[PATCH BlueZ v2 1/1] build: Check if explicit_bzero is missing

[Brian Gix <brian.gix@intel.com>]

This check gets around the redefinition of explicit_bzero in ELL

In file included from ell/random.c:34:0:
ell/missing.h:59:20: error: static declaration of ‘explicit_bzero’ follows non-static declaration
 static inline void explicit_bzero(void *s, size_t n)
                    ^~~~~~~~~~~~~~
In file included from ./ell/util.h:26:0,
                 from ell/private.h:26,
                 from ell/random.c:33:
/usr/include/string.h:435:13: note: previous declaration of ‘explicit_bzero’ was here
 extern void explicit_bzero (void *__s, size_t __n) __THROW __nonnull ((1));
             ^~~~~~~~~~~~~~
---
 configure.ac | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/configure.ac b/configure.ac
index ae64ddc0f..0afe1e6db 100644
--- a/configure.ac
+++ b/configure.ac
@@ -46,6 +46,8 @@ MISC_FLAGS
 AC_ARG_ENABLE(threads, AC_HELP_STRING([--enable-threads],
 		[enable threading support]), [enable_threads=${enableval}])
 
+AC_CHECK_FUNCS(explicit_bzero)
+
 AC_CHECK_FUNC(signalfd, dummy=yes,
 			AC_MSG_ERROR(signalfd support is required))
 
-- 
2.14.5