@item C Language Options
@xref{C Dialect Options,,Options Controlling C Dialect}.
-@gccoptlist{-ansi -std=@var{standard} -aux-info @var{filename} @gol
+@gccoptlist{-ansi -std=@var{standard} -fgnu89-inline @gol
+-aux-info @var{filename} @gol
-fno-asm -fno-builtin -fno-builtin-@var{function} @gol
-fhosted -ffreestanding -fopenmp -fms-extensions @gol
-trigraphs -no-integrated-cpp -traditional -traditional-cpp @gol
-dynamic -dynamiclib -exported_symbols_list @gol
-filelist -flat_namespace -force_cpusubtype_ALL @gol
-force_flat_namespace -headerpad_max_install_names @gol
+-iframework @gol
-image_base -init -install_name -keep_private_externs @gol
-multi_module -multiply_defined -multiply_defined_unused @gol
-noall_load -no_dead_strip_inits_and_terms @gol
-mpowerpc-gpopt -mno-powerpc-gpopt @gol
-mpowerpc-gfxopt -mno-powerpc-gfxopt @gol
-mmfcrf -mno-mfcrf -mpopcntb -mno-popcntb -mfprnd -mno-fprnd @gol
--mmfpgpr -mno-mfpgpr @gol
+-mcmpb -mno-cmpb -mmfpgpr -mno-mfpgpr -mdfp -mno-dfp @gol
-mnew-mnemonics -mold-mnemonics @gol
-mfull-toc -mminimal-toc -mno-fp-in-toc -mno-sum-in-toc @gol
-m64 -m32 -mxl-compat -mno-xl-compat -mpe @gol
@xref{Standards,,Language Standards Supported by GCC}, for details of
these standard versions.
+@item -fgnu89-inline
+@opindex fgnu89-inline
+The option @option{-fgnu89-inline} tells GCC to use the traditional
+GNU semantics for @code{inline} functions when in C99 mode.
+@xref{Inline,,An Inline Function is As Fast As a Macro}. This option
+is accepted and ignored by GCC versions 4.1.3 up to but not including
+4.3. In GCC versions 4.3 and later it changes the behavior of GCC in
+C99 mode. Using this option is roughly equivalent to adding the
+@code{gnu_inline} function attribute to all inline functions
+(@pxref{Function Attributes}).
+
+The option @option{-fno-gnu89-inline} explicitly tells GCC to use the
+C99 semantics for @code{inline} when in C99 or gnu99 mode (i.e., it
+specifies the default behavior). This option was first supported in
+GCC 4.3. This option is not supported in C89 or gnu89 mode.
+
+The preprocesor macros @code{__GNUC_GNU_INLINE__} and
+@code{__GNUC_STDC_INLINE__} may be used to check which semantics are
+in effect for @code{inline} functions. @xref{Common Predefined
+Macros,,,cpp.info,The C Preprocessor}.
+
@item -aux-info @var{filename}
@opindex aux-info
Output to the given filename prototyped declarations for all functions
The following built-in spec functions are provided:
@table @code
+@item @code{getenv}
+The @code{getenv} spec function takes two arguments: an environment
+variable name and a string. If the environment variable is not
+defined, a fatal error is issued. Otherwise, the return value is the
+value of the environment variable concatenated with the string. For
+example, if @env{TOPDIR} is defined as @file{/path/to/top}, then:
+
+@smallexample
+%:getenv(TOPDIR /include)
+@end smallexample
+
+expands to @file{/path/to/top/include}.
+
@item @code{if-exists}
The @code{if-exists} spec function takes one argument, an absolute
pathname to a file. If the file exists, @code{if-exists} returns the
the name of the framework and header.h is found in the
@samp{"PrivateHeaders"} or @samp{"Headers"} directory.
+@item -iframework@var{dir}
+@opindex iframework
+Like @option{-F} except the directory is a treated as a system
+directory. The main difference between this @option{-iframework} and
+@option{-F} is that with @option{-iframework} the compiler does not
+warn about constructs contained within header files found via
+@var{dir}. This option is valid only for the C family of languages.
+
@item -gused
@opindex -gused
Emit debugging information for symbols that are used. For STABS
@itemx -mno-popcntb
@itemx -mfprnd
@itemx -mno-fprnd
+@itemx -mcmpb
+@itemx -mno-cmpb
@itemx -mmfpgpr
@itemx -mno-mfpgpr
+@itemx -mdfp
+@itemx -mno-dfp
@opindex mpower
@opindex mno-power
@opindex mpower2
@opindex mno-popcntb
@opindex mfprnd
@opindex mno-fprnd
+@opindex mcmpb
+@opindex mno-cmpb
@opindex mmfpgpr
@opindex mno-mfpgpr
+@opindex mdfp
+@opindex mno-dfp
GCC supports two related instruction set architectures for the
RS/6000 and PowerPC@. The @dfn{POWER} instruction set are those
instructions supported by the @samp{rios} chip set used in the original
The @option{-mfprnd} option allows GCC to generate the FP round to
integer instructions implemented on the POWER5+ processor and other
processors that support the PowerPC V2.03 architecture.
+The @option{-mcmpb} option allows GCC to generate the compare bytes
+instruction implemented on the POWER6 processor and other processors
+that support the PowerPC V2.05 architecture.
The @option{-mmfpgpr} option allows GCC to generate the FP move to/from
general purpose register instructions implemented on the POWER6X
processor and other processors that support the extended PowerPC V2.05
architecture.
+The @option{-mdfp} option allows GCC to generate the decimal floating
+point instructions implemented on some POWER processors.
The @option{-mpowerpc64} option allows GCC to generate the additional
64-bit instructions that are found in the full PowerPC64 architecture
projects / gcc.git / blobdiff