use gnulib's progname module

* bootstrap.conf (gnulib_modules): Add progname.
* src/*.c (program_name): Remove declaration.
* (main): Call set_program_name rather than setting program_name.
* src/nice.c (main): Cast program_name to "(char *)".
* src/prog-fprintf.c: Include "system.h"
* src/system.h: Include "progname.h".
* maint.mk (sc_program_name): Adjust rule.
Suggestion from Eric Blake.

1 files changed, 1 insertions, 4 deletions

diff --git a/src/rm.c b/src/rm.c
index eb90bf2cd..7304330c8 100644
--- a/src/rm.c
+++ b/src/rm.c
@@ -66,9 +66,6 @@
   proper_name ("Richard M. Stallman"), \
   proper_name ("Jim Meyering")
 
-/* Name this program was run with.  */
-char const *program_name;
-
 /* For long options that have no equivalent short option, use a
    non-character as a pseudo short option, starting with CHAR_MAX + 1.  */
 enum
@@ -236,7 +233,7 @@ main (int argc, char **argv)
   int c;
 
   initialize_main (&argc, &argv);
-  program_name = argv[0];
+  set_program_name (argv[0]);
   setlocale (LC_ALL, "");
   bindtextdomain (PACKAGE, LOCALEDIR);
   textdomain (PACKAGE);