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-rw-r--r--configure.ac3
1 files changed, 3 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index a4694df27a..cb670a2a14 100644
--- a/configure.ac
+++ b/configure.ac
@@ -966,6 +966,9 @@ AC_CHECK_HEADERS([sys/cpuset.h], [], [],
#endif
]])
+dnl ** check whether a declaration for `environ` is provided by libc.
+FP_CHECK_ENVIRON
+
dnl ** check if it is safe to include both <time.h> and <sys/time.h>
AC_HEADER_TIME