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dnl PR_CHECK_CC_OPT
dnl ---------------------
dnl Check whether the C compiler accepts the given option
AC_DEFUN([PR_CHECK_CC_OPT]
[AC_MSG_CHECKING([whether ${CC-cc} accepts -[$1]])
echo 'void f(){}' > conftest.c
if test -z "`${CC-cc} -c -$1 conftest.c 2>&1`"; then
AC_MSG_RESULT(yes)
CFLAGS="$CFLAGS -$1"
else
AC_MSG_RESULT(no)
fi
rm -f conftest*
])