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131 lines
6.3 KiB
Plaintext
131 lines
6.3 KiB
Plaintext
General
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=======
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For more information about the port or GLib, GTk+ and the GIMP to
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native Windows, and pre-built binary packages, see
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http://www.iki.fi/tml/gimp/win32/ . "Native" means that we use the
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Win32 API only, and not any POSIX emulation layer except that provided
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by the Microsoft runtime C library. Additionally, a pthreads emulation
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library is used.
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To build GLib on Win32, you can use either the Microsoft compiler and
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tools, or gcc. Both the compiler from MSVC 5.0 and from MSVC 6.0 have
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been used successfully. With gcc I mean egcs-1.1.2 (as distributed by
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Mumit Khan), running under cygwin-b20.1. To successfully use gcc,
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follow the instructions below. I use gcc -mno-cygwin, i.e. the
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produced executables (.exe and .dll files) do *not* require the cygwin
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runtime library.
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To test the GLib functions, go to the tests subdirectory and enter
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`nmake -f makefile.msc check` or `make -f makefile.cygwin check`.
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If you would want to use the cygwin tools to generate executables that
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*do* use the cygwin runtime, the normal Unix configuration method
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should work as if on Unix. But it won't produce DLLs. At least I
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haven't succeeded in that.
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With a little work, it might be possible to use the ./configure
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mechanism also with a "mingw32" configuration.
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The following preprocessor macros are used for conditional compilation
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related to Win32:
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- WIN32 is defined when compiling for the Win32 platform, regardless
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if using the X11 or Win32 windowing API (in the case of GLib, this
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dimension isn't significant), regardless whether using a more or
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less complete POSIX emulation runtime layer (like Cygwin) or not.
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- NATIVE_WIN32 is defined when compiling for Win32, *and* without
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any POSIX emulation, other that to the extent provided by the
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bundled Microsoft C library (msvcrt.dll) and the pthreads-win32
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library. For instance, pathnames are in the native Windows syntax.
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The Win32 port uses the combination with both of those on.
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Additionally, there are the compiler-specific macros:
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- _MSC_VER is defined when using the Microsoft compiler
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- __GNUC__ is defined when using GCC (i.e. egcs)
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Some of the usage of these macros was a bit mixed up, and had to be
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straightened out when adding the gcc support. In particular, I used to
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check for _MSC_VER in some places where I really wanted to check for
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the Microsoft C library, and those checks has now been changed to
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NATIVE_WIN32. NATIVE_WIN32 ought to be renamed to USE_MSVCRT.
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Pthreads library
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================
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Before building you must get the pthreads library for Win32 from
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http://sourceware.cygnus.com/pthreads-win32/. The pthreads-win32
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snapshot from 1999-04-07 is the one that should be used. Edit the
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location of the pthreads library and include files in makefile.msc or
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makefile.cygwin. The ptreads distribution includes the precompiled dll
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and import libraries both for MSVC and gcc.
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The pthreads for Win32 package that the thread support uses supposedly
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isn't quite ready yet, and thus threads stuff should not be relied
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upon for anything serious.
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Building with MSVC
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==================
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If using the Microsoft toolchain, build with `nmake -f
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makefile.msc`. Install with `nmake -f makefile.msc install`.
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Building with gcc
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=================
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The gcc support was added quite recently, but seems to work. Debugging
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with gdb works. I prefer to use the msvcrt runtime and not the default
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crtdll. Especially, as the pthread library also uses msvcrt, using
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crtdll would probably not be a good idea at all. Using msvcrt can be
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achieved by applying the following diff to the specs file, which
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typically is installed as
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C:\cygnus\cygwin-b20\H-i586-cygwin32\lib\gcc-lib\i586-cygwin32\egcs-2.91.66\specs.
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Sorry for the illegibility of this diff, but the specs file is like
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that... This patch replaces -lcrtdll with -lmsvcrt, replaces crt1 with
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crt2, removes -lmoldname (because that might pull in crtdll.dll), and
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defines __MSVCRT__.
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--- specs.ORIG Sun Apr 25 00:40:40 1999
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+++ specs Sun Apr 25 00:48:04 1999
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@@ -23 +23 @@
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-%{pg:-lgmon} %{!mno-cygwin:-lcygwin} %{mno-cygwin:-lmingw32 -lmoldname -lcrtdll} %{mwindows:-luser32 -lgdi32 -lcomdlg32} -lkernel32 -ladvapi32 -lshell32
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+%{pg:-lgmon} %{!mno-cygwin:-lcygwin} %{mno-cygwin:-lmingw32 -lmsvcrt} %{mwindows:-luser32 -lgdi32 -lcomdlg32} -lkernel32 -ladvapi32 -lshell32
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@@ -29 +29 @@
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-%{mdll: %{!mno-cygwin:dllcrt0%O%s} %{mno-cygwin:dllcrt1%O%s}} %{!mdll: %{!mno-cygwin:crt0%O%s} %{mno-cygwin:crt1%O%s} %{pg:gcrt0%O%s}}
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+%{mdll: %{!mno-cygwin:dllcrt0%O%s} %{mno-cygwin:dllcrt2%O%s}} %{!mdll: %{!mno-cygwin:crt0%O%s} %{mno-cygwin:crt2%O%s} %{pg:gcrt0%O%s}}
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@@ -38 +38 @@
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--Di386 -D_WIN32 -DWINNT -D_X86_=1 -D__STDC__=1 -D__stdcall=__attribute__((__stdcall__)) -D__cdecl=__attribute__((__cdecl__)) -D__declspec(x)=__attribute__((x)) -Asystem(winnt) -Acpu(i386) -Amachine(i386)
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+-Di386 -D_WIN32 %{mno-cygwin:-D__MSVCRT__ } -DWINNT -D_X86_=1 -D__STDC__=1 -D__stdcall=__attribute__((__stdcall__)) -D__cdecl=__attribute__((__cdecl__)) -D__declspec(x)=__attribute__((x)) -Asystem(winnt) -Acpu(i386) -Amachine(i386)
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You should also fix the definition of _dev_t in the header
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mingw32/sys/types.h to correspond to what type actually is used by
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msvcrt.dll. It should be unsigned int, not short. Otherwise stat()
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calls will fail.
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You also will have to get the mingw32 source snapshot from
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http://www.geocities.com/Tokyo/Towers/6162/mingw32_980701_tar.gz (this
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is the source to the "mingw32" part of Mumit Khan's egcs-1.1.2
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distribution.) Unpack it and fix the prototype and call to
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__getmainargs() in init.c to include one more parameter, an int *,
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which should be passed the address of a zero int. Code snippets below:
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...
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#ifdef __MSVCRT__
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extern void __getmainargs(int *, char***, char***, int, int *);
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#else
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...
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#ifdef __MSVCRT__
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int newmode = 0;
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(void) __getmainargs(&_argc, &_argv, &dummy_environ, _CRT_glob, &newmode);
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#else
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...
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Remake dllcrt2.o (which is the file which gets linked into dlls when
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using msvcrt, as per the specs file above), and move it into place
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(typically C:\cygnus\cygwin-b20\H-i586-cygwin32\i586-cygwin32\lib\dllcrt2.o).
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Next, go back to the GLib directory and build using `make -f makefile.cygwin`.
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