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Hi Yann, all, On Saturday, February 16, 2013 12:31:12 AM, Yann E. MORIN wrote: > BenoÃt, All, > > On Tuesday 05 February 2013 BenoÃt ThÃbaudeau wrote: > > # HG changeset patch > > # User "BenoÃt ThÃbaudeau" <benoit.thebaudeau@advansee.com> > > # Date 1360063792 -3600 > > # Node ID bdf1fde968aee8d0cd953aa1bc1068537fab1dc3 > > # Parent 20f2459b97bf5eb89e2f125e0aede9541e7fc049 > > samples: add arm-cortexa9_neon-linux-gnueabihf > [--SNIP--] > > +CT_ARCH_FPU="neon" > > Is that really 'neon' ? Yes, for Cortex-A8/9 (VFPv3). > I thought its gcc name was something like > 'neon-vfpv4' (or v3?)... 'neon-vfpv4' exists, but it is for CortexA5/15 (VFPv4). > [--SNIP--] > > +CT_CC_CORE_EXTRA_CONFIG_ARRAY="\"--with-specs=%{save-temps: -fverbose-asm} > > %{funwind-tables|fno-unwind-tables|mabi=*|ffreestanding|nostdlib:;: > > -funwind-tables}\" --enable-poison-system-directories" > > Can you explain what this specific specs are supposed to achieve (sorry, > I am not fluent in gcc's specs) and why they are needed? I had taken that from the Sourcery build script at the time of the fork with Linaro in order to use exactly the same build options as them, and I have kept this since then. It means: - Pass '-fverbose-asm' to the subprocess if '-save-temps' was given to GCC. If the user asks to keep the temporary build files, it is in order to read them, so making them verbose helps for debug purposes. - Pass '-funwind-tables' to the subprocess if neither '-funwind-tables' nor '-fno-unwind-tables' nor '-mabi=*' nor '-ffreestanding' nor '-nostdlib' was given to GCC. This seems to also be more for debug purposes than something really needed. Best regards, BenoÃt -- For unsubscribe information see http://sourceware.org/lists.html#faq
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