其实利用MinGW编译wxWidgets是一件挺简单的事情，但是最近在编译的时候遇到一些问题，并找到解决方案，因此在此分享一下个人经验。编译出错的原因是由于安装了MSYS的缘故。
错误信息类似于如下的结果：
if not exist ../../lib/gcc_lib/mswud/wx mkdir ../../lib/gcc_lib/mswud/wx
process_begin: CreateProcess(NULL, -c "if not exist ../../lib/gcc_lib/mswud/wx mkdir ../../lib/gcc_lib/mswud/wx", ...) failed.
make (e=2)
产生错误的原因是因为安装了MSYS后，利用Make命令会首先执行MSYS中的SHELL命令，从而会导致编译错误，对于这种情况，可以修改 $(WX)/build/msw目录中的makefile.gcc文件，使其默认采用CMD命令行。
makefile.gcc修改前： SHELL := $(COMSPEC)
makefile.gcc修改后： C:\WINDOWS\system32\CMD.exe (该路径为实际的CMD.exe的路径)
==============================================================================
最后还是顺便说一下MinGW编译wxWidgets的流程：
1 下载源代码 http://www.wxwidgets.org/downloads/
2 修改 $(WX)/build/msw 目录中的makefile.gcc文件 (可选)
3 修改 $(WX)/build/msw 目录中的congfig.gcc文件 ()
4 在控制台进入到 $(WX)/build/msw 目录中，执行 mingw32-make -f makefile.gcc
注： $(WX)表示你下载的源代码解压后的路径
对编译过程还不明白的可以查看官方说明：
http://wiki.wxwidgets.org/Compiling_wxWidgets_with_MinGW
==============================================================================
congfig.gcc文件
# =========================================================================
# This configuration file was generated by
# Bakefile 0.2.9 (http://www.bakefile.org)
# Beware that all changes made to this file will be overwritten next
# time you run Bakefile!
# =========================================================================
# -------------------------------------------------------------------------
# These are configurable options:
# -------------------------------------------------------------------------
# Compiler flags to link shared library
LINK_DLL_FLAGS ?= -shared
# Compiler flags to link loadable module
LINK_MODULE_FLAGS ?= -shared
# C compiler
CC = gcc
# C++ compiler
CXX = g++
# Standard flags for CC
CFLAGS ?=
# Standard flags for C++
CXXFLAGS ?=
# Standard preprocessor flags (common for CC and CXX)
CPPFLAGS ?=
# Standard linker flags
LDFLAGS ?=
# The C preprocessor
CPP ?= $(CC) -E
# What type of library to build? [0,1]
SHARED ?= 1
# Build wxUniversal instead of native port? [0,1]
WXUNIV ?= 0
# Compile Unicode build of wxWidgets? [0,1]
UNICODE ?= 1
# Use MSLU library when building Unicode version. [0,1]
MSLU ?= 0
# Type of compiled binaries [debug,release]
BUILD ?= release
# Should debugging info be included in the executables? The default value
# "default" means that debug info will be included if BUILD=debug
# and not included if BUILD=release. [0,1,default]
DEBUG_INFO ?= default
# Should __WXDEBUG__ be defined? The default value "default" means that it will
# be defined if BUILD=debug and not defined if BUILD=release. [0,1,default]
DEBUG_FLAG ?= default
# Multiple libraries or single huge monolithic one? [0,1]
MONOLITHIC ?= 1
# Build GUI libraries? [0,1]
USE_GUI ?= 1
# Build wxHTML library (USE_GUI must be 1)? [0,1]
USE_HTML ?= 1
# Build multimedia library (USE_GUI must be 1)? [0,1]
USE_MEDIA ?= 1
# Build wxXRC library (USE_GUI must be 1)? [0,1]
USE_XRC ?= 1
# Build wxAUI library (USE_GUI must be 1)? [0,1]
USE_AUI ?= 1
# Build wxRichTextCtrl library (USE_GUI must be 1)? [0,1]
USE_RICHTEXT ?= 1
# Build OpenGL canvas library (USE_GUI must be 1)? [0,1]
USE_OPENGL ?= 0
# Build ODBC database classes (USE_GUI must be 1)? [0,1]
USE_ODBC ?= 0
# Build quality assurance classes library (USE_GUI must be 1)? [0,1]
USE_QA ?= 0
# Enable exceptions in compiled code. [0,1]
USE_EXCEPTIONS ?= 1
# Enable run-time type information (RTTI) in compiled code. [0,1]
USE_RTTI ?= 1
# Enable threading in compiled code. [0,1]
USE_THREADS ?= 1
# Enable wxCairoContext for platforms other than Linux/GTK. [0,1]
USE_CAIRO ?= 0
# Link with gdiplus.lib? (Needed for wxGraphicsContext, will also set wxUSE_GRAPHICS_CONTEXT) [0,1]
USE_GDIPLUS ?= 0
# Is this official build by wxWidgets developers? [0,1]
OFFICIAL_BUILD ?= 0
# Use this to name your customized DLLs differently
VENDOR ?= custom
#
WX_FLAVOUR ?=
#
WX_LIB_FLAVOUR ?=
# Name of your custom configuration. This affects directory
# where object files are stored as well as the location of
# compiled .lib files and setup.h under the lib/ toplevel directory.
CFG ?=
# Compiler flags needed to compile test suite in tests directory. If you want
# to run the tests, set it so that the compiler can find CppUnit headers.
CPPUNIT_CFLAGS ?=
# Linker flags needed to link test suite in tests directory. If you want
# to run the tests, include CppUnit library here.
CPPUNIT_LIBS ?=
# Version of C runtime library to use. You can change this to
# static if SHARED=0, but it is highly recommended to not do
# it if SHARED=1 unless you know what you are doing. [dynamic,static]
RUNTIME_LIBS ?= dynamic
# Set the version of your Mingw installation here.
# "3" ...... this is for Mingw 2.0 or newer (comes with gcc3)
# "2.95" ... for Mingw 1.1 or any of the older versions [3,2.95]
GCC_VERSION ?= 3
