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diff --git a/builtin-gc.c b/builtin-gc.c
--- a/builtin-gc.c
+++ /dev/null
@@ -1,255 +0,0 @@
-/*
- * git gc builtin command
- *
- * Cleanup unreachable files and optimize the repository.
- *
- * Copyright (c) 2007 James Bowes
- *
- * Based on git-gc.sh, which is
- *
- * Copyright (c) 2006 Shawn O. Pearce
- */
-
-#include "builtin.h"
-#include "cache.h"
-#include "parse-options.h"
-#include "run-command.h"
-
-#define FAILED_RUN "failed to run %s"
-
-static const char * const builtin_gc_usage[] = {
- "git gc [options]",
- NULL
-};
-
-static int pack_refs = 1;
-static int aggressive_window = 250;
-static int gc_auto_threshold = 6700;
-static int gc_auto_pack_limit = 50;
-static const char *prune_expire = "2.weeks.ago";
-
-#define MAX_ADD 10
-static const char *argv_pack_refs[] = {"pack-refs", "--all", "--prune", NULL};
-static const char *argv_reflog[] = {"reflog", "expire", "--all", NULL};
-static const char *argv_repack[MAX_ADD] = {"repack", "-d", "-l", NULL};
-static const char *argv_prune[] = {"prune", "--expire", NULL, NULL};
-static const char *argv_rerere[] = {"rerere", "gc", NULL};
-
-static int gc_config(const char *var, const char *value, void *cb)
-{
- if (!strcmp(var, "gc.packrefs")) {
- if (value && !strcmp(value, "notbare"))
- pack_refs = -1;
- else
- pack_refs = git_config_bool(var, value);
- return 0;
- }
- if (!strcmp(var, "gc.aggressivewindow")) {
- aggressive_window = git_config_int(var, value);
- return 0;
- }
- if (!strcmp(var, "gc.auto")) {
- gc_auto_threshold = git_config_int(var, value);
- return 0;
- }
- if (!strcmp(var, "gc.autopacklimit")) {
- gc_auto_pack_limit = git_config_int(var, value);
- return 0;
- }
- if (!strcmp(var, "gc.pruneexpire")) {
- if (value && strcmp(value, "now")) {
- unsigned long now = approxidate("now");
- if (approxidate(value) >= now)
- return error("Invalid %s: '%s'", var, value);
- }
- return git_config_string(&prune_expire, var, value);
- }
- return git_default_config(var, value, cb);
-}
-
-static void append_option(const char **cmd, const char *opt, int max_length)
-{
- int i;
-
- for (i = 0; cmd[i]; i++)
- ;
-
- if (i + 2 >= max_length)
- die("Too many options specified");
- cmd[i++] = opt;
- cmd[i] = NULL;
-}
-
-static int too_many_loose_objects(void)
-{
- /*
- * Quickly check if a "gc" is needed, by estimating how
- * many loose objects there are. Because SHA-1 is evenly
- * distributed, we can check only one and get a reasonable
- * estimate.
- */
- char path[PATH_MAX];
- const char *objdir = get_object_directory();
- DIR *dir;
- struct dirent *ent;
- int auto_threshold;
- int num_loose = 0;
- int needed = 0;
-
- if (gc_auto_threshold <= 0)
- return 0;
-
- if (sizeof(path) <= snprintf(path, sizeof(path), "%s/17", objdir)) {
- warning("insanely long object directory %.*s", 50, objdir);
- return 0;
- }
- dir = opendir(path);
- if (!dir)
- return 0;
-
- auto_threshold = (gc_auto_threshold + 255) / 256;
- while ((ent = readdir(dir)) != NULL) {
- if (strspn(ent->d_name, "0123456789abcdef") != 38 ||
- ent->d_name[38] != '\0')
- continue;
- if (++num_loose > auto_threshold) {
- needed = 1;
- break;
- }
- }
- closedir(dir);
- return needed;
-}
-
-static int too_many_packs(void)
-{
- struct packed_git *p;
- int cnt;
-
- if (gc_auto_pack_limit <= 0)
- return 0;
-
- prepare_packed_git();
- for (cnt = 0, p = packed_git; p; p = p->next) {
- if (!p->pack_local)
- continue;
- if (p->pack_keep)
- continue;
- /*
- * Perhaps check the size of the pack and count only
- * very small ones here?
- */
- cnt++;
- }
- return gc_auto_pack_limit <= cnt;
-}
-
-static int need_to_gc(void)
-{
- /*
- * Setting gc.auto to 0 or negative can disable the
- * automatic gc.
- */
- if (gc_auto_threshold <= 0)
- return 0;
-
- /*
- * If there are too many loose objects, but not too many
- * packs, we run "repack -d -l". If there are too many packs,
- * we run "repack -A -d -l". Otherwise we tell the caller
- * there is no need.
- */
- if (too_many_packs())
- append_option(argv_repack,
- prune_expire && !strcmp(prune_expire, "now") ?
- "-a" : "-A",
- MAX_ADD);
- else if (!too_many_loose_objects())
- return 0;
-
- if (run_hook(NULL, "pre-auto-gc", NULL))
- return 0;
- return 1;
-}
-
-int cmd_gc(int argc, const char **argv, const char *prefix)
-{
- int aggressive = 0;
- int auto_gc = 0;
- int quiet = 0;
- char buf[80];
-
- struct option builtin_gc_options[] = {
- OPT__QUIET(&quiet),
- { OPTION_STRING, 0, "prune", &prune_expire, "date",
- "prune unreferenced objects",
- PARSE_OPT_OPTARG, NULL, (intptr_t)prune_expire },
- OPT_BOOLEAN(0, "aggressive", &aggressive, "be more thorough (increased runtime)"),
- OPT_BOOLEAN(0, "auto", &auto_gc, "enable auto-gc mode"),
- OPT_END()
- };
-
- git_config(gc_config, NULL);
-
- if (pack_refs < 0)
- pack_refs = !is_bare_repository();
-
- argc = parse_options(argc, argv, prefix, builtin_gc_options,
- builtin_gc_usage, 0);
- if (argc > 0)
- usage_with_options(builtin_gc_usage, builtin_gc_options);
-
- if (aggressive) {
- append_option(argv_repack, "-f", MAX_ADD);
- append_option(argv_repack, "--depth=250", MAX_ADD);
- if (aggressive_window > 0) {
- sprintf(buf, "--window=%d", aggressive_window);
- append_option(argv_repack, buf, MAX_ADD);
- }
- }
- if (quiet)
- append_option(argv_repack, "-q", MAX_ADD);
-
- if (auto_gc) {
- /*
- * Auto-gc should be least intrusive as possible.
- */
- if (!need_to_gc())
- return 0;
- fprintf(stderr,
- "Auto packing the repository for optimum performance.%s\n",
- quiet
- ? ""
- : (" You may also\n"
- "run \"git gc\" manually. See "
- "\"git help gc\" for more information."));
- } else
- append_option(argv_repack,
- prune_expire && !strcmp(prune_expire, "now")
- ? "-a" : "-A",
- MAX_ADD);
-
- if (pack_refs && run_command_v_opt(argv_pack_refs, RUN_GIT_CMD))
- return error(FAILED_RUN, argv_pack_refs[0]);
-
- if (run_command_v_opt(argv_reflog, RUN_GIT_CMD))
- return error(FAILED_RUN, argv_reflog[0]);
-
- if (run_command_v_opt(argv_repack, RUN_GIT_CMD))
- return error(FAILED_RUN, argv_repack[0]);
-
- if (prune_expire) {
- argv_prune[2] = prune_expire;
- if (run_command_v_opt(argv_prune, RUN_GIT_CMD))
- return error(FAILED_RUN, argv_prune[0]);
- }
-
- if (run_command_v_opt(argv_rerere, RUN_GIT_CMD))
- return error(FAILED_RUN, argv_rerere[0]);
-
- if (auto_gc && too_many_loose_objects())
- warning("There are too many unreachable loose objects; "
- "run 'git prune' to remove them.");
-
- return 0;
-}