21 lines
562 B
Plaintext
21 lines
562 B
Plaintext
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dnl Available from the GNU Autoconf Macro Archive at:
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dnl http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_bool.html
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dnl
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AC_DEFUN([AC_CXX_BOOL],
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[AC_CACHE_CHECK(whether the compiler recognizes bool as a built-in type,
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ac_cv_cxx_bool,
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[AC_LANG_SAVE
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AC_LANG_CPLUSPLUS
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AC_TRY_COMPILE([
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int f(int x){return 1;}
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int f(char x){return 1;}
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int f(bool x){return 1;}
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],[bool b = true; return f(b);],
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ac_cv_cxx_bool=yes, ac_cv_cxx_bool=no)
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AC_LANG_RESTORE
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])
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if test "$ac_cv_cxx_bool" = yes; then
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AC_DEFINE(HAVE_BOOL,,[define if bool is a built-in type])
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fi
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])
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