mkvtoolnix/ac/ax_boost_check_headers.m4

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AC_DEFUN([AX_BOOST_CHECK_HEADERS],[
CPPFLAGS_SAVED="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
export CPPFLAGS
LDFLAGS_SAVED="$LDFLAGS"
LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"
export LDFLAGS
AC_LANG_PUSH(C++)
AC_CHECK_HEADERS([$1],[$2],[$3],[$4])
AC_LANG_POP()
CPPFLAGS="$CPPFLAGS_SAVED"
LDFLAGS="$LDFLAGS_SAVED"
])