Make RTL8187 driver an add-on

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3390 42af7a65-404d-4744-a932-0658087f49c3

configs/olimex-lpc1766stk/wlan/defconfig

@@ -816,7 +816,7 @@ CONFIG_EXAMPLES_NSH_DISABLEBG=n
 CONFIG_EXAMPLES_NSH_ROMFSETC=n
 CONFIG_EXAMPLES_NSH_CONSOLE=y
 CONFIG_EXAMPLES_NSH_TELNET=n
-CONFIG_EXAMPLES_NSH_ARCHINIT=y
+CONFIG_EXAMPLES_NSH_ARCHINIT=n
 CONFIG_EXAMPLES_NSH_IOBUFFER_SIZE=512
 CONFIG_EXAMPLES_NSH_DHCPC=n
 CONFIG_EXAMPLES_NSH_NOMAC=n

configs/qemu-i486/README.txt

@@ -14,6 +14,7 @@ Contents
   * Toolchains
     - Cygwin Buildroot Toolchain
     - Buildroot Instructions
+  * FAQ
   * Configurations
     - ostest
     - nsh
@@ -22,7 +23,7 @@ QEMU
 ====
 
 QEMU is a generic and open source machine emulator and virtualizer.  Here are
-some links (which are mostly outdated by the time your read this):
+some links (which will probably be mostly outdated by the time your read this):
 
   Home Page:     http://wiki.qemu.org/Main_Page
   Downloads:     http://wiki.qemu.org/Download
@@ -34,7 +35,7 @@ Building QEMU
 
   tar zxf qemu-0.14.0.tar.gz 
   cd qemu-0.14.0
-  ./configure
+  ./configure --target-list=i386-softmmu
   make
   make install
 
@@ -62,8 +63,8 @@ Cygwin Build Problems
     2. Try building QEMU with MingGW (I understand that this is difficult).
 
   NOTE: As of this writing, I have not been successful getting ANY pre-built
-  version of QEMU to work successful; they all fail immediately with
-  initialization errors.
+  version of QEMU to work successfully with WinXP.  The same binaries work
+  fine on Vista, however.
 
 Running QEMU
 ------------
@@ -72,6 +73,13 @@ Running QEMU
 
     qemu -cpu 486 -m 2 -kernel nuttx.elf -nographic
 
+  The -nographic option redirects COM1 to your console.  However, the -nographic
+  option does not work under Cygwin.  For simple testing under Cygwin, I use
+  
+    qemu -cpu 486 -m 2 -kernel nuttx.elf -serial file:test.txt
+
+  which will send COM1 output to the file test.txt.
+ 
 Toolchains
 ==========
 
@@ -125,6 +133,12 @@ Buildroot Instructions
   detailed PLUS some special instructions that you will need to follow if you
   run into problems building the toolchain for Cygwin under Windows.
 
+FAQ
+===
+
+Q: I get the following error message, "undefined reference to '__stack_chk_fail'"
+A: Add -fno-stack-protector to ARCHCPUFLAGS in you Make.defs file.
+
 Configurations
 ==============