Configure: Improve the d_prctl_set_name detection for Android

On some versions of Android (e.g., 4.2.2, API level 17)
the header that defines the constants used for this test
will not work if unistd.h isn't already included.

1 files changed, 3 insertions, 0 deletions

diff --git a/Configure b/Configure
index a67a2c9f37..23b47dfc4c 100755
--- a/Configure
+++ b/Configure
@@ -16541,6 +16541,9 @@ d_prctl_set_name=$undef
 case $d_prctl in
     $define)
 	$cat >try.c <<EOM
+#ifdef __ANDROID__
+#include <unistd.h>
+#endif
 #include <sys/prctl.h>
 
 int main (int argc, char *argv[])