cmake: detect presence of getentropy

Signed-off-by: Casey Bodley <cbodley@redhat.com>

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b76c557ebba3421db28987ba78aa72f038144f65..16e86b29af589e1df0c3f9a5d72cc5c125d81447 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -154,6 +154,7 @@ CHECK_SYMBOL_EXISTS(res_nquery "resolv.h" HAVE_RES_NQUERY)
 CHECK_SYMBOL_EXISTS(F_SETPIPE_SZ "linux/fcntl.h" CEPH_HAVE_SETPIPE_SZ)
 CHECK_SYMBOL_EXISTS(__func__ "" HAVE_FUNC)
 CHECK_SYMBOL_EXISTS(__PRETTY_FUNCTION__ "" HAVE_PRETTY_FUNC)
+CHECK_SYMBOL_EXISTS(getentropy "unistd.h" HAVE_GETENTROPY)
 
 include(CheckCXXSourceCompiles)
 CHECK_CXX_SOURCE_COMPILES("

diff --git a/src/include/config-h.in.cmake b/src/include/config-h.in.cmake
index 2847ceea2a8e2a21190a2572eb1b755b249f0bd5..f97157a5123257fd0182c7e3c3ae46b03bbd4190 100644 (file)
--- a/src/include/config-h.in.cmake
+++ b/src/include/config-h.in.cmake
@@ -321,4 +321,7 @@
 /* Define to 1 if you have the `getprogname' function. */
 #cmakedefine HAVE_GETPROGNAME 1
 
+/* Defined if getentropy() is available */
+#cmakedefine HAVE_GETENTROPY
+
 #endif /* CONFIG_H */