AC_CACHE_CHECK([whether link(2) follows symlinks],
jm_ac_cv_func_link_follows_symlink,
[
+ dnl poor-man's AC_REQUIRE: FIXME: repair this once autoconf-3 provides
+ dnl the appropriate framework.
+ test -z "$ac_cv_header_unistd_h" \
+ && AC_CHECK_HEADERS(unistd.h)
+
# Create a regular file.
echo > conftest.file
AC_TRY_RUN(