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Member "gnuastro-0.8/bootstrapped/m4/multiarch.m4" (28 Dec 2018, 1980 Bytes) of package /linux/privat/gnuastro-0.8.tar.lz:


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    1 # multiarch.m4 serial 7
    2 dnl Copyright (C) 2008-2018 Free Software Foundation, Inc.
    3 dnl This file is free software; the Free Software Foundation
    4 dnl gives unlimited permission to copy and/or distribute it,
    5 dnl with or without modifications, as long as this notice is preserved.
    6 
    7 # Determine whether the compiler is or may be producing universal binaries.
    8 #
    9 # On Mac OS X 10.5 and later systems, the user can create libraries and
   10 # executables that work on multiple system types--known as "fat" or
   11 # "universal" binaries--by specifying multiple '-arch' options to the
   12 # compiler but only a single '-arch' option to the preprocessor.  Like
   13 # this:
   14 #
   15 #     ./configure CC="gcc -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
   16 #                 CXX="g++ -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
   17 #                 CPP="gcc -E" CXXCPP="g++ -E"
   18 #
   19 # Detect this situation and set APPLE_UNIVERSAL_BUILD accordingly.
   20 
   21 AC_DEFUN_ONCE([gl_MULTIARCH],
   22 [
   23   dnl Code similar to autoconf-2.63 AC_C_BIGENDIAN.
   24   gl_cv_c_multiarch=no
   25   AC_COMPILE_IFELSE(
   26     [AC_LANG_SOURCE(
   27       [[#ifndef __APPLE_CC__
   28          not a universal capable compiler
   29         #endif
   30         typedef int dummy;
   31       ]])],
   32     [
   33      dnl Check for potential -arch flags.  It is not universal unless
   34      dnl there are at least two -arch flags with different values.
   35      arch=
   36      prev=
   37      for word in ${CC} ${CFLAGS} ${CPPFLAGS} ${LDFLAGS}; do
   38        if test -n "$prev"; then
   39          case $word in
   40            i?86 | x86_64 | ppc | ppc64)
   41              if test -z "$arch" || test "$arch" = "$word"; then
   42                arch="$word"
   43              else
   44                gl_cv_c_multiarch=yes
   45              fi
   46              ;;
   47          esac
   48          prev=
   49        else
   50          if test "x$word" = "x-arch"; then
   51            prev=arch
   52          fi
   53        fi
   54      done
   55     ])
   56   if test $gl_cv_c_multiarch = yes; then
   57     APPLE_UNIVERSAL_BUILD=1
   58   else
   59     APPLE_UNIVERSAL_BUILD=0
   60   fi
   61   AC_SUBST([APPLE_UNIVERSAL_BUILD])
   62 ])