- gl_CHECK_NEXT_HEADERS([stdlib.h])
- AC_CHECK_HEADERS([random.h], [], [], [AC_INCLUDES_DEFAULT])
- if test $ac_cv_header_random_h = yes; then
- HAVE_RANDOM_H=1
- else
- HAVE_RANDOM_H=0
- fi
- AC_SUBST([HAVE_RANDOM_H])
- AC_CHECK_TYPES([struct random_data],
- [], [HAVE_STRUCT_RANDOM_DATA=0],
- [[#include <stdlib.h>
- #if HAVE_RANDOM_H
- # include <random.h>
- #endif
- ]])
+ gl_NEXT_HEADERS([stdlib.h])
+
+ dnl Check for declarations of anything we want to poison if the
+ dnl corresponding gnulib module is not in use, and which is not
+ dnl guaranteed by C89.
+ gl_WARN_ON_USE_PREPARE([[#include <stdlib.h>
+#if HAVE_SYS_LOADAVG_H
+# include <sys/loadavg.h>
+#endif
+#if HAVE_RANDOM_H
+# include <random.h>
+#endif
+ ]], [_Exit atoll canonicalize_file_name getloadavg getsubopt grantpt
+ initstate_r mkdtemp mkostemp mkostemps mkstemp mkstemps posix_openpt
+ ptsname ptsname_r random_r realpath rpmatch setenv setstate_r srandom_r
+ strtod strtoll strtoull unlockpt unsetenv])