332 lines
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HTML
332 lines
15 KiB
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<!-- Copyright (C) 1988-2016 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3 or
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any later version published by the Free Software Foundation; with the
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Invariant Sections being "Funding Free Software", the Front-Cover
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(see below). A copy of the license is included in the section entitled
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"GNU Free Documentation License".
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(a) The FSF's Front-Cover Text is:
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A GNU Manual
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<!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>Using the GNU Compiler Collection (GCC): HPPA Options</title>
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<meta name="description" content="Using the GNU Compiler Collection (GCC): HPPA Options">
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<meta name="keywords" content="Using the GNU Compiler Collection (GCC): HPPA Options">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="Option-Index.html#Option-Index" rel="index" title="Option Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Submodel-Options.html#Submodel-Options" rel="up" title="Submodel Options">
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<link href="IA_002d64-Options.html#IA_002d64-Options" rel="next" title="IA-64 Options">
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<link href="H8_002f300-Options.html#H8_002f300-Options" rel="prev" title="H8/300 Options">
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<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
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<a name="HPPA-Options"></a>
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<div class="header">
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<p>
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Next: <a href="IA_002d64-Options.html#IA_002d64-Options" accesskey="n" rel="next">IA-64 Options</a>, Previous: <a href="H8_002f300-Options.html#H8_002f300-Options" accesskey="p" rel="prev">H8/300 Options</a>, Up: <a href="Submodel-Options.html#Submodel-Options" accesskey="u" rel="up">Submodel Options</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<a name="HPPA-Options-1"></a>
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<h4 class="subsection">3.18.17 HPPA Options</h4>
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<a name="index-HPPA-Options"></a>
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<p>These ‘<samp>-m</samp>’ options are defined for the HPPA family of computers:
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</p>
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<dl compact="compact">
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<dt><code>-march=<var>architecture-type</var></code></dt>
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<dd><a name="index-march-4"></a>
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<p>Generate code for the specified architecture. The choices for
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<var>architecture-type</var> are ‘<samp>1.0</samp>’ for PA 1.0, ‘<samp>1.1</samp>’ for PA
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1.1, and ‘<samp>2.0</samp>’ for PA 2.0 processors. Refer to
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<samp>/usr/lib/sched.models</samp> on an HP-UX system to determine the proper
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architecture option for your machine. Code compiled for lower numbered
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architectures runs on higher numbered architectures, but not the
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other way around.
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</p>
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</dd>
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<dt><code>-mpa-risc-1-0</code></dt>
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<dt><code>-mpa-risc-1-1</code></dt>
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<dt><code>-mpa-risc-2-0</code></dt>
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<dd><a name="index-mpa_002drisc_002d1_002d0"></a>
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<a name="index-mpa_002drisc_002d1_002d1"></a>
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<a name="index-mpa_002drisc_002d2_002d0"></a>
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<p>Synonyms for <samp>-march=1.0</samp>, <samp>-march=1.1</samp>, and <samp>-march=2.0</samp> respectively.
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</p>
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</dd>
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<dt><code>-mjump-in-delay</code></dt>
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<dd><a name="index-mjump_002din_002ddelay"></a>
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<p>This option is ignored and provided for compatibility purposes only.
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</p>
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</dd>
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<dt><code>-mdisable-fpregs</code></dt>
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<dd><a name="index-mdisable_002dfpregs"></a>
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<p>Prevent floating-point registers from being used in any manner. This is
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necessary for compiling kernels that perform lazy context switching of
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floating-point registers. If you use this option and attempt to perform
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floating-point operations, the compiler aborts.
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</p>
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</dd>
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<dt><code>-mdisable-indexing</code></dt>
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<dd><a name="index-mdisable_002dindexing"></a>
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<p>Prevent the compiler from using indexing address modes. This avoids some
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rather obscure problems when compiling MIG generated code under MACH.
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</p>
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</dd>
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<dt><code>-mno-space-regs</code></dt>
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<dd><a name="index-mno_002dspace_002dregs"></a>
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<p>Generate code that assumes the target has no space registers. This allows
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GCC to generate faster indirect calls and use unscaled index address modes.
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</p>
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<p>Such code is suitable for level 0 PA systems and kernels.
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</p>
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</dd>
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<dt><code>-mfast-indirect-calls</code></dt>
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<dd><a name="index-mfast_002dindirect_002dcalls"></a>
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<p>Generate code that assumes calls never cross space boundaries. This
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allows GCC to emit code that performs faster indirect calls.
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</p>
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<p>This option does not work in the presence of shared libraries or nested
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functions.
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</p>
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</dd>
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<dt><code>-mfixed-range=<var>register-range</var></code></dt>
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<dd><a name="index-mfixed_002drange"></a>
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<p>Generate code treating the given register range as fixed registers.
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A fixed register is one that the register allocator cannot use. This is
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useful when compiling kernel code. A register range is specified as
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two registers separated by a dash. Multiple register ranges can be
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specified separated by a comma.
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</p>
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</dd>
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<dt><code>-mlong-load-store</code></dt>
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<dd><a name="index-mlong_002dload_002dstore"></a>
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<p>Generate 3-instruction load and store sequences as sometimes required by
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the HP-UX 10 linker. This is equivalent to the ‘<samp>+k</samp>’ option to
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the HP compilers.
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</p>
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</dd>
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<dt><code>-mportable-runtime</code></dt>
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<dd><a name="index-mportable_002druntime"></a>
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<p>Use the portable calling conventions proposed by HP for ELF systems.
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</p>
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</dd>
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<dt><code>-mgas</code></dt>
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<dd><a name="index-mgas"></a>
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<p>Enable the use of assembler directives only GAS understands.
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</p>
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</dd>
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<dt><code>-mschedule=<var>cpu-type</var></code></dt>
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<dd><a name="index-mschedule"></a>
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<p>Schedule code according to the constraints for the machine type
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<var>cpu-type</var>. The choices for <var>cpu-type</var> are ‘<samp>700</samp>’
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‘<samp>7100</samp>’, ‘<samp>7100LC</samp>’, ‘<samp>7200</samp>’, ‘<samp>7300</samp>’ and ‘<samp>8000</samp>’. Refer
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to <samp>/usr/lib/sched.models</samp> on an HP-UX system to determine the
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proper scheduling option for your machine. The default scheduling is
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‘<samp>8000</samp>’.
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</p>
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</dd>
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<dt><code>-mlinker-opt</code></dt>
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<dd><a name="index-mlinker_002dopt"></a>
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<p>Enable the optimization pass in the HP-UX linker. Note this makes symbolic
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debugging impossible. It also triggers a bug in the HP-UX 8 and HP-UX 9
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linkers in which they give bogus error messages when linking some programs.
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</p>
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</dd>
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<dt><code>-msoft-float</code></dt>
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<dd><a name="index-msoft_002dfloat-3"></a>
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<p>Generate output containing library calls for floating point.
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<strong>Warning:</strong> the requisite libraries are not available for all HPPA
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targets. Normally the facilities of the machine’s usual C compiler are
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used, but this cannot be done directly in cross-compilation. You must make
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your own arrangements to provide suitable library functions for
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cross-compilation.
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</p>
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<p><samp>-msoft-float</samp> changes the calling convention in the output file;
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therefore, it is only useful if you compile <em>all</em> of a program with
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this option. In particular, you need to compile <samp>libgcc.a</samp>, the
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library that comes with GCC, with <samp>-msoft-float</samp> in order for
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this to work.
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</p>
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</dd>
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<dt><code>-msio</code></dt>
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<dd><a name="index-msio"></a>
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<p>Generate the predefine, <code>_SIO</code>, for server IO. The default is
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<samp>-mwsio</samp>. This generates the predefines, <code>__hp9000s700</code>,
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<code>__hp9000s700__</code> and <code>_WSIO</code>, for workstation IO. These
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options are available under HP-UX and HI-UX.
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</p>
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</dd>
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<dt><code>-mgnu-ld</code></dt>
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<dd><a name="index-mgnu_002dld"></a>
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<p>Use options specific to GNU <code>ld</code>.
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This passes <samp>-shared</samp> to <code>ld</code> when
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building a shared library. It is the default when GCC is configured,
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explicitly or implicitly, with the GNU linker. This option does not
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affect which <code>ld</code> is called; it only changes what parameters
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are passed to that <code>ld</code>.
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The <code>ld</code> that is called is determined by the
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<samp>--with-ld</samp> configure option, GCC’s program search path, and
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finally by the user’s <code>PATH</code>. The linker used by GCC can be printed
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using ‘<samp>which `gcc -print-prog-name=ld`</samp>’. This option is only available
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on the 64-bit HP-UX GCC, i.e. configured with ‘<samp>hppa*64*-*-hpux*</samp>’.
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</p>
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</dd>
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<dt><code>-mhp-ld</code></dt>
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<dd><a name="index-mhp_002dld"></a>
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<p>Use options specific to HP <code>ld</code>.
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This passes <samp>-b</samp> to <code>ld</code> when building
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a shared library and passes <samp>+Accept TypeMismatch</samp> to <code>ld</code> on all
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links. It is the default when GCC is configured, explicitly or
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implicitly, with the HP linker. This option does not affect
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which <code>ld</code> is called; it only changes what parameters are passed to that
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<code>ld</code>.
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The <code>ld</code> that is called is determined by the <samp>--with-ld</samp>
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configure option, GCC’s program search path, and finally by the user’s
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<code>PATH</code>. The linker used by GCC can be printed using ‘<samp>which
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`gcc -print-prog-name=ld`</samp>’. This option is only available on the 64-bit
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HP-UX GCC, i.e. configured with ‘<samp>hppa*64*-*-hpux*</samp>’.
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</p>
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</dd>
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<dt><code>-mlong-calls</code></dt>
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<dd><a name="index-mno_002dlong_002dcalls-2"></a>
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<p>Generate code that uses long call sequences. This ensures that a call
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is always able to reach linker generated stubs. The default is to generate
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long calls only when the distance from the call site to the beginning
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of the function or translation unit, as the case may be, exceeds a
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predefined limit set by the branch type being used. The limits for
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normal calls are 7,600,000 and 240,000 bytes, respectively for the
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PA 2.0 and PA 1.X architectures. Sibcalls are always limited at
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240,000 bytes.
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</p>
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<p>Distances are measured from the beginning of functions when using the
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<samp>-ffunction-sections</samp> option, or when using the <samp>-mgas</samp>
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and <samp>-mno-portable-runtime</samp> options together under HP-UX with
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the SOM linker.
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</p>
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<p>It is normally not desirable to use this option as it degrades
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performance. However, it may be useful in large applications,
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particularly when partial linking is used to build the application.
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</p>
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<p>The types of long calls used depends on the capabilities of the
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assembler and linker, and the type of code being generated. The
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impact on systems that support long absolute calls, and long pic
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symbol-difference or pc-relative calls should be relatively small.
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However, an indirect call is used on 32-bit ELF systems in pic code
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and it is quite long.
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</p>
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</dd>
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<dt><code>-munix=<var>unix-std</var></code></dt>
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<dd><a name="index-march-5"></a>
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<p>Generate compiler predefines and select a startfile for the specified
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UNIX standard. The choices for <var>unix-std</var> are ‘<samp>93</samp>’, ‘<samp>95</samp>’
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and ‘<samp>98</samp>’. ‘<samp>93</samp>’ is supported on all HP-UX versions. ‘<samp>95</samp>’
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is available on HP-UX 10.10 and later. ‘<samp>98</samp>’ is available on HP-UX
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11.11 and later. The default values are ‘<samp>93</samp>’ for HP-UX 10.00,
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‘<samp>95</samp>’ for HP-UX 10.10 though to 11.00, and ‘<samp>98</samp>’ for HP-UX 11.11
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and later.
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</p>
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<p><samp>-munix=93</samp> provides the same predefines as GCC 3.3 and 3.4.
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<samp>-munix=95</samp> provides additional predefines for <code>XOPEN_UNIX</code>
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and <code>_XOPEN_SOURCE_EXTENDED</code>, and the startfile <samp>unix95.o</samp>.
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<samp>-munix=98</samp> provides additional predefines for <code>_XOPEN_UNIX</code>,
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<code>_XOPEN_SOURCE_EXTENDED</code>, <code>_INCLUDE__STDC_A1_SOURCE</code> and
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<code>_INCLUDE_XOPEN_SOURCE_500</code>, and the startfile <samp>unix98.o</samp>.
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</p>
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<p>It is <em>important</em> to note that this option changes the interfaces
|
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|
|
for various library routines. It also affects the operational behavior
|
||
|
|
of the C library. Thus, <em>extreme</em> care is needed in using this
|
||
|
|
option.
|
||
|
|
</p>
|
||
|
|
<p>Library code that is intended to operate with more than one UNIX
|
||
|
|
standard must test, set and restore the variable <code>__xpg4_extended_mask</code>
|
||
|
|
as appropriate. Most GNU software doesn’t provide this capability.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt><code>-nolibdld</code></dt>
|
||
|
|
<dd><a name="index-nolibdld"></a>
|
||
|
|
<p>Suppress the generation of link options to search libdld.sl when the
|
||
|
|
<samp>-static</samp> option is specified on HP-UX 10 and later.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt><code>-static</code></dt>
|
||
|
|
<dd><a name="index-static-2"></a>
|
||
|
|
<p>The HP-UX implementation of setlocale in libc has a dependency on
|
||
|
|
libdld.sl. There isn’t an archive version of libdld.sl. Thus,
|
||
|
|
when the <samp>-static</samp> option is specified, special link options
|
||
|
|
are needed to resolve this dependency.
|
||
|
|
</p>
|
||
|
|
<p>On HP-UX 10 and later, the GCC driver adds the necessary options to
|
||
|
|
link with libdld.sl when the <samp>-static</samp> option is specified.
|
||
|
|
This causes the resulting binary to be dynamic. On the 64-bit port,
|
||
|
|
the linkers generate dynamic binaries by default in any case. The
|
||
|
|
<samp>-nolibdld</samp> option can be used to prevent the GCC driver from
|
||
|
|
adding these link options.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt><code>-threads</code></dt>
|
||
|
|
<dd><a name="index-threads"></a>
|
||
|
|
<p>Add support for multithreading with the <em>dce thread</em> library
|
||
|
|
under HP-UX. This option sets flags for both the preprocessor and
|
||
|
|
linker.
|
||
|
|
</p></dd>
|
||
|
|
</dl>
|
||
|
|
|
||
|
|
<hr>
|
||
|
|
<div class="header">
|
||
|
|
<p>
|
||
|
|
Next: <a href="IA_002d64-Options.html#IA_002d64-Options" accesskey="n" rel="next">IA-64 Options</a>, Previous: <a href="H8_002f300-Options.html#H8_002f300-Options" accesskey="p" rel="prev">H8/300 Options</a>, Up: <a href="Submodel-Options.html#Submodel-Options" accesskey="u" rel="up">Submodel Options</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
|
||
|
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</div>
|
||
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</body>
|
||
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</html>
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