[Bug libgcc/97543] powerpc64le: libgcc has unexpected long double in .gnu_attribute

[gustavowalbon at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97543

--- Comment #11 from Gustavo Walbon  ---
Michael,

Works with GCC v10.
I backported this patch for the Alpine[1] gcc v10 and then I used the libgcc
package to test. I have used the binutils v2.35.1 with the warning of the GNU
Attribute and the patch doesn't show the warning.


1 -
https://github.com/walbon/aports/commit/f188c0b799df8550c595d6a94ffc6dab0254d11a

Thanks Michael

[Bug libgcc/97543] powerpc64le: libgcc has unexpected long double in .gnu_attribute

[gustavowalbon at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97543

Gustavo Walbon  changed:

   What|Removed |Added

 CC||gustavowalbon at gmail dot com

--- Comment #1 from Gustavo Walbon  ---
I have seeing a bunch of packages failing because this warning of linker when I
build several packages on Alpine for PowerPc.

I have a alpine container running on a PowerPC 8, and I rebuilt the all gcc
packages with the flags --with-long-double-64 and --without-long-double-128 to
avoid this error, but that still happens 

I used the same code as Tulio to reproduce that warning.

~ $ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/powerpc64le-alpine-linux-musl/10.2.0/lto-wrapper
Target: powerpc64le-alpine-linux-musl
Configured with: /home/devel/aports/main/gcc/src/gcc-10.2.0/configure
--prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info
--build=powerpc64le-alpine-linux-musl --host=powerpc64le-alpine-linux-musl
--target=powerpc64le-alpine-linux-musl --with-pkgversion='Alpine 10.2.0'
--enable-checking=release --disable-fixed-point --disable-libstdcxx-pch
--disable-multilib --disable-nls --disable-werror --disable-symvers
--enable-__cxa_atexit --enable-default-pie --enable-default-ssp
--enable-cloog-backend --enable-languages=c,c++,objc,go,fortran,ada
--with-abi=elfv2 --enable-secureplt --enable-decimal-float=no
--enable-targets=powerpcle-linux --with-long-double-64
--without-long-double-128 --disable-libquadmath --disable-libssp
--disable-libmpx --disable-libmudflap --disable-libsanitizer --enable-shared
--enable-threads --enable-tls --with-system-zlib --with-linker-hash-style=gnu
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 10.2.0 (Alpine 10.2.0)

~ $ gcc -O0 -mlong-double-64 test-ldouble64.c && ./a.out
/usr/lib/gcc/powerpc64le-alpine-linux-musl/10.2.0/../../../../powerpc64le-alpine-linux-musl/bin/ld:
/tmp/ccHidlkA.o uses 64-bit long double,
/usr/lib/gcc/powerpc64le-alpine-linux-musl/10.2.0/../../../../lib/libgcc_s.so.1
uses 128-bit long double
/usr/lib/gcc/powerpc64le-alpine-linux-musl/10.2.0/../../../../powerpc64le-alpine-linux-musl/bin/ld:
/tmp/ccHidlkA.o uses 64-bit long double,
/usr/lib/gcc/powerpc64le-alpine-linux-musl/10.2.0/../../../../lib/libgcc_s.so.1
uses 128-bit long double
sizeof(long double) = 8
a * b = 16.00