x86: disable --gc-sections for Travis' sake

[Kijewski]

I could not reproduce the problem at home, but on Travis CI after
merging #1415 tests/unittest failed to execute for qemu-i386.

There is a crash early in the initialization, caused by a #PF. The
execution hangs afterwards (cli; 0: hlt; jmp 0b), and Travis kills
the execution after 10 minutes.

[miri64]

\o/ It's working again. ACK

[OlegHahm]

Still not working here.

[Kijewski]

What do you get when you execute make BOARD=qemu-i386 term instead of … test?

[OlegHahm]

Apparently the correct result:

2014-08-06 15:56:03.539157: OK (73 tests)

[Kijewski]

But … test fails / gives no output?

[Kijewski]

(I don't like the new color theme of Github, btw.)

[OlegHahm]

Yes, test gives no output.

And don't worry about the color theme - Github is changing its UI constantly, so it won't last for too long.

[Kijewski]

Can you send me the .elf file and post the output of gcc -###?

[OlegHahm]

Using built-in specs.
COLLECT_GCC=/usr/bin/gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-unknown-linux-gnu/4.9.1/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: /build/gcc-multilib/src/gcc-4.9.1/configure --prefix=/usr --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=https://bugs.archlinux.org/ --enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared --enable-threads=posix --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch --disable-libssp --enable-gnu-unique-object --enable-linker-build-id --enable-cloog-backend=isl --disable-isl-version-check --disable-cloog-version-check --enable-lto --enable-plugin --enable-install-libiberty --with-linker-hash-style=gnu --enable-multilib --disable-werror --enable-checking=release
Thread model: posix
gcc version 4.9.1 (GCC)