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diff --git a/share/doc/gcc/Darwin-Options.html b/share/doc/gcc/Darwin-Options.html new file mode 100644 index 0000000..abe7f39 --- /dev/null +++ b/share/doc/gcc/Darwin-Options.html @@ -0,0 +1,395 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> +<!-- This file documents the use of the GNU compilers. + +Copyright (C) 1988-2023 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 5.1, http://www.gnu.org/software/texinfo/ --> +<head> +<title>Using the GNU Compiler Collection (GCC): Darwin Options</title> + +<meta name="description" content="Using the GNU Compiler Collection (GCC): Darwin Options"> +<meta name="keywords" content="Using the GNU Compiler Collection (GCC): Darwin 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="Indices.html#Indices" rel="index" title="Indices"> +<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="DEC-Alpha-Options.html#DEC-Alpha-Options" rel="next" title="DEC Alpha Options"> +<link href="C_002dSKY-Options.html#C_002dSKY-Options" rel="previous" title="C-SKY 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_US" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000"> +<a name="Darwin-Options"></a> +<div class="header"> +<p> +Next: <a href="DEC-Alpha-Options.html#DEC-Alpha-Options" accesskey="n" rel="next">DEC Alpha Options</a>, Previous: <a href="C_002dSKY-Options.html#C_002dSKY-Options" accesskey="p" rel="previous">C-SKY 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="Indices.html#Indices" title="Index" rel="index">Index</a>]</p> +</div> +<hr> +<a name="Darwin-Options-1"></a> +<h4 class="subsection">3.19.11 Darwin Options</h4> +<a name="index-Darwin-options"></a> + +<p>These options are defined for all architectures running the Darwin operating +system. +</p> +<p>FSF GCC on Darwin does not create “fat” object files; it creates +an object file for the single architecture that GCC was built to +target. Apple’s GCC on Darwin does create “fat” files if multiple +<samp>-arch</samp> options are used; it does so by running the compiler or +linker multiple times and joining the results together with +<samp>lipo</samp>. +</p> +<p>The subtype of the file created (like ‘<samp>ppc7400</samp>’ or ‘<samp>ppc970</samp>’ or +‘<samp>i686</samp>’) is determined by the flags that specify the ISA +that GCC is targeting, like <samp>-mcpu</samp> or <samp>-march</samp>. The +<samp>-force_cpusubtype_ALL</samp> option can be used to override this. +</p> +<p>The Darwin tools vary in their behavior when presented with an ISA +mismatch. The assembler, <samp>as</samp>, only permits instructions to +be used that are valid for the subtype of the file it is generating, +so you cannot put 64-bit instructions in a ‘<samp>ppc750</samp>’ object file. +The linker for shared libraries, <samp>/usr/bin/libtool</samp>, fails +and prints an error if asked to create a shared library with a less +restrictive subtype than its input files (for instance, trying to put +a ‘<samp>ppc970</samp>’ object file in a ‘<samp>ppc7400</samp>’ library). The linker +for executables, <code>ld</code>, quietly gives the executable the most +restrictive subtype of any of its input files. +</p> +<dl compact="compact"> +<dd><a name="index-F"></a> +</dd> +<dt><code>-F<var>dir</var></code></dt> +<dd><p>Add the framework directory <var>dir</var> to the head of the list of +directories to be searched for header files. These directories are +interleaved with those specified by <samp>-I</samp> options and are +scanned in a left-to-right order. +</p> +<p>A framework directory is a directory with frameworks in it. A +framework is a directory with a <samp>Headers</samp> and/or +<samp>PrivateHeaders</samp> directory contained directly in it that ends +in <samp>.framework</samp>. The name of a framework is the name of this +directory excluding the <samp>.framework</samp>. Headers associated with +the framework are found in one of those two directories, with +<samp>Headers</samp> being searched first. A subframework is a framework +directory that is in a framework’s <samp>Frameworks</samp> directory. +Includes of subframework headers can only appear in a header of a +framework that contains the subframework, or in a sibling subframework +header. Two subframeworks are siblings if they occur in the same +framework. A subframework should not have the same name as a +framework; a warning is issued if this is violated. Currently a +subframework cannot have subframeworks; in the future, the mechanism +may be extended to support this. The standard frameworks can be found +in <samp>/System/Library/Frameworks</samp> and +<samp>/Library/Frameworks</samp>. An example include looks like +<code>#include <Framework/header.h></code>, where <samp>Framework</samp> denotes +the name of the framework and <samp>header.h</samp> is found in the +<samp>PrivateHeaders</samp> or <samp>Headers</samp> directory. +</p> +<a name="index-iframework"></a> +</dd> +<dt><code>-iframework<var>dir</var></code></dt> +<dd><p>Like <samp>-F</samp> except the directory is a treated as a system +directory. The main difference between this <samp>-iframework</samp> and +<samp>-F</samp> is that with <samp>-iframework</samp> the compiler does not +warn about constructs contained within header files found via +<var>dir</var>. This option is valid only for the C family of languages. +</p> +<a name="index-gused"></a> +</dd> +<dt><code>-gused</code></dt> +<dd><p>Emit debugging information for symbols that are used. For stabs +debugging format, this enables <samp>-feliminate-unused-debug-symbols</samp>. +This is by default ON. +</p> +<a name="index-gfull"></a> +</dd> +<dt><code>-gfull</code></dt> +<dd><p>Emit debugging information for all symbols and types. +</p> +<a name="index-fconstant_002dcfstrings"></a> +</dd> +<dt><code>-fconstant-cfstrings</code></dt> +<dd><p>The <samp>-fconstant-cfstrings</samp> is an alias for <samp>-mconstant-cfstrings</samp>. +</p> +<a name="index-mconstant_002dcfstrings"></a> +</dd> +<dt><code>-mconstant-cfstrings</code></dt> +<dd><p>When the NeXT runtime is being used (the default on these systems), override +any <samp>-fconstant-string-class</samp> setting and cause <code>@"…"</code> +literals to be laid out as constant CoreFoundation strings. +</p> +<a name="index-mmacosx_002dversion_002dmin"></a> +</dd> +<dt><code>-mmacosx-version-min=<var>version</var></code></dt> +<dd><p>The earliest version of MacOS X that this executable will run on is +<var>version</var>. Typical values supported for <var>version</var> include <code>12</code>, +<code>10.12</code>, and <code>10.5.8</code>. +</p> +<p>If the compiler was built to use the system’s headers by default, +then the default for this option is the system version on which the +compiler is running, otherwise the default is to make choices that +are compatible with as many systems and code bases as possible. +</p> +<a name="index-mkernel"></a> +</dd> +<dt><code>-mkernel</code></dt> +<dd><p>Enable kernel development mode. The <samp>-mkernel</samp> option sets +<samp>-static</samp>, <samp>-fno-common</samp>, <samp>-fno-use-cxa-atexit</samp>, +<samp>-fno-exceptions</samp>, <samp>-fno-non-call-exceptions</samp>, +<samp>-fapple-kext</samp>, <samp>-fno-weak</samp> and <samp>-fno-rtti</samp> where +applicable. This mode also sets <samp>-mno-altivec</samp>, +<samp>-msoft-float</samp>, <samp>-fno-builtin</samp> and +<samp>-mlong-branch</samp> for PowerPC targets. +</p> +<a name="index-mone_002dbyte_002dbool"></a> +</dd> +<dt><code>-mone-byte-bool</code></dt> +<dd><p>Override the defaults for <code>bool</code> so that <code>sizeof(bool)==1</code>. +By default <code>sizeof(bool)</code> is <code>4</code> when compiling for +Darwin/PowerPC and <code>1</code> when compiling for Darwin/x86, so this +option has no effect on x86. +</p> +<p><strong>Warning:</strong> The <samp>-mone-byte-bool</samp> switch causes GCC +to generate code that is not binary compatible with code generated +without that switch. Using this switch may require recompiling all +other modules in a program, including system libraries. Use this +switch to conform to a non-default data model. +</p> +<a name="index-mfix_002dand_002dcontinue"></a> +<a name="index-ffix_002dand_002dcontinue"></a> +<a name="index-findirect_002ddata"></a> +</dd> +<dt><code>-mfix-and-continue</code></dt> +<dt><code>-ffix-and-continue</code></dt> +<dt><code>-findirect-data</code></dt> +<dd><p>Generate code suitable for fast turnaround development, such as to +allow GDB to dynamically load <samp>.o</samp> files into already-running +programs. <samp>-findirect-data</samp> and <samp>-ffix-and-continue</samp> +are provided for backwards compatibility. +</p> +<a name="index-all_005fload"></a> +</dd> +<dt><code>-all_load</code></dt> +<dd><p>Loads all members of static archive libraries. +See man ld(1) for more information. +</p> +<a name="index-arch_005ferrors_005ffatal"></a> +</dd> +<dt><code>-arch_errors_fatal</code></dt> +<dd><p>Cause the errors having to do with files that have the wrong architecture +to be fatal. +</p> +<a name="index-bind_005fat_005fload"></a> +</dd> +<dt><code>-bind_at_load</code></dt> +<dd><p>Causes the output file to be marked such that the dynamic linker will +bind all undefined references when the file is loaded or launched. +</p> +<a name="index-bundle"></a> +</dd> +<dt><code>-bundle</code></dt> +<dd><p>Produce a Mach-o bundle format file. +See man ld(1) for more information. +</p> +<a name="index-bundle_005floader"></a> +</dd> +<dt><code>-bundle_loader <var>executable</var></code></dt> +<dd><p>This option specifies the <var>executable</var> that will load the build +output file being linked. See man ld(1) for more information. +</p> +<a name="index-dynamiclib"></a> +</dd> +<dt><code>-dynamiclib</code></dt> +<dd><p>When passed this option, GCC produces a dynamic library instead of +an executable when linking, using the Darwin <samp>libtool</samp> command. +</p> +<a name="index-force_005fcpusubtype_005fALL"></a> +</dd> +<dt><code>-force_cpusubtype_ALL</code></dt> +<dd><p>This causes GCC’s output file to have the ‘<samp>ALL</samp>’ subtype, instead of +one controlled by the <samp>-mcpu</samp> or <samp>-march</samp> option. +</p> +</dd> +<dt><code>-allowable_client <var>client_name</var></code></dt> +<dt><code>-client_name</code></dt> +<dt><code>-compatibility_version</code></dt> +<dt><code>-current_version</code></dt> +<dt><code>-dead_strip</code></dt> +<dt><code>-dependency-file</code></dt> +<dt><code>-dylib_file</code></dt> +<dt><code>-dylinker_install_name</code></dt> +<dt><code>-dynamic</code></dt> +<dt><code>-exported_symbols_list</code></dt> +<dt><code>-filelist</code></dt> +<dt><code>-flat_namespace</code></dt> +<dt><code>-force_flat_namespace</code></dt> +<dt><code>-headerpad_max_install_names</code></dt> +<dt><code>-image_base</code></dt> +<dt><code>-init</code></dt> +<dt><code>-install_name</code></dt> +<dt><code>-keep_private_externs</code></dt> +<dt><code>-multi_module</code></dt> +<dt><code>-multiply_defined</code></dt> +<dt><code>-multiply_defined_unused</code></dt> +<dt><code>-noall_load</code></dt> +<dt><code>-no_dead_strip_inits_and_terms</code></dt> +<dt><code>-nofixprebinding</code></dt> +<dt><code>-nomultidefs</code></dt> +<dt><code>-noprebind</code></dt> +<dt><code>-noseglinkedit</code></dt> +<dt><code>-pagezero_size</code></dt> +<dt><code>-prebind</code></dt> +<dt><code>-prebind_all_twolevel_modules</code></dt> +<dt><code>-private_bundle</code></dt> +<dt><code>-read_only_relocs</code></dt> +<dt><code>-sectalign</code></dt> +<dt><code>-sectobjectsymbols</code></dt> +<dt><code>-whyload</code></dt> +<dt><code>-seg1addr</code></dt> +<dt><code>-sectcreate</code></dt> +<dt><code>-sectobjectsymbols</code></dt> +<dt><code>-sectorder</code></dt> +<dt><code>-segaddr</code></dt> +<dt><code>-segs_read_only_addr</code></dt> +<dt><code>-segs_read_write_addr</code></dt> +<dt><code>-seg_addr_table</code></dt> +<dt><code>-seg_addr_table_filename</code></dt> +<dt><code>-seglinkedit</code></dt> +<dt><code>-segprot</code></dt> +<dt><code>-segs_read_only_addr</code></dt> +<dt><code>-segs_read_write_addr</code></dt> +<dt><code>-single_module</code></dt> +<dt><code>-static</code></dt> +<dt><code>-sub_library</code></dt> +<dd><a name="index-allowable_005fclient"></a> +<a name="index-client_005fname"></a> +<a name="index-compatibility_005fversion"></a> +<a name="index-current_005fversion"></a> +<a name="index-dead_005fstrip"></a> +<a name="index-dependency_002dfile"></a> +<a name="index-dylib_005ffile"></a> +<a name="index-dylinker_005finstall_005fname"></a> +<a name="index-dynamic"></a> +<a name="index-exported_005fsymbols_005flist"></a> +<a name="index-filelist"></a> +<a name="index-flat_005fnamespace"></a> +<a name="index-force_005fflat_005fnamespace"></a> +<a name="index-headerpad_005fmax_005finstall_005fnames"></a> +<a name="index-image_005fbase"></a> +<a name="index-init"></a> +<a name="index-install_005fname"></a> +<a name="index-keep_005fprivate_005fexterns"></a> +<a name="index-multi_005fmodule"></a> +<a name="index-multiply_005fdefined"></a> +<a name="index-multiply_005fdefined_005funused"></a> +<a name="index-noall_005fload"></a> +<a name="index-no_005fdead_005fstrip_005finits_005fand_005fterms"></a> +<a name="index-nofixprebinding"></a> +<a name="index-nomultidefs"></a> +<a name="index-noprebind"></a> +<a name="index-noseglinkedit"></a> +<a name="index-pagezero_005fsize"></a> +<a name="index-prebind"></a> +<a name="index-prebind_005fall_005ftwolevel_005fmodules"></a> +<a name="index-private_005fbundle"></a> +<a name="index-read_005fonly_005frelocs"></a> +<a name="index-sectalign"></a> +<a name="index-sectobjectsymbols"></a> +<a name="index-whyload"></a> +<a name="index-seg1addr"></a> +<a name="index-sectcreate"></a> +<a name="index-sectobjectsymbols-1"></a> +<a name="index-sectorder"></a> +<a name="index-segaddr"></a> +<a name="index-segs_005fread_005fonly_005faddr"></a> +<a name="index-segs_005fread_005fwrite_005faddr"></a> +<a name="index-seg_005faddr_005ftable"></a> +<a name="index-seg_005faddr_005ftable_005ffilename"></a> +<a name="index-seglinkedit"></a> +<a name="index-segprot"></a> +<a name="index-segs_005fread_005fonly_005faddr-1"></a> +<a name="index-segs_005fread_005fwrite_005faddr-1"></a> +<a name="index-single_005fmodule"></a> +<a name="index-static-1"></a> +<a name="index-sub_005flibrary"></a> +<a name="index-sub_005fumbrella"></a> +<a name="index-twolevel_005fnamespace"></a> +<a name="index-umbrella"></a> +<a name="index-undefined"></a> +<a name="index-unexported_005fsymbols_005flist"></a> +<a name="index-weak_005freference_005fmismatches"></a> +<a name="index-whatsloaded"></a> +</dd> +<dt><code>-sub_umbrella</code></dt> +<dt><code>-twolevel_namespace</code></dt> +<dt><code>-umbrella</code></dt> +<dt><code>-undefined</code></dt> +<dt><code>-unexported_symbols_list</code></dt> +<dt><code>-weak_reference_mismatches</code></dt> +<dt><code>-whatsloaded</code></dt> +<dd><p>These options are passed to the Darwin linker. The Darwin linker man page +describes them in detail. +</p></dd> +</dl> + +<hr> +<div class="header"> +<p> +Next: <a href="DEC-Alpha-Options.html#DEC-Alpha-Options" accesskey="n" rel="next">DEC Alpha Options</a>, Previous: <a href="C_002dSKY-Options.html#C_002dSKY-Options" accesskey="p" rel="previous">C-SKY 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="Indices.html#Indices" title="Index" rel="index">Index</a>]</p> +</div> + + + +</body> +</html> |