[Bug target/83105] [8 regression] arm-*-*eabihf: error: -mfloat-abi=hard: selected processor lacks an FPU
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83105 Jeffrey A. Law changed: What|Removed |Added Status|NEW |RESOLVED CC||law at redhat dot com Resolution|--- |FIXED --- Comment #6 from Jeffrey A. Law --- Per c#5.
[Bug target/83105] [8 regression] arm-*-*eabihf: error: -mfloat-abi=hard: selected processor lacks an FPU
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83105
--- Comment #5 from Richard Earnshaw ---
Fixed. We now select ARM10E as the default CPU when --with-float={hard,softfp}
is specified.
[Bug target/83105] [8 regression] arm-*-*eabihf: error: -mfloat-abi=hard: selected processor lacks an FPU
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83105 --- Comment #4 from Richard Earnshaw --- Author: rearnsha Date: Wed Dec 20 10:30:00 2017 New Revision: 255858 URL: https://gcc.gnu.org/viewcvs?rev=255858=gcc=rev Log: [arm] PR target/83105: Minor change of default CPU for arm-linux-gnueabi When GCC for ARM/linux is configured with --with-float=hard, or --with-float=softfp the compiler will now die when trying to build the support libraries because the baseline architecture is too old to support VFP (older versions of GCC just emitted the VFP instructions anyway, even though they wouldn't run on that version of the architecture; but we're now more prickly about it). This patch fixed the problem by raising the default architecture (actually the default CPU) to ARMv5te (ARM10e) when we need to generate HW floating-point code. PR target/83105 * config.gcc (arm*-*-linux*): When configured with --with-float=hard or --with-float=softfp, set the default CPU to arm10e. Modified: trunk/gcc/ChangeLog trunk/gcc/config.gcc
[Bug target/83105] [8 regression] arm-*-*eabihf: error: -mfloat-abi=hard: selected processor lacks an FPU
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83105 Richard Earnshaw changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2017-12-19 Ever confirmed|0 |1
[Bug target/83105] [8 regression] arm-*-*eabihf: error: -mfloat-abi=hard: selected processor lacks an FPU
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83105 --- Comment #3 from nsz at gcc dot gnu.org --- (In reply to Jakub Jelinek from comment #1) > Any reason why this should be a supportable configuration? I want hard > float, but don't care what CPU/FPU I target... i think there should be a baseline target that provides the widest possible compatibility when one wants to distribute a binary. (in which case the user should not try to hardcode a cpu/fpu name in their gcc build script) i think it should work for --with-float=hard and arm*-gnueabihf target, but if not then this configuration should be rejected earlier. (to me it makes sense to raise the baseline of arm*-gnueabihf to armv5te but leave arm*-gnueabi at armv5t) i don't use many different toolchain build scripts, but from that small set 2 got broken by this change, one of them is the glibc test script which required a workaround like https://sourceware.org/ml/libc-alpha/2017-12/msg00611.html i think requiring such change is suboptimal.
[Bug target/83105] [8 regression] arm-*-*eabihf: error: -mfloat-abi=hard: selected processor lacks an FPU
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83105 --- Comment #2 from Richard Earnshaw --- The baseline target CPU for arm linux is ARM10TDMI (armv5t), but that processor only had VFPv1 and GCC has never supported that. Code generated historically was incompatible with that target and if you ran it on an ARM10TDMI it would crash. We could, of course raise the baseline to arm10e (armv5te), which has VFPv2 (and some additional instructions).
[Bug target/83105] [8 regression] arm-*-*eabihf: error: -mfloat-abi=hard: selected processor lacks an FPU
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83105 Jakub Jelinek changed: What|Removed |Added CC||jakub at gcc dot gnu.org, ||ktkachov at gcc dot gnu.org --- Comment #1 from Jakub Jelinek --- Any reason why this should be a supportable configuration? I want hard float, but don't care what CPU/FPU I target...
[Bug target/83105] [8 regression] arm-*-*eabihf: error: -mfloat-abi=hard: selected processor lacks an FPU
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83105 Richard Biener changed: What|Removed |Added Target Milestone|--- |8.0
