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27 lines
953 B
Text
27 lines
953 B
Text
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# SYNOPSIS
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#
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# GS_CHECK_CC_IS_CLANG([run-if-true],[run-if-false])
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#
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# DESCRIPTION
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#
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# This macro checks whether the active C compiler is a variant of clang. Upon return
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#
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# * The makefile variable `CLANG_CC' is set to `yes' or `no'.
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# * The variables `CLANG_CC' and `gs_cv_cc_is_clang' are set to the same values.
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# * Additionally if clang, run shell code run-if-true
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# else run shell code run-if-false.
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AC_DEFUN([GS_CHECK_CC_IS_CLANG],dnl
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[AC_REQUIRE([AC_PROG_CC])
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AC_CACHE_CHECK([whether the compiler is clang],[_gs_cv_cc_is_clang], [dnl
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_gs_cv_cc_is_clang="no"
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if test x"${GCC}" = x"yes" ; then
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if "${CC}" -v 2>&1 | grep -q 'clang version'; then
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_gs_cv_cc_is_clang="yes";
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fi
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fi
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])
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AS_VAR_SET([gs_cv_cc_is_clang], [${_gs_cv_cc_is_clang}])
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AS_VAR_SET([CLANG_CC], [${_gs_cv_cc_is_clang}])
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AC_SUBST([CLANG_CC])
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AS_VAR_IF([_gs_cv_cc_is_clang], ["yes"], [$1], [$2])
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])
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