glibc/ports/sysdeps/unix/sysv/linux/mips/configure.in

sinclude(./aclocal.m4)dnl Autoconf lossage
GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
# Local configure fragment for sysdeps/unix/sysv/linux/mips.

AC_COMPILE_IFELSE(
  [AC_LANG_PROGRAM([
    #if (_MIPS_SIM != _ABIO32)
    #error Not O32 ABI
    #endif])],
  [libc_mips_abi=o32],
  [AC_COMPILE_IFELSE(
    [AC_LANG_PROGRAM([
      #if (_MIPS_SIM != _ABIN32)
      #error Not N32 ABI
      #endif])],
    [libc_mips_abi=n32],
    [AC_COMPILE_IFELSE(
      [AC_LANG_PROGRAM([
        #if (_MIPS_SIM != _ABI64)
        #error Not 64 ABI
        #endif])],
      [libc_mips_abi=n64],
      [])])])

if test -z "$libc_mips_abi"; then
  AC_MSG_ERROR([could not determine what ABI the compiler is using])
fi

AC_COMPILE_IFELSE(
  [AC_LANG_PROGRAM([
    #if !defined(__mips_soft_float)
    #error Not soft ABI
    #endif])],
  [libc_mips_float=soft],
  [AC_COMPILE_IFELSE(
    [AC_LANG_PROGRAM([
      #if !defined(__mips_hard_float)
      #error Not hard ABI
      #endif])],
    [libc_mips_float=hard],
    [])])

if test -z "$libc_mips_float"; then
  AC_MSG_ERROR([could not determine if compiler is using hard or soft floating point ABI])
fi

echo "default-abi := ${libc_mips_abi}_${libc_mips_float}" > default-abi.make

case "$prefix" in
/usr | /usr/)
  # 64-bit libraries on bi-arch platforms go in /lib64 instead of /lib.
  # Allow earlier configure scripts to handle libc_cv_slibdir, libdir,
  # and libc_cv_localedir.
  test -n "$libc_cv_slibdir" || \
  case $machine in
  mips/mips64/n64/* )
    libc_cv_slibdir="/lib64"
    if test "$libdir" = '${exec_prefix}/lib'; then
      libdir='${exec_prefix}/lib64';
      # Locale data can be shared between 32bit and 64bit libraries
      libc_cv_localedir='${exec_prefix}/lib/locale'
    fi
    ;;
  mips/mips64/n32/* )
    libc_cv_slibdir="/lib32"
    if test "$libdir" = '${exec_prefix}/lib'; then
      libdir='${exec_prefix}/lib32';
      # Locale data can be shared between 32bit and 64bit libraries
      libc_cv_localedir='${exec_prefix}/lib/locale'
    fi
    ;;
  *)
    libc_cv_slibdir="/lib"
    ;;
  esac
esac

libc_cv_gcc_unwind_find_fde=yes