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Imported Upstream version 1.0.0+dfsg1
[rustc.git] / src / llvm / autoconf / m4 / cxx_flag_check.m4
1 AC_DEFUN([CXX_FLAG_CHECK],
2 [AC_SUBST($1, `$CXX -Werror patsubst($2, [^-Wno-], [-W]) -fsyntax-only -xc /dev/null 2>/dev/null && echo $2`)])
backport for Debian buster