will find the logs for both the defaults and with my custom > > CFLAGS listed above. > > > > Any idea what the issue may be? > > > From the configure script, which modifies the CFLAGS for Android (but not > Linux), I would suggest: > > CFLAGS="$CFLAGS -march=armv7-a -mfloat-abi=softfp -mfpu=vfp" > > This works on a wide range of Android phone CPUs, of which that Exynos is one. > > That snapshot (20241211) had a problem with an uninitialized variable, so try > the latest one (20241218). > > -- > Bernd Paysan > "If you want it done right, you have to do it yourself" > net2o id: kQusJzA;7*?t=uy@X}1GWr!+0qqp_Cn176t4(dQ* > https://net2o.de/ Thank you, I was able to build it with that snapshot and the following options: CFLAGS="$CFLAGS -march=armv7-a -mfloat-abi=hard -mfpu=vfp" Best Regards
