| <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> |
| <html> |
| <!-- Copyright (C) 1988-2015 Free Software Foundation, Inc. |
| |
| Permission is granted to copy, distribute and/or modify this document |
| under the terms of the GNU Free Documentation License, Version 1.3 or |
| any later version published by the Free Software Foundation; with the |
| Invariant Sections being "Funding Free Software", the Front-Cover |
| Texts being (a) (see below), and with the Back-Cover Texts being (b) |
| (see below). A copy of the license is included in the section entitled |
| "GNU Free Documentation License". |
| |
| (a) The FSF's Front-Cover Text is: |
| |
| A GNU Manual |
| |
| (b) The FSF's Back-Cover Text is: |
| |
| You have freedom to copy and modify this GNU Manual, like GNU |
| software. Copies published by the Free Software Foundation raise |
| funds for GNU development. --> |
| <!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ --> |
| <head> |
| <title>Using the GNU Compiler Collection (GCC): HPPA Options</title> |
| |
| <meta name="description" content="Using the GNU Compiler Collection (GCC): HPPA Options"> |
| <meta name="keywords" content="Using the GNU Compiler Collection (GCC): HPPA Options"> |
| <meta name="resource-type" content="document"> |
| <meta name="distribution" content="global"> |
| <meta name="Generator" content="makeinfo"> |
| <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> |
| <link href="index.html#Top" rel="start" title="Top"> |
| <link href="Option-Index.html#Option-Index" rel="index" title="Option Index"> |
| <link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> |
| <link href="Submodel-Options.html#Submodel-Options" rel="up" title="Submodel Options"> |
| <link href="i386-and-x86_002d64-Options.html#i386-and-x86_002d64-Options" rel="next" title="i386 and x86-64 Options"> |
| <link href="H8_002f300-Options.html#H8_002f300-Options" rel="prev" title="H8/300 Options"> |
| <style type="text/css"> |
| <!-- |
| a.summary-letter {text-decoration: none} |
| blockquote.smallquotation {font-size: smaller} |
| div.display {margin-left: 3.2em} |
| div.example {margin-left: 3.2em} |
| div.indentedblock {margin-left: 3.2em} |
| div.lisp {margin-left: 3.2em} |
| div.smalldisplay {margin-left: 3.2em} |
| div.smallexample {margin-left: 3.2em} |
| div.smallindentedblock {margin-left: 3.2em; font-size: smaller} |
| div.smalllisp {margin-left: 3.2em} |
| kbd {font-style:oblique} |
| pre.display {font-family: inherit} |
| pre.format {font-family: inherit} |
| pre.menu-comment {font-family: serif} |
| pre.menu-preformatted {font-family: serif} |
| pre.smalldisplay {font-family: inherit; font-size: smaller} |
| pre.smallexample {font-size: smaller} |
| pre.smallformat {font-family: inherit; font-size: smaller} |
| pre.smalllisp {font-size: smaller} |
| span.nocodebreak {white-space:nowrap} |
| span.nolinebreak {white-space:nowrap} |
| span.roman {font-family:serif; font-weight:normal} |
| span.sansserif {font-family:sans-serif; font-weight:normal} |
| ul.no-bullet {list-style: none} |
| --> |
| </style> |
| |
| |
| </head> |
| |
| <body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000"> |
| <a name="HPPA-Options"></a> |
| <div class="header"> |
| <p> |
| Next: <a href="i386-and-x86_002d64-Options.html#i386-and-x86_002d64-Options" accesskey="n" rel="next">i386 and x86-64 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> |
| </div> |
| <hr> |
| <a name="HPPA-Options-1"></a> |
| <h4 class="subsection">3.17.16 HPPA Options</h4> |
| <a name="index-HPPA-Options"></a> |
| |
| <p>These ‘<samp>-m</samp>’ options are defined for the HPPA family of computers: |
| </p> |
| <dl compact="compact"> |
| <dt><code>-march=<var>architecture-type</var></code></dt> |
| <dd><a name="index-march-4"></a> |
| <p>Generate code for the specified architecture. The choices for |
| <var>architecture-type</var> are ‘<samp>1.0</samp>’ for PA 1.0, ‘<samp>1.1</samp>’ for PA |
| 1.1, and ‘<samp>2.0</samp>’ for PA 2.0 processors. Refer to |
| <samp>/usr/lib/sched.models</samp> on an HP-UX system to determine the proper |
| architecture option for your machine. Code compiled for lower numbered |
| architectures runs on higher numbered architectures, but not the |
| other way around. |
| </p> |
| </dd> |
| <dt><code>-mpa-risc-1-0</code></dt> |
| <dt><code>-mpa-risc-1-1</code></dt> |
| <dt><code>-mpa-risc-2-0</code></dt> |
| <dd><a name="index-mpa_002drisc_002d1_002d0"></a> |
| <a name="index-mpa_002drisc_002d1_002d1"></a> |
| <a name="index-mpa_002drisc_002d2_002d0"></a> |
| <p>Synonyms for <samp>-march=1.0</samp>, <samp>-march=1.1</samp>, and <samp>-march=2.0</samp> respectively. |
| </p> |
| </dd> |
| <dt><code>-mjump-in-delay</code></dt> |
| <dd><a name="index-mjump_002din_002ddelay"></a> |
| <p>Fill delay slots of function calls with unconditional jump instructions |
| by modifying the return pointer for the function call to be the target |
| of the conditional jump. |
| </p> |
| </dd> |
| <dt><code>-mdisable-fpregs</code></dt> |
| <dd><a name="index-mdisable_002dfpregs"></a> |
| <p>Prevent floating-point registers from being used in any manner. This is |
| necessary for compiling kernels that perform lazy context switching of |
| floating-point registers. If you use this option and attempt to perform |
| floating-point operations, the compiler aborts. |
| </p> |
| </dd> |
| <dt><code>-mdisable-indexing</code></dt> |
| <dd><a name="index-mdisable_002dindexing"></a> |
| <p>Prevent the compiler from using indexing address modes. This avoids some |
| rather obscure problems when compiling MIG generated code under MACH. |
| </p> |
| </dd> |
| <dt><code>-mno-space-regs</code></dt> |
| <dd><a name="index-mno_002dspace_002dregs"></a> |
| <p>Generate code that assumes the target has no space registers. This allows |
| GCC to generate faster indirect calls and use unscaled index address modes. |
| </p> |
| <p>Such code is suitable for level 0 PA systems and kernels. |
| </p> |
| </dd> |
| <dt><code>-mfast-indirect-calls</code></dt> |
| <dd><a name="index-mfast_002dindirect_002dcalls"></a> |
| <p>Generate code that assumes calls never cross space boundaries. This |
| allows GCC to emit code that performs faster indirect calls. |
| </p> |
| <p>This option does not work in the presence of shared libraries or nested |
| functions. |
| </p> |
| </dd> |
| <dt><code>-mfixed-range=<var>register-range</var></code></dt> |
| <dd><a name="index-mfixed_002drange"></a> |
| <p>Generate code treating the given register range as fixed registers. |
| A fixed register is one that the register allocator cannot use. This is |
| useful when compiling kernel code. A register range is specified as |
| two registers separated by a dash. Multiple register ranges can be |
| specified separated by a comma. |
| </p> |
| </dd> |
| <dt><code>-mlong-load-store</code></dt> |
| <dd><a name="index-mlong_002dload_002dstore"></a> |
| <p>Generate 3-instruction load and store sequences as sometimes required by |
| the HP-UX 10 linker. This is equivalent to the ‘<samp>+k</samp>’ option to |
| the HP compilers. |
| </p> |
| </dd> |
| <dt><code>-mportable-runtime</code></dt> |
| <dd><a name="index-mportable_002druntime"></a> |
| <p>Use the portable calling conventions proposed by HP for ELF systems. |
| </p> |
| </dd> |
| <dt><code>-mgas</code></dt> |
| <dd><a name="index-mgas"></a> |
| <p>Enable the use of assembler directives only GAS understands. |
| </p> |
| </dd> |
| <dt><code>-mschedule=<var>cpu-type</var></code></dt> |
| <dd><a name="index-mschedule"></a> |
| <p>Schedule code according to the constraints for the machine type |
| <var>cpu-type</var>. The choices for <var>cpu-type</var> are ‘<samp>700</samp>’ |
| ‘<samp>7100</samp>’, ‘<samp>7100LC</samp>’, ‘<samp>7200</samp>’, ‘<samp>7300</samp>’ and ‘<samp>8000</samp>’. Refer |
| to <samp>/usr/lib/sched.models</samp> on an HP-UX system to determine the |
| proper scheduling option for your machine. The default scheduling is |
| ‘<samp>8000</samp>’. |
| </p> |
| </dd> |
| <dt><code>-mlinker-opt</code></dt> |
| <dd><a name="index-mlinker_002dopt"></a> |
| <p>Enable the optimization pass in the HP-UX linker. Note this makes symbolic |
| debugging impossible. It also triggers a bug in the HP-UX 8 and HP-UX 9 |
| linkers in which they give bogus error messages when linking some programs. |
| </p> |
| </dd> |
| <dt><code>-msoft-float</code></dt> |
| <dd><a name="index-msoft_002dfloat-3"></a> |
| <p>Generate output containing library calls for floating point. |
| <strong>Warning:</strong> the requisite libraries are not available for all HPPA |
| targets. Normally the facilities of the machine’s usual C compiler are |
| used, but this cannot be done directly in cross-compilation. You must make |
| your own arrangements to provide suitable library functions for |
| cross-compilation. |
| </p> |
| <p><samp>-msoft-float</samp> changes the calling convention in the output file; |
| therefore, it is only useful if you compile <em>all</em> of a program with |
| this option. In particular, you need to compile <samp>libgcc.a</samp>, the |
| library that comes with GCC, with <samp>-msoft-float</samp> in order for |
| this to work. |
| </p> |
| </dd> |
| <dt><code>-msio</code></dt> |
| <dd><a name="index-msio"></a> |
| <p>Generate the predefine, <code>_SIO</code>, for server IO. The default is |
| <samp>-mwsio</samp>. This generates the predefines, <code>__hp9000s700</code>, |
| <code>__hp9000s700__</code> and <code>_WSIO</code>, for workstation IO. These |
| options are available under HP-UX and HI-UX. |
| </p> |
| </dd> |
| <dt><code>-mgnu-ld</code></dt> |
| <dd><a name="index-mgnu_002dld"></a> |
| <p>Use options specific to GNU <code>ld</code>. |
| This passes <samp>-shared</samp> to <code>ld</code> when |
| building a shared library. It is the default when GCC is configured, |
| explicitly or implicitly, with the GNU linker. This option does not |
| affect which <code>ld</code> is called; it only changes what parameters |
| are passed to that <code>ld</code>. |
| The <code>ld</code> that is called is determined by the |
| <samp>--with-ld</samp> configure option, GCC’s program search path, and |
| finally by the user’s <code>PATH</code>. The linker used by GCC can be printed |
| using ‘<samp>which `gcc -print-prog-name=ld`</samp>’. This option is only available |
| on the 64-bit HP-UX GCC, i.e. configured with ‘<samp>hppa*64*-*-hpux*</samp>’. |
| </p> |
| </dd> |
| <dt><code>-mhp-ld</code></dt> |
| <dd><a name="index-mhp_002dld"></a> |
| <p>Use options specific to HP <code>ld</code>. |
| This passes <samp>-b</samp> to <code>ld</code> when building |
| a shared library and passes <samp>+Accept TypeMismatch</samp> to <code>ld</code> on all |
| links. It is the default when GCC is configured, explicitly or |
| implicitly, with the HP linker. This option does not affect |
| which <code>ld</code> is called; it only changes what parameters are passed to that |
| <code>ld</code>. |
| The <code>ld</code> that is called is determined by the <samp>--with-ld</samp> |
| configure option, GCC’s program search path, and finally by the user’s |
| <code>PATH</code>. The linker used by GCC can be printed using ‘<samp>which |
| `gcc -print-prog-name=ld`</samp>’. This option is only available on the 64-bit |
| HP-UX GCC, i.e. configured with ‘<samp>hppa*64*-*-hpux*</samp>’. |
| </p> |
| </dd> |
| <dt><code>-mlong-calls</code></dt> |
| <dd><a name="index-mno_002dlong_002dcalls-2"></a> |
| <p>Generate code that uses long call sequences. This ensures that a call |
| is always able to reach linker generated stubs. The default is to generate |
| long calls only when the distance from the call site to the beginning |
| of the function or translation unit, as the case may be, exceeds a |
| predefined limit set by the branch type being used. The limits for |
| normal calls are 7,600,000 and 240,000 bytes, respectively for the |
| PA 2.0 and PA 1.X architectures. Sibcalls are always limited at |
| 240,000 bytes. |
| </p> |
| <p>Distances are measured from the beginning of functions when using the |
| <samp>-ffunction-sections</samp> option, or when using the <samp>-mgas</samp> |
| and <samp>-mno-portable-runtime</samp> options together under HP-UX with |
| the SOM linker. |
| </p> |
| <p>It is normally not desirable to use this option as it degrades |
| performance. However, it may be useful in large applications, |
| particularly when partial linking is used to build the application. |
| </p> |
| <p>The types of long calls used depends on the capabilities of the |
| assembler and linker, and the type of code being generated. The |
| impact on systems that support long absolute calls, and long pic |
| symbol-difference or pc-relative calls should be relatively small. |
| However, an indirect call is used on 32-bit ELF systems in pic code |
| and it is quite long. |
| </p> |
| </dd> |
| <dt><code>-munix=<var>unix-std</var></code></dt> |
| <dd><a name="index-march-5"></a> |
| <p>Generate compiler predefines and select a startfile for the specified |
| UNIX standard. The choices for <var>unix-std</var> are ‘<samp>93</samp>’, ‘<samp>95</samp>’ |
| and ‘<samp>98</samp>’. ‘<samp>93</samp>’ is supported on all HP-UX versions. ‘<samp>95</samp>’ |
| is available on HP-UX 10.10 and later. ‘<samp>98</samp>’ is available on HP-UX |
| 11.11 and later. The default values are ‘<samp>93</samp>’ for HP-UX 10.00, |
| ‘<samp>95</samp>’ for HP-UX 10.10 though to 11.00, and ‘<samp>98</samp>’ for HP-UX 11.11 |
| and later. |
| </p> |
| <p><samp>-munix=93</samp> provides the same predefines as GCC 3.3 and 3.4. |
| <samp>-munix=95</samp> provides additional predefines for <code>XOPEN_UNIX</code> |
| and <code>_XOPEN_SOURCE_EXTENDED</code>, and the startfile <samp>unix95.o</samp>. |
| <samp>-munix=98</samp> provides additional predefines for <code>_XOPEN_UNIX</code>, |
| <code>_XOPEN_SOURCE_EXTENDED</code>, <code>_INCLUDE__STDC_A1_SOURCE</code> and |
| <code>_INCLUDE_XOPEN_SOURCE_500</code>, and the startfile <samp>unix98.o</samp>. |
| </p> |
| <p>It is <em>important</em> to note that this option changes the interfaces |
| 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 <var>__xpg4_extended_mask</var> |
| 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="i386-and-x86_002d64-Options.html#i386-and-x86_002d64-Options" accesskey="n" rel="next">i386 and x86-64 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> |
| </div> |
| |
| |
| |
| </body> |
| </html> |
