kconfig: environment symbol support

Add the possibility to import a value from the environment into kconfig
via the option syntax. Beside flexibility this has the advantage
providing proper dependencies.
Documented the options syntax.

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

1 files changed, 5 insertions, 11 deletions

diff --git a/scripts/kconfig/qconf.cc b/scripts/kconfig/qconf.cc
index 9fe27ca8a192..5d0fd38b089b 100644
--- a/scripts/kconfig/qconf.cc
+++ b/scripts/kconfig/qconf.cc
@@ -1088,7 +1088,11 @@ QString ConfigInfoView::debug_info(struct symbol *sym)
                         debug += "</a><br>";
                         break;
                 case P_DEFAULT:
-                        debug += "default: ";
+                case P_SELECT:
+                case P_RANGE:
+                case P_ENV:
+                        debug += prop_get_type_name(prop->type);
+                        debug += ": ";
                         expr_print(prop->expr, expr_print_help, &debug, E_NONE);
                         debug += "<br>";
                         break;
@@ -1099,16 +1103,6 @@ QString ConfigInfoView::debug_info(struct symbol *sym)
                                 debug += "<br>";
                         }
                         break;
-                case P_SELECT:
-                        debug += "select: ";
-                        expr_print(prop->expr, expr_print_help, &debug, E_NONE);
-                        debug += "<br>";
-                        break;
-                case P_RANGE:
-                        debug += "range: ";
-                        expr_print(prop->expr, expr_print_help, &debug, E_NONE);
-                        debug += "<br>";
-                        break;
                 default:
                         debug += "unknown property: ";
                         debug += prop_get_type_name(prop->type);