Fix compilation if RTLD_NEXT is not defined.

diff --git a/src/env_hooks.c b/src/env_hooks.c
index 1dcef3dce6a9dc5244b0f8534858e351d2d3b4fb..5b60471c56f95841705da2f79044021d7a5c8fd5 100644 (file)
--- a/src/env_hooks.c
+++ b/src/env_hooks.c
@@ -78,13 +78,13 @@ getenv(const char *name)
        case SUDO_HOOK_RET_ERROR:
            return NULL;
        default: {
-#if defined(HAVE_DLOPEN)
+#if defined(HAVE_DLOPEN) && defined(RTLD_NEXT)
            char * (*fn)(const char *);
 
            fn = dlsym(RTLD_NEXT, "getenv");
            if (fn != NULL)
                return fn(name);
-#endif /* HAVE_DLOPEN */
+#endif /* HAVE_DLOPEN && RTLD_NEXT */
            return rpl_getenv(name);
        }
     }
@@ -141,13 +141,13 @@ putenv(PUTENV_CONST char *string)
        case SUDO_HOOK_RET_ERROR:
            return -1;
        default: {
-#if defined(HAVE_DLOPEN)
+#if defined(HAVE_DLOPEN) && defined(RTLD_NEXT)
            int (*fn)(PUTENV_CONST char *);
 
            fn = dlsym(RTLD_NEXT, "putenv");
            if (fn != NULL)
                return fn(string);
-#endif /* HAVE_DLOPEN */
+#endif /* HAVE_DLOPEN && RTLD_NEXT */
            return rpl_putenv(string);
        }
     }
@@ -204,13 +204,13 @@ setenv(const char *var, const char *val, int overwrite)
        case SUDO_HOOK_RET_ERROR:
            return -1;
        default: {
-#if defined(HAVE_SETENV) && defined(HAVE_DLOPEN)
+#if defined(HAVE_SETENV) && defined(HAVE_DLOPEN) && defined(RTLD_NEXT)
            int (*fn)(const char *, const char *, int);
 
            fn = dlsym(RTLD_NEXT, "setenv");
            if (fn != NULL)
                return fn(var, val, overwrite);
-#endif /* HAVE_SETENV && HAVE_DLOPEN */
+#endif /* HAVE_SETENV && HAVE_DLOPEN && RTLD_NEXT */
            return rpl_setenv(var, val, overwrite);
        }
     }
@@ -262,14 +262,14 @@ unsetenv(const char *var)
        case SUDO_HOOK_RET_ERROR:
            return -1;
        default: {
-#if defined(HAVE_UNSETENV) && defined(HAVE_DLOPEN)
+#if defined(HAVE_UNSETENV) && defined(HAVE_DLOPEN) && defined(RTLD_NEXT)
            void (*fn)(const char *);
 
            fn = dlsym(RTLD_NEXT, "unsetenv");
            if (fn != NULL)
                fn(var);
            else
-#endif /* HAVE_UNSETENV && HAVE_DLOPEN */
+#endif /* HAVE_UNSETENV && HAVE_DLOPEN && RTLD_NEXT */
                rpl_unsetenv(var);
        }
     }
@@ -284,13 +284,13 @@ unsetenv(const char *var)
        case SUDO_HOOK_RET_ERROR:
            return -1;
        default: {
-#if defined(HAVE_UNSETENV) && defined(HAVE_DLOPEN)
+#if defined(HAVE_UNSETENV) && defined(HAVE_DLOPEN) && defined(RTLD_NEXT)
            int (*fn)(const char *);
 
            fn = dlsym(RTLD_NEXT, "unsetenv");
            if (fn != NULL)
                return fn(var);
-#endif /* HAVE_UNSETENV && HAVE_DLOPEN */
+#endif /* HAVE_UNSETENV && HAVE_DLOPEN && RTLD_NEXT */
            return rpl_unsetenv(var);
        }
     }