Ticket #2206: avoid-PATH_MAX.patch

tools/jam/src/pwd.c

@@ -2 +2 @@
 /* Software License, Version 1.0. (See accompanying */
 /* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) */
 
+/* Define _GNU_SOURCE to expose get_current_dir_name() */
+#define _GNU_SOURCE
+
 #include "jam.h"
 #include "lists.h"
 #include "newstr.h"
@@ -24 +27 @@
 /* The current directory can't change in bjam, so optimize this to cache
 ** the result.
 */
+#ifndef __GLIBC__
 static char pwd_buffer[PATH_MAX];
+#endif
 static char * pwd_result = NULL;
 
 
@@ -33 +38 @@
 {
     if (!pwd_result)
     {
+#ifdef __GLIBC__
+        if ((pwd_result = get_current_dir_name()) == NULL)
+#else
         if (getcwd(pwd_buffer, sizeof(pwd_buffer)) == NULL)
+#endif
         {
             perror("can not get current directory");
             return L0;
         }
+#ifndef __GLIBC__
         else
         {
 #ifdef NT
@@ -46 +56 @@
             pwd_result = newstr(pwd_buffer);
 #endif
         }
+#endif
     }
     return list_new(L0, pwd_result);
 }