[Bug build/22581] glibc-2.26 fails to build for i486 with -Os

adhemerval.zanella at linaro dot org sourceware-bugzilla@sourceware.org
Mon Dec 18 11:57:00 GMT 2017


https://sourceware.org/bugzilla/show_bug.cgi?id=22581

Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
                 CC|                            |adhemerval.zanella at linaro dot o
                   |                            |rg
         Resolution|---                         |INVALID

--- Comment #1 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
The issue is confirparms is not used on configure and for i386 we require to
check if the compiler allows to use ebp in inline assembly (check
sysdeps/unix/sysv/linux/i386/configure.ac).

Instead of using configparms you can try to configure it differently as:

CC="gcc -isystem /usr/lib/gcc/i486-pc-linux-gnu/7.2.0/include -isystem
/usr/include" CFLAGS="-march=i486 -mtune=i686 -Os -pipe" ../configure
--prefix=/usr --libexecdir=/usr/lib/glibc --enable-kernel=4.2.9
--enable-stack-protector=strong libc_cv_slibdir=/lib --disable-werror

There is no plan to support integrate configparms on configure check, although
patches are welcome.

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