bpo-11063: Use more reliable way to check if uuid function exists (GH-4343)

berkerpeksag · web-flow · commit 0e163d2ced28 · 2017-11-09T00:43:14.000+03:00
diff --git a/configure b/configure
@@ -9522,8 +9522,7 @@ main ()
 {
 
 #ifndef uuid_generate_time_safe
-uuid_t out;
-uuid_generate_time_safe(out);
+void *x = uuid_generate_time_safe
 #endif
 
   ;
diff --git a/configure.ac b/configure.ac
@@ -2680,8 +2680,7 @@ AC_CHECK_LIB(dld, shl_load)	# Dynamic linking for HP-UX
 AC_MSG_CHECKING(for uuid_generate_time_safe)
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <uuid/uuid.h>]], [[
 #ifndef uuid_generate_time_safe
-uuid_t out;
-uuid_generate_time_safe(out);
+void *x = uuid_generate_time_safe
 #endif
 ]])],
   [AC_DEFINE(HAVE_UUID_GENERATE_TIME_SAFE, 1, Define if uuid_generate_time_safe() exists.)

Original file line number	Diff line number	Diff line change
`@@ -9522,8 +9522,7 @@ main ()`
`9522`	`9522`	`{`
`9523`	`9523`
`9524`	`9524`	`#ifndef uuid_generate_time_safe`
`9525`		`-uuid_t out;`
`9526`		`-uuid_generate_time_safe(out);`
	`9525`	`+void *x = uuid_generate_time_safe`
`9527`	`9526`	`#endif`
`9528`	`9527`
`9529`	`9528`	`;`