source: chapter08/gcc.xml@ 2590473

multilib
Last change on this file since 2590473 was 2590473, checked in by Thomas Trepl (Moody) <thomas@…>, 10 months ago

Automatic merge of trunk into multilib

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1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3 "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
4 <!ENTITY % general-entities SYSTEM "../general.ent">
5 %general-entities;
6]>
7
8<sect1 id="ch-system-gcc" role="wrap">
9 <?dbhtml filename="gcc.html"?>
10
11 <sect1info condition="script">
12 <productname>gcc</productname>
13 <productnumber>&gcc-version;</productnumber>
14 <address>&gcc-url;</address>
15 </sect1info>
16
17 <title>GCC-&gcc-version;</title>
18
19 <indexterm zone="ch-system-gcc">
20 <primary sortas="a-GCC">GCC</primary>
21 </indexterm>
22
23 <sect2 role="package">
24 <title/>
25
26 <para>The GCC package contains the GNU compiler collection, which includes
27 the C and C++ compilers.</para>
28
29 <segmentedlist>
30 <segtitle>&buildtime;</segtitle>
31 <segtitle>&diskspace;</segtitle>
32
33 <seglistitem>
34 <seg>&gcc-fin-sbu;</seg>
35 <seg>&gcc-fin-du;</seg>
36 </seglistitem>
37 </segmentedlist>
38
39 </sect2>
40
41 <sect2 role="installation">
42 <title>Installation of GCC</title>
43
44 <para>At first, fix an issue breaking
45 <filename class="libraryfile">libasan.a</filename> building this package
46 with Glibc-2.34 or later:</para>
47
48<screen><userinput remap="pre">sed -e '/static.*SIGSTKSZ/d' \
49 -e 's/return kAltStackSize/return SIGSTKSZ * 4/' \
50 -i libsanitizer/sanitizer_common/sanitizer_posix_libcdep.cpp</userinput></screen>
51
52 <para>If building on x86_64, change the default directory name for 64-bit
53 libraries to <quote>lib</quote>:</para>
54
55<screen arch="default"><userinput remap="pre">case $(uname -m) in
56 x86_64)
57 sed -e '/m64=/s/lib64/lib/' \
58 -i.orig gcc/config/i386/t-linux64
59 ;;
60esac</userinput></screen>
61
62 <para arch="ml_32,ml_x32,ml_all">Change the default directory name for 64-bit
63 libraries to <quote>lib</quote>:</para>
64
65<screen arch="ml_32,ml_x32,ml_all"><userinput remap="pre">sed -e '/m64=/s/lib64/lib/' \
66 -e '/m32=/s/m32=.*/m32=..\/lib32$(call if_multiarch,:i386-linux-gnu)/' \
67 -i.orig gcc/config/i386/t-linux64</userinput></screen>
68
69 <para>The GCC documentation recommends building GCC in a dedicated build directory:</para>
70
71<screen><userinput remap="pre">mkdir -v build
72cd build</userinput></screen>
73
74 <para>Prepare GCC for compilation:</para>
75
76<screen arch="default"><userinput remap="configure">../configure --prefix=/usr \
77 LD=ld \
78 --enable-languages=c,c++ \
79 --disable-multilib \
80 --disable-bootstrap \
81 --with-system-zlib</userinput></screen>
82<screen arch="ml_32,ml_x32,ml_all"><userinput remap="configure"
83 arch="ml_32" >mlist=m64,m32</userinput><userinput remap="configure"
84 arch="ml_x32">mlist=m64,mx32</userinput><userinput remap="configure"
85 arch="ml_all">mlist=m64,m32,mx32</userinput>
86<userinput remap="configure">../configure --prefix=/usr \
87 LD=ld \
88 --enable-languages=c,c++ \
89 --enable-multilib \
90 --with-multilib-list=$mlist \
91 --disable-bootstrap \
92 --with-system-zlib</userinput></screen>
93
94 <para>Note that for other programming languages there are some prerequisites that
95 are not yet available. See the
96 <ulink url="&blfs-book;general/gcc.html">BLFS Book GCC page</ulink>
97 for instructions on how to build all of GCC's supported languages.</para>
98
99 <variablelist>
100 <title>The meaning of the new configure parameters:</title>
101
102 <varlistentry>
103 <term><parameter>LD=ld</parameter></term>
104 <listitem>
105 <para>This parameter makes the configure script use the ld installed
106 by the binutils built earlier in this chapter, rather than
107 the cross-built version which would otherwise be used.</para>
108 </listitem>
109 </varlistentry>
110
111 <varlistentry>
112 <term><parameter>--with-system-zlib</parameter></term>
113 <listitem>
114 <para>This switch tells GCC to link to the system installed copy of
115 the zlib library, rather than its own internal copy.</para>
116 </listitem>
117 </varlistentry>
118 </variablelist>
119
120 <para>Compile the package:</para>
121
122<screen><userinput remap="make">make</userinput></screen>
123
124 <important>
125 <para>In this section, the test suite for GCC is considered
126 important, but it takes a long time. First time builders are
127 encouraged to not skip it. The time to run the tests can be
128 reduced significantly by adding -jx to the make command below
129 where x is the number of cores on your system.</para>
130 </important>
131
132 <para>One set of tests in the GCC test suite is known to exhaust the default
133 stack, so increase the stack size prior to running the tests:</para>
134
135<screen><userinput remap="test">ulimit -s 32768</userinput></screen>
136
137 <para>Test the results as a non-privileged user, but do not stop at errors:</para>
138
139<screen><userinput remap="test">chown -Rv tester .
140su tester -c "PATH=$PATH make -k check"</userinput></screen>
141
142 <para>To receive a summary of the test suite results, run:</para>
143
144<screen><userinput remap="test">../contrib/test_summary</userinput></screen>
145
146 <para>For only the summaries, pipe the output through
147 <userinput>grep -A7 Summ</userinput>.</para>
148
149 <para>Results can be compared with those located at <ulink
150 url="&test-results;"/> and
151 <ulink url="https://gcc.gnu.org/ml/gcc-testresults/"/>.</para>
152
153 <!-- https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101081 -->
154 <para>Eight tests related to analyzer are known to fail.</para>
155
156 <!-- https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101751 -->
157 <para>One test named <filename>asan_test.C</filename> is known to
158 fail.</para>
159
160 <!-- https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100117 -->
161 <para>In libstdc++, one test named <filename>49745.cc</filename> is
162 known to fail because the header dependencies in glibc have
163 changed.</para>
164
165 <para>In libstdc++, one numpunct test and six tests related to get_time are
166 known to fail. These are all because the locale definitions in glibc have
167 changed but libstdc++ does not currently support those changes.</para>
168
169 <para>A few unexpected failures cannot always be avoided. The GCC developers
170 are usually aware of these issues, but have not resolved them yet.
171 Unless the test results are vastly different from those at the above URL,
172 it is safe to continue.</para>
173
174 <!--note><para>
175 On some combinations of kernel configuration and AMD processors
176 there may be more than 1100 failures in the gcc.target/i386/mpx
177 tests (which are designed to test the MPX option on recent
178 Intel processors). These can safely be ignored on AMD
179 processors. These tests will also fail on Intel processors if MPX support
180 is not enabled in the kernel even though it is present on the CPU.
181 </para></note-->
182
183 <!-- PR 91085, will be fixed in GCC 12. -->
184 <para>Install the package and remove an unneeded directory:</para>
185
186<screen><userinput remap="install">make install
187rm -rf /usr/lib/gcc/$(gcc -dumpmachine)/&gcc-version;/include-fixed/bits/</userinput></screen>
188
189 <para>The GCC build directory is owned by <systemitem class="username">
190 tester</systemitem> now and the ownership of the installed header
191 directory (and its content) will be incorrect. Change the ownership to
192 <systemitem class="username">root</systemitem> user and group:</para>
193
194<screen><userinput remap="install">chown -v -R root:root \
195 /usr/lib/gcc/*linux-gnu/&gcc-version;/include{,-fixed}</userinput></screen>
196
197 <para>Create a symlink required by the <ulink
198 url="https://refspecs.linuxfoundation.org/FHS_3.0/fhs/ch03s09.html">FHS</ulink>
199 for "historical" reasons.</para>
200
201<screen><userinput remap="install">ln -svr /usr/bin/cpp /usr/lib</userinput></screen>
202 <!-- already done earlier
203 <para>Many packages use the name <command>cc</command> to call the C
204 compiler. To satisfy those packages, create a symlink:</para>
205
206<screen><userinput remap="install">ln -sv gcc /usr/bin/cc</userinput></screen>
207 -->
208 <para>Add a compatibility symlink to enable building programs with
209 Link Time Optimization (LTO):</para>
210
211<screen><userinput remap="install">ln -sfv ../../libexec/gcc/$(gcc -dumpmachine)/&gcc-version;/liblto_plugin.so \
212 /usr/lib/bfd-plugins/</userinput></screen>
213
214 <para>Now that our final toolchain is in place, it is important to again ensure
215 that compiling and linking will work as expected. We do this by performing
216 some sanity checks:</para>
217
218 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
219 href="adjusting.xml"
220 xpointer="xpointer(//*[@os='a'])"/>
221
222 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
223 href="adjusting.xml"
224 xpointer="xpointer(//*[@os='b'])"/>
225
226 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
227 href="adjusting.xml"
228 xpointer="xpointer(//*[@os='c'])"/>
229
230 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
231 href="adjusting.xml"
232 xpointer="xpointer(//*[@os='d'])"/>
233
234 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
235 href="adjusting.xml"
236 xpointer="xpointer(//*[@os='e'])"/>
237
238 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
239 href="adjusting.xml"
240 xpointer="xpointer(//*[@os='f'])"/>
241
242<screen><computeroutput>/usr/lib/gcc/x86_64-pc-linux-gnu/&gcc-version;/../../../../lib/crt1.o succeeded
243/usr/lib/gcc/x86_64-pc-linux-gnu/&gcc-version;/../../../../lib/crti.o succeeded
244/usr/lib/gcc/x86_64-pc-linux-gnu/&gcc-version;/../../../../lib/crtn.o succeeded</computeroutput></screen>
245
246 <para>Depending on your machine architecture, the above may differ slightly.
247 The difference will be the name of the directory
248 after <filename class="directory">/usr/lib/gcc</filename>. The important
249 thing to look for here is that <command>gcc</command> has found all three
250 <filename>crt*.o</filename> files under the
251 <filename class="directory">/usr/lib</filename> directory.</para>
252
253 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
254 href="adjusting.xml"
255 xpointer="xpointer(//*[@os='g'])"/>
256
257<screen><userinput>grep -B4 '^ /usr/include' dummy.log</userinput></screen>
258
259 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
260 href="adjusting.xml"
261 xpointer="xpointer(//*[@os='h'])"/>
262
263<screen><computeroutput>#include &lt;...&gt; search starts here:
264 /usr/lib/gcc/x86_64-pc-linux-gnu/&gcc-version;/include
265 /usr/local/include
266 /usr/lib/gcc/x86_64-pc-linux-gnu/&gcc-version;/include-fixed
267 /usr/include</computeroutput></screen>
268
269 <para>Again, the directory named after your target triplet may be
270 different than the above, depending on your system architecture.</para>
271
272 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
273 href="adjusting.xml"
274 xpointer="xpointer(//*[@os='i'])"/>
275
276 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
277 href="adjusting.xml"
278 xpointer="xpointer(//*[@os='j'])"/>
279
280 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
281 href="adjusting.xml"
282 xpointer="xpointer(//*[@os='k'])"/>
283
284<screen><computeroutput>SEARCH_DIR("/usr/x86_64-pc-linux-gnu/lib64")
285SEARCH_DIR("/usr/local/lib64")
286SEARCH_DIR("/lib64")
287SEARCH_DIR("/usr/lib64")
288SEARCH_DIR("/usr/x86_64-pc-linux-gnu/lib")
289SEARCH_DIR("/usr/local/lib")
290SEARCH_DIR("/lib")
291SEARCH_DIR("/usr/lib");</computeroutput></screen>
292
293 <para arch="default">A 32-bit system may see a few different directories. For example, here
294 is the output from an i686 machine:</para>
295
296<!-- not using entities here as the dir names has nothing to do with multilib -->
297<screen arch="default"><computeroutput>SEARCH_DIR("/usr/i686-pc-linux-gnu/lib32")
298SEARCH_DIR("/usr/local/lib32")
299SEARCH_DIR("/lib32")
300SEARCH_DIR("/usr/lib32")
301SEARCH_DIR("/usr/i686-pc-linux-gnu/lib")
302SEARCH_DIR("/usr/local/lib")
303SEARCH_DIR("/lib")
304SEARCH_DIR("/usr/lib");</computeroutput></screen>
305
306 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
307 href="adjusting.xml"
308 xpointer="xpointer(//*[@os='l'])"/>
309
310 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
311 href="adjusting.xml"
312 xpointer="xpointer(//*[@os='m'])"/>
313
314 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
315 href="adjusting.xml"
316 xpointer="xpointer(//*[@os='n'])"/>
317
318 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
319 href="adjusting.xml"
320 xpointer="xpointer(//*[@os='o'])"/>
321
322 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
323 href="adjusting.xml"
324 xpointer="xpointer(//*[@os='p'])"/>
325
326 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
327 href="adjusting.xml"
328 xpointer="xpointer(//*[@os='q'])"/>
329
330 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
331 href="adjusting.xml"
332 xpointer="xpointer(//*[@os='r'])"/>
333
334 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
335 href="adjusting.xml"
336 xpointer="xpointer(//*[@os='s'])"/>
337
338 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
339 href="adjusting.xml"
340 xpointer="xpointer(//*[@os='t'])"/>
341
342 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
343 href="adjusting.xml"
344 xpointer="xpointer(//*[@os='u'])"/>
345
346 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
347 href="adjusting.xml"
348 xpointer="xpointer(//*[@os='v'])"/>
349
350 <para>Finally, move a misplaced file:</para>
351
352<screen><userinput remap="install">mkdir -pv /usr/share/gdb/auto-load/usr/lib
353mv -v /usr/lib/*gdb.py /usr/share/gdb/auto-load/usr/lib</userinput></screen>
354
355 </sect2>
356
357 <sect2 id="contents-gcc" role="content">
358 <title>Contents of GCC</title>
359
360 <segmentedlist>
361 <segtitle>Installed programs</segtitle>
362 <segtitle>Installed libraries</segtitle>
363 <segtitle>Installed directories</segtitle>
364
365 <seglistitem>
366 <seg>c++, cc (link to gcc), cpp, g++, gcc,
367 gcc-ar, gcc-nm, gcc-ranlib, gcov, gcov-dump, and gcov-tool</seg>
368
369 <seg>libasan.{a,so}, libatomic.{a,so}, libcc1.so, libgcc.a, libgcc_eh.a,
370 libgcc_s.so, libgcov.a, libgomp.{a,so}, libitm.{a,so},
371 liblsan.{a,so}, liblto_plugin.so,
372 libquadmath.{a,so}, libssp.{a,so}, libssp_nonshared.a,
373 libstdc++.{a,so}, libstdc++fs.a, libsupc++.a, libtsan.{a,so},
374 and libubsan.{a,so}</seg>
375
376 <seg>/usr/include/c++, /usr/lib/gcc, /usr/libexec/gcc, and
377 /usr/share/gcc-&gcc-version;</seg>
378 </seglistitem>
379 </segmentedlist>
380
381 <variablelist>
382 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
383 <?dbfo list-presentation="list"?>
384 <?dbhtml list-presentation="table"?>
385
386 <varlistentry id="c">
387 <term><command>c++</command></term>
388 <listitem>
389 <para>The C++ compiler</para>
390 <indexterm zone="ch-system-gcc c">
391 <primary sortas="b-c++">c++</primary>
392 </indexterm>
393 </listitem>
394 </varlistentry>
395
396 <varlistentry id="cc">
397 <term><command>cc</command></term>
398 <listitem>
399 <para>The C compiler</para>
400 <indexterm zone="ch-system-gcc cc">
401 <primary sortas="b-cc">cc</primary>
402 </indexterm>
403 </listitem>
404 </varlistentry>
405
406 <varlistentry id="cpp">
407 <term><command>cpp</command></term>
408 <listitem>
409 <para>The C preprocessor; it is used by the compiler to expand the
410 #include, #define, and similar statements in the source files</para>
411 <indexterm zone="ch-system-gcc cpp">
412 <primary sortas="b-cpp">cpp</primary>
413 </indexterm>
414 </listitem>
415 </varlistentry>
416
417 <varlistentry id="g">
418 <term><command>g++</command></term>
419 <listitem>
420 <para>The C++ compiler</para>
421 <indexterm zone="ch-system-gcc g">
422 <primary sortas="b-g++">g++</primary>
423 </indexterm>
424 </listitem>
425 </varlistentry>
426
427 <varlistentry id="gcc">
428 <term><command>gcc</command></term>
429 <listitem>
430 <para>The C compiler</para>
431 <indexterm zone="ch-system-gcc gcc">
432 <primary sortas="b-gcc">gcc</primary>
433 </indexterm>
434 </listitem>
435 </varlistentry>
436
437 <varlistentry id="gcc-ar">
438 <term><command>gcc-ar</command></term>
439 <listitem>
440 <para>A wrapper around <command>ar</command> that adds a
441 plugin to the command line. This program is only used
442 to add "link time optimization" and is not useful with the
443 default build options</para>
444 <indexterm zone="ch-system-gcc gcc-ar">
445 <primary sortas="b-gcc-ar">gc-ar</primary>
446 </indexterm>
447 </listitem>
448 </varlistentry>
449
450 <varlistentry id="gcc-nm">
451 <term><command>gcc-nm</command></term>
452 <listitem>
453 <para>A wrapper around <command>nm</command> that adds a
454 plugin to the command line. This program is only used
455 to add "link time optimization" and is not useful with the
456 default build options</para>
457 <indexterm zone="ch-system-gcc gcc-nm">
458 <primary sortas="b-gcc-nm">gc-nm</primary>
459 </indexterm>
460 </listitem>
461 </varlistentry>
462
463 <varlistentry id="gcc-ranlib">
464 <term><command>gcc-ranlib</command></term>
465 <listitem>
466 <para>A wrapper around <command>ranlib</command> that adds a
467 plugin to the command line. This program is only used
468 to add "link time optimization" and is not useful with the
469 default build options</para>
470 <indexterm zone="ch-system-gcc gcc-ranlib">
471 <primary sortas="b-gcc-ranlib">gc-ranlib</primary>
472 </indexterm>
473 </listitem>
474 </varlistentry>
475
476 <varlistentry id="gcov">
477 <term><command>gcov</command></term>
478 <listitem>
479 <para>A coverage testing tool; it is used to analyze programs to
480 determine where optimizations will have the most effect</para>
481 <indexterm zone="ch-system-gcc gcov">
482 <primary sortas="b-gcov">gcov</primary>
483 </indexterm>
484 </listitem>
485 </varlistentry>
486
487 <varlistentry id="gcov-dump">
488 <term><command>gcov-dump</command></term>
489 <listitem>
490 <para>Offline gcda and gcno profile dump tool</para>
491 <indexterm zone="ch-system-gcc gcov-dump">
492 <primary sortas="b-gcov-dump">gcov-dump</primary>
493 </indexterm>
494 </listitem>
495 </varlistentry>
496
497 <varlistentry id="gcov-tool">
498 <term><command>gcov-tool</command></term>
499 <listitem>
500 <para>Offline gcda profile processing tool</para>
501 <indexterm zone="ch-system-gcc gcov-tool">
502 <primary sortas="b-gcov-tool">gcov-tool</primary>
503 </indexterm>
504 </listitem>
505 </varlistentry>
506
507 <varlistentry id="libasan">
508 <term><filename class="libraryfile">libasan</filename></term>
509 <listitem>
510 <para>The Address Sanitizer runtime library</para>
511 <indexterm zone="ch-system-gcc libasan">
512 <primary sortas="b-libasan">libasan</primary>
513 </indexterm>
514 </listitem>
515 </varlistentry>
516
517 <varlistentry id="libatomic">
518 <term><filename class="libraryfile">libatomic</filename></term>
519 <listitem>
520 <para>GCC atomic built-in runtime library</para>
521 <indexterm zone="ch-system-gcc libatomic">
522 <primary sortas="b-libatomic">libatomic</primary>
523 </indexterm>
524 </listitem>
525 </varlistentry>
526
527 <varlistentry id="libcc1">
528 <term><filename class="libraryfile">libcc1</filename></term>
529 <listitem>
530 <para>The C preprocessing library</para>
531 <indexterm zone="ch-system-gcc libcc1">
532 <primary sortas="b-libcc1">libcc1</primary>
533 </indexterm>
534 </listitem>
535 </varlistentry>
536
537 <varlistentry id="libgcc">
538 <term><filename class="libraryfile">libgcc</filename></term>
539 <listitem>
540 <para>Contains run-time support for <command>gcc</command></para>
541 <indexterm zone="ch-system-gcc libgcc">
542 <primary sortas="c-libgcc">libgcc</primary>
543 </indexterm>
544 </listitem>
545 </varlistentry>
546
547 <varlistentry id="libgcov">
548 <term><filename class="libraryfile">libgcov</filename></term>
549 <listitem>
550 <para>This library is linked in to a program when GCC is instructed
551 to enable profiling</para>
552 <indexterm zone="ch-system-gcc libgcov">
553 <primary sortas="c-libgcov">libgcov</primary>
554 </indexterm>
555 </listitem>
556 </varlistentry>
557
558 <varlistentry id="libgomp">
559 <term><filename class="libraryfile">libgomp</filename></term>
560 <listitem>
561 <para>GNU implementation of the OpenMP API for multi-platform
562 shared-memory parallel programming in C/C++ and Fortran</para>
563 <indexterm zone="ch-system-gcc libgomp">
564 <primary sortas="c-libgomp">libgomp</primary>
565 </indexterm>
566 </listitem>
567 </varlistentry>
568
569 <varlistentry id="liblsan">
570 <term><filename class="libraryfile">liblsan</filename></term>
571 <listitem>
572 <para>The Leak Sanitizer runtime library</para>
573 <indexterm zone="ch-system-gcc liblsan">
574 <primary sortas="c-liblsan">liblsan</primary>
575 </indexterm>
576 </listitem>
577 </varlistentry>
578
579 <varlistentry id="liblto_plugin">
580 <term><filename class="libraryfile">liblto_plugin</filename></term>
581 <listitem>
582 <para>GCC's Link Time Optimization (LTO) plugin allows GCC to perform
583 optimizations across compilation units</para>
584 <indexterm zone="ch-system-gcc liblto_plugin">
585 <primary sortas="c-liblto_plugin">liblto_plugin</primary>
586 </indexterm>
587 </listitem>
588 </varlistentry>
589
590 <varlistentry id="libquadmath">
591 <term><filename class="libraryfile">libquadmath</filename></term>
592 <listitem>
593 <para>GCC Quad Precision Math Library API</para>
594 <indexterm zone="ch-system-gcc libquadmath">
595 <primary sortas="c-libquadmath">libquadmath</primary>
596 </indexterm>
597 </listitem>
598 </varlistentry>
599
600 <varlistentry id="libssp">
601 <term><filename class="libraryfile">libssp</filename></term>
602 <listitem>
603 <para>Contains routines supporting GCC's stack-smashing protection
604 functionality</para>
605 <indexterm zone="ch-system-gcc libssp">
606 <primary sortas="c-libssp">libssp</primary>
607 </indexterm>
608 </listitem>
609 </varlistentry>
610
611 <varlistentry id="libstdc">
612 <term><filename class="libraryfile">libstdc++</filename></term>
613 <listitem>
614 <para>The standard C++ library</para>
615 <indexterm zone="ch-system-gcc libstdc">
616 <primary sortas="c-libstdc++">libstdc++</primary>
617 </indexterm>
618 </listitem>
619 </varlistentry>
620
621 <varlistentry id="libstdcfs">
622 <term><filename class="libraryfile">libstdc++fs</filename></term>
623 <listitem>
624 <para>ISO/IEC TS 18822:2015 Filesystem library</para>
625 <indexterm zone="ch-system-gcc libstdcfs">
626 <primary sortas="c-libstdc++fs">libstdc++fs</primary>
627 </indexterm>
628 </listitem>
629 </varlistentry>
630
631 <varlistentry id="libsupc">
632 <term><filename class="libraryfile">libsupc++</filename></term>
633 <listitem>
634 <para>Provides supporting routines for the C++ programming
635 language</para>
636 <indexterm zone="ch-system-gcc libsupc">
637 <primary sortas="c-libsupc++">libsupc++</primary>
638 </indexterm>
639 </listitem>
640 </varlistentry>
641
642 <varlistentry id="libtsan">
643 <term><filename class="libraryfile">libtsan</filename></term>
644 <listitem>
645 <para>The Thread Sanitizer runtime library</para>
646 <indexterm zone="ch-system-gcc libtsan">
647 <primary sortas="c-libtsan">libtsan</primary>
648 </indexterm>
649 </listitem>
650 </varlistentry>
651
652 <varlistentry id="libubsan">
653 <term><filename class="libraryfile">libubsan</filename></term>
654 <listitem>
655 <para>The Undefined Behavior Sanitizer runtime library</para>
656 <indexterm zone="ch-system-gcc libubsan">
657 <primary sortas="c-libubsan">libubsan</primary>
658 </indexterm>
659 </listitem>
660 </varlistentry>
661
662 </variablelist>
663
664 </sect2>
665
666</sect1>
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