Build process updated:

You have to specify `TARGET` to specify a configuration, e.g.

```
rake TARGET=host-debug all test
```

When you port `mruby` to a new configuration:
1. copy an existing configuration under `target` directory
2. modify the new configuration file
3. build using the new configuration
4. send PR if you please

1 files changed, 0 insertions, 86 deletions

diff --git a/examples/targets/build_config_chipKITMax32.rb b/examples/targets/build_config_chipKITMax32.rb
deleted file mode 100644
index 8617d8d10..000000000
--- a/examples/targets/build_config_chipKITMax32.rb
+++ /dev/null
@@ -1,86 +0,0 @@
-MRuby::Build.new do |conf|
-
-  # Gets set by the VS command prompts.
-  if ENV['VisualStudioVersion'] || ENV['VSINSTALLDIR']
-    toolchain :visualcpp
-  else
-    toolchain :gcc
-  end
-
-  enable_debug
-
-  # include the default GEMs
-  conf.gembox 'default'
-
-end
-
-# Cross Compiling configuration for Digilent chipKIT Max32
-# http://www.digilentinc.com/Products/Detail.cfm?Prod=CHIPKIT-MAX32
-#
-# Requires MPIDE (https://github.com/chipKIT32/chipKIT32-MAX)
-#
-# This configuration is based on @kyab's version
-# http://d.hatena.ne.jp/kyab/20130201
-MRuby::CrossBuild.new("chipKITMax32") do |conf|
-  toolchain :gcc
-
-  # Mac OS X
-  # MPIDE_PATH = '/Applications/Mpide.app/Contents/Resources/Java'
-  # GNU Linux
-  MPIDE_PATH = '/opt/mpide-0023-linux-20120903'
-
-  PIC32_PATH = "#{MPIDE_PATH}/hardware/pic32"
-
-  conf.cc do |cc|
-    cc.command = "#{PIC32_PATH}/compiler/pic32-tools/bin/pic32-gcc"
-    cc.include_paths << ["#{PIC32_PATH}/cores/pic32",
-                        "#{PIC32_PATH}/variants/Max32",
-                        "#{PIC32_PATH}/libraries"]
-    cc.flags = %w(-O2 -mno-smart-io -w -ffunction-sections -fdata-sections -g -mdebugger -Wcast-align
-                -fno-short-double -mprocessor=32MX795F512L -DF_CPU=80000000L -DARDUINO=23 -D_BOARD_MEGA_
-                -DMPIDEVER=0x01000202 -DMPIDE=23)
-    cc.compile_options = %Q[%{flags} -o "%{outfile}" -c "%{infile}"]
-
-    #configuration for low memory environment
-    cc.defines << %w(MRB_HEAP_PAGE_SIZE=64)
-    cc.defines << %w(KHASH_DEFAULT_SIZE=8)
-    cc.defines << %w(MRB_STR_BUF_MIN_SIZE=20)
-    cc.defines << %w(MRB_GC_STRESS)
-    #cc.defines << %w(MRB_DISABLE_STDIO) #if you dont need stdio.
-    #cc.defines << %w(POOL_PAGE_SIZE=1000) #effective only for use with mruby-eval
-  end
-
-  conf.cxx do |cxx|
-    cxx.command = conf.cc.command.dup
-    cxx.include_paths = conf.cc.include_paths.dup
-    cxx.flags = conf.cc.flags.dup
-    cxx.defines = conf.cc.defines.dup
-    cxx.compile_options = conf.cc.compile_options.dup
-  end
-
-  conf.archiver do |archiver|
-    archiver.command = "#{PIC32_PATH}/compiler/pic32-tools/bin/pic32-ar"
-    archiver.archive_options = 'rcs "%{outfile}" %{objs}'
-  end
-
-  #no executables
-  conf.bins = []
-
-  #do not build test executable
-  conf.build_mrbtest_lib_only
-
-  #disable C++ exception
-  conf.disable_cxx_exception
-
-  #gems from core
-  conf.gem :core => "mruby-print"
-  conf.gem :core => "mruby-math"
-  conf.gem :core => "mruby-enum-ext"
-
-  #light-weight regular expression
-  conf.gem :github => "masamitsu-murase/mruby-hs-regexp", :branch => "master"
-
-  #Arduino API
-  #conf.gem :github =>"kyab/mruby-arduino", :branch => "master"
-
-end