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Disable gcc-4.8.x + binutils-2.25 + MIPS combination

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This combination causes a compilation failure of the host-gcc-final
recipe like this one:

/br/output/host/usr/mips-buildroot-linux-gnu/bin/ld:
.libs/gload.o: relocation R_MIPS_HI16 against `__gnu_local_gp' can not
be used when making a shared object; recompile with -fPIC

The problem is the file 'libatomic/gload.c' is compiled without -fPIC
when using binutils-2.25. All gcc (with libatomic) versions below 4.9.3
are affected by this issue.

Here is a summary of affected/unaffected versions in Buildroot:

4.7.x: unaffected (doesn't have libatomic)
4.8.x: affected
4.9.x: unaffected (we have 4.9.3 which is fixed)
5.1.x: unaffected

The fix can be found here:

  57f5c0954f

However, given the following reasons...

- Upstream gcc 4.8 branch is closed.
- The fix is very hard to backport from 4.9 to 4.8.
- This stuff is insanely sensitive and not working at all could be
  better than looking like it works but not quite.

...I think the best choice is to disable that combination in Buildroot.

Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Vicente Olivert Riera 2015-07-02 17:19:08 +02:00 committed by Thomas Petazzoni
parent 86ae63af05
commit 2fda0dd7d4
1 changed files with 2 additions and 0 deletions
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2
package/gcc/Config.in.host
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@ -60,6 +60,8 @@ choice
depends on !BR2_cortex_a12
# Broken or unsupported PPC cores
depends on !BR2_powerpc_power8
# gcc-4.8.x + binutils-2.25 is broken for MIPS
depends on !((BR2_mips || BR2_mipsel || BR2_mips64 || BR2_mips64el) && BR2_BINUTILS_VERSION_2_25)
select BR2_GCC_NEEDS_MPC
select BR2_GCC_SUPPORTS_GRAPHITE