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17 lines
546 B
Text
17 lines
546 B
Text
# C++ checks to determine what style of headers to use and
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# whether to use "using" clauses.
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AC_DEFUN(AC_CXX_HAVE_STDHEADERS, [
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AC_SUBST(cxx_have_stdheaders)
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AC_CACHE_CHECK([whether C++ supports the ISO C++ standard includes],
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db_cv_cxx_have_stdheaders,
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[AC_LANG_SAVE
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AC_LANG_CPLUSPLUS
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AC_TRY_COMPILE([#include <iostream>
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],[std::ostream *o; return 0;],
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db_cv_cxx_have_stdheaders=yes, db_cv_cxx_have_stdheaders=no)
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AC_LANG_RESTORE
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])
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if test "$db_cv_cxx_have_stdheaders" = yes; then
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cxx_have_stdheaders="#define HAVE_CXX_STDHEADERS 1"
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fi])
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