mirror of
https://github.com/motioneye-project/motioneyeos.git
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- thinking loud about auto-generating dependencies for make(1)
Don't use this, it doesn't work yet. Thoughs welcome.
Like: We should probably use the sym->text and not fiddle with the name since
the name looses information ('_' != '-' in host-fakeroot). This would not
be too robust, i fear, since the name can contain additional, arbitrary info.
Also, the real 'depends' are a little bit ugly in kconfig. There doesn't seem
to be a nice property that holds reverse deps that are only contain selected
symbols.
Thoughts?
This commit is contained in:
Bernhard Reutner-Fischer
parent
28f5ba7f39
commit
28a36b609a
@ -1303,3 +1303,127 @@ diff -rdup kernel-config/zconf.y config/zconf.y
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return name ? name : ".config";
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return name ? name : ".config";
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}
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}
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Index: util.c
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===================================================================
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--- kernel-config/util.c (revision 19969)
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+++ config/util.c (working copy)
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@@ -26,6 +26,109 @@ struct file *file_lookup(const char *nam
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return file;
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}
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+static char* br2_symbol_printer(const char * const in)
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+{
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+ ssize_t i, j, len = strlen(in);
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+ char *ret;
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+ if (len < 1)
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+ return NULL;
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+ ret = malloc(len);
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+ if (!ret) {
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+ printf("Out of memory!");
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+ exit(1);
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+ }
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+ memset(ret, 0, len);
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+ i = j = 0;
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+ if (strncmp("BR2_", in, 4) == 0)
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+ i += 4;
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+ if (strncmp("PACKAGE_", in + i, 8) == 0)
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+ i += 8;
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+ else if (strncmp("TARGET_", in + i, 7) == 0)
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+ i += 7;
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+ while (i <= len)
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+ ret[j++] = tolower(in[i++]);
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+ return ret;
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+}
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+
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+/* write dependencies of the infividual config-symbols */
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+static int write_make_deps(const char *name)
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+{
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+ struct menu *menu;
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+ struct symbol *sym;
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+ struct property *prop, *p;
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+ unsigned done;
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+ const char * const name_tmp = "..make.deps.tmp";
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+ FILE *out;
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+ if (!name)
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+ name = ".auto.deps";
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+ out = fopen(name_tmp, "w");
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+ if (!out)
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+ return 1;
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+ fprintf(out, "# ATTENTION! This does not handle 'depends', just 'select'! \n"
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+ "# See package/config/util.c write_make_deps()\n#\n");
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+ menu = &rootmenu;//rootmenu.list;
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+ while (menu) {
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+ sym = menu->sym;
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+ if (!sym) {
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+ if (!menu_is_visible(menu))
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+ goto next;
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+ } else if (!(sym->flags & SYMBOL_CHOICE)) {
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+ sym_calc_value(sym);
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+ if (sym->type == S_BOOLEAN
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+ && sym_get_tristate_value(sym) != no) {
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+ done = 0;
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+ for_all_prompts(sym, prop) {
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+ struct expr *e;
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+//printf("\nname=%s\n", sym->name);
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+ for_all_properties(sym, p, P_SELECT) {
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+ e = p->expr;
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+ if (e && e->left.sym->name) {
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+ if (!done) {
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+ fprintf(out, "%s:", br2_symbol_printer(sym->name));
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+ done = 1;
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+ }
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+//printf("SELECTS %s\n",e->left.sym->name);
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+ fprintf(out, " %s",br2_symbol_printer(e->left.sym->name));
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+ }
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+ }
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+ if (done)
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+ fprintf(out, "\n");
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+#if 0
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+ e = sym->rev_dep.expr;
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+ if (e && e->type == E_SYMBOL
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+ && e->left.sym->name) {
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+ fprintf(out, "%s: %s", br2_symbol_printer(e->left.sym->name),
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+ br2_symbol_printer(sym->name));
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+printf("%s is Selected BY: %s", sym->name, e->left.sym->name);
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+ }
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+#endif
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+ }
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+ }
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+ }
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+next:
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+ if (menu->list) {
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+ menu = menu->list;
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+ continue;
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+ }
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+ if (menu->next)
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+ menu = menu->next;
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+ else while ((menu = menu->parent)) {
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+ if (menu->next) {
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+ menu = menu->next;
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+ break;
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+ }
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+ }
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+ }
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+ fclose(out);
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+ rename(name_tmp, name);
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+ printf(_("#\n"
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+ "# make dependencies written to %s\n"
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+ "# ATTENTION buildroot devels!\n"
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+ "# See top of this file before playing with this auto-preprequisites!\n"
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+ "#\n"), name);
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+ return 0;
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+}
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+
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/* write a dependency file as used by kbuild to track dependencies */
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int file_write_dep(const char *name)
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{
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@@ -49,7 +152,8 @@ int file_write_dep(const char *name)
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"$(deps_config): ;\n");
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fclose(out);
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rename("..config.tmp", name);
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- return 0;
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+
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+ return write_make_deps(NULL);
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}
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@ -26,6 +26,109 @@ struct file *file_lookup(const char *name)
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return file;
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return file;
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}
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}
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static char* br2_symbol_printer(const char * const in)
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{
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ssize_t i, j, len = strlen(in);
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char *ret;
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if (len < 1)
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return NULL;
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ret = malloc(len);
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if (!ret) {
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printf("Out of memory!");
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exit(1);
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}
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memset(ret, 0, len);
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i = j = 0;
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if (strncmp("BR2_", in, 4) == 0)
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i += 4;
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if (strncmp("PACKAGE_", in + i, 8) == 0)
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i += 8;
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else if (strncmp("TARGET_", in + i, 7) == 0)
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i += 7;
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while (i <= len)
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ret[j++] = tolower(in[i++]);
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return ret;
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}
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/* write dependencies of the infividual config-symbols */
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static int write_make_deps(const char *name)
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{
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struct menu *menu;
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struct symbol *sym;
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struct property *prop, *p;
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unsigned done;
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const char * const name_tmp = "..make.deps.tmp";
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FILE *out;
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if (!name)
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name = ".auto.deps";
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out = fopen(name_tmp, "w");
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if (!out)
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return 1;
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fprintf(out, "# ATTENTION! This does not handle 'depends', just 'select'! \n"
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"# See package/config/util.c write_make_deps()\n#\n");
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menu = &rootmenu;//rootmenu.list;
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while (menu) {
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sym = menu->sym;
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if (!sym) {
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if (!menu_is_visible(menu))
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goto next;
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} else if (!(sym->flags & SYMBOL_CHOICE)) {
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sym_calc_value(sym);
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if (sym->type == S_BOOLEAN
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&& sym_get_tristate_value(sym) != no) {
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done = 0;
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for_all_prompts(sym, prop) {
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struct expr *e;
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//printf("\nname=%s\n", sym->name);
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for_all_properties(sym, p, P_SELECT) {
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e = p->expr;
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if (e && e->left.sym->name) {
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if (!done) {
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fprintf(out, "%s:", br2_symbol_printer(sym->name));
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done = 1;
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}
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//printf("SELECTS %s\n",e->left.sym->name);
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fprintf(out, " %s",br2_symbol_printer(e->left.sym->name));
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}
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}
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if (done)
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fprintf(out, "\n");
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#if 0
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e = sym->rev_dep.expr;
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if (e && e->type == E_SYMBOL
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&& e->left.sym->name) {
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fprintf(out, "%s: %s", br2_symbol_printer(e->left.sym->name),
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br2_symbol_printer(sym->name));
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printf("%s is Selected BY: %s", sym->name, e->left.sym->name);
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}
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#endif
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}
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}
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}
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next:
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if (menu->list) {
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menu = menu->list;
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continue;
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}
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if (menu->next)
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menu = menu->next;
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else while ((menu = menu->parent)) {
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if (menu->next) {
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menu = menu->next;
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break;
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}
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}
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}
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fclose(out);
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rename(name_tmp, name);
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printf(_("#\n"
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"# make dependencies written to %s\n"
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"# ATTENTION buildroot devels!\n"
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"# See top of this file before playing with this auto-preprequisites!\n"
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"#\n"), name);
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return 0;
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}
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/* write a dependency file as used by kbuild to track dependencies */
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/* write a dependency file as used by kbuild to track dependencies */
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int file_write_dep(const char *name)
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int file_write_dep(const char *name)
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{
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{
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@ -49,7 +152,8 @@ int file_write_dep(const char *name)
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"$(deps_config): ;\n");
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"$(deps_config): ;\n");
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fclose(out);
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fclose(out);
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rename("..config.tmp", name);
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rename("..config.tmp", name);
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return 0;
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return write_make_deps(NULL);
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}
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}
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