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Updates.

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2008-03-07  Tor Lillqvist  <tml@novell.com>

	* README.win32: Updates.


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Tor Lillqvist 2008-03-07 01:47:26 +00:00 committed by Tor Lillqvist
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@ -1,3 +1,7 @@
2008-03-07 Tor Lillqvist <tml@novell.com>
* README.win32: Updates.
2008-03-05 Tor Lillqvist <tml@novell.com>
* glib/glib.symbols: Remove g_uri_get_scheme.

139
README.win32
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@ -8,24 +8,21 @@ General
=======
For prebuilt binaries (DLLs and EXEs) and developer packages (headers,
import libraries) of GLib, GTK+, GIMP etc for Windows, surf to
http://www.gimp.org/win32/downloads.html . They are for "native"
import libraries) of GLib, Pango, GTK+ etc for Windows, go to
http://www.gtk.org/download-windows.html . They are for "native"
Windows meaning they use the Win32 API and Microsoft C runtime library
only, no POSIX (Unix) emulation layer (like Cygwin).
only. No POSIX (Unix) emulation layer like Cygwin in involved.
To build GLib on Win32, you can use either gcc or the Microsoft
compiler and tools. Both the compiler from MSVC 5.0 and from MSVC 6.0
have been used successfully.
To build GLib on Win32, you can use either gcc ("mingw") or the
Microsoft compiler and tools. Microsoft's MSVC6 and later have been
used successfully. People have also successfully cross-compiled GLib
for Win32 from Linux using the cross-mingw packages.
But note that to just *use* GLib on Windows, there is no need to build
it yourself. Prepackaged runtime and developer packages are available
from the website above. On Unix, it is quite normal that system admins
build and install libraries like GLib themselves without bothering to
look for prebuilt packages, especially if prebuilt packages tend to
use installation paths that don't conform to local customs.
Note that to just *use* GLib on Windows, there is no need to build it
yourself.
On Windows setting up a correct build environment can be quite a task,
especially if you are used to just type "./configure; make" on Unix,
especially if you are used to just type "./configure; make" on Linux,
and expect things to work as smoothly on Windows.
The following preprocessor macros are to be used for conditional
@ -51,15 +48,16 @@ Additionally, there are the compiler-specific macros:
- _MSC_VER is defined when using the Microsoft compiler
- __DMC__ is defined when using the Digital Mars C/C++ compiler
G_OS_WIN32 implies using the Microsoft C runtime MSVCRT.DLL. GLib is
not known to work with the older CRTDLL.DLL runtime, or the static
Microsoft C runtime libraries LIBC.LIB and LIBCMT.LIB. It apparently
does work with the debugging version of MSVCRT.DLL,
MSVCRTD.DLL. Presumably, if compiled with MSVC.NET, it also works with
MSVCR70.DLL. Please note that it's dubious if you would be allowed by
the license to distrubute a GLib linked to MSVCR70.DLL, as it is not
part of the operating system, but of the MSVC product. MSVCRT.DLL is
part of Windows.
G_OS_WIN32 implies using the Microsoft C runtime, normally
msvcrt.dll. GLib is not known to work with the older crtdll.dll
runtime, or the static Microsoft C runtime libraries libc.lib and
libcmt.lib. It apparently does work with the debugging version of
msvcrt.dll, msvcrtd.dll. If compiled with Microsoft compilers newer
than MSVC6, it also works with their compiler-specific runtimes, like
msvcr70.dll or msvcr80.dll. Please note that it's non totally clear if
you would be allowed by the license to distrubute a GLib linked to
msvcr70.dll or msvcr80.dll, as those are not part of the operating
system, but of the MSVC product. msvcrt.dll is part of Windows.
Building software that use GLib or GTK+
=======================================
@ -68,13 +66,21 @@ Even building software that just *uses* GLib or GTK+ also require to
have the right compiler set up the right way, so if you intend to use
gcc, follow the relevant instructions below in that case, too.
Tor uses gcc with the -mms-bitfields flag (used to be called
-fnative-struct in gcc 2.x), which means that in order to use the
prebuilt DLLs (especially of GTK+), if you compile your code with gcc,
you *must* also use that flag. This flag means that the struct layout
rules are identical to those used by MSVC. This is essential if the
same DLLs are to be usable both from gcc- and MSVC-compiled code. This
definitely is something one wants.
Tor uses gcc with the -mms-bitfields flag which means that in order to
use the prebuilt DLLs (especially of GTK+), if you compile your code
with gcc, you *must* also use that flag. This flag means that the
struct layout rules are identical to those used by MSVC. This is
essential if the same DLLs are to be usable both from gcc- and
MSVC(6)-compiled code. Such compatibility is desirable.
When using the prebuilt GLib DLLs that use msvcrt.dll from code that
uses other C runtimes like for example msvcr70.dll, one should note
that one cannot use such GLib API that takes or returns file
descriptors. On Windows, a file descriptor (the small integer as
returned by open() and handled by related functions, and included in
the FILE struct) is an index into a table local to the C runtime
DLL. A file descriptor in one C runtime DLL does not have the same
meaning in another C runtime DLL.
Building GLib
=============
@ -88,14 +94,14 @@ gettext-runtime (0.13.1 or newer) from www.gimp.org/win32/downloads.html.
Autoconfiscated build (with gcc)
================================
Tor uses gcc 3.3.1. Somewhat earlier or later versions presumably also
work.
You can either use gcc running on Cygwin, or the "pure" mingw
gcc. Using the latter might work better, or at least did at some
point. You should be running Cygwin, or maybe cross-compiling from
real Unix, for the configure script to work, obviously. It is also
possible to use MSYS.
Tor uses gcc 3.4.5 from www.mingw.org, and the rest of the mingw
utilities, including MSYS. Somewhat earlier or later versions of gcc
presumably also work fine. Using Cygwin's gcc with the -mno-cygwin
switch is not recommended. In theory it should work to use the
-no-cygwin flag, but Tor hasn't tested that lately, and it can easily
lead to confusion where one mixes up headers for Cygwin from
/usr/include with the headers one really should use. Ditto for
libraries.
If you want to use mingw's gcc, install gcc, Win32 headers and
binutils from www.mingw.org. Set up your PATH so that the mingw gcc is
@ -104,59 +110,51 @@ mingw gcc, you still want to have Cygwin to run make in.
Tor invokes configure using:
CC='gcc -mcpu=pentium3' CPPFLAGS='-I/target/include'
CFLAGS=-O3 LDFLAGS='-L/target/lib' ./configure --with-libiconv
--disable-gtk-doc --prefix=/target --host=i386-pc-mingw32
CC='gcc -mtune=pentium3 -mthreads' CPPFLAGS='-I/opt/gnu/include' \
LDFLAGS='-L/opt/gnu/lib -Wl,--enable-auto-image-base' CFLAGS=-O2 \
./configure --disable-gtk-doc --prefix=$TARGET
(on a single line). The /target/include mentioned contains the header
files for libintl and libiconv, and the (import) libraries are in
/target/lib. This happens to be in the same tree where he configures
GLib to be installed, but doesn't have to be.
(on a single line). The /opt/gnu mentioned contains the header files
for GNU and (import) libraries for GNU libintl. The build scripts used
to produce the prebuilt binaries are included in the "dev" packages.
Please note that the ./configure mechanism should not blindly be used
to build a GLib to be distributed to other developers because it
produces a compiler-dependent glibconfig.h (and config.h, but that
produces a compiler-dependent glibconfig.h. (Also config.h, but that
shouldn't matter, as it isn't seen by GLib-using applications). For
instance, the typedef for gint64 is long long with gcc, but __int64
with MSVC.
Except for this and a few other minor issues, there really shouldn't
be any reason to distribute separate GLib headers and DLLs for gcc and
MSVC users, as the compilers generate code that uses the same C
MSVC6 users, as the compilers generate code that uses the same C
runtime library. The DLL generated by either compiler is binary
compatible with the other one. Thus one either has to manually edit
glibconfig.h afterwards, or use the supplied glibconfig.h.win32 which
has been produced by running configure twice, once using gcc and once
using MSVC, and merging the resulting files with diff -D.
For GLib, the DLL is called
libglib-2.0-0.dll, and the import libraries libglib-2.0.dll.a and
glib-2.0.lib. Note that the "2.0" is part of the "basename" of the
library, it is not something that libtool has tucked on. The -0 suffix
is the value of "LT_CURRENT - LT_AGE". The 0 is *not* simply the micro
version number of GLib, although, for GLib 2.2.0, it happens to be the
same. The LT_CURRENT - LT_AGE value will on purpose be kept as zero as
long as binary compatibility is maintained. For the gory details, see
configure.in and libtool documentation.
For MSVC7 and later (Visual C++ .NET 2003, Visual C++ 2005, Visual C++
2008 etc) it is preferred to use specific builds of GLib DLLs that use
the same C runtime as the code that uses GLib. Such DLLs should be
named differently than the ones that use msvcrt.dll.
If you want to run the Cygwin-hosted gcc, and still want to produce
code that does not use Cygwin, but the msvcrt runtime, in theory it
should work to use the -no-cygwin flag, but Tor hasn't tested that
lately.
If you would want to use the Cygwin tools to generate a GLib that
*does* use the Cygwin runtime, the normal Unix configuration method
should work as if on Unix. Note that successfully producing shared
libraries (DLLs) for Cygwin most probably requires you to have a very
new libtool. (And a new libtool probably requires rather new autoconf
and automake.) Tor hasn't tested this in a while, either.
For GLib, the DLL is called libglib-2.0-0.dll, and the import
libraries libglib-2.0.dll.a and glib-2.0.lib. Note that the "2.0" is
part of the "basename" of the library, it is not something that
libtool has added. The -0 suffix is the value of "LT_CURRENT -
LT_AGE". The 0 is *not* simply the micro version number of GLib,
although, for GLib 2.x.0, it happens to be the same. The LT_CURRENT -
LT_AGE value will on purpose be kept as zero as long as binary
compatibility is maintained. For the gory details, see configure.in
and libtool documentation.
Cross-compiling
===============
It is possible to build GLib using a cross compiler. See
docs/reference/glib/html/glib-cross-compiling.html (part of the
GLib reference manual) for more information.
docs/reference/glib/html/glib-cross-compiling.html (part of the GLib
reference manual) for more information.
Building with MSVC
==================
@ -200,10 +198,9 @@ nmake -f makefile.msc DEBUG=1
ways (for example the Gimp plug-in communication).
]
Required libraries (not build from cvs)
Required libraries (not build from svn)
------------------
libintl (gnu-intl), libiconv
libtiff, libpng, zlib, libjpeg
libintl (gnu-intl),
are available pre-built from the website mentioned above.