Add userspace config.h handling to build script (#2640)

* Add userspace 'config.h' file

* Add more robust docs

* Remove config.h code from drashna userspace

* Spelling error

* Include links to Config Options page

* Remove config.h documentation from userspace doc, as it's no longer needed

2 files changed, 0 insertions, 33 deletions

diff --git a/users/drashna/readme.md b/users/drashna/readme.md
index e3e5d399d8..c4e305e15b 100644
--- a/users/drashna/readme.md
+++ b/users/drashna/readme.md
@@ -3,33 +3,6 @@ Overview
 
 This is my personal userspace file.  Most of my code exists here, as it's heavily shared. 
 
-Userspace Config.h
-------------------
-
-By default, the userspace feature doesn't include a `config.h` file the way that that keyboards, revisions, keymaps and layouts handle them.  This means that if you want global configurations via userspace, it's very difficult to implement.  
-
-The reason for using seperate files here is that the `drashna.h` file doesn't get called in such a way that will actually define QMK settings.  Additionally, attempting to add it to the `config.h` files has issues. Namely, the `drashna.h` file requires the `quantum.h` file... but including this to the `config.h` attemps to redefines a bunch of settings and breaks the firmare.  Removing the `quantum.h` include means that a number of data structures no longer get added, and the `SAFE_RANGE` value is no longer defined, as well.  So we need both a `config.h` for global config, and we need a seperate h file for local settings. 
-
-However, the `rules.mk` file is included when building the firmware.  So we can hijack that process to "manually" add a `config.h`. To do so, you would need to add the following to the `rules.mk` in your userspace:
-
-```c
-ifneq ("$(wildcard users/$(KEYMAP)/config.h)","")
-    CONFIG_H += users/$(KEYMAP)/config.h
-endif
-```
-
-You can replace `$(KEYMAP)` with your name, but it's not necessary. This checks for the existence of `/users/<name>/config.h`, and if it exists, includes it like every other `config.h` file, allowing you to make global `config.h` settings. 
-
-As for the `config.h` file, you want to make sure that it has an "ifdef" in it to make sure it's only used once.  So you want something like this: 
-
-```c
-#ifndef USERSPACE_CONFIG_H
-#define USERSPACE_CONFIG_H
-
-// put stuff here 
-
-#endif
-```
 
 Custom userspace handlers
 -------------------------
diff --git a/users/drashna/rules.mk b/users/drashna/rules.mk
index 53e5da43db..062ecd3c49 100644
--- a/users/drashna/rules.mk
+++ b/users/drashna/rules.mk
@@ -2,10 +2,4 @@
 SRC += drashna.c
 EXTRAFLAGS        += -flto
 
-ifneq ("$(wildcard users/$(KEYMAP)/config.h)","")
-    CONFIG_H += users/$(KEYMAP)/config.h
-endif
 
-ifeq ($(strip $(NO_SECRETS)), yes)
-    OPT_DEFS += -DNO_SECRETS
-endif