lua

commit d69789da1ccfa4db7c241de6b471d6b729f1561e
parent 314745ed8438d1276c6c928d5f9d4be018dfadb6
Author: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date:   Tue, 24 Jan 2023 15:03:50 -0300

Fix absence of 'system' in iOS

Despite claiming to be ISO, the C library in some Apple platforms
does not implement 'system'.

Diffstat:
M
loslib.c
 | 
18
+++++++++++++++++-

1 file changed, 17 insertions(+), 1 deletion(-)
diff --git a/loslib.c b/loslib.c
@@ -138,12 +138,28 @@
 /* }================================================================== */
 
 
+/*
+** Despite claiming to be ISO, the C library in some Apple platforms
+** does not implement 'system'.
+*/
+#if !defined(l_system) && defined(__APPLE__)	/* { */
+#include "TargetConditionals.h"
+#if TARGET_OS_IOS || TARGET_OS_WATCH || TARGET_OS_TV
+#define l_system(cmd) ((cmd) == NULL ? 0 : -1)
+#endif
+#endif						/* } */
+
+#if !defined(l_system)
+#define l_system(cmd)	system(cmd)  /* default definition */
+#endif
+
+
 
 static int os_execute (lua_State *L) {
   const char *cmd = luaL_optstring(L, 1, NULL);
   int stat;
   errno = 0;
-  stat = system(cmd);
+  stat = l_system(cmd);
   if (cmd != NULL)
     return luaL_execresult(L, stat);
   else {