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  • Committer: Package Import Robot
  • Author(s): Hilko Bengen
  • Date: 2011-12-01 22:09:50 UTC
  • mfrom: (6.1.8 sid)
  • Revision ID: package-import@ubuntu.com-20111201220950-bm48fpock4e7l6rd
* New upstream version
* [1f9e20f] Cleared patch queue, added gnulib fix

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m4/float_h.m4
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# float_h.m4 serial 7
 
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# float_h.m4 serial 9
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dnl Copyright (C) 2007, 2009-2011 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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          ;;
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      esac
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      ;;
 
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    linux*)
 
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      case "$host_cpu" in
 
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        powerpc*)
 
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          FLOAT_H=float.h
 
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          ;;
 
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      esac
 
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      ;;
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  esac
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  case "$host_os" in
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    aix* | freebsd*)
 
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    aix* | freebsd* | linux*)
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      if test -n "$FLOAT_H"; then
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        REPLACE_FLOAT_LDBL=1
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      fi
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      ;;
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  esac
 
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  dnl Test against glibc-2.7 Linux/SPARC64 bug.
 
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  REPLACE_ITOLD=0
 
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  AC_CACHE_CHECK([whether conversion from 'int' to 'long double' works],
 
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    [gl_cv_func_itold_works],
 
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    [
 
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      AC_RUN_IFELSE(
 
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        [AC_LANG_SOURCE([[
 
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int i = -1;
 
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volatile long double ld;
 
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int main ()
 
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{
 
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  ld += i * 1.0L;
 
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  if (ld > 0)
 
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    return 1;
 
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  return 0;
 
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}]])],
 
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        [gl_cv_func_itold_works=yes],
 
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        [gl_cv_func_itold_works=no],
 
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        [case "$host" in
 
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           sparc*-*-linux*)
 
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             AC_EGREP_CPP([yes],
 
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               [#if defined __LP64__ || defined __arch64__
 
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                yes
 
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                #endif],
 
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               [gl_cv_func_itold_works="guessing no"],
 
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               [gl_cv_func_itold_works="guessing yes"])
 
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             ;;
 
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           *) gl_cv_func_itold_works="guessing yes" ;;
 
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         esac
 
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        ])
 
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    ])
 
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  case "$gl_cv_func_itold_works" in
 
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    *no)
 
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      REPLACE_ITOLD=1
 
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      dnl We add the workaround to <float.h> but also to <math.h>,
 
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      dnl to increase the chances that the fix function gets pulled in.
 
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      FLOAT_H=float.h
 
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      ;;
 
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  esac
 
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  if test -n "$FLOAT_H"; then
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    gl_NEXT_HEADERS([float.h])
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  fi
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  AC_SUBST([FLOAT_H])
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  AM_CONDITIONAL([GL_GENERATE_FLOAT_H], [test -n "$FLOAT_H"])
 
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  AC_SUBST([REPLACE_ITOLD])
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])