• Manuel Lauss's avatar
    MIPS: Fix build with binutils 2.24.51+ · 842dfc11
    Manuel Lauss authored
    Starting with version 2.24.51.20140728 MIPS binutils complain loudly
    about mixing soft-float and hard-float object files, leading to this
    build failure since GCC is invoked with "-msoft-float" on MIPS:
    
    {standard input}: Warning: .gnu_attribute 4,3 requires `softfloat'
      LD      arch/mips/alchemy/common/built-in.o
    mipsel-softfloat-linux-gnu-ld: Warning: arch/mips/alchemy/common/built-in.o
     uses -msoft-float (set by arch/mips/alchemy/common/prom.o),
     arch/mips/alchemy/common/sleeper.o uses -mhard-float
    
    To fix this, we detect if GAS is new enough to support "-msoft-float" command
    option, and if it does, we can let GCC pass it to GAS;  but then we also need
    to sprinkle the files which make use of floating point registers with the
    necessary ".set hardfloat" directives.
    Signed-off-by: default avatarManuel Lauss <manuel.lauss@gmail.com>
    Cc: Linux-MIPS <linux-mips@linux-mips.org>
    Cc: Matthew Fortune <Matthew.Fortune@imgtec.com>
    Cc: Markos Chandras <Markos.Chandras@imgtec.com>
    Cc: Maciej W. Rozycki <macro@linux-mips.org>
    Patchwork: https://patchwork.linux-mips.org/patch/8355/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
    842dfc11
r4k_switch.S 6.07 KB