re PR other/48179 (Reference mismatch in documentation chapter 6)
2011-03-23 Jonathan Wakely <jwakely.gcc@gmail.com> PR other/48179 PR other/48234 * doc/extend.texi (Alignment): Move section to match order in TOC. * doc/invoke.texi (i386 and x86-64 Windows Options): Likewise. From-SVN: r171365
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@ -1,3 +1,10 @@
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2011-03-23 Jonathan Wakely <jwakely.gcc@gmail.com>
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PR other/48179
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PR other/48234
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* doc/extend.texi (Alignment): Move section to match order in TOC.
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* doc/invoke.texi (i386 and x86-64 Windows Options): Likewise.
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2011-03-03 Uros Bizjak <ubizjak@gmail.com>
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* config/i386/sse.md (*avx_pmaddubsw128): Fix mode of VEC_SELECT RTX.
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@ -3649,42 +3649,6 @@ machines, typically because the target assembler does not allow them.
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You can use the sequence @samp{\e} in a string or character constant to
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stand for the ASCII character @key{ESC}.
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@node Alignment
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@section Inquiring on Alignment of Types or Variables
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@cindex alignment
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@cindex type alignment
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@cindex variable alignment
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The keyword @code{__alignof__} allows you to inquire about how an object
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is aligned, or the minimum alignment usually required by a type. Its
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syntax is just like @code{sizeof}.
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For example, if the target machine requires a @code{double} value to be
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aligned on an 8-byte boundary, then @code{__alignof__ (double)} is 8.
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This is true on many RISC machines. On more traditional machine
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designs, @code{__alignof__ (double)} is 4 or even 2.
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Some machines never actually require alignment; they allow reference to any
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data type even at an odd address. For these machines, @code{__alignof__}
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reports the smallest alignment that GCC will give the data type, usually as
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mandated by the target ABI.
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If the operand of @code{__alignof__} is an lvalue rather than a type,
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its value is the required alignment for its type, taking into account
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any minimum alignment specified with GCC's @code{__attribute__}
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extension (@pxref{Variable Attributes}). For example, after this
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declaration:
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@smallexample
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struct foo @{ int x; char y; @} foo1;
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@end smallexample
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@noindent
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the value of @code{__alignof__ (foo1.y)} is 1, even though its actual
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alignment is probably 2 or 4, the same as @code{__alignof__ (int)}.
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It is an error to ask for the alignment of an incomplete type.
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@node Variable Attributes
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@section Specifying Attributes of Variables
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@cindex attribute of variables
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@ -4615,6 +4579,42 @@ allows one to declare vector data types supported by the Sony/Toshiba/IBM SPU
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Language Extensions Specification. It is intended to support the
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@code{__vector} keyword.
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@node Alignment
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@section Inquiring on Alignment of Types or Variables
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@cindex alignment
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@cindex type alignment
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@cindex variable alignment
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The keyword @code{__alignof__} allows you to inquire about how an object
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is aligned, or the minimum alignment usually required by a type. Its
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syntax is just like @code{sizeof}.
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For example, if the target machine requires a @code{double} value to be
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aligned on an 8-byte boundary, then @code{__alignof__ (double)} is 8.
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This is true on many RISC machines. On more traditional machine
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designs, @code{__alignof__ (double)} is 4 or even 2.
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Some machines never actually require alignment; they allow reference to any
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data type even at an odd address. For these machines, @code{__alignof__}
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reports the smallest alignment that GCC will give the data type, usually as
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mandated by the target ABI.
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If the operand of @code{__alignof__} is an lvalue rather than a type,
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its value is the required alignment for its type, taking into account
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any minimum alignment specified with GCC's @code{__attribute__}
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extension (@pxref{Variable Attributes}). For example, after this
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declaration:
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@smallexample
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struct foo @{ int x; char y; @} foo1;
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@end smallexample
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@noindent
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the value of @code{__alignof__ (foo1.y)} is 1, even though its actual
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alignment is probably 2 or 4, the same as @code{__alignof__ (int)}.
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It is an error to ask for the alignment of an incomplete type.
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@node Inline
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@section An Inline Function is As Fast As a Macro
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@ -588,6 +588,10 @@ Objective-C and Objective-C++ Dialects}.
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-m32 -m64 -mlarge-data-threshold=@var{num} @gol
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-mfused-madd -mno-fused-madd -msse2avx}
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@emph{i386 and x86-64 Windows Options}
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@gccoptlist{-mconsole -mcygwin -mno-cygwin -mdll
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-mnop-fun-dllimport -mthread -mwin32 -mwindows}
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@emph{IA-64 Options}
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@gccoptlist{-mbig-endian -mlittle-endian -mgnu-as -mgnu-ld -mno-pic @gol
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-mvolatile-asm-stop -mregister-names -mno-sdata @gol
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@ -825,10 +829,6 @@ See RS/6000 and PowerPC Options.
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@emph{x86-64 Options}
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See i386 and x86-64 Options.
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@emph{i386 and x86-64 Windows Options}
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@gccoptlist{-mconsole -mcygwin -mno-cygwin -mdll
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-mnop-fun-dllimport -mthread -mwin32 -mwindows}
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@emph{Xstormy16 Options}
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@gccoptlist{-msim}
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@ -11551,6 +11551,71 @@ Generate code for the large model: This model makes no assumptions
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about addresses and sizes of sections.
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@end table
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@node i386 and x86-64 Windows Options
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@subsection i386 and x86-64 Windows Options
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@cindex i386 and x86-64 Windows Options
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These additional options are available for Windows targets:
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@table @gcctabopt
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@item -mconsole
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@opindex mconsole
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This option is available for Cygwin and MinGW targets. It
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specifies that a console application is to be generated, by
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instructing the linker to set the PE header subsystem type
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required for console applications.
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This is the default behaviour for Cygwin and MinGW targets.
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@item -mcygwin
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@opindex mcygwin
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This option is available for Cygwin targets. It specifies that
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the Cygwin internal interface is to be used for predefined
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preprocessor macros, C runtime libraries and related linker
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paths and options. For Cygwin targets this is the default behaviour.
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This option is deprecated and will be removed in a future release.
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@item -mno-cygwin
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@opindex mno-cygwin
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This option is available for Cygwin targets. It specifies that
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the MinGW internal interface is to be used instead of Cygwin's, by
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setting MinGW-related predefined macros and linker paths and default
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library options.
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This option is deprecated and will be removed in a future release.
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@item -mdll
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@opindex mdll
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This option is available for Cygwin and MinGW targets. It
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specifies that a DLL - a dynamic link library - is to be
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generated, enabling the selection of the required runtime
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startup object and entry point.
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@item -mnop-fun-dllimport
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@opindex mnop-fun-dllimport
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This option is available for Cygwin and MinGW targets. It
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specifies that the dllimport attribute should be ignored.
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@item -mthread
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@opindex mthread
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This option is available for MinGW targets. It specifies
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that MinGW-specific thread support is to be used.
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@item -mwin32
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@opindex mwin32
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This option is available for Cygwin and MinGW targets. It
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specifies that the typical Windows pre-defined macros are to
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be set in the pre-processor, but does not influence the choice
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of runtime library/startup code.
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@item -mwindows
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@opindex mwindows
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This option is available for Cygwin and MinGW targets. It
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specifies that a GUI application is to be generated by
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instructing the linker to set the PE header subsystem type
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appropriately.
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@end table
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See also under @ref{i386 and x86-64 Options} for standard options.
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@node IA-64 Options
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@subsection IA-64 Options
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@cindex IA-64 Options
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@ -15493,71 +15558,6 @@ is defined for compatibility with Diab.
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These are listed under @xref{i386 and x86-64 Options}.
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@node i386 and x86-64 Windows Options
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@subsection i386 and x86-64 Windows Options
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@cindex i386 and x86-64 Windows Options
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These additional options are available for Windows targets:
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@table @gcctabopt
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@item -mconsole
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@opindex mconsole
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This option is available for Cygwin and MinGW targets. It
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specifies that a console application is to be generated, by
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instructing the linker to set the PE header subsystem type
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required for console applications.
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This is the default behaviour for Cygwin and MinGW targets.
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@item -mcygwin
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@opindex mcygwin
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This option is available for Cygwin targets. It specifies that
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the Cygwin internal interface is to be used for predefined
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preprocessor macros, C runtime libraries and related linker
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paths and options. For Cygwin targets this is the default behaviour.
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This option is deprecated and will be removed in a future release.
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@item -mno-cygwin
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@opindex mno-cygwin
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This option is available for Cygwin targets. It specifies that
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the MinGW internal interface is to be used instead of Cygwin's, by
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setting MinGW-related predefined macros and linker paths and default
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library options.
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This option is deprecated and will be removed in a future release.
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@item -mdll
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@opindex mdll
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This option is available for Cygwin and MinGW targets. It
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specifies that a DLL - a dynamic link library - is to be
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generated, enabling the selection of the required runtime
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startup object and entry point.
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@item -mnop-fun-dllimport
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@opindex mnop-fun-dllimport
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This option is available for Cygwin and MinGW targets. It
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specifies that the dllimport attribute should be ignored.
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@item -mthread
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@opindex mthread
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This option is available for MinGW targets. It specifies
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that MinGW-specific thread support is to be used.
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@item -mwin32
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@opindex mwin32
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This option is available for Cygwin and MinGW targets. It
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specifies that the typical Windows pre-defined macros are to
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be set in the pre-processor, but does not influence the choice
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of runtime library/startup code.
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@item -mwindows
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@opindex mwindows
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This option is available for Cygwin and MinGW targets. It
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specifies that a GUI application is to be generated by
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instructing the linker to set the PE header subsystem type
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appropriately.
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@end table
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See also under @ref{i386 and x86-64 Options} for standard options.
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@node Xstormy16 Options
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@subsection Xstormy16 Options
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@cindex Xstormy16 Options
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