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dnl ##############################################################################
dnl # AC_CHECK_LANG_ICC #
dnl # Check if the current language is compiled using ICC #
dnl # Adapted from http://software.intel.com/en-us/forums/showthread.php?t=67984 #
dnl ##############################################################################
AC_DEFUN([AC_CHECK_LANG_ICC],
[AC_CACHE_CHECK([whether we are using Intel _AC_LANG compiler],
[ac_cv_[]_AC_LANG_ABBREV[]_intel_compiler],
[_AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],
[[#ifndef __INTEL_COMPILER
error if not ICC
#endif
]])],
[is_icc=yes],
[is_icc=no])
ac_cv_[]_AC_LANG_ABBREV[]_intel_compiler=$is_icc
])])
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