Updated first example using latest winebuild dll/so procedure.
This commit is contained in:
Wilbur N. Dale
Alexandre Julliard
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0b6c6e7605
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763953a873
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@ -1,5 +1,5 @@
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WineLib HOWTO
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Version 30-Jul-2000
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Version 28-Dec-2000
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AUTHOR:
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Wilbur Dale
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@ -260,7 +260,7 @@ implemented API functions.
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Once you have implemented an API function, submit the change back to
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the Wine project so the next person to need the same function does not
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need to repeat your work. Remember, someone else wrote all of the
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other API functions that you are using, so you are benefiting from
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other API functions that you are using, so you are benefitting from
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their work. Let other people benefit from your work as well. If you
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work for a company, you may need your company's permission to "give
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away" your work.
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@ -309,17 +309,21 @@ programs have an entry point called WinMain(), while non-windows
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compilers use an entry point of main(). Hence, we need some "glue" to
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glue the main() entry point to the WinMain() in the windows program.
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In WineLib, the glue is provided by the spec file. Spec files are used
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in several places in Wine and WineLib to provide glue between windows
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code and code for non-windows compilers. WineLib provides a tool
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called winebuild in the tools/winebuild directory that converts a spec file
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into a C file that can be compiled and linked with the windows source
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files. If you examine hello2.spec, you will see the following:
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In WineLib, some of the glue is provided by the spec file. Spec files
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are used in several places in Wine and WineLib to provide glue between
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windows code and code for non-windows compilers. WineLib provides a
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tool called winebuild in the tools/winebuild directory that converts a
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spec file into a C file that can be compiled and linked with the
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windows source files. If you examine hello2.spec, you will see the
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following:
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name hello2
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mode guiexe
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type win32
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init WinMain
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import user32.dll
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import kernel32.dll
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import ntdll.dll
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Information on the complete format of the spec file can be found in
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<wine>/tools/winebuild/README. Name is the name of the
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@ -327,17 +331,19 @@ application. Mode is the type of "glue" that winebuild needs to
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create. Possible modes are 'dll' for a library, 'cuiexe' for a console
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application, and 'guiexe' for a regular graphical application. Type is
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the type of API, either win32 or win16. Win16 is supported only in
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Wine, not WineLib, so you should use win32. Init is the function to
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call for initialization: in this case, WinMain.
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Wine, not WineLib, so you should use win32. Import is a dll that must
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be loaded for the program to execute.
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During compilation of the hello2 executable, the following command is
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executed.
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../tools/winebuild/winebuild -fPIC -o hello2.spec.c -spec hello2.spec
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LD_LIBRARY_PATH="..:$LD_LIBRARY_PATH" \
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../tools/winebuild/winebuild -fPIC -L ../dlls -sym hello2.o \
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-o hello2.spec.c -spec hello2.spec
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The program winebuild will generate the output file hello2.spec.c (option
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-o hello2.spec.c) from the spec file hello2.spec (option -spec
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hello2.spec). The option -pic specifies that winebuild should generate
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hello2.spec). The option -fPIC specifies that winebuild should generate
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position independent code and is only necessary for building shared
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library files (.so files). It is not needed when building the main
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executable spec file, but since there is no assembly code generated
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@ -345,33 +351,40 @@ for the main executable, it doesn't make any difference anyway. [5]
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The winebuild program is used in several places in Wine as well as
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WineLib; however, only the -spec option will be used in WineLib. The
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output file hello2.spec.c contains main() and the glue code to
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initialize WineLib and call WinMain().
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output file hello2.spec.c contains the glue code to initialize WineLib
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and call WinMain().
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Now the compilation of hello2 can proceed as any other compilation for
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a program.
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In order to run hello2, we will compile the code into a shared library
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(hello2.so) and create a symbolic link (hello2) with the wine
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executable with the following steps.
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gcc -c -I. -I. -I../include -I../include -g -O2 -Wall -D_REENTRANT \
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-I/usr/X11R6/include -o hello2.o hello2.c
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gcc -c -I. -I. -I../include -I../include -g -O2 -Wall -fPIC -DSTRICT \
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-D_REENTRANT -I/usr/X11R6/include -o hello2.o hello2.c
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to compile the windows program itself and
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gcc -c -I. -I. -I../include -I../include -g -O2 -Wall -fPIC -DSTRICT \
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-D_REENTRANT -I/usr/X11R6/include -o hello2.spec.o hello2.spec.c
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to compile the spec file and the glue code. Finally,
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gcc -shared -Wl,-rpath,/usr/local/lib -Wl,-Bsymbolic -o hello2.so \
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hello2.o hello2.spec.o -L.. -lwine -lncurses -lm -lutil -ldl
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links the compiled files into a shared library.
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FIXME: -D_REENTRANT why?
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FIXME: explain compiler options
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to compile the window program itself and
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gcc -c -I. -I. -I../include -I../include -g -O2 -Wall -D_REENTRANT \
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-I/usr/X11R6/include -o hello2.spec.o hello2.spec.c
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to compile the main() and the glue code. Finally,
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gcc -o hello2 hello2.o hello2.spec.o -L../dlls -L.. -lwine -lncurses
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-lm -lutil -ldl
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FIXME: explain linker options
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will link the files into an executable. All of the steps are automated
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with the makefile, so "make hello2" will execute all of the steps for
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you.
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All of the steps are automated with the makefile, so "make hello2.so"
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will execute all of the steps for you. A final step is "make hello2",
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which creates a symbolic link from hello2 to the wine executable. Now,
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when "./hello2" is run, the wine executable sees it was called by the
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name "hello2" and loads the shared library "hello2.so" and executes
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the program.
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THE INFO BELOW IS OUT OF DATE (28-Dec-2000)
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Thus, you now have the basics of compiling a simple windows
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program. There are two more things to learn for compiling more complex
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@ -1284,5 +1297,7 @@ Damyan.
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LocalWords: dllExamples WindowsExeWindowsDLL WindowsExeWineDLL WineExeWineDLL
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LocalWords: WineExeWindowsDLL Borland URL's cd distclean DllMain winemain exe
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LocalWords: winedll cdecl WINEbirthDay str WINEfullName WINEbirthday libtool
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LocalWords: proost conf LD libwinedll Gouget docs dumpbin ConstString
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LocalWords: pWINEfullName LoadLibrary GetProcAddress hiddenWinedll
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LocalWords: proost conf LD libwinedll Gouget docs dumpbin ConstString Lumin
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LocalWords: pWINEfullName LoadLibrary GetProcAddress hiddenWinedll BV HW dlls
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LocalWords: Zandheuvel Oosterhout linkers executables runtime ntdll sym Wl
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LocalWords: DSTRICT REENTRANT rpath Bsymbolic makefile multi
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