32 lines
903 B
Plaintext
32 lines
903 B
Plaintext
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dnl @synopsis XIPH_C_COMPILER_IS_CLANG
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dnl
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dnl Find out if a compiler claiming to be gcc really is gcc (clang lies).
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dnl @version 1.0 Oct 31 2013
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dnl @author Erik de Castro Lopo <erikd AT mega-nerd DOT com>
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dnl
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dnl Permission to use, copy, modify, distribute, and sell this file for any
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dnl purpose is hereby granted without fee, provided that the above copyright
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dnl and this permission notice appear in all copies. No representations are
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dnl made about the suitability of this software for any purpose. It is
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dnl provided "as is" without express or implied warranty.
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dnl
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AC_DEFUN([XIPH_C_COMPILER_IS_CLANG],
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[AC_CACHE_CHECK(whether we are using the CLANG C compiler,
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xiph_cv_c_compiler_clang,
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[ AC_LANG_ASSERT(C)
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AC_TRY_LINK([
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#include <stdio.h>
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],
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[
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#ifndef __clang__
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This is not clang!
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#endif
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],
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xiph_cv_c_compiler_clang=yes,
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xiph_cv_c_compiler_clang=no
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])
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)]
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)
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