https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62099
Bug ID: 62099
Summary: bootstrap build fails on ARM hard float system
Product: gcc
Version: 4.9.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
Assignee: unassigned at gcc dot gnu.org
Reporter: pab at pabigot dot com
gcc 4.9.1 bootstrap on an ARM hard-float system (TI AM3358 Cortex-A8 beaglebone
using Yocto: arm-poky-linux-gnueabi) fails with:
/home/pab/build/./gcc/xgcc -B/home/pab/build/./gcc/
-B/usr/local/gcc/armv7l-unknown-linux-gnueabihf/bin/
-B/usr/local/gcc/armv7l-unknown-linux-gnueabihf/lib/ -isystem
/usr/local/gcc/armv7l-unknown-linux-gnueabihf/include -isystem
/usr/local/gcc/armv7l-unknown-linux-gnueabihf/sys-include -g -O2 -O2 -g -O2
-DIN_GCC -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wno-format
-Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem
./include -fPIC -fno-inline -g -DIN_LIBGCC2 -fbuilding-libgcc
-fno-stack-protector -fPIC -fno-inline -I. -I. -I../.././gcc
-I../../../gcc-4.9.1/libgcc -I../../../gcc-4.9.1/libgcc/.
-I../../../gcc-4.9.1/libgcc/../gcc -I../../../gcc-4.9.1/libgcc/../include
-DHAVE_CC_TLS -o _muldi3.o -MT _muldi3.o -MD -MP -MF _muldi3.dep -DL_muldi3 -c
../../../gcc-4.9.1/libgcc/libgcc2.c -fvisibility=hidden -DHIDE_EXPORTS
In file included from /usr/include/features.h:402:0,
from /usr/include/stdio.h:27,
from ../../../gcc-4.9.1/libgcc/../gcc/tsystem.h:87,
from ../../../gcc-4.9.1/libgcc/libgcc2.c:27:
/usr/include/gnu/stubs.h:7:29: fatal error: gnu/stubs-soft.h: No such file or
directory
# include <gnu/stubs-soft.h>
Unlike the stage1 compiler, the host compiler always defines __ARM_PCS_VFP and
there is no gnu/stubs-soft.h available.
gcc-4.9.1 configured with only: --enable-languages=c,c++
--prefix=/usr/local/gcc
The gross workaround is to symlink stubs-soft.h -> stubs-hard.h and restart the
build.
https://gcc.gnu.org/ml/gcc-help/2013-02/msg00141.html suggests this has been
present since at least gcc 4.8.0.
