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<a name="RISC_002dV_002dOptions"></a>
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<p>
Next: <a href="RISC_002dV_002dDirectives.html#RISC_002dV_002dDirectives" accesskey="n" rel="next">RISC-V-Directives</a>, Up: <a href="RISC_002dV_002dDependent.html#RISC_002dV_002dDependent" accesskey="u" rel="up">RISC-V-Dependent</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="AS-Index.html#AS-Index" title="Index" rel="index">Index</a>]</p>
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<hr>
<a name="RISC_002dV-Options"></a>
<h4 class="subsection">9.38.1 RISC-V Options</h4>

<p>The following table lists all available RISC-V specific options.
</p>
<dl compact="compact">
<dd>
<a name="index-_002dfpic-option_002c-RISC_002dV"></a>
</dd>
<dt><code>-fpic</code></dt>
<dt><code>-fPIC</code></dt>
<dd><p>Generate position-independent code
</p>
<a name="index-_002dfno_002dpic-option_002c-RISC_002dV"></a>
</dd>
<dt><code>-fno-pic</code></dt>
<dd><p>Don&rsquo;t generate position-independent code (default)
</p>
<a name="index-_002dmarch_003dISA-option_002c-RISC_002dV"></a>
</dd>
<dt><code>-march=ISA</code></dt>
<dd><p>Select the base isa, as specified by ISA.  For example -march=rv32ima.
If this option and the architecture attributes aren&rsquo;t set, then assembler
will check the default configure setting &ndash;with-arch=ISA.
</p>
<a name="index-_002dmisa_002dspec_003dISAspec-option_002c-RISC_002dV"></a>
</dd>
<dt><code>-misa-spec=ISAspec</code></dt>
<dd><p>Select the default isa spec version.  If the version of ISA isn&rsquo;t set
by -march, then assembler helps to set the version according to
the default chosen spec.  If this option isn&rsquo;t set, then assembler will
check the default configure setting &ndash;with-isa-spec=ISAspec.
</p>
<a name="index-_002dmpriv_002dspec_003dPRIVspec-option_002c-RISC_002dV"></a>
</dd>
<dt><code>-mpriv-spec=PRIVspec</code></dt>
<dd><p>Select the privileged spec version.  We can decide whether the CSR is valid or
not according to the chosen spec.  If this option and the privilege attributes
aren&rsquo;t set, then assembler will check the default configure setting
&ndash;with-priv-spec=PRIVspec.
</p>
<a name="index-_002dmabi_003dABI-option_002c-RISC_002dV"></a>
</dd>
<dt><code>-mabi=ABI</code></dt>
<dd><p>Selects the ABI, which is either &quot;ilp32&quot; or &quot;lp64&quot;, optionally followed
by &quot;f&quot;, &quot;d&quot;, or &quot;q&quot; to indicate single-precision, double-precision, or
quad-precision floating-point calling convention, or none to indicate
the soft-float calling convention.  Also, &quot;ilp32&quot; can optionally be followed
by &quot;e&quot; to indicate the RVE ABI, which is always soft-float.
</p>
<a name="index-_002dmrelax-option_002c-RISC_002dV"></a>
</dd>
<dt><code>-mrelax</code></dt>
<dd><p>Take advantage of linker relaxations to reduce the number of instructions
required to materialize symbol addresses. (default)
</p>
<a name="index-_002dmno_002drelax-option_002c-RISC_002dV"></a>
</dd>
<dt><code>-mno-relax</code></dt>
<dd><p>Don&rsquo;t do linker relaxations.
</p>
<a name="index-_002dmarch_002dattr-option_002c-RISC_002dV"></a>
</dd>
<dt><code>-march-attr</code></dt>
<dd><p>Generate the default contents for the riscv elf attribute section if the
.attribute directives are not set.  This section is used to record the
information that a linker or runtime loader needs to check compatibility.
This information includes ISA string, stack alignment requirement, unaligned
memory accesses, and the major, minor and revision version of privileged
specification.
</p>
<a name="index-_002dmno_002darch_002dattr-option_002c-RISC_002dV"></a>
</dd>
<dt><code>-mno-arch-attr</code></dt>
<dd><p>Don&rsquo;t generate the default riscv elf attribute section if the .attribute
directives are not set.
</p>
<a name="index-_002dmcsr_002dcheck-option_002c-RISC_002dV"></a>
</dd>
<dt><code>-mcsr-check</code></dt>
<dd><p>Enable the CSR checking for the ISA-dependent CRS and the read-only CSR.
The ISA-dependent CSR are only valid when the specific ISA is set.  The
read-only CSR can not be written by the CSR instructions.
</p>
<a name="index-_002dmno_002dcsr_002dcheck-option_002c-RISC_002dV"></a>
</dd>
<dt><code>-mno-csr-check</code></dt>
<dd><p>Don&rsquo;t do CSR cheching.
</p></dd>
</dl>

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Next: <a href="RISC_002dV_002dDirectives.html#RISC_002dV_002dDirectives" accesskey="n" rel="next">RISC-V-Directives</a>, Up: <a href="RISC_002dV_002dDependent.html#RISC_002dV_002dDependent" accesskey="u" rel="up">RISC-V-Dependent</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="AS-Index.html#AS-Index" title="Index" rel="index">Index</a>]</p>
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