On 2015-03-05 23:38:00 +0200, Martin Storsjö wrote: > When all the codepaths using manually set .arch/.fpu code is > behind runtime detection, the elf attributes should be suppressed. > > This allows tools to know that the final built binary doesn't > strictly require these extensions. > --- > Moved the check down into the arm section, removed a redundant > check, and changed "test" into [ to match the surrounding style. > --- > configure | 6 ++++++ > libavutil/arm/asm.S | 6 ++++++ > 2 files changed, 12 insertions(+) > > diff --git a/configure b/configure > index 0e182b4..0042246 100755 > --- a/configure > +++ b/configure > @@ -1494,6 +1494,7 @@ SYSTEM_FUNCS=" > TOOLCHAIN_FEATURES=" > as_dn_directive > as_func > + as_object_arch > asm_mod_q > attribute_may_alias > attribute_packed > @@ -3921,6 +3922,11 @@ ra .dn d0.i16 > .unreq ra > EOF > > + # llvm's integrated assembler supports .object_arch from llvm 3.5 > + [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch > +.object_arch armv4 > +EOF > + > [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && > enable_weak_pic > > elif enabled mips; then > diff --git a/libavutil/arm/asm.S b/libavutil/arm/asm.S > index 8479304..943c1ce 100644 > --- a/libavutil/arm/asm.S > +++ b/libavutil/arm/asm.S > @@ -49,11 +49,17 @@ > #elif HAVE_ARMV5TE > .arch armv5te > #endif > +#if HAVE_AS_OBJECT_ARCH > +ELF .object_arch armv4 > +#endif > > #if HAVE_NEON > .fpu neon > +ELF .eabi_attribute 10, 0 @ suppress Tag_FP_arch > +ELF .eabi_attribute 12, 0 @ suppress Tag_Advanced_SIMD_arch > #elif HAVE_VFP > .fpu vfp > +ELF .eabi_attribute 10, 0 @ suppress Tag_FP_arch > #endif > > .syntax unified
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