install-msw.txt

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- If using GnuWin32 b18, you will need to copy windres.exe
  from e.g. the MinGW distribution, to a directory in your path.


Symantec & DigitalMars C++ compilation
----------------------------------------------------------------

The DigitalMars compiler is a free succssor to the Symantec compiler
and can be downloaded from http://www.digitalmars.com/
   
1. You need to download and unzip in turn (later packages will overwrite
   older files)
      Digital Mars C/C++ Compiler Version 8.40 or later
      Basic utilities
   from http://www.digitalmars.com/download/freecompiler.html

2. Change directory to build\msw and type 'make -f makefile.dmc' to
   make the wxWidgets core library.

3. Change directory to samples\minimal and type 'make -f makefile.dmc'
   to make this sample. Most of the other samples also work.


Note that if you don't have the files makefile.dmc you may create them yourself
using bakefile tool according to the instructions in build\bakefiles\README:

    cd build\bakefiles
    bakefile_gen -f dmars -b wx.bkl
    bakefile_gen -f dmars -b ../../samples/minimal/minimal.bkl


16-bit compilation is no longer supported.

Configuring the build
================================================================

So far the instructions only explained how to build release DLLs of wxWidgets
and did not cover any configuration. It is possible to change many aspects of
the build, including debug/release and ANSI/Unicode settings. All makefiles in
build\msw directory use same options (with a few exceptions documented below)
and the only difference between them is in object files and library directory
names and in make invocation command.

Changing the settings
----------------------------------------------------------------

There are two ways to modify the settings: either by passing the values as
arguments when invoking make or by editing build\msw\config.$(compiler) file
where $(compiler) is same extension as the makefile you use has (see below).
The latter is good for setting options that never change in your development
process (e.g. GCC_VERSION or VENDOR). If you want to build several versions of
wxWidgets and use them side by side, the former method is better. Settings in
config.* files are shared by all makefiles (samples, contrib, main library),
but if you pass the options as arguments, you must use same arguments you used
for the library when building samples or contrib libraries!

Examples of invoking make in Unicode debug build (other options described
below are set analogically):

Visual C++:
  > nmake -f makefile.vc BUILD=debug UNICODE=1

Borland C++:
  > make -f makefile.bcc -DBUILD=debug -DUNICODE=1
  (Note that you have to use -D to set the variable, unlike in other make
  tools!)

Watcom C/C++:
  > wmake -f makefile.wat BUILD=debug UNICODE=1

MinGW using native makefiles:
  > mingw32-make -f makefile.gcc BUILD=debug UNICODE=1

MinGW using configure:
  > ./configure --enable-debug --enable-unicode
  (see ./configure --help on details; configure is not covered in this
  section)

Cygwin using configure:
  > ./configure --disable-precomp-headers --enable-debug --enable-unicode
  (use --disable-precomp-headers if Cygwin doesn't support precompiled
  headers)

Brief explanation of options and possible values is in every
build\msw\config.* file; more detailed description follows.

Basic options
----------------------------------------------------------------

BUILD=release
  Builds release version of the library. It differs from default 'debug' 
  in lack of appended 'd' in name of library, does not define __WXDEBUG__
  and not include debug information compiled into object files and the 
  executable.

SHARED=1
  Build shared libraries (DLLs). By default, DLLs are not built
  (SHARED=0).

UNICODE=1
  To build Unicode versions of the libraries, add UNICODE=1 to make invocation
  (default is UNICODE=0). If you want to be able to use Unicode version on
  Windows9x, you will need to set MSLU=1 as well.

  This option affect name of the library ('u' is appended) and the directory
  where the library and setup.h are store (ditto).

WXUNIV=1
  Build wxUniversal instead of native wxMSW (see
  http://www.wxwidgets.org/wxuniv.htm for more information).

Advanced options
----------------------------------------------------------------

MONOLITHIC=1
  Starting with version 2.5.1, wxWidgets has the ability to be built as 
  several smaller libraries instead of single big one as used to be the case
  in 2.4 and older versions. This is called "multilib build" and is the
  default behaviour of makefiles. You can still build single library
  ("monolithic build") by setting MONOLITHIC variable to 1.

USE_GUI=0
  Disable building GUI parts of the library, build only wxBase components used
  by console applications. Note that if you leave USE_GUI=1 then both wxBase
  and GUI libraries are built. If you are building monolithic library, then
  you should set wxUSE_GUI to 1 in setup.h.

USE_OPENGL=1
  Build wxmsw25_gl.lib library with OpenGL integration class wxGLCanvas.
  You must also modify your setup.h to #define wxUSE_GLCANVAS 1. Note that
  OpenGL library is always built as additional library, even in monolithic
  build!

USE_ODBC=1
  Build two additional libraries in multilib mode, one with database
  classes and one with wxGrid database support. You must
  #define wxUSE_ODBC 1 in setup.h

USE_HTML=0
  Do not build wxHTML library. If MONOLITHIC=1, then you must also
  #define wxUSE_HTML 1 in setup.h.

USE_XRC=0
  Do not build XRC resources library. If MONOLITHIC=1, then you must also
  #define wxUSE_HTML 1 in setup.h.

RUNTIME_LIBS=static
  Links static version of C and C++ runtime libraries into the executable, so
  that the program does not depend on DLLs provided with the compiler (e.g.
  Visual C++'s msvcrt.dll or Borland's cc3250mt.dll).
  Caution: Do not use static runtime libraries when building DLL (SHARED=1)!

MSLU=1
  Enables MSLU (Microsoft Layer for Unicode). This setting makes sense only if
  used together with UNICODE=1. If you want to be able to use Unicode version
  on Windows9x, you will need MSLU (Microsoft Layer for Unicode) runtime DLL
  and import lib.  The former can be downloaded from Microsoft, the latter is
  part of the latest Platform SDK from Microsoft (see msdn.microsoft.com for
  details). An alternative implementation of import library can be downloaded
  from http://libunicows.sourceforge.net - unlike the official one, this one
  works with other compilers and does not require 300+ MB Platform SDK update.

DEBUG_FLAG=0
DEBUG_FLAG=1
  If set to 1, define __WXDEBUG__ symbol, append 'd' to library name and do
  sanity checks at runtime. If set to 0, don't do it. By default, this is
  governed by BUILD option (if 'debug', DEBUG_FLAG=1, if 'release' it is 0),
  but it is sometimes desirable to modify default behaviour and e.g. define
  __WXDEBUG__ even in release builds.

DEBUG_INFO=0
DEBUG_INFO=1
  Same as DEBUG_FLAG in behaviour, this option affects whether debugging
  information is included in the executable or not.

VENDOR=<your company name>
  Set this to a short string identifying your company if you are planning to
  distribute wxWidgets DLLs with your application. Default value is 'custom'.
  This string is included as part of DLL name. wxWidgets DLLs contain compiler
  name, version information and vendor name in them. For example
  wxmsw250_core_bcc_custom.dll is one of DLLs build using Borland C++ with
  default settings. If you set VENDOR=mycorp, the name will change to
  wxmsw250_core_bcc_mycorp.dll.

CFG=<configuration name>
  Sets configuration name so that you can have multiple wxWidgets builds with
  different setup.h settings coexisting in same tree. See "Object and library
  directories" below for more information.

Compiler specific options
----------------------------------------------------------------

* MinGW

If you are using gcc-2.95 instead of gcc3, you must set GCC_VERSION to
2.95. In build\msw\config.gcc, change 
> GCC_VERSION = 3
to
> GCC_VERSION = 2.95

* Visual C++

DEBUG_RUNTIME_LIBS=0
DEBUG_RUNTIME_LIBS=1
  If set to 1, msvcrtd.dll is used, if to 0, msvcrt.dll is used. By default
  msvcrtd.dll is used only if the executable contains debug info and
  msvcrt.dll if it doesn't. It is sometimes desirable to build with debug info
  and still link against msvcrt.dll (e.g. when you want to ship the app to
  customers and still have usable .pdb files with debug information) and this
  setting makes it possible.

Fine-tuning the compiler
----------------------------------------------------------------

All makefiles have variables that you can use to specify additional options
passed to the compiler or linker. You won't need this in most cases, but if you
do, simply add desired flags to CFLAGS (for C compiler), CXXFLAGS (for C++
compiler), CPPFLAGS (for both C and C++ compiler) and LDFLAGS (the linker).

Object and library directories
----------------------------------------------------------------

All object files produced during library build are stored in a directory under
build\msw. It's name is derived from build settings and CFG variable and from
compiler name. Examples of directory names:

  build\msw\bcc_msw            SHARED=0
  build\msw\bcc_mswdll         SHARED=1
  build\msw\bcc_mswunivd       SHARED=0, WXUNIV=1, BUILD=debug
  build\msw\vc_mswunivd        ditto, with Visual C++

Libraries and DLLs are copied into subdirectory of lib directory with 
name derived from compiler and static/DLL setting and setup.h into directory
with name that contains other settings:

  lib\bcc_msw
  lib\bcc_lib\msw\wx\setup.h
  lib\bcc_dll
  lib\bcc_dll\msw\wx\setup.h
  lib\bcc_lib
  lib\bcc_lib\mswunivd\wx\setup.h
  lib\vc_lib
  lib\vc_lib\mswunivd\wx\setup.h

Each lib\ subdirectory has wx subdirectory with setup.h as seen above.
This file is copied there from include\wx\msw\setup.h (and if it doesn't exist,
from include\wx\msw\setup0.h) and this is the copy of setup.h that is used by
all samples and should be used by your apps as well. If you are doing changes
to setup.h, you should do them in this file, _not_ in include\wx\msw\setup.h.

If you set CFG to something, the value is appended to directory names. E.g.
for CFG=MyBuild, you'll have object files in
  
  build\msw\bcc_mswMyBuild
  build\msw\bcc_mswdllMyBuild
  etc.

and libraries in

  lib\bcc_libMyBuild
  lib\bcc_dllMyBuild
  etc.

By now it is clear what CFG is for: builds with different CFG settings don't
share any files and they use different setup.h files. This allows you to e.g. 
have two static debug builds, one with wxUSE_SOCKETS=0 and one with sockets
enabled (without CFG, both of them would be put into same directory and there
would be conflicts between the files).

General Notes
=================================================================

- Debugging: under Windows 95, debugging output isn't output in
  the same way that it is under NT or Windows 3.1.
  Please see DebugView available from http://www.sysinternals.com.