https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70133
Andrew Roberts <andrewm.roberts at sky dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |andrewm.roberts at sky dot com
--- Comment #4 from Andrew Roberts <andrewm.roberts at sky dot com> ---
I've built latest snapshot on Arch Linux Arm aarch64 Odroid-C2 system and see
the same thing:
/usr/local/gcc-6.0.0/bin/gcc -v
Using built-in specs.
COLLECT_GCC=/usr/local/gcc-6.0.0/bin/gcc
COLLECT_LTO_WRAPPER=/usr/local/gcc-6.0.0/libexec/gcc/aarch64-unknown-linux-gnu/6
.0.0/lto-wrapper
Target: aarch64-unknown-linux-gnu
Configured with: ../gcc-6.0.0/configure --prefix=/usr/local/gcc-6.0.0
--program-
suffix= --disable-werror --enable-shared --enable-threads=posix
--enable-checkin
g=release --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exception
s --enable-gnu-unique-object --enable-linker-build-id
--with-linker-hash-style=g
nu --enable-plugin --enable-initfini-array --enable-gnu-indirect-function
--enab
le-lto --with-isl --enable-languages=c,c++,fortran --disable-libgcj
--enable-clo
cale=gnu --disable-libstdcxx-pch --enable-install-libiberty --disable-multilib
-
-enable-shared --enable-clocale=gnu --with-arch-directory=aarch64
--enable-multi
arch --host=aarch64-unknown-linux-gnu --build=aarch64-unknown-linux-gnu
--target
=aarch64-unknown-linux-gnu --with-arch=armv8-a --disable-bootstrap
Thread model: posix
gcc version 6.0.0 20160313 (experimental) (GCC)
echo "int main(void) { return 0; }" | /usr/local/gcc-6.0.0/bin/gcc
-march=native
-c -x c -
Assembler messages:
Error: must specify extensions to add before specifying those to remove
Error: unrecognized option -march=armv8-a+fp+simd+nocrypto+crc+nolse
Where as:
echo "int main(void) { return 0; }" | /usr/local/gcc-6.0.0/bin/gcc
-march=armv8-
a+simd+crc+nolse -c -x c -
works
This is with binutils:
ld -v
GNU ld (GNU Binutils) 2.26.0.20160302
cat /proc/cpuinfo
Processor : AArch64 Processor rev 4 (aarch64)
processor : 0
processor : 1
processor : 2
processor : 3
Features : fp asimd crc32
CPU implementer : 0x41
CPU architecture: AArch64
CPU variant : 0x0
CPU part : 0xd03
CPU revision : 4
Hardware : ODROID-C2
Revision : 020b
uname -a
Linux alarm 3.14.29-10-ARCH #1 SMP PREEMPT Wed Mar 16 20:13:56 MDT 2016 aarch64
GNU/Linux
I also saw the same thing with the Linero compiler on Ubuntu, and Arch Linux's
gcc 5.3.0. I did try to build gcc 6 snapshot on Ubuntu to report it but it was
too flakey, Arch Works better.
