thodg/cgminer/m4/multiarch.m4

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• Hash : 3320c627
  Author :
  Date : 2011-07-04T19:49:03
  

  Added previously missing gnulib files. Conflicts: ocl.c

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• m4/multiarch.m4

• # multiarch.m4 serial 6
  dnl Copyright (C) 2008-2011 Free Software Foundation, Inc.
  dnl This file is free software; the Free Software Foundation
  dnl gives unlimited permission to copy and/or distribute it,
  dnl with or without modifications, as long as this notice is preserved.
  
  # Determine whether the compiler is or may be producing universal binaries.
  #
  # On MacOS X 10.5 and later systems, the user can create libraries and
  # executables that work on multiple system types--known as "fat" or
  # "universal" binaries--by specifying multiple '-arch' options to the
  # compiler but only a single '-arch' option to the preprocessor.  Like
  # this:
  #
  #     ./configure CC="gcc -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
  #                 CXX="g++ -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
  #                 CPP="gcc -E" CXXCPP="g++ -E"
  #
  # Detect this situation and set APPLE_UNIVERSAL_BUILD accordingly.
  
  AC_DEFUN_ONCE([gl_MULTIARCH],
  [
    dnl Code similar to autoconf-2.63 AC_C_BIGENDIAN.
    gl_cv_c_multiarch=no
    AC_COMPILE_IFELSE(
      [AC_LANG_SOURCE(
        [[#ifndef __APPLE_CC__
           not a universal capable compiler
          #endif
          typedef int dummy;
        ]])],
      [
       dnl Check for potential -arch flags.  It is not universal unless
       dnl there are at least two -arch flags with different values.
       arch=
       prev=
       for word in ${CC} ${CFLAGS} ${CPPFLAGS} ${LDFLAGS}; do
         if test -n "$prev"; then
           case $word in
             i?86 | x86_64 | ppc | ppc64)
               if test -z "$arch" || test "$arch" = "$word"; then
                 arch="$word"
               else
                 gl_cv_c_multiarch=yes
               fi
               ;;
           esac
           prev=
         else
           if test "x$word" = "x-arch"; then
             prev=arch
           fi
         fi
       done
      ])
    if test $gl_cv_c_multiarch = yes; then
      APPLE_UNIVERSAL_BUILD=1
    else
      APPLE_UNIVERSAL_BUILD=0
    fi
    AC_SUBST([APPLE_UNIVERSAL_BUILD])
  ])
  

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