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+.\" ========================================================================
+.\"
+.IX Title "DLLTOOL 1"
+.TH DLLTOOL 1 "2008-09-10" "binutils-2.18.90" "GNU Development Tools"
+.SH "NAME"
+dlltool \- Create files needed to build and use DLLs.
+.SH "SYNOPSIS"
+.IX Header "SYNOPSIS"
+dlltool [\fB\-d\fR|\fB\-\-input\-def\fR \fIdef-file-name\fR]
+ [\fB\-b\fR|\fB\-\-base\-file\fR \fIbase-file-name\fR]
+ [\fB\-e\fR|\fB\-\-output\-exp\fR \fIexports-file-name\fR]
+ [\fB\-z\fR|\fB\-\-output\-def\fR \fIdef-file-name\fR]
+ [\fB\-l\fR|\fB\-\-output\-lib\fR \fIlibrary-file-name\fR]
+ [\fB\-\-export\-all\-symbols\fR] [\fB\-\-no\-export\-all\-symbols\fR]
+ [\fB\-\-exclude\-symbols\fR \fIlist\fR]
+ [\fB\-\-no\-default\-excludes\fR]
+ [\fB\-S\fR|\fB\-\-as\fR \fIpath-to-assembler\fR] [\fB\-f\fR|\fB\-\-as\-flags\fR \fIoptions\fR]
+ [\fB\-D\fR|\fB\-\-dllname\fR \fIname\fR] [\fB\-m\fR|\fB\-\-machine\fR \fImachine\fR]
+ [\fB\-a\fR|\fB\-\-add\-indirect\fR]
+ [\fB\-U\fR|\fB\-\-add\-underscore\fR] [\fB\-\-add\-stdcall\-underscore\fR]
+ [\fB\-k\fR|\fB\-\-kill\-at\fR] [\fB\-A\fR|\fB\-\-add\-stdcall\-alias\fR]
+ [\fB\-p\fR|\fB\-\-ext\-prefix\-alias\fR \fIprefix\fR]
+ [\fB\-x\fR|\fB\-\-no\-idata4\fR] [\fB\-c\fR|\fB\-\-no\-idata5\fR] [\fB\-i\fR|\fB\-\-interwork\fR]
+ [\fB\-n\fR|\fB\-\-nodelete\fR] [\fB\-t\fR|\fB\-\-temp\-prefix\fR \fIprefix\fR]
+ [\fB\-v\fR|\fB\-\-verbose\fR]
+ [\fB\-h\fR|\fB\-\-help\fR] [\fB\-V\fR|\fB\-\-version\fR]
+ [object\-file ...]
+.SH "DESCRIPTION"
+.IX Header "DESCRIPTION"
+\&\fBdlltool\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 \fB\-e\fR,
+\&\fB\-l\fR and \fB\-z\fR 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. \fBdlltool\fR can help with the creation of
+these files.
+.PP
+The first file is a \fI.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 \fBdlltool\fR can be used
+to create it using the \fB\-z\fR option. In this case \fBdlltool\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 \fI.def\fR 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
+.PP
+.Vb 1
+\& int my_func (void) { ... }
+.Ve
+.PP
+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
+\&\fBdlltool\fR when it is creating or reading in a \fI.def\fR 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 \fI.def\fR file.
+.PP
+\&\fBdlltool\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 "\fB\-d\fR \fIfilename\fR" 4
+.IX Item "-d filename"
+.PD 0
+.IP "\fB\-\-input\-def\fR \fIfilename\fR" 4
+.IX Item "--input-def filename"
+.PD
+Specifies the name of a \fI.def\fR file to be read in and processed.
+.IP "\fB\-b\fR \fIfilename\fR" 4
+.IX Item "-b filename"
+.PD 0
+.IP "\fB\-\-base\-file\fR \fIfilename\fR" 4
+.IX Item "--base-file filename"
+.PD
+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 "\fB\-e\fR \fIfilename\fR" 4
+.IX Item "-e filename"
+.PD 0
+.IP "\fB\-\-output\-exp\fR \fIfilename\fR" 4
+.IX Item "--output-exp filename"
+.PD
+Specifies the name of the export file to be created by dlltool.
+.IP "\fB\-z\fR \fIfilename\fR" 4
+.IX Item "-z filename"
+.PD 0
+.IP "\fB\-\-output\-def\fR \fIfilename\fR" 4
+.IX Item "--output-def filename"
+.PD
+Specifies the name of the \fI.def\fR file to be created by dlltool.
+.IP "\fB\-l\fR \fIfilename\fR" 4
+.IX Item "-l filename"
+.PD 0
+.IP "\fB\-\-output\-lib\fR \fIfilename\fR" 4
+.IX Item "--output-lib filename"
+.PD
+Specifies the name of the library file to be created by dlltool.
+.IP "\fB\-\-export\-all\-symbols\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 \fB\-\-no\-default\-excludes\fR
+option. You may add to the list of symbols to not export by using the
+\&\fB\-\-exclude\-symbols\fR option.
+.IP "\fB\-\-no\-export\-all\-symbols\fR" 4
+.IX Item "--no-export-all-symbols"
+Only export symbols explicitly listed in an input \fI.def\fR 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 "\fB\-\-exclude\-symbols\fR \fIlist\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
+\&\fB\-\-export\-all\-symbols\fR is used.
+.IP "\fB\-\-no\-default\-excludes\fR" 4
+.IX Item "--no-default-excludes"
+When \fB\-\-export\-all\-symbols\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 \fB\-\-no\-default\-excludes\fR option
+to go ahead and export these special symbols. This is only meaningful
+when \fB\-\-export\-all\-symbols\fR is used.
+.IP "\fB\-S\fR \fIpath\fR" 4
+.IX Item "-S path"
+.PD 0
+.IP "\fB\-\-as\fR \fIpath\fR" 4
+.IX Item "--as path"
+.PD
+Specifies the path, including the filename, of the assembler to be used
+to create the exports file.
+.IP "\fB\-f\fR \fIoptions\fR" 4
+.IX Item "-f options"
+.PD 0
+.IP "\fB\-\-as\-flags\fR \fIoptions\fR" 4
+.IX Item "--as-flags options"
+.PD
+Specifies any specific command line options 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 options to the assembler they should be enclosed in
+double quotes.
+.IP "\fB\-D\fR \fIname\fR" 4
+.IX Item "-D name"
+.PD 0
+.IP "\fB\-\-dll\-name\fR \fIname\fR" 4
+.IX Item "--dll-name name"
+.PD
+Specifies the name to be stored in the \fI.def\fR 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 "\fB\-m\fR \fImachine\fR" 4
+.IX Item "-m machine"
+.PD 0
+.IP "\fB\-machine\fR \fImachine\fR" 4
+.IX Item "-machine machine"
+.PD
+Specifies the type of machine for which the library file should be
+built. \fBdlltool\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 Thumb instructions.
+.IP "\fB\-a\fR" 4
+.IX Item "-a"
+.PD 0
+.IP "\fB\-\-add\-indirect\fR" 4
+.IX Item "--add-indirect"
+.PD
+Specifies that when \fBdlltool\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 "\fB\-U\fR" 4
+.IX Item "-U"
+.PD 0
+.IP "\fB\-\-add\-underscore\fR" 4
+.IX Item "--add-underscore"
+.PD
+Specifies that when \fBdlltool\fR is creating the exports file it
+should prepend an underscore to the names of \fIall\fR exported symbols.
+.IP "\fB\-\-add\-stdcall\-underscore\fR" 4
+.IX Item "--add-stdcall-underscore"
+Specifies that when \fBdlltool\fR is creating the exports file it
+should prepend an underscore to the names of exported \fIstdcall\fR
+functions. Variable names and non-stdcall function names are not modified.
+This option is useful when creating GNU-compatible import libs for third
+party DLLs that were built with MS-Windows tools.
+.IP "\fB\-k\fR" 4
+.IX Item "-k"
+.PD 0
+.IP "\fB\-\-kill\-at\fR" 4
+.IX Item "--kill-at"
+.PD
+Specifies that when \fBdlltool\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 "\fB\-A\fR" 4
+.IX Item "-A"
+.PD 0
+.IP "\fB\-\-add\-stdcall\-alias\fR" 4
+.IX Item "--add-stdcall-alias"
+.PD
+Specifies that when \fBdlltool\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 "\fB\-p\fR" 4
+.IX Item "-p"
+.PD 0
+.IP "\fB\-\-ext\-prefix\-alias\fR \fIprefix\fR" 4
+.IX Item "--ext-prefix-alias prefix"
+.PD
+Causes \fBdlltool\fR to create external aliases for all \s-1DLL\s0
+imports with the specified prefix. The aliases are created for both
+external and import symbols with no leading underscore.
+.IP "\fB\-x\fR" 4
+.IX Item "-x"
+.PD 0
+.IP "\fB\-\-no\-idata4\fR" 4
+.IX Item "--no-idata4"
+.PD
+Specifies that when \fBdlltool\fR is creating the exports and library
+files it should omit the \f(CW\*(C`.idata4\*(C'\fR section. This is for compatibility
+with certain operating systems.
+.IP "\fB\-c\fR" 4
+.IX Item "-c"
+.PD 0
+.IP "\fB\-\-no\-idata5\fR" 4
+.IX Item "--no-idata5"
+.PD
+Specifies that when \fBdlltool\fR is creating the exports and library
+files it should omit the \f(CW\*(C`.idata5\*(C'\fR section. This is for compatibility
+with certain operating systems.
+.IP "\fB\-i\fR" 4
+.IX Item "-i"
+.PD 0
+.IP "\fB\-\-interwork\fR" 4
+.IX Item "--interwork"
+.PD
+Specifies that \fBdlltool\fR should mark the objects in the library
+file and exports file that it produces as supporting interworking
+between \s-1ARM\s0 and Thumb code.
+.IP "\fB\-n\fR" 4
+.IX Item "-n"
+.PD 0
+.IP "\fB\-\-nodelete\fR" 4
+.IX Item "--nodelete"
+.PD
+Makes \fBdlltool\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 "\fB\-t\fR \fIprefix\fR" 4
+.IX Item "-t prefix"
+.PD 0
+.IP "\fB\-\-temp\-prefix\fR \fIprefix\fR" 4
+.IX Item "--temp-prefix prefix"
+.PD
+Makes \fBdlltool\fR use \fIprefix\fR when constructing the names of
+temporary assembler and object files. By default, the temp file prefix
+is generated from the pid.
+.IP "\fB\-v\fR" 4
+.IX Item "-v"
+.PD 0
+.IP "\fB\-\-verbose\fR" 4
+.IX Item "--verbose"
+.PD
+Make dlltool describe what it is doing.
+.IP "\fB\-h\fR" 4
+.IX Item "-h"
+.PD 0
+.IP "\fB\-\-help\fR" 4
+.IX Item "--help"
+.PD
+Displays a list of command line options and then exits.
+.IP "\fB\-V\fR" 4
+.IX Item "-V"
+.PD 0
+.IP "\fB\-\-version\fR" 4
+.IX Item "--version"
+.PD
+Displays dlltool's version number and then exits.
+.IP "\fB@\fR\fIfile\fR" 4
+.IX Item "@file"
+Read command-line options from \fIfile\fR. The options read are
+inserted in place of the original @\fIfile\fR option. If \fIfile\fR
+does not exist, or cannot be read, then the option will be treated
+literally, and not removed.
+.Sp
+Options in \fIfile\fR are separated by whitespace. A whitespace
+character may be included in an option by surrounding the entire
+option in either single or double quotes. Any character (including a
+backslash) may be included by prefixing the character to be included
+with a backslash. The \fIfile\fR may itself contain additional
+@\fIfile\fR options; any such options will be processed recursively.
+.SH "SEE ALSO"
+.IX Header "SEE ALSO"
+The Info pages for \fIbinutils\fR.
+.SH "COPYRIGHT"
+.IX Header "COPYRIGHT"
+Copyright (c) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 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 1.2
+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".
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