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Viewing changes to m4/fastmath.m4

  • Committer: Package Import Robot
  • Author(s): Nicolas Bourdaud
  • Date: 2011-12-01 12:09:30 UTC
  • Revision ID: package-import@ubuntu.com-20111201120930-lmia8ytlwmif9yta
Tags: upstream-1.1
Import upstream version 1.1

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m4/fastmath.m4
 
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AC_DEFUN([AC_CHECK_FASTMATH_FLAG],
 
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[
 
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  AC_REQUIRE([AC_PROG_CC])
 
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  AC_MSG_CHECKING([for fast math compiler flag])
 
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  fm_save_CFLAGS="$CFLAGS"
 
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  CFLAGS="-ffast-math $CFLAGS"
 
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  FASTMATH_CFLAG=
 
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  AC_TRY_COMPILE(
 
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        [],
 
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        [],
 
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        gl_cv_cc_fastmath=yes,
 
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        gl_cv_cc_fastmath=no)
 
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  CFLAGS="$fm_save_CFLAGS"
 
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  if test $gl_cv_cc_fastmath = yes; then
 
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    FASTMATH_CFLAG="-ffast-math"
 
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  fi
 
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  AC_MSG_RESULT([$gl_cv_cc_fastmath])
 
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  AC_SUBST([FASTMATH_CFLAG])
 
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])
 
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AC_DEFUN([AC_USE_SSEMATH],
 
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[
 
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  AC_REQUIRE([AC_PROG_CC])
 
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  AC_MSG_CHECKING([for sse based math flag])
 
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  sm_save_CFLAGS="$CFLAGS"
 
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  CFLAGS="-mfpmath=sse $CFLAGS"
 
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  AC_TRY_COMPILE(
 
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        [],
 
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        [],
 
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        gl_cv_cc_ssemath=yes,
 
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        gl_cv_cc_ssemath=no)
 
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  CFLAGS="$sm_save_CFLAGS"
 
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  if test $gl_cv_cc_ssemath = yes; then
 
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    CFLAGS="-mfpmath=sse $CFLAGS"
 
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  fi
 
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  AC_MSG_RESULT([$gl_cv_cc_ssemath])
 
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  AC_SUBST([CFLAGS])
 
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])
 
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