llvm/autoconf/m4/cxx_flag_check.m4

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AC_DEFUN([CXX_FLAG_CHECK],
  [AC_SUBST($1, `$CXX $2 -fsyntax-only -xc /dev/null 2>/dev/null && echo $2`)])
Add an autoconf test to check for optional compiler flags like -Wno-missing-field-initializers or -Wno-variadic-macros. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85147 91177308-0d34-0410-b5e6-96231b3b80d8 2009-10-26 19:58:44 +00:00			`AC_DEFUN([CXX_FLAG_CHECK],`
			[AC_SUBST($1, `$CXX $2 -fsyntax-only -xc /dev/null 2>/dev/null && echo $2`)])