From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Petazzoni Date: Mon, 18 Jan 2016 21:39:09 +0100 Subject: [Buildroot] [PATCH v2] libffi: fix the build for MIPS soft-float with recent compilers In-Reply-To: <1453135700-2404-1-git-send-email-Vincent.Riera@imgtec.com> References: <1453135700-2404-1-git-send-email-Vincent.Riera@imgtec.com> Message-ID: <20160118213909.615d016a@free-electrons.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net Vicente, On Mon, 18 Jan 2016 16:48:20 +0000, Vicente Olivert Riera wrote: > Recent MIPS compilers have an stricter agreement between the compiler > and the assembler on the ABI. The compiler now passes -msoft-float to > the assembler where it previously did not. > > libffi uses MIPS hard-float instructions so when we try to build it for > soft-float using a recent compiler it fails because of the explained > above. This package should be fixed in order to add support for > soft-float. > > In the meantime we can add a little hack in order to be able to build it > for soft-float. Basically we add ".set hardfloat" so the assembler will > not disable the hard-float instructions. The build will of course > include some hard-float bits which shouldn't exist in a soft-float > build, and that may cause runtime problems. But that's what we already > had before and we had lived with it. > > We choose to apply this temporary fix because it only affects MIPS > soft-float builds. Otherwise we would need to disable libffi and > recursively all the packages depending on it (python, libglib2...) for > MIPS soft-float, which would be a bit overkill. > > Fixes: > > http://autobuild.buildroot.net/results/6b0607b7cb0ac5525c2e47e819301f38bd2d6b30/ > > Signed-off-by: Vicente Olivert Riera > --- > Changes v1 -> v2: > - Add autobuild URL Tested-by: Thomas Petazzoni (building with our Sourcery MIPS configuration fails without the patch, works with this patch applied.) Thanks! Thomas -- Thomas Petazzoni, CTO, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com