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| .IX Title "DLLTOOL.1 1" |
| .TH DLLTOOL.1 1 "binutils-2.11.90" "2001-05-30" "GNU" |
| .UC |
| .SH "NAME" |
| dlltool \- Create files needed to build and use DLLs. |
| .SH "SYNOPSIS" |
| .IX Header "SYNOPSIS" |
| dlltool [\-d|\-\-input-def \fIdef-file-name\fR] |
| [\-b|\-\-base-file \fIbase-file-name\fR] |
| [\-e|\-\-output-exp \fIexports-file-name\fR] |
| [\-z|\-\-output-def \fIdef-file-name\fR] |
| [\-l|\-\-output-lib \fIlibrary-file-name\fR] |
| [\-\-export-all-symbols] [\-\-no-export-all-symbols] |
| [\-\-exclude-symbols \fIlist\fR] |
| [\-\-no-default-excludes] |
| [\-S|\-\-as \fIpath-to-assembler\fR] [\-f|\-\-as-flags \fIoptions\fR] |
| [\-D|\-\-dllname \fIname\fR] [\-m|\-\-machine \fImachine\fR] |
| [\-a|\-\-add-indirect] [\-U|\-\-add-underscore] [\-k|\-\-kill-at] |
| [\-A|\-\-add-stdcall-alias] |
| [\-x|\-\-no-idata4] [\-c|\-\-no-idata5] [\-i|\-\-interwork] |
| [\-n|\-\-nodelete] [\-v|\-\-verbose] [\-h|\-\-help] [\-V|\-\-version] |
| [object-file ...] |
| .SH "DESCRIPTION" |
| .IX Header "DESCRIPTION" |
| \&\f(CW\*(C`dlltool\*(C'\fR reads its inputs, which can come from the \fB\-d\fR and |
| \&\fB\-b\fR options as well as object files specified on the command |
| line. It then processes these inputs and if the \fB\-e\fR option has |
| been specified it creates a exports file. If the \fB\-l\fR option |
| has been specified it creates a library file and if the \fB\-z\fR option |
| has been specified it creates a def file. Any or all of the \-e, \-l |
| and \-z options can be present in one invocation of dlltool. |
| .PP |
| When creating a \s-1DLL\s0, along with the source for the \s-1DLL\s0, it is necessary |
| to have three other files. \f(CW\*(C`dlltool\*(C'\fR can help with the creation of |
| these files. |
| .PP |
| The first file is a \fB.def\fR file which specifies which functions are |
| exported from the \s-1DLL\s0, which functions the \s-1DLL\s0 imports, and so on. This |
| is a text file and can be created by hand, or \f(CW\*(C`dlltool\*(C'\fR can be used |
| to create it using the \fB\-z\fR option. In this case \f(CW\*(C`dlltool\*(C'\fR |
| will scan the object files specified on its command line looking for |
| those functions which have been specially marked as being exported and |
| put entries for them in the .def file it creates. |
| .PP |
| In order to mark a function as being exported from a \s-1DLL\s0, it needs to |
| have an \fB\-export:<name_of_function>\fR entry in the \fB.drectve\fR |
| section of the object file. This can be done in C by using the |
| \&\fIasm()\fR operator: |
| .PP |
| .Vb 2 |
| \& asm (".section .drectve"); |
| \& asm (".ascii \e"-export:my_func\e""); |
| .Ve |
| .Vb 1 |
| \& int my_func (void) { ... } |
| .Ve |
| The second file needed for \s-1DLL\s0 creation is an exports file. This file |
| is linked with the object files that make up the body of the \s-1DLL\s0 and it |
| handles the interface between the \s-1DLL\s0 and the outside world. This is a |
| binary file and it can be created by giving the \fB\-e\fR option to |
| \&\f(CW\*(C`dlltool\*(C'\fR when it is creating or reading in a .def file. |
| .PP |
| The third file needed for \s-1DLL\s0 creation is the library file that programs |
| will link with in order to access the functions in the \s-1DLL\s0. This file |
| can be created by giving the \fB\-l\fR option to dlltool when it |
| is creating or reading in a .def file. |
| .PP |
| \&\f(CW\*(C`dlltool\*(C'\fR builds the library file by hand, but it builds the |
| exports file by creating temporary files containing assembler statements |
| and then assembling these. The \fB\-S\fR command line option can be |
| used to specify the path to the assembler that dlltool will use, |
| and the \fB\-f\fR option can be used to pass specific flags to that |
| assembler. The \fB\-n\fR can be used to prevent dlltool from deleting |
| these temporary assembler files when it is done, and if \fB\-n\fR is |
| specified twice then this will prevent dlltool from deleting the |
| temporary object files it used to build the library. |
| .PP |
| Here is an example of creating a \s-1DLL\s0 from a source file \fBdll.c\fR and |
| also creating a program (from an object file called \fBprogram.o\fR) |
| that uses that \s-1DLL:\s0 |
| .PP |
| .Vb 4 |
| \& gcc -c dll.c |
| \& dlltool -e exports.o -l dll.lib dll.o |
| \& gcc dll.o exports.o -o dll.dll |
| \& gcc program.o dll.lib -o program |
| .Ve |
| .SH "OPTIONS" |
| .IX Header "OPTIONS" |
| The command line options have the following meanings: |
| .Ip "\f(CW\*(C`\-d \f(CIfilename\f(CW\*(C'\fR" 4 |
| .IX Item "-d filename" |
| .Ip "\f(CW\*(C`\-\-input\-def \f(CIfilename\f(CW\*(C'\fR" 4 |
| .IX Item "--input-def filename" |
| Specifies the name of a .def file to be read in and processed. |
| .Ip "\f(CW\*(C`\-b \f(CIfilename\f(CW\*(C'\fR" 4 |
| .IX Item "-b filename" |
| .Ip "\f(CW\*(C`\-\-base\-file \f(CIfilename\f(CW\*(C'\fR" 4 |
| .IX Item "--base-file filename" |
| Specifies the name of a base file to be read in and processed. The |
| contents of this file will be added to the relocation section in the |
| exports file generated by dlltool. |
| .Ip "\f(CW\*(C`\-e \f(CIfilename\f(CW\*(C'\fR" 4 |
| .IX Item "-e filename" |
| .Ip "\f(CW\*(C`\-\-output\-exp \f(CIfilename\f(CW\*(C'\fR" 4 |
| .IX Item "--output-exp filename" |
| Specifies the name of the export file to be created by dlltool. |
| .Ip "\f(CW\*(C`\-z \f(CIfilename\f(CW\*(C'\fR" 4 |
| .IX Item "-z filename" |
| .Ip "\f(CW\*(C`\-\-output\-def \f(CIfilename\f(CW\*(C'\fR" 4 |
| .IX Item "--output-def filename" |
| Specifies the name of the .def file to be created by dlltool. |
| .Ip "\f(CW\*(C`\-l \f(CIfilename\f(CW\*(C'\fR" 4 |
| .IX Item "-l filename" |
| .Ip "\f(CW\*(C`\-\-output\-lib \f(CIfilename\f(CW\*(C'\fR" 4 |
| .IX Item "--output-lib filename" |
| Specifies the name of the library file to be created by dlltool. |
| .Ip "\f(CW\*(C`\-\-export\-all\-symbols\*(C'\fR" 4 |
| .IX Item "--export-all-symbols" |
| Treat all global and weak defined symbols found in the input object |
| files as symbols to be exported. There is a small list of symbols which |
| are not exported by default; see the \f(CW\*(C`\-\-no\-default\-excludes\*(C'\fR |
| option. You may add to the list of symbols to not export by using the |
| \&\f(CW\*(C`\-\-exclude\-symbols\*(C'\fR option. |
| .Ip "\f(CW\*(C`\-\-no\-export\-all\-symbols\*(C'\fR" 4 |
| .IX Item "--no-export-all-symbols" |
| Only export symbols explicitly listed in an input .def file or in |
| \&\fB.drectve\fR sections in the input object files. This is the default |
| behaviour. The \fB.drectve\fR sections are created by \fBdllexport\fR |
| attributes in the source code. |
| .Ip "\f(CW\*(C`\-\-exclude\-symbols \f(CIlist\f(CW\*(C'\fR" 4 |
| .IX Item "--exclude-symbols list" |
| Do not export the symbols in \fIlist\fR. This is a list of symbol names |
| separated by comma or colon characters. The symbol names should not |
| contain a leading underscore. This is only meaningful when |
| \&\f(CW\*(C`\-\-export\-all\-symbols\*(C'\fR is used. |
| .Ip "\f(CW\*(C`\-\-no\-default\-excludes\*(C'\fR" 4 |
| .IX Item "--no-default-excludes" |
| When \f(CW\*(C`\-\-export\-all\-symbols\*(C'\fR is used, it will by default avoid |
| exporting certain special symbols. The current list of symbols to avoid |
| exporting is \fBDllMain@12\fR, \fBDllEntryPoint@0\fR, |
| \&\fBimpure_ptr\fR. You may use the \f(CW\*(C`\-\-no\-default\-excludes\*(C'\fR option |
| to go ahead and export these special symbols. This is only meaningful |
| when \f(CW\*(C`\-\-export\-all\-symbols\*(C'\fR is used. |
| .Ip "\f(CW\*(C`\-S \f(CIpath\f(CW\*(C'\fR" 4 |
| .IX Item "-S path" |
| .Ip "\f(CW\*(C`\-\-as \f(CIpath\f(CW\*(C'\fR" 4 |
| .IX Item "--as path" |
| Specifies the path, including the filename, of the assembler to be used |
| to create the exports file. |
| .Ip "\f(CW\*(C`\-f \f(CIswitches\f(CW\*(C'\fR" 4 |
| .IX Item "-f switches" |
| .Ip "\f(CW\*(C`\-\-as\-flags \f(CIswitches\f(CW\*(C'\fR" 4 |
| .IX Item "--as-flags switches" |
| Specifies any specific command line switches to be passed to the |
| assembler when building the exports file. This option will work even if |
| the \fB\-S\fR option is not used. This option only takes one argument, |
| and if it occurs more than once on the command line, then later |
| occurrences will override earlier occurrences. So if it is necessary to |
| pass multiple switches to the assembler they should be enclosed in |
| double quotes. |
| .Ip "\f(CW\*(C`\-D \f(CIname\f(CW\*(C'\fR" 4 |
| .IX Item "-D name" |
| .Ip "\f(CW\*(C`\-\-dll\-name \f(CIname\f(CW\*(C'\fR" 4 |
| .IX Item "--dll-name name" |
| Specifies the name to be stored in the .def file as the name of the \s-1DLL\s0 |
| when the \fB\-e\fR option is used. If this option is not present, then |
| the filename given to the \fB\-e\fR option will be used as the name of |
| the \s-1DLL\s0. |
| .Ip "\f(CW\*(C`\-m \f(CImachine\f(CW\*(C'\fR" 4 |
| .IX Item "-m machine" |
| .Ip "\f(CW\*(C`\-machine \f(CImachine\f(CW\*(C'\fR" 4 |
| .IX Item "-machine machine" |
| Specifies the type of machine for which the library file should be |
| built. \f(CW\*(C`dlltool\*(C'\fR has a built in default type, depending upon how |
| it was created, but this option can be used to override that. This is |
| normally only useful when creating DLLs for an \s-1ARM\s0 processor, when the |
| contents of the \s-1DLL\s0 are actually encode using \s-1THUMB\s0 instructions. |
| .Ip "\f(CW\*(C`\-a\*(C'\fR" 4 |
| .IX Item "-a" |
| .Ip "\f(CW\*(C`\-\-add\-indirect\*(C'\fR" 4 |
| .IX Item "--add-indirect" |
| Specifies that when \f(CW\*(C`dlltool\*(C'\fR is creating the exports file it |
| should add a section which allows the exported functions to be |
| referenced without using the import library. Whatever the hell that |
| means! |
| .Ip "\f(CW\*(C`\-U\*(C'\fR" 4 |
| .IX Item "-U" |
| .Ip "\f(CW\*(C`\-\-add\-underscore\*(C'\fR" 4 |
| .IX Item "--add-underscore" |
| Specifies that when \f(CW\*(C`dlltool\*(C'\fR is creating the exports file it |
| should prepend an underscore to the names of the exported functions. |
| .Ip "\f(CW\*(C`\-k\*(C'\fR" 4 |
| .IX Item "-k" |
| .Ip "\f(CW\*(C`\-\-kill\-at\*(C'\fR" 4 |
| .IX Item "--kill-at" |
| Specifies that when \f(CW\*(C`dlltool\*(C'\fR is creating the exports file it |
| should not append the string \fB@ <number>\fR. These numbers are |
| called ordinal numbers and they represent another way of accessing the |
| function in a \s-1DLL\s0, other than by name. |
| .Ip "\f(CW\*(C`\-A\*(C'\fR" 4 |
| .IX Item "-A" |
| .Ip "\f(CW\*(C`\-\-add\-stdcall\-alias\*(C'\fR" 4 |
| .IX Item "--add-stdcall-alias" |
| Specifies that when \f(CW\*(C`dlltool\*(C'\fR is creating the exports file it |
| should add aliases for stdcall symbols without \fB@ <number>\fR |
| in addition to the symbols with \fB@ <number>\fR. |
| .Ip "\f(CW\*(C`\-x\*(C'\fR" 4 |
| .IX Item "-x" |
| .Ip "\f(CW\*(C`\-\-no\-idata4\*(C'\fR" 4 |
| .IX Item "--no-idata4" |
| Specifies that when \f(CW\*(C`dlltool\*(C'\fR is creating the exports and library |
| files it should omit the .idata4 section. This is for compatibility |
| with certain operating systems. |
| .Ip "\f(CW\*(C`\-c\*(C'\fR" 4 |
| .IX Item "-c" |
| .Ip "\f(CW\*(C`\-\-no\-idata5\*(C'\fR" 4 |
| .IX Item "--no-idata5" |
| Specifies that when \f(CW\*(C`dlltool\*(C'\fR is creating the exports and library |
| files it should omit the .idata5 section. This is for compatibility |
| with certain operating systems. |
| .Ip "\f(CW\*(C`\-i\*(C'\fR" 4 |
| .IX Item "-i" |
| .Ip "\f(CW\*(C`\-\-interwork\*(C'\fR" 4 |
| .IX Item "--interwork" |
| Specifies that \f(CW\*(C`dlltool\*(C'\fR should mark the objects in the library |
| file and exports file that it produces as supporting interworking |
| between \s-1ARM\s0 and \s-1THUMB\s0 code. |
| .Ip "\f(CW\*(C`\-n\*(C'\fR" 4 |
| .IX Item "-n" |
| .Ip "\f(CW\*(C`\-\-nodelete\*(C'\fR" 4 |
| .IX Item "--nodelete" |
| Makes \f(CW\*(C`dlltool\*(C'\fR preserve the temporary assembler files it used to |
| create the exports file. If this option is repeated then dlltool will |
| also preserve the temporary object files it uses to create the library |
| file. |
| .Ip "\f(CW\*(C`\-v\*(C'\fR" 4 |
| .IX Item "-v" |
| .Ip "\f(CW\*(C`\-\-verbose\*(C'\fR" 4 |
| .IX Item "--verbose" |
| Make dlltool describe what it is doing. |
| .Ip "\f(CW\*(C`\-h\*(C'\fR" 4 |
| .IX Item "-h" |
| .Ip "\f(CW\*(C`\-\-help\*(C'\fR" 4 |
| .IX Item "--help" |
| Displays a list of command line options and then exits. |
| .Ip "\f(CW\*(C`\-V\*(C'\fR" 4 |
| .IX Item "-V" |
| .Ip "\f(CW\*(C`\-\-version\*(C'\fR" 4 |
| .IX Item "--version" |
| Displays dlltool's version number and then exits. |
| .SH "SEE ALSO" |
| .IX Header "SEE ALSO" |
| the Info entries for \fIbinutils\fR. |
| .SH "COPYRIGHT" |
| .IX Header "COPYRIGHT" |
| Copyright (c) 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000, 2001 Free Software Foundation, Inc. |
| .PP |
| Permission is granted to copy, distribute and/or modify this document |
| under the terms of the \s-1GNU\s0 Free Documentation License, Version 1.1 |
| or any later version published by the Free Software Foundation; |
| with no Invariant Sections, with no Front-Cover Texts, and with no |
| Back-Cover Texts. A copy of the license is included in the |
| section entitled \*(L"\s-1GNU\s0 Free Documentation License\*(R". |