roadmap: describe glibc commands.

Some glibc commands are irrelevant because they're for functionality
that is excluded from musl (mtrace, rpc*, localedef, iconvconfig, nscd).
getconf and catchsegv look like candidates for the development toolchain;
locale and iconv were already triaged.
getent is pretty lame, but it and the timezone stuff (tzselect zic
zdump) are the only new possibly interesting commands.

1 files changed, 42 insertions, 14 deletions

diff --git a/toys/other/hello.c b/toys/other/hello.c
index eb80972e..b909ed53 100644
--- a/toys/other/hello.c
+++ b/toys/other/hello.c
@@ -8,17 +8,28 @@
 // Accept many different kinds of command line argument:
 
 USE_HELLO(NEWTOY(hello, "(walrus)(blubber):;(also):e@d*c#b:a", TOYFLAG_USR|TOYFLAG_BIN))
+USE_HELLO_ALIAS(NEWTOY(hello_alias, "b:dq", TOYFLAG_USR|TOYFLAG_BIN))
 
 config HELLO
   bool "hello"
   default n
   help
-    usage: hello [-a] [-b string] [-c number] [-d list] [-e count] [...]
+    usage: hello [-a] [-b STRING] [-c NUMBER] [-d LIST] [-e COUNT] [...]
 
     A hello world program.  You don't need this.
 
     Mostly used as an example/skeleton file for adding new commands,
     occasionally nice to test kernel booting via "init=/bin/hello".
+
+config HELLO_ALIAS
+  bool "hello_alias"
+  default n
+  depends on HELLO
+  help
+    usage: hello_alias [-dq] [-b NUMBER]
+
+    Example of a second command with different arguments in the same source
+    file as the first. Allows shared infrastructure not added to lib.
 */
 
 #define FOR_hello
@@ -27,12 +38,19 @@ config HELLO
 // Hello doesn't use these globals, they're here for example/skeleton purposes.
 
 GLOBALS(
-  char *b_string;
-  long c_number;
-  struct arg_list *d_list;
-  long e_count;
-  char *also_string;
-  char *blubber_string;
+  union {
+    struct {
+      char *b_string;
+      long c_number;
+      struct arg_list *d_list;
+      long e_count;
+      char *also_string;
+      char *blubber_string;
+    } h;
+    struct {
+      long b_number;
+    } a;
+  };
 
   int more_globals;
 )
@@ -47,15 +65,25 @@ void hello_main(void)
 
   if (toys.optflags) printf("flags=%x\n", toys.optflags);
   if (toys.optflags & FLAG_a) printf("Saw a\n");
-  if (toys.optflags & FLAG_b) printf("b=%s\n", TT.b_string);
-  if (toys.optflags & FLAG_c) printf("c=%ld\n", TT.c_number);
-  while (TT.d_list) {
-    printf("d=%s\n", TT.d_list->arg);
-    TT.d_list = TT.d_list->next;
+  if (toys.optflags & FLAG_b) printf("b=%s\n", TT.h.b_string);
+  if (toys.optflags & FLAG_c) printf("c=%ld\n", TT.h.c_number);
+  while (TT.h.d_list) {
+    printf("d=%s\n", TT.h.d_list->arg);
+    TT.h.d_list = TT.h.d_list->next;
   }
-  if (TT.e_count) printf("e was seen %ld times\n", TT.e_count);
+  if (TT.h.e_count) printf("e was seen %ld times\n", TT.h.e_count);
   for (optargs = toys.optargs; *optargs; optargs++)
     printf("optarg=%s\n", *optargs);
   if (toys.optflags & FLAG_walrus) printf("Saw --walrus\n");
-  if (TT.blubber_string) printf("--blubber=%s\n", TT.blubber_string);
+  if (TT.h.blubber_string) printf("--blubber=%s\n", TT.h.blubber_string);
+}
+
+#define CLEANUP_hello
+#define FOR_hello_alias
+#include "generated/flags.h"
+
+void hello_alias_main(void)
+{
+  printf("hello world %x\n", toys.optflags);
+  if (toys.optflags & FLAG_b) printf("b=%ld", TT.a.b_number);
 }