check for sysctl before we use it

Not all C libraries under Linux support the sysctl() func.
thinkinnight · Dec 8, 2011 · 358c745 · 358c745
1 parent 1927776
commit 358c745
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/arc4random.c b/arc4random.c
@@ -166,7 +166,7 @@ arc4_seed_win32(void)
 }
 #endif
 
-#if defined(_EVENT_HAVE_SYS_SYSCTL_H)
+#if defined(_EVENT_HAVE_SYS_SYSCTL_H) && defined(_EVENT_HAVE_SYSCTL)
 #if _EVENT_HAVE_DECL_CTL_KERN && _EVENT_HAVE_DECL_KERN_RANDOM && _EVENT_HAVE_DECL_RANDOM_UUID
 #define TRY_SEED_SYSCTL_LINUX
 static int

diff --git a/configure.in b/configure.in
@@ -267,7 +267,7 @@ AC_HEADER_TIME
 
 dnl Checks for library functions.
 AC_CHECK_FUNCS([gettimeofday vasprintf fcntl clock_gettime strtok_r strsep])
-AC_CHECK_FUNCS([getnameinfo strlcpy inet_ntop inet_pton signal sigaction strtoll inet_aton pipe eventfd sendfile mmap splice arc4random arc4random_buf issetugid geteuid getegid getprotobynumber setenv unsetenv putenv])
+AC_CHECK_FUNCS([getnameinfo strlcpy inet_ntop inet_pton signal sigaction strtoll inet_aton pipe eventfd sendfile mmap splice arc4random arc4random_buf issetugid geteuid getegid getprotobynumber setenv unsetenv putenv sysctl])
 
 AC_CACHE_CHECK(
     [for getaddrinfo],