Parametry kompilatora GCC (efekt komendy "gcc -v --help")


The following options are language-independent:

  --help                      Display this information
  --param <param>=<value>     Set parameter <param> to value.  See below for a
                              complete list of parameters
  --target-help               This switch lacks documentation
  --version                   This switch lacks documentation
  -G<number>                  Put global and static data smaller than <number>
                              bytes into a special section (on some targets)
  -O<number>                  Set optimization level to <number>
  -Os                         Optimize for space rather than speed
  -W                          This switch is deprecated; use -Wextra instead
  -Waggregate-return          Warn about returning structures, unions or arrays
  -Wcast-align                Warn about pointer casts which increase alignment
  -Wdeprecated-declarations   Warn about uses of __attribute__((deprecated))
                              declarations
  -Wdisabled-optimization     Warn when an optimization pass is disabled
  -Werror                     Treat all warnings as errors
  -Wextra                     Print extra (possibly unwanted) warnings
  -Winline                    Warn when an inlined function cannot be inlined
  -Wlarger-than-<number>      Warn if an object is larger than <number> bytes
  -Wmissing-noreturn          Warn about functions which might be candidates
                              for __attribute__((noreturn))
  -Wpacked                    Warn when the packed attribute has no effect on
                              struct layout
  -Wpadded                    Warn when padding is required to align structure
                              members
  -Wshadow                    Warn when one local variable shadows another
  -Wstrict-aliasing           Warn about code which might break strict aliasing
                              rules
  -Wswitch                    Warn about enumerated switches, with no default,
                              missing a case
  -Wswitch-default            Warn about enumerated switches missing a
                              "default:" statement
  -Wswitch-enum               Warn about all enumerated switches missing a
                              specific case
  -Wsystem-headers            Do not suppress warnings from system headers
  -Wuninitialized             Warn about uninitialized automatic variables
  -Wunreachable-code          Warn about code that will never be executed
  -Wunused                    Enable all -Wunused- warnings
  -Wunused-function           Warn when a function is unused
  -Wunused-label              Warn when a label is unused
  -Wunused-parameter          Warn when a function parameter is unused
  -Wunused-value              Warn when an expression value is unused
  -Wunused-variable           Warn when a variable is unused
  -aux-info <file>            Emit declaration information into <file>
  -aux-info=                  This switch lacks documentation
  -auxbase                    This switch lacks documentation
  -auxbase-strip              This switch lacks documentation
  -d<letters>                 Enable dumps from specific passes of the compiler
  -dumpbase <file>            Set the file basename to be used for dumps
  -fPIC                       This switch lacks documentation
  -fPIE                       This switch lacks documentation
  -fabi-version=              This switch lacks documentation
  -falign-functions           Align the start of functions
  -falign-functions=          This switch lacks documentation
  -falign-jumps               Align labels which are only reached by jumping
  -falign-jumps=              This switch lacks documentation
  -falign-labels              Align all labels
  -falign-labels=             This switch lacks documentation
  -falign-loops               Align the start of loops
  -falign-loops=              This switch lacks documentation
  -fargument-alias            Specify that arguments may alias each other and
                              globals
  -fargument-noalias          Assume arguments may alias globals but not each
                              other
  -fargument-noalias-global   Assume arguments alias neither each other nor
                              globals
  -fasynchronous-unwind-tables Generate unwind tables that are exact at each
                              instruction boundary
  -fbounds-check              Generate code to check bounds before indexing
                              arrays
  -fbranch-count-reg          Replace add, compare, branch with branch on count
                              register
  -fbranch-probabilities      Use profiling information for branch probabilities
  -fbranch-target-load-optimize Perform branch target load optimization before
                              prologue / epilogue threading
  -fbranch-target-load-optimize2 Perform branch target load optimization after
                              prologue / epilogue threading
  -fcall-saved-<register>     Mark <register> as being preserved across
                              functions
  -fcall-used-<register>      Mark <register> as being corrupted by function
                              calls
  -fcaller-saves              Save registers around function calls
  -fcommon                    Do not put uninitialized globals in the common
                              section
  -fcprop-registers           Perform a register copy-propagation optimization
                              pass
  -fcrossjumping              Perform cross-jumping optimization
  -fcse-follow-jumps          When running CSE, follow jumps to their targets
  -fcse-skip-blocks           When running CSE, follow conditional jumps
  -fdata-sections             Place data items into their own section
  -fdefer-pop                 Defer popping functions args from stack until
                              later
  -fdelayed-branch            Attempt to fill delay slots of branch instructions
  -fdelete-null-pointer-checks Delete useless null pointer checks
  -fdiagnostics-show-location=[once|every-line] How often to emit source
                              location at the beginning of line-wrapped
                              diagnostics
  -fdump-unnumbered           Suppress output of instruction numbers and line
                              number notes in debugging dumps
  -feliminate-dwarf2-dups     Perform DWARF2 duplicate elimination
  -feliminate-unused-debug-symbols Perform unused type elimination in debug info
  -feliminate-unused-debug-types Perform unused type elimination in debug info
  -fexceptions                Enable exception handling
  -fexpensive-optimizations   Perform a number of minor, expensive optimizations
  -ffast-math                 This switch lacks documentation
  -ffinite-math-only          Assume no NaNs or infinities are generated
  -ffixed-<register>          Mark <register> as being unavailable to the
                              compiler
  -ffloat-store               Do not store floats in registers
  -fforce-addr                Copy memory address constants into registers
                              before use
  -fforce-mem                 Copy memory operands into registers before use
  -ffunction-cse              Allow function addresses to be held in registers
  -ffunction-sections         Place each function into its own section
  -fgcse                      Perform global common subexpression elimination
  -fgcse-las                  Perform redundant load after store elimination in
                              global common subexpression elimination
  -fgcse-lm                   Perform enhanced load motion during global common
                              subexpression elimination
  -fgcse-sm                   Perform store motion after global common
                              subexpression elimination
  -fguess-branch-probability  Enable guessing of branch probabilities
  -fident                     Process #ident directives
  -fif-conversion             Perform conversion of conditional jumps to
                              branchless equivalents
  -fif-conversion2            Perform conversion of conditional jumps to
                              conditional execution
  -finhibit-size-directive    Do not generate .size directives
  -finline                    Pay attention to the "inline" keyword
  -finline-functions          This switch lacks documentation
  -finline-limit-             This switch lacks documentation
  -finline-limit=<number>     Limit the size of inlined functions to <number>
  -finstrument-functions      Instrument function entry and exit with profiling
                              calls
  -fkeep-inline-functions     Generate code for functions even if they are
                              fully inlined
  -fkeep-static-consts        Emit static const variables even if they are not
                              used
  -fleading-underscore        Give external symbols a leading underscore
  -floop-optimize             Perform loop optimizations
  -fmath-errno                Set errno after built-in math functions
  -fmem-report                Report on permanent memory allocation
  -fmerge-all-constants       Attempt to merge identical constants and constant
                              variables
  -fmerge-constants           Attempt to merge identical constants across
                              compilation units
  -fmessage-length=<number>   Limit diagnostics to <number> characters per
                              line.  0 suppresses line-wrapping
  -fmove-all-movables         Force all loop invariant computations out of loops
  -fnew-ra                    Use graph-coloring register allocation
  -fnon-call-exceptions       Support synchronous non-call exceptions
  -fold-unroll-all-loops      Perform loop unrolling for all loops
  -fold-unroll-loops          Perform loop unrolling when iteration count is
                              known
  -fomit-frame-pointer        When possible do not generate stack frames
  -foptimize-register-move    Do the full register move optimization pass
  -foptimize-sibling-calls    Optimize sibling and tail recursive calls
  -fpack-struct               Pack structure members together without holes
  -fpcc-struct-return         Return small aggregates in memory, not registers
  -fpeel-loops                Perform loop peeling
  -fpeephole                  Enable machine specific peephole optimizations
  -fpeephole2                 Enable an RTL peephole pass before sched2
  -fpic                       Generate position-independent code if possible
  -fpie                       Generate position-independent code for
                              executables if possible
  -fprefetch-loop-arrays      Generate prefetch instructions, if available, for
                              arrays in loops
  -fprofile                   Enable basic program profiling code
  -fprofile-arcs              Insert arc-based program profiling code
  -fprofile-generate          Enable common options for generating profile info
                              for profile feedback directed optimizations
  -fprofile-use               Enable common options for performing profile
                              feedback directed optimizations
  -fprofile-values            Insert code to profile values of expressions
  -frandom-seed               This switch lacks documentation
  -frandom-seed=<string>      Make compile reproducible using <string>
  -freduce-all-givs           Strength reduce all loop general induction
                              variables
  -freg-struct-return         Return small aggregates in registers
  -fregmove                   Enables a register move optimization
  -frename-registers          Perform a register renaming optimization pass
  -freorder-blocks            Reorder basic blocks to improve code placement
  -freorder-functions         Reorder functions to improve code placement
  -frerun-cse-after-loop      Add a common subexpression elimination pass after
                              loop optimizations
  -frerun-loop-opt            Run the loop optimizer twice
  -frounding-math             Disable optimizations that assume default FP
                              rounding behavior
  -fsched-interblock          Enable scheduling across basic blocks
  -fsched-spec                Allow speculative motion of non-loads
  -fsched-spec-load           Allow speculative motion of some loads
  -fsched-spec-load-dangerous Allow speculative motion of more loads
  -fsched-stalled-insns       Allow premature scheduling of queued insns
  -fsched-stalled-insns-dep   Set dependence distance checking in premature
                              scheduling of queued insns
  -fsched-stalled-insns-dep=  -fsched-stalled-insns-dep=<number>   Set
                              dependence distance checking in premature
                              scheduling of queued insns
  -fsched-stalled-insns=      -fsched-stalled-insns=<number>       Set number
                              of queued insns that can be prematurely scheduled
  -fsched-verbose=<number>    Set the verbosity level of the scheduler
  -fsched2-use-superblocks    If scheduling post reload, do superblock
                              scheduling
  -fsched2-use-traces         If scheduling post reload, do trace scheduling
  -fschedule-insns            Reschedule instructions before register allocation
  -fschedule-insns2           Reschedule instructions after register allocation
  -fshared-data               Mark data as shared rather than private
  -fsignaling-nans            Disable optimizations observable by IEEE
                              signaling NaNs
  -fsingle-precision-constant Convert floating point constants to single
                              precision constants
  -fstack-check               Insert stack checking code into the program
  -fstack-limit               This switch lacks documentation
  -fstack-limit-register=<register> Trap if the stack goes past <register>
  -fstack-limit-symbol=<name> Trap if the stack goes past symbol <name>
  -fstrength-reduce           Perform strength reduction optimizations
  -fstrict-aliasing           Assume strict aliasing rules apply
  -fsyntax-only               Check for syntax errors, then stop
  -ftest-coverage             Create data files needed by "gcov"
  -fthread-jumps              Perform jump threading optimizations
  -ftime-report               Report the time taken by each compiler pass
  -ftls-model=[global-dynamic|local-dynamic|initial-exec|local-exec] Set the
                              default thread-local storage code generation model
  -ftracer                    Perform superblock formation via tail duplication
  -ftrapping-math             Assume floating-point operations can trap
  -ftrapv                     Trap for signed overflow in addition, subtraction
                              and multiplication
  -funit-at-a-time            Compile whole compilation unit at a time
  -funroll-all-loops          Perform loop unrolling for all loops
  -funroll-loops              Perform loop unrolling when iteration count is
                              known
  -funsafe-math-optimizations Allow math optimizations that may violate IEEE or
                              ISO standards
  -funswitch-loops            Perform loop unswitching
  -funwind-tables             Just generate unwind tables for exception handling
  -fverbose-asm               Add extra commentary to assembler output
  -fvpt                       Use expression value profiles in optimizations
  -fweb                       Construct webs and split unrelated uses of single
                              variable
  -fwrapv                     Assume signed arithmetic overflow wraps around
  -fwritable-strings          Store strings in writable data section
  -fzero-initialized-in-bss   Put zero initialized data in the bss section
  -g                          Generate debug information in default format
  -gcoff                      Generate debug information in COFF format
  -gdwarf-2                   Generate debug information in DWARF v2 format
  -ggdb                       Generate debug information in default extended
                              format
  -gstabs                     Generate debug information in STABS format
  -gstabs+                    Generate debug information in extended STABS
                              format
  -gvms                       Generate debug information in VMS format
  -gxcoff                     Generate debug information in XCOFF format
  -gxcoff+                    Generate debug information in extended XCOFF
                              format
  -m                          This switch lacks documentation
  -o <file>                   Place output into <file>
  -p                          Enable function profiling
  -pedantic                   Issue warnings needed for strict compliance to
                              the standard
  -pedantic-errors            Like -pedantic but issue them as errors
  -quiet                      Do not display functions compiled or elapsed time
  -version                    This switch lacks documentation
  -w                          Suppress warnings

The --param option recognizes the following as parameters:

  max-inline-insns-single     The maximum number of instructions in a single
                              function eligible for inlining
  max-inline-insns-auto       The maximum number of instructions when
                              automatically inlining
  max-inline-insns-rtl        The maximum number of instructions for the RTL
                              inliner
  max-delay-slot-insn-search  The maximum number of instructions to consider to
                              fill a delay slot
  max-delay-slot-live-search  The maximum number of instructions to consider to
                              find accurate live register information
  max-pending-list-length     The maximum length of scheduling's pending
                              operations list
  large-function-insns        The size of function body to be considered large
  large-function-growth       Maximal growth due to inlining of large function
                              (in percent)
  inline-unit-growth          how much can given compilation unit grow because
                              of the inlining (in percent)
  max-gcse-memory             The maximum amount of memory to be allocated by
                              GCSE
  max-gcse-passes             The maximum number of passes to make when doing
                              GCSE
  max-unrolled-insns          The maximum number of instructions to consider to
                              unroll in a loop
  max-average-unrolled-insns  The maximum number of instructions to consider to
                              unroll in a loop on average
  max-unroll-times            The maximum number of unrollings of a single loop
  max-peeled-insns            The maximum number of insns of a peeled loop
  max-peel-times              The maximum number of peelings of a single loop
  max-completely-peeled-insns The maximum number of insns of a completely
                              peeled loop
  max-completely-peel-times   The maximum number of peelings of a single loop
                              that is peeled completely
  max-once-peeled-insns       The maximum number of insns of a peeled loop that
                              rolls only once
  max-unswitch-insns          The maximum number of insns of an unswitched loop
  max-unswitch-level          The maximum number of unswitchings in a single
                              loop
  hot-bb-count-fraction       Select fraction of the maximal count of
                              repetitions of basic block in program given basic
                              block needs to have to be considered hot
  hot-bb-frequency-fraction   Select fraction of the maximal frequency of
                              executions of basic block in function given basic
                              block needs to have to be considered hot
  tracer-dynamic-coverage-feedback The percentage of function, weighted by
                              execution frequency, that must be covered by
                              trace formation. Used when profile feedback is
                              available
  tracer-dynamic-coverage     The percentage of function, weighted by execution
                              frequency, that must be covered by trace
                              formation. Used when profile feedback is not
                              available
  tracer-max-code-growth      Maximal code growth caused by tail duplication
                              (in percent)
  tracer-min-branch-ratio     Stop reverse growth if the reverse probability of
                              best edge is less than this threshold (in percent)
  tracer-min-branch-probability-feedback Stop forward growth if the probability
                              of best edge is less than this threshold (in
                              percent). Used when profile feedback is available
  tracer-min-branch-probability Stop forward growth if the probability of best
                              edge is less than this threshold (in percent).
                              Used when profile feedback is not available
  max-crossjump-edges         The maximum number of incoming edges to consider
                              for crossjumping
  max-cse-path-length         The maximum length of path considered in cse
  max-cselib-memory-locations The maximum memory locations recorded by cselib
  max-last-value-rtl          The maximum number of RTL nodes that can be
                              recorded as combiner's last value
  ggc-min-expand              Minimum heap expansion to trigger garbage
                              collection, as a percentage of the total size of
                              the heap
  ggc-min-heapsize            Minimum heap size before we start collecting
                              garbage, in kilobytes
  max-reload-search-insns     The maximum number of instructions to search
                              backward when looking for equivalent reload

The Ada front end recognizes the following options:

  -I                          This switch lacks documentation
  -Wall                       This switch lacks documentation
  -Wlong-long                 Do not warn about using "long long" when -pedantic
  -Wmissing-prototypes        Warn about global functions without prototypes
  -Wstrict-prototypes         Warn about unprototyped function declarations
  -Wwrite-strings             Give strings the type "array of char"
  -fRTS                       This switch lacks documentation
  -gnat<options>              Specify options to GNAT
  -nostdinc                   Do not search standard system include directories
                              (those specified with -isystem will still be used)
  -nostdlib                   This switch lacks documentation

The C front end recognizes the following options:

  -I, -Wall, -Wlong-long, -Wmissing-prototypes, -Wstrict-prototypes,
  -Wwrite-strings, -nostdinc

  --output-pch=               This switch lacks documentation
  -A<question>=<answer>       Assert the <answer> to <question>.  Putting '-'
                              before <question> disables the <answer> to
                              <question>
  -C                          Do not discard comments
  -CC                         Do not discard comments in macro expansions
  -D<macro>[=<val>]           Define a <macro> with <val> as its value.  If
                              just <macro> is given, <val> is taken to be 1
  -H                          Print the name of header files as they are used
  -M                          This switch lacks documentation
  -MD                         Generate make dependencies and compile
  -MF                         This switch lacks documentation
  -MG                         Treat missing header files as generated files
  -MM                         This switch lacks documentation
  -MMD                        Like -MD but ignore system header files
  -MP                         This switch lacks documentation
  -MQ <target>                Add a MAKE-quoted target
  -MT                         This switch lacks documentation
  -P                          Do not generate #line directives
  -U<macro>                   Undefine <macro>
  -Wbad-function-cast         Warn about casting functions to incompatible types
  -Wcast-qual                 Warn about casts which discard qualifiers
  -Wchar-subscripts           Warn about subscripts whose type is "char"
  -Wcomment                   This switch lacks documentation
  -Wcomments                  This switch lacks documentation
  -Wconversion                Warn about possibly confusing type conversions
  -Wdeclaration-after-statement Warn when a declaration is found after a
                              statement
  -Wdiv-by-zero               Warn about compile-time integer division by zero
  -Wendif-labels              Warn about stray tokens after #elif and #endif
  -Werror-implicit-function-declaration Make implicit function declarations an
                              error
  -Wfloat-equal               Warn if testing floating point numbers for
                              equality
  -Wformat                    Warn about printf/scanf/strftime/strfmon format
                              string anomalies
  -Wformat-extra-args         Warn if passing too many arguments to a function
                              for its format string
  -Wformat-nonliteral         Warn about format strings that are not literals
  -Wformat-security           Warn about possible security problems with format
                              functions
  -Wformat-y2k                Warn about strftime formats yielding 2-digit years
  -Wformat-zero-length        This switch lacks documentation
  -Wformat=                   This switch lacks documentation
  -Wimplicit                  This switch lacks documentation
  -Wimplicit-function-declaration Warn about implicit function declarations
  -Wimplicit-int              Warn when a declaration does not specify a type
  -Wimport                    This switch lacks documentation
  -Winit-self                 Warn about variables which are initialized to
                              themselves.
  -Winvalid-pch               Warn about PCH files that are found but not used
  -Wmain                      Warn about suspicious declarations of "main"
  -Wmissing-braces            Warn about possibly missing braces around
                              initializers
  -Wmissing-declarations      Warn about global functions without previous
                              declarations
  -Wmissing-format-attribute  Warn about functions which might be candidates
                              for format attributes
  -Wmultichar                 Warn about use of multi-character character
                              constants
  -Wnested-externs            Warn about "extern" declarations not at file scope
  -Wnonnull                   This switch lacks documentation
  -Wold-style-definition      Warn if an old-style parameter definition is used
  -Wparentheses               Warn about possibly missing parentheses
  -Wpointer-arith             Warn about function pointer arithmetic
  -Wredundant-decls           Warn about multiple declarations of the same
                              object
  -Wreturn-type               Warn whenever a function's return type defaults
                              to "int" (C), or about inconsistent return types
                              (C++)
  -Wsequence-point            Warn about possible violations of sequence point
                              rules
  -Wsign-compare              Warn about signed-unsigned comparisons
  -Wtraditional               Warn about features not present in traditional C
  -Wtrigraphs                 This switch lacks documentation
  -Wundef                     Warn if an undefined macro is used in an #if
                              directive
  -Wunknown-pragmas           Warn about unrecognized pragmas
  -Wunused-macros             Warn about macros defined in the main file that
                              are not used
  -ansi                       A synonym for -std=c89 (for C) or -std=c++98 (for
                              C++).
  -fasm                       Recognize the "asm" keyword
  -fbuiltin                   Recognize built-in functions
  -fbuiltin-                  This switch lacks documentation
  -fcond-mismatch             Allow the arguments of the '?' operator to have
                              different types
  -fdollars-in-identifiers    Permit '$' as an identifier character
  -fdump-                     This switch lacks documentation
  -fexec-charset=<cset>       Convert all strings and character constants to
                              character set <cset>
  -ffixed-form                This switch lacks documentation
  ffixed-line-length-<number> Set the maximum line length to <number>
  -ffreestanding              Do not assume that standard C libraries and
                              "main" exist
  -fhosted                    Assume normal C execution environment
  -finput-charset=            -finput-charset=<cset>      Specify the default
                              character set for source files.
  -fms-extensions             Don't warn about uses of Microsoft extensions
  -fpch-deps                  This switch lacks documentation
  -fpreprocessed              This switch lacks documentation
  -fshort-double              Use the same size for double as for float
  -fshort-enums               Use the narrowest integer type possible for
                              enumeration types
  -fshort-wchar               Force the underlying type for "wchar_t" to be
                              "unsigned short"
  -fshow-column               This switch lacks documentation
  -fsigned-bitfields          When "signed" or "unsigned" is not given make the
                              bitfield signed
  -fsigned-char               Make "char" signed by default
  -ftabstop=<number>          Distance between tab stops for column reporting
  -funsigned-bitfields        When "signed" or "unsigned" is not given make the
                              bitfield unsigned
  -funsigned-char             Make "char" unsigned by default
  -fwide-exec-charset=<cset>  Convert all wide strings and character constants
                              to character set <cset>
  -fworking-directory         Generate a #line directive pointing at the
                              current working directory
  -idirafter <dir>            Add <dir> to the end of the system include path
  -imacros <file>             Accept definition of macros in <file>
  -include <file>             Include the contents of <file> before other files
  -iprefix <path>             Specify <path> as a prefix for next two options
  -isysroot <dir>             Set <dir> to be the system root directory
  -isystem <dir>              Add <dir> to the start of the system include path
  -iwithprefix <dir>          Add <dir> to the end of the system include path
  -iwithprefixbefore <dir>    Add <dir> to the end of the main include path
  -remap                      Remap file names when including files
  -std=c89                    Conform to the ISO 1990 C standard
  -std=c99                    Conform to the ISO 1999 C standard
  -std=c9x                    Deprecated in favor of -std=c99
  -std=gnu89                  Conform to the ISO 1990 C standard with GNU
                              extensions
  -std=gnu99                  Conform to the ISO 1999 C standard with GNU
                              extensions
  -std=gnu9x                  Deprecated in favor of -std=gnu99
  -std=iso9899:1990           Conform to the ISO 1990 C standard
  -std=iso9899:199409         Conform to the ISO 1990 C standard as amended in
                              1994
  -std=iso9899:1999           Conform to the ISO 1999 C standard
  -std=iso9899:199x           Deprecated in favor of -std=iso9899:1999
  -traditional-cpp            Enable traditional preprocessing
  -trigraphs                  Support ISO C trigraphs
  -undef                      Do not predefine system-specific and GCC-specific
                              macros
  -v                          Enable verbose output

The C++ front end recognizes the following options:

  --output-pch=, -A, -C, -CC, -D, -H, -I, -M, -MD, -MF, -MG, -MM, -MMD, -MP, -MQ,
  -MT, -P, -U, -Wall, -Wcast-qual, -Wchar-subscripts, -Wcomment, -Wcomments,
  -Wconversion, -Wendif-labels, -Wfloat-equal, -Wformat, -Wformat-extra-args,
  -Wformat-nonliteral, -Wformat-security, -Wformat-y2k, -Wformat=, -Wimplicit,
  -Wimport, -Winit-self, -Winvalid-pch, -Wlong-long, -Wmissing-braces,
  -Wmissing-format-attribute, -Wmultichar, -Wparentheses, -Wpointer-arith,
  -Wredundant-decls, -Wreturn-type, -Wsign-compare, -Wtrigraphs, -Wundef,
  -Wunknown-pragmas, -Wunused-macros, -Wwrite-strings, -ansi, -fasm, -fbuiltin,
  -fbuiltin-, -fcond-mismatch, -fdollars-in-identifiers, -fdump-,
  -fexec-charset=, -finput-charset=, -fms-extensions, -fpch-deps, -fpreprocessed,
  -fshort-double, -fshort-enums, -fshort-wchar, -fshow-column,
  -fsigned-bitfields, -fsigned-char, -ftabstop=, -funsigned-bitfields,
  -funsigned-char, -fwide-exec-charset=, -fworking-directory, -idirafter,
  -imacros, -include, -iprefix, -isysroot, -isystem, -iwithprefix,
  -iwithprefixbefore, -nostdinc, -remap, -traditional-cpp, -trigraphs, -undef,
  -v

  -Wabi                       This switch lacks documentation
  -Wctor-dtor-privacy         Warn when all constructors and destructors are
                              private
  -Wdeprecated                Warn if deprecated class, method, or field is used
  -Weffc++                    Warn about violations of Effective C++ style rules
  -Winvalid-offsetof          Warn about invalid uses of the "offsetof" macro
  -Wnon-template-friend       Warn when non-templatized friend functions are
                              declared within a template
  -Wnon-virtual-dtor          Warn about non-virtual destructors
  -Wold-style-cast            Warn if a C-style cast is used in a program
  -Woverloaded-virtual        Warn about overloaded virtual function names
  -Wpmf-conversions           Warn when converting the type of pointers to
                              member functions
  -Wreorder                   Warn when the compiler reorders code
  -Wsign-promo                Warn when overload promotes from unsigned to
                              signed
  -Wsynth                     Warn when synthesis behavior differs from Cfront
  -faccess-control            Enforce class member access control semantics
  -fall-virtual               This switch lacks documentation
  -falt-external-templates    Change when template instances are emitted
  -fcheck-new                 Check the return value of new
  -fconserve-space            Reduce the size of object files
  -fconst-strings             Make string literals "const char[]" not "char[]"
  -fdefault-inline            Inline member functions by default
  -felide-constructors        This switch lacks documentation
  -fenforce-eh-specs          Generate code to check exception specifications
  -fenum-int-equiv            This switch lacks documentation
  -fexternal-templates        This switch lacks documentation
  -ffor-scope                 Scope of for-init-statement variables is local to
                              the loop
  -fgnu-keywords              Recognize GNU-defined keywords
  -fguiding-decls             This switch lacks documentation
  -fhandle-exceptions         This switch lacks documentation
  -fhonor-std                 This switch lacks documentation
  -fhuge-objects              Enable support for huge objects
  -fimplement-inlines         Export functions even if they can be inlined
  -fimplicit-inline-templates Emit implicit instantiations of inline templates
  -fimplicit-templates        Emit implicit instantiations of templates
  -flabels-ok                 This switch lacks documentation
  -fname-mangling-version-    This switch lacks documentation
  -fnew-abi                   This switch lacks documentation
  -fnonansi-builtins          This switch lacks documentation
  -fnonnull-objects           This switch lacks documentation
  -foperator-names            Recognize C++ kewords like "compl" and "xor"
  -foptional-diags            Enable optional diagnostics
  -fpermissive                Downgrade conformance errors to warnings
  -frepo                      Enable automatic template instantiation
  -frtti                      Generate run time type descriptor information
  -fsquangle                  This switch lacks documentation
  -fstats                     Display statistics accumulated during compilation
  -fstrict-prototype          This switch lacks documentation
  -ftemplate-depth-<number>   Specify maximum template instantiation depth
  -fthis-is-variable          This switch lacks documentation
  -fuse-cxa-atexit            Use __cxa_atexit to register destructors
  -fvtable-gc                 Discard unused virtual functions
  -fvtable-thunks             Implement vtables using thunks
  -fweak                      Emit common-like symbols as weak symbols
  -fxref                      Emit cross referencing information
  -nostdinc++                 Do not search standard system include directories
                              for C++
  -std=c++98                  Conform to the ISO 1998 C++ standard
  -std=gnu++98                Conform to the ISO 1998 C++ standard with GNU
                              extensions

The F77 front end recognizes the following options:

  -I, -Wall, -Wcomment, -Wcomments, -Wimplicit, -Wimport, -Wtrigraphs,
  -ffixed-form, -ffixed-line-length-, -fpreprocessed

  -Wglobals                   Enable warnings about inter-procedural problems
  -Wsurprising                Warn about constructs with surprising meanings
  -fautomatic                 Do not treat local variables and COMMON blocks as
                              if they were named in SAVE statements
  -fbackslash                 Backslashes in character and hollerith constants
                              are special (not C-style)
  -fbadu77-intrinsics-delete  Delete libU77 intrinsics with bad interfaces
  -fbadu77-intrinsics-disable Disable libU77 intrinsics with bad interfaces
  -fbadu77-intrinsics-enable  Enable libU77 intrinsics with bad interfaces
  -fbadu77-intrinsics-hide    Hide libU77 intrinsics with bad interfaces
  -fcase-initcap              Program written in strict mixed-case
  -fcase-lower                Compile as if program written in lowercase
  -fcase-preserve             Preserve case used in program
  -fcase-strict-lower         Program written in lowercase
  -fcase-strict-upper         Program written in uppercase
  -fcase-upper                Compile as if program written in uppercase
  -fdebug-kludge              Emit special debugging information for COMMON and
                              EQUIVALENCE (disabled)
  -fdollar-ok                 Allow '$' in symbol names
  -femulate-complex           Have front end emulate COMPLEX arithmetic to
                              avoid bugs
  -ff2c                       f2c-compatible code can be generated
  -ff2c-intrinsics-delete     Delete non-FORTRAN-77 intrinsics f2c supports
  -ff2c-intrinsics-disable    Disable non-FORTRAN-77 intrinsics f2c supports
  -ff2c-intrinsics-enable     Enable non-FORTRAN-77 intrinsics f2c supports
  -ff2c-intrinsics-hide       Hide non-FORTRAN-77 intrinsics f2c supports
  -ff2c-library               Unsupported; generate libf2c-calling code
  -ff66                       Program is written in typical FORTRAN 66 dialect
  -ff77                       Program is written in typical Unix-f77 dialect
  -ff90                       Program is written in Fortran-90-ish dialect
  -ff90-intrinsics-delete     Delete non-FORTRAN-77 intrinsics F90 supports
  -ff90-intrinsics-disable    Disable non-FORTRAN-77 intrinsics F90 supports
  -ff90-intrinsics-enable     Enable non-FORTRAN-77 intrinsics F90 supports
  -ff90-intrinsics-hide       Hide non-FORTRAN-77 intrinsics F90 supports
  -ff90-not-vxt               This switch lacks documentation
  -fflatten-arrays            Unsupported; affects code generation of arrays
  -ffortran-bounds-check      Generate code to check subscript and substring
                              bounds
  -ffree-form                 Program is written in Fortran-90-ish free form
  -fglobals                   Enable fatal diagnostics about inter-procedural
                              problems
  -fgnu-intrinsics-delete     Delete non-FORTRAN-77 intrinsics g77 supports
  -fgnu-intrinsics-disable    Disable non-FORTRAN 77 intrinsics F90 supports
  -fgnu-intrinsics-enable     Enable non-FORTRAN 77 intrinsics F90 supports
  -fgnu-intrinsics-hide       Hide non-FORTRAN 77 intrinsics F90 supports
  -finit-local-zero           Initialize local vars and arrays to zero
  -fintrin-case-any           Intrinsics letters in arbitrary cases
  -fintrin-case-initcap       Intrinsics spelled as e.g. SqRt
  -fintrin-case-lower         Intrinsics in lowercase
  -fintrin-case-upper         Intrinsics in uppercase
  -fmatch-case-any            Language keyword letters in arbitrary cases
  -fmatch-case-initcap        Language keywords spelled as e.g. IOStat
  -fmatch-case-lower          Language keywords in lowercase
  -fmatch-case-upper          Language keywords in uppercase
  -fmil-intrinsics-delete     Delete MIL-STD 1753 intrinsics
  -fmil-intrinsics-disable    Disable MIL-STD 1753 intrinsics
  -fmil-intrinsics-enable     Enable MIL-STD 1753 intrinsics
  -fmil-intrinsics-hide       Hide MIL-STD 1753 intrinsics
  -fonetrip                   Take at least one trip through each iterative DO
                              loop
  -fpedantic                  Warn about use of (only a few for now) Fortran
                              extensions
  -fsecond-underscore         Allow appending a second underscore to externals
  -fsilent                    Do not print names of program units as they are
                              compiled
  -fsource-case-lower         Internally convert most source to lowercase
  -fsource-case-preserve      Internally preserve source case
  -fsource-case-upper         Internally convert most source to uppercase
  -fsymbol-case-any           This switch lacks documentation
  -fsymbol-case-initcap       Symbol names spelled in mixed case
  -fsymbol-case-lower         Symbol names in lowercase
  -fsymbol-case-upper         Symbol names in uppercase
  -ftypeless-boz              Make prefix-radix non-decimal constants be
                              typeless
  -fugly                      Allow all ugly features
  -fugly-args                 Hollerith and typeless can be passed as arguments
  -fugly-assign               Allow ordinary copying of ASSIGN'ed vars
  -fugly-assumed              Dummy array dimensioned to (1) is assumed-size
  -fugly-comma                Trailing comma in procedure call denotes null
                              argument
  -fugly-complex              Allow REAL(Z) and AIMAG(Z) given DOUBLE COMPLEX Z
  -fugly-init                 Initialization via DATA and PARAMETER is not type-
                              compatible
  -fugly-logint               Allow INTEGER and LOGICAL interchangeability
  -funderscoring              Append underscores to externals
  -funix-intrinsics-delete    Delete libU77 intrinsics
  -funix-intrinsics-disable   Disable libU77 intrinsics
  -funix-intrinsics-enable    Enable libU77 intrinsics
  -funix-intrinsics-hide      Hide libU77 intrinsics
  -fversion                   Print g77-specific version information and run
                              internal tests
  -fvxt                       Program is written in VXT (Digital-like) FORTRAN
  -fvxt-intrinsics-delete     Delete non-FORTRAN-77 intrinsics VXT FORTRAN
                              supports
  -fvxt-intrinsics-disable    Disable non-FORTRAN-77 intrinsics VXT FORTRAN
                              supports
  -fvxt-intrinsics-enable     Enable non-FORTRAN-77 intrinsics VXT FORTRAN
                              supports
  -fvxt-intrinsics-hide       Hide non-FORTRAN-77 intrinsics VXT FORTRAN
                              supports
  -fvxt-not-f90               This switch lacks documentation
  -fxyzzy                     Print internal debugging-related information
  -fzeros                     Treat initial values of 0 like non-zero values

The Java front end recognizes the following options:

  -I, -M, -MF, -MM, -MP, -MT, -Wall, -Wdeprecated, -fdump-

  -Wextraneous-semicolon      Warn if deprecated empty statements are found
  -Wout-of-date               Warn if .class files are out of date
  -Wredundant-modifiers       Warn if modifiers are specified when not necessary
  --CLASSPATH                 Deprecated; use --classpath instead
  -fassert                    This switch lacks documentation
  -fassume-compiled           This switch lacks documentation
  -fassume-compiled=          This switch lacks documentation
  --bootclasspath=<path>      Replace system path
  -fcheck-references          This switch lacks documentation
  --classpath=<path>          Set class path
  -fcompile-resource=         This switch lacks documentation
  -femit-class-file           This switch lacks documentation
  -femit-class-files          This switch lacks documentation
  --encoding=<encoding>       Choose input encoding (defaults from your locale)
  -fextdirs=                  This switch lacks documentation
  -ffilelist-file             This switch lacks documentation
  -fforce-classes-archive-check Always check for non gcj generated classes
                              archives
  -fhash-synchronization      This switch lacks documentation
  -findirect-dispatch         Use offset tables for virtual method calls
  -fjni                       Assume native functions are implemented using JNI
  -foptimize-static-class-initialization Enable optimization of static class
                              initialization code
  -foutput-class-dir=         This switch lacks documentation
  -fstore-check               Enable assignability checks for stores into
                              object arrays
  -fuse-boehm-gc              This switch lacks documentation
  -fuse-divide-subroutine     This switch lacks documentation

The ObjC front end recognizes the following options:

  --output-pch=, -A, -C, -CC, -D, -H, -I, -M, -MD, -MF, -MG, -MM, -MMD, -MP, -MQ,
  -MT, -P, -U, -Wall, -Wbad-function-cast, -Wcast-qual, -Wchar-subscripts,
  -Wcomment, -Wcomments, -Wconversion, -Wdeclaration-after-statement,
  -Wdiv-by-zero, -Wendif-labels, -Werror-implicit-function-declaration,
  -Wfloat-equal, -Wformat, -Wformat-extra-args, -Wformat-nonliteral,
  -Wformat-security, -Wformat-y2k, -Wformat-zero-length, -Wformat=, -Wimplicit,
  -Wimplicit-function-declaration, -Wimplicit-int, -Wimport, -Winit-self,
  -Winvalid-pch, -Wlong-long, -Wmain, -Wmissing-braces, -Wmissing-declarations,
  -Wmissing-format-attribute, -Wmissing-prototypes, -Wmultichar,
  -Wnested-externs, -Wnonnull, -Wold-style-definition, -Wparentheses,
  -Wpointer-arith, -Wredundant-decls, -Wreturn-type, -Wsequence-point,
  -Wsign-compare, -Wstrict-prototypes, -Wtraditional, -Wtrigraphs, -Wundef,
  -Wunknown-pragmas, -Wunused-macros, -Wwrite-strings, -ansi, -fasm, -fbuiltin,
  -fbuiltin-, -fcond-mismatch, -fdollars-in-identifiers, -fdump-,
  -fexec-charset=, -ffixed-form, -ffixed-line-length-, -ffreestanding, -fhosted,
  -finput-charset=, -fms-extensions, -fpch-deps, -fpreprocessed, -fshort-double,
  -fshort-enums, -fshort-wchar, -fshow-column, -fsigned-bitfields, -fsigned-char,
  -ftabstop=, -funsigned-bitfields, -funsigned-char, -fwide-exec-charset=,
  -fworking-directory, -idirafter, -imacros, -include, -iprefix, -isysroot,
  -isystem, -iwithprefix, -iwithprefixbefore, -nostdinc, -remap, -std=c89,
  -std=c99, -std=c9x, -std=gnu89, -std=gnu99, -std=gnu9x, -std=iso9899:1990,
  -std=iso9899:199409, -std=iso9899:1999, -std=iso9899:199x, -traditional-cpp,
  -trigraphs, -undef, -v

  -Wprotocol                  Warn if inherited methods are unimplemented
  -Wselector                  Warn if a selector has multiple methods
  -Wundeclared-selector       This switch lacks documentation
  -fconst-string-class=<name> Use class <name> for constant strings
  -fgnu-runtime               Generate code for GNU runtime environment
  -fnext-runtime              Generate code for NeXT (Apple Mac OS X) runtime
                              environment
  -fnil-receivers             Assume that receivers of Objective-C messages may
                              be nil
  -fobjc-exceptions           Enable Objective-C exception and synchronization
                              syntax
  -freplace-objc-classes      Used in Fix-and-Continue mode to indicate that
                              object files may be swapped in at runtime
  -fzero-link                 Generate lazy class lookup (via objc_getClass())
                              for use in Zero-Link mode
  -gen-decls                  Dump declarations to a .decl file
  -print-objc-runtime-info    Generate C header of platform-specific features

The ObjC++ front end recognizes the following options:

  --output-pch=, -A, -C, -CC, -D, -H, -I, -M, -MD, -MF, -MG, -MM, -MMD, -MP, -MQ,
  -MT, -P, -U, -Wabi, -Wall, -Wcast-qual, -Wchar-subscripts, -Wcomment,
  -Wcomments, -Wconversion, -Wctor-dtor-privacy, -Wdeprecated, -Weffc++,
  -Wendif-labels, -Wfloat-equal, -Wformat, -Wformat-extra-args,
  -Wformat-nonliteral, -Wformat-security, -Wformat-y2k, -Wformat=, -Wimplicit,
  -Wimport, -Winit-self, -Winvalid-offsetof, -Winvalid-pch, -Wlong-long,
  -Wmissing-braces, -Wmissing-format-attribute, -Wmultichar,
  -Wnon-template-friend, -Wnon-virtual-dtor, -Wold-style-cast,
  -Woverloaded-virtual, -Wparentheses, -Wpmf-conversions, -Wpointer-arith,
  -Wprotocol, -Wredundant-decls, -Wreorder, -Wreturn-type, -Wselector,
  -Wsign-compare, -Wsign-promo, -Wsynth, -Wtrigraphs, -Wundeclared-selector,
  -Wundef, -Wunknown-pragmas, -Wunused-macros, -Wwrite-strings, -ansi,
  -faccess-control, -fall-virtual, -falt-external-templates, -fasm, -fbuiltin,
  -fbuiltin-, -fcheck-new, -fcond-mismatch, -fconserve-space, -fconst-strings,
  -fconstant-string-class=, -fdefault-inline, -fdollars-in-identifiers, -fdump-,
  -felide-constructors, -fenforce-eh-specs, -fenum-int-equiv, -fexec-charset=,
  -fexternal-templates, -ffor-scope, -fgnu-keywords, -fgnu-runtime,
  -fguiding-decls, -fhandle-exceptions, -fhonor-std, -fhuge-objects,
  -fimplement-inlines, -fimplicit-inline-templates, -fimplicit-templates,
  -finput-charset=, -flabels-ok, -fms-extensions, -fname-mangling-version-,
  -fnew-abi, -fnext-runtime, -fnil-receivers, -fnonansi-builtins,
  -fnonnull-objects, -fobjc-exceptions, -foperator-names, -foptional-diags,
  -fpch-deps, -fpermissive, -fpreprocessed, -freplace-objc-classes, -frepo,
  -frtti, -fshort-double, -fshort-enums, -fshort-wchar, -fshow-column,
  -fsigned-bitfields, -fsigned-char, -fsquangle, -fstats, -fstrict-prototype,
  -ftabstop=, -ftemplate-depth-, -fthis-is-variable, -funsigned-bitfields,
  -funsigned-char, -fuse-cxa-atexit, -fvtable-gc, -fvtable-thunks, -fweak,
  -fwide-exec-charset=, -fworking-directory, -fxref, -fzero-link, -gen-decls,
  -idirafter, -imacros, -include, -iprefix, -isysroot, -isystem, -iwithprefix,
  -iwithprefixbefore, -nostdinc, -nostdinc++, -print-objc-runtime-info, -remap,
  -std=c++98, -std=gnu++98, -traditional-cpp, -trigraphs, -undef, -v



Target specific options:
  -mthreads                 Use Mingw-specific thread support
  -mnop-fun-dllimport       Ignore dllimport for functions
  -mdll                     Generate code for a DLL
  -mconsole                 Create console application
  -mwin32                   Set Windows defines
  -mno-win32                Don't set Windows defines
  -mwindows                 Create GUI application
  -mno-cygwin               Use the Mingw32 interface
  -mcygwin                  Use the Cygwin interface
  -mno-tls-direct-seg-refs  Do not use direct references against %gs when accessing tls data
  -mtls-direct-seg-refs     Use direct references against %gs when accessing tls data
  -mno-red-zone             Do not use red-zone in the x86-64 code
  -mred-zone                Use red-zone in the x86-64 code
  -mno-ms-bitfields         Use gcc default bitfield layout
  -mms-bitfields            Use native (MS) bitfield layout
  -m32                      Generate 32bit i386 code
  -m64                      Generate 64bit x86-64 code
  -m96bit-long-double       sizeof(long double) is 12
  -m128bit-long-double      sizeof(long double) is 16
  -mno-sse3                 Do not support MMX, SSE, SSE2 and SSE3 built-in functions and code generation
  -msse3                    Support MMX, SSE, SSE2 and SSE3 built-in functions and code generation
  -mno-sse2                 Do not support MMX, SSE and SSE2 built-in functions and code generation
  -msse2                    Support MMX, SSE and SSE2 built-in functions and code generation
  -mno-sse                  Do not support MMX and SSE built-in functions and code generation
  -msse                     Support MMX and SSE built-in functions and code generation
  -mno-3dnow                Do not support 3DNow! built-in functions
  -m3dnow                   Support 3DNow! built-in functions
  -mno-mmx                  Do not support MMX built-in functions
  -mmmx                     Support MMX built-in functions
  -mno-accumulate-outgoing-args Do not use push instructions to save outgoing arguments
  -maccumulate-outgoing-args Use push instructions to save outgoing arguments
  -mno-push-args            Do not use push instructions to save outgoing arguments
  -mpush-args               Use push instructions to save outgoing arguments
  -mno-inline-all-stringops Do not inline all known string operations
  -minline-all-stringops    Inline all known string operations
  -mno-align-stringops      Do not align destination of the string operations
  -malign-stringops         Align destination of the string operations
  -mstack-arg-probe         Enable stack probing
  -momit-leaf-frame-pointer Omit the frame pointer in leaf functions
  -mfancy-math-387          Generate sin, cos, sqrt for FPU
  -mno-fancy-math-387       Do not generate sin, cos, sqrt for FPU
  -mno-fp-ret-in-387        Do not return values of functions in FPU registers
  -mfp-ret-in-387           Return values of functions in FPU registers
  -mno-ieee-fp              Do not use IEEE math for fp comparisons
  -mieee-fp                 Use IEEE math for fp comparisons
  -mno-svr3-shlib           Uninitialized locals in .data
  -msvr3-shlib              Uninitialized locals in .bss
  -mno-align-double         Align doubles on word boundary
  -malign-double            Align some doubles on dword boundary
  -mno-rtd                  Use normal calling convention
  -mrtd                     Alternate calling convention
  -mno-soft-float           Use hardware fp
  -msoft-float              Do not use hardware fp
  -mhard-float              Use hardware fp
  -mno-80387                Do not use hardware fp
  -m80387                   Use hardware fp
  -mtls-dialect=            Use given thread-local storage dialect
  -masm=                    Use given assembler dialect
  -mcmodel=                 Use given x86-64 code model
  -mbranch-cost=            Branches are this expensive (1-5, arbitrary units)
  -mpreferred-stack-boundary= Attempt to keep stack aligned to this power of 2
  -malign-functions=        Function starts are aligned to this power of 2
  -malign-jumps=            Jump targets are aligned to this power of 2
  -malign-loops=            Loop code aligned to this power of 2
  -mregparm=                Number of registers used to pass integer arguments
  -march=                   Generate code for given CPU
  -mfpmath=                 Generate floating point mathematics using given instruction set
  -mtune=                   Schedule code for given CPU

There are undocumented target specific options as well.
Usage: C:\MinGW\bin\..\lib\gcc\mingw32\3.4.5\..\..\..\..\mingw32\bin\as.exe [option...] [asmfile...]
Options:
  -a[sub-option...]	  turn on listings
                      	  Sub-options [default hls]:
                      	  c      omit false conditionals
                      	  d      omit debugging directives
                      	  h      include high-level source
                      	  l      include assembly
                      	  m      include macro expansions
                      	  n      omit forms processing
                      	  s      include symbols
                      	  =FILE  list to FILE (must be last sub-option)
  --alternate             initially turn on alternate macro syntax
  -D                      produce assembler debugging messages
  --defsym SYM=VAL        define symbol SYM to given value
  -f                      skip whitespace and comment preprocessing
  -g --gen-debug          generate debugging information
  --gstabs                generate STABS debugging information
  --gstabs+               generate STABS debug info with GNU extensions
  --gdwarf-2              generate DWARF2 debugging information
  --hash-size=<value>     set the hash table size close to <value>
  --help                  show this message and exit
  --target-help           show target specific options
  -I DIR                  add DIR to search list for .include directives
  -J                      don't warn about signed overflow
  -K                      warn when differences altered for long displacements
  -L,--keep-locals        keep local symbols (e.g. starting with `L')
  -M,--mri                assemble in MRI compatibility mode
  --MD FILE               write dependency information in FILE (default none)
  -nocpp                  ignored
  -o OBJFILE              name the object-file output OBJFILE (default a.out)
  -R                      fold data section into text section
  --reduce-memory-overheads 
                          prefer smaller memory use at the cost of longer
                          assembly times
  --statistics            print various measured statistics from execution
  --strip-local-absolute  strip local absolute symbols
  --traditional-format    Use same format as native assembler when possible
  --version               print assembler version number and exit
  -W  --no-warn           suppress warnings
  --warn                  don't suppress warnings
  --fatal-warnings        treat warnings as errors
  --itbl INSTTBL          extend instruction set to include instructions
                          matching the specifications defined in file INSTTBL
  -w                      ignored
  -X                      ignored
  -Z                      generate object file even after errors
  --listing-lhs-width     set the width in words of the output data column of
                          the listing
  --listing-lhs-width2    set the width in words of the continuation lines
                          of the output data column; ignored if smaller than
                          the width of the first line
  --listing-rhs-width     set the max width in characters of the lines from
                          the source file
  --listing-cont-lines    set the maximum number of continuation lines used
                          for the output data column of the listing
  @FILE                   read options from FILE
  -n                      Do not optimize code alignment
  -q                      quieten some warnings
  --divide                ignored
  -march=CPU/-mtune=CPU   generate code/optimize for CPU, where CPU is one of:
                           i386, i486, pentium, pentiumpro, pentium4, nocona,
			   yonah, merom, k6, athlon, k8, generic32, generic64

Report bugs to <URL:http://www.sourceware.org/bugzilla/>
Usage: gcc [options] file...
Options:
  -pass-exit-codes         Exit with highest error code from a phase
  --help                   Display this information
  --target-help            Display target specific command line options
  -dumpspecs               Display all of the built in spec strings
  -dumpversion             Display the version of the compiler
  -dumpmachine             Display the compiler's target processor
  -print-search-dirs       Display the directories in the compiler's search path
  -print-libgcc-file-name  Display the name of the compiler's companion library
  -print-file-name=<lib>   Display the full path to library <lib>
  -print-prog-name=<prog>  Display the full path to compiler component <prog>
  -print-multi-directory   Display the root directory for versions of libgcc
  -print-multi-lib         Display the mapping between command line options and
                           multiple library search directories
  -print-multi-os-directory Display the relative path to OS libraries
  -Wa,<options>            Pass comma-separated <options> on to the assembler
  -Wp,<options>            Pass comma-separated <options> on to the preprocessor
  -Wl,<options>            Pass comma-separated <options> on to the linker
  -Xassembler <arg>        Pass <arg> on to the assembler
  -Xpreprocessor <arg>     Pass <arg> on to the preprocessor
  -Xlinker <arg>           Pass <arg> on to the linker
  -save-temps              Do not delete intermediate files
  -pipe                    Use pipes rather than intermediate files
  -time                    Time the execution of each subprocess
  -specs=<file>            Override built-in specs with the contents of <file>
  -std=<standard>          Assume that the input sources are for <standard>
  -B <directory>           Add <directory> to the compiler's search paths
  -b <machine>             Run gcc for target <machine>, if installed
  -V <version>             Run gcc version number <version>, if installed
  -v                       Display the programs invoked by the compiler
  -###                     Like -v but options quoted and commands not executed
  -E                       Preprocess only; do not compile, assemble or link
  -S                       Compile only; do not assemble or link
  -c                       Compile and assemble, but do not link
  -o <file>                Place the output into <file>
  -x <language>            Specify the language of the following input files
                           Permissible languages include: c c++ assembler none
                           'none' means revert to the default behavior of
                           guessing the language based on the file's extension

Options starting with -g, -f, -m, -O, -W, or --param are automatically
 passed on to the various sub-processes invoked by gcc.  In order to pass
 other options on to these processes the -W<letter> options must be used.

For bug reporting instructions, please see:
<URL:http://www.mingw.org/bugs.shtml>
