source: chapter08/gcc.xml@ 460f575

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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 aarch64, change the default directory name for 64-bit
53 libraries to <quote>lib</quote>:</para>
54
55<screen><userinput remap="pre">case $(uname -m) in
56 aarch64)
57 sed -e '/mabi.lp64=/s/lib64/lib/' \
58 -i.orig gcc/config/aarch64/t-aarch64-linux
59 ;;
60esac</userinput></screen>
61
62 <para>The GCC documentation recommends building GCC in a dedicated build directory:</para>
63
64<screen><userinput remap="pre">mkdir -v build
65cd build</userinput></screen>
66
67 <para>Prepare GCC for compilation:</para>
68
69<screen><userinput remap="configure">../configure --prefix=/usr \
70 LD=ld \
71 --enable-languages=c,c++ \
72 --disable-multilib \
73 --disable-bootstrap \
74 --with-system-zlib</userinput></screen>
75
76 <para>Note that for other programming languages there are some prerequisites that
77 are not yet available. See the
78 <ulink url="&blfs-book;general/gcc.html">BLFS Book GCC page</ulink>
79 for instructions on how to build all of GCC's supported languages.</para>
80
81 <variablelist>
82 <title>The meaning of the new configure parameters:</title>
83
84 <varlistentry>
85 <term><parameter>LD=ld</parameter></term>
86 <listitem>
87 <para>This parameter makes the configure script use the ld installed
88 by the binutils built earlier in this chapter, rather than
89 the cross-built version which would otherwise be used.</para>
90 </listitem>
91 </varlistentry>
92
93 <varlistentry>
94 <term><parameter>--with-system-zlib</parameter></term>
95 <listitem>
96 <para>This switch tells GCC to link to the system installed copy of
97 the zlib library, rather than its own internal copy.</para>
98 </listitem>
99 </varlistentry>
100 </variablelist>
101
102 <para>Compile the package:</para>
103
104<screen><userinput remap="make">make</userinput></screen>
105
106 <important>
107 <para>In this section, the test suite for GCC is considered
108 important, but it takes a long time. First time builders are
109 encouraged to not skip it. The time to run the tests can be
110 reduced significantly by adding -jx to the make command below
111 where x is the number of cores on your system.</para>
112 </important>
113
114 <para>One set of tests in the GCC test suite is known to exhaust the default
115 stack, so increase the stack size prior to running the tests:</para>
116
117<screen><userinput remap="test">ulimit -s 32768</userinput></screen>
118
119 <para>Test the results as a non-privileged user, but do not stop at errors:</para>
120
121<screen><userinput remap="test">chown -Rv tester .
122su tester -c "PATH=$PATH make -k check"</userinput></screen>
123
124 <para>To receive a summary of the test suite results, run:</para>
125
126<screen><userinput remap="test">../contrib/test_summary</userinput></screen>
127
128 <para>For only the summaries, pipe the output through
129 <userinput>grep -A7 Summ</userinput>.</para>
130
131 <para>Results can be compared with those located at <ulink
132 url="&test-results;"/> and
133 <ulink url="https://gcc.gnu.org/ml/gcc-testresults/"/>.</para>
134
135 <!-- https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101081 -->
136 <para>Eight tests related to analyzer are known to fail.</para>
137
138 <!-- https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101751 -->
139 <para>One test named <filename>asan_test.C</filename> is known to
140 fail.</para>
141
142 <!-- https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100117 -->
143 <para>In libstdc++, one test named <filename>49745.cc</filename> is
144 known to fail because the header dependencies in glibc have
145 changed.</para>
146
147 <para>In libstdc++, one numpunct test and six tests related to get_time are
148 known to fail. These are all because the locale definitions in glibc have
149 changed but libstdc++ does not currently support those changes.</para>
150
151 <para>A few unexpected failures cannot always be avoided. The GCC developers
152 are usually aware of these issues, but have not resolved them yet.
153 Unless the test results are vastly different from those at the above URL,
154 it is safe to continue.</para>
155
156 <!--note><para>
157 On some combinations of kernel configuration and AMD processors
158 there may be more than 1100 failures in the gcc.target/i386/mpx
159 tests (which are designed to test the MPX option on recent
160 Intel processors). These can safely be ignored on AMD
161 processors. These tests will also fail on Intel processors if MPX support
162 is not enabled in the kernel even though it is present on the CPU.
163 </para></note-->
164
165 <!-- PR 91085, will be fixed in GCC 12. -->
166 <para>Install the package and remove an unneeded directory:</para>
167
168<screen><userinput remap="install">make install
169rm -rf /usr/lib/gcc/$(gcc -dumpmachine)/&gcc-version;/include-fixed/bits/</userinput></screen>
170
171 <para>The GCC build directory is owned by <systemitem class="username">
172 tester</systemitem> now and the ownership of the installed header
173 directory (and its content) will be incorrect. Change the ownership to
174 <systemitem class="username">root</systemitem> user and group:</para>
175
176<screen><userinput remap="install">chown -v -R root:root \
177 /usr/lib/gcc/*linux-gnu/&gcc-version;/include{,-fixed}</userinput></screen>
178
179 <para>Create a symlink required by the <ulink
180 url="https://refspecs.linuxfoundation.org/FHS_3.0/fhs/ch03s09.html">FHS</ulink>
181 for "historical" reasons.</para>
182
183<screen><userinput remap="install">ln -svr /usr/bin/cpp /usr/lib</userinput></screen>
184 <!-- already done earlier
185 <para>Many packages use the name <command>cc</command> to call the C
186 compiler. To satisfy those packages, create a symlink:</para>
187
188<screen><userinput remap="install">ln -sv gcc /usr/bin/cc</userinput></screen>
189 -->
190 <para>Add a compatibility symlink to enable building programs with
191 Link Time Optimization (LTO):</para>
192
193<screen><userinput remap="install">ln -sfv ../../libexec/gcc/$(gcc -dumpmachine)/&gcc-version;/liblto_plugin.so \
194 /usr/lib/bfd-plugins/</userinput></screen>
195
196 <para>Now that our final toolchain is in place, it is important to again ensure
197 that compiling and linking will work as expected. We do this by performing
198 some sanity checks:</para>
199
200 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
201 href="adjusting.xml"
202 xpointer="xpointer(//*[@os='a'])"/>
203
204 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
205 href="adjusting.xml"
206 xpointer="xpointer(//*[@os='b'])"/>
207
208 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
209 href="adjusting.xml"
210 xpointer="xpointer(//*[@os='c'])"/>
211
212 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
213 href="adjusting.xml"
214 xpointer="xpointer(//*[@os='d'])"/>
215
216 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
217 href="adjusting.xml"
218 xpointer="xpointer(//*[@os='e'])"/>
219
220 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
221 href="adjusting.xml"
222 xpointer="xpointer(//*[@os='f'])"/>
223
224<screen><computeroutput>/usr/lib/gcc/aarch64-unknown-linux-gnu/&gcc-version;/../../../../lib/crt1.o succeeded
225/usr/lib/gcc/aarch64-unknown-linux-gnu/&gcc-version;/../../../../lib/crti.o succeeded
226/usr/lib/gcc/aarch64-unknown-linux-gnu/&gcc-version;/../../../../lib/crtn.o succeeded</computeroutput></screen>
227
228 <para>Depending on your machine architecture, the above may differ slightly.
229 The difference will be the name of the directory
230 after <filename class="directory">/usr/lib/gcc</filename>. The important
231 thing to look for here is that <command>gcc</command> has found all three
232 <filename>crt*.o</filename> files under the
233 <filename class="directory">/usr/lib</filename> directory.</para>
234
235 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
236 href="adjusting.xml"
237 xpointer="xpointer(//*[@os='g'])"/>
238
239<screen><userinput>grep -B4 '^ /usr/include' dummy.log</userinput></screen>
240
241 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
242 href="adjusting.xml"
243 xpointer="xpointer(//*[@os='h'])"/>
244
245<screen><computeroutput>#include &lt;...&gt; search starts here:
246 /usr/lib/gcc/aarch-64-unknown-linux-gnu/&gcc-version;/include
247 /usr/local/include
248 /usr/lib/gcc/aarch64-unknown-linux-gnu/&gcc-version;/include-fixed
249 /usr/include</computeroutput></screen>
250
251 <para>Again, the directory named after your target triplet may be
252 different than the above, depending on your system architecture.</para>
253
254 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
255 href="adjusting.xml"
256 xpointer="xpointer(//*[@os='i'])"/>
257
258 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
259 href="adjusting.xml"
260 xpointer="xpointer(//*[@os='j'])"/>
261
262 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
263 href="adjusting.xml"
264 xpointer="xpointer(//*[@os='k'])"/>
265
266<screen><computeroutput>SEARCH_DIR("/usr/aarch64-unknown-linux-gnu/lib64")
267SEARCH_DIR("/usr/local/lib64")
268SEARCH_DIR("/lib64")
269SEARCH_DIR("/usr/lib64")
270SEARCH_DIR("/usr/aarch64-unknown-linux-gnu/lib")
271SEARCH_DIR("/usr/local/lib")
272SEARCH_DIR("/lib")
273SEARCH_DIR("/usr/lib");</computeroutput></screen>
274
275 <para>A 32-bit system may see a few different directories. For example, here
276 is the output from a 32bit ARM machine:</para>
277
278<screen><computeroutput>SEARCH_DIR("/usr/armv6l-unknown-linux-gnueabihf/lib")
279SEARCH_DIR("/usr/local/lib")
280SEARCH_DIR("/lib")
281SEARCH_DIR("/usr/lib");</computeroutput></screen>
282
283 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
284 href="adjusting.xml"
285 xpointer="xpointer(//*[@os='l'])"/>
286
287 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
288 href="adjusting.xml"
289 xpointer="xpointer(//*[@os='m'])"/>
290
291 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
292 href="adjusting.xml"
293 xpointer="xpointer(//*[@os='n'])"/>
294
295 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
296 href="adjusting.xml"
297 xpointer="xpointer(//*[@os='o'])"/>
298
299 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
300 href="adjusting.xml"
301 xpointer="xpointer(//*[@os='p'])"/>
302
303 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
304 href="adjusting.xml"
305 xpointer="xpointer(//*[@os='q'])"/>
306
307 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
308 href="adjusting.xml"
309 xpointer="xpointer(//*[@os='r'])"/>
310
311 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
312 href="adjusting.xml"
313 xpointer="xpointer(//*[@os='s'])"/>
314
315 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
316 href="adjusting.xml"
317 xpointer="xpointer(//*[@os='t'])"/>
318
319 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
320 href="adjusting.xml"
321 xpointer="xpointer(//*[@os='u'])"/>
322
323 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
324 href="adjusting.xml"
325 xpointer="xpointer(//*[@os='v'])"/>
326
327 <para>Finally, move a misplaced file:</para>
328
329<screen><userinput remap="install">mkdir -pv /usr/share/gdb/auto-load/usr/lib
330mv -v /usr/lib/*gdb.py /usr/share/gdb/auto-load/usr/lib</userinput></screen>
331
332 </sect2>
333
334 <sect2 id="contents-gcc" role="content">
335 <title>Contents of GCC</title>
336
337 <segmentedlist>
338 <segtitle>Installed programs</segtitle>
339 <segtitle>Installed libraries</segtitle>
340 <segtitle>Installed directories</segtitle>
341
342 <seglistitem>
343 <seg>c++, cc (link to gcc), cpp, g++, gcc,
344 gcc-ar, gcc-nm, gcc-ranlib, gcov, gcov-dump, gcov-tool,
345 and lto-dump</seg>
346
347 <seg>libasan.{a,so}, libatomic.{a,so}, libcc1.so, libgcc.a, libgcc_eh.a,
348 libgcc_s.so, libgcov.a, libgomp.{a,so}, libitm.{a,so},
349 liblsan.{a,so}, liblto_plugin.so,
350 libssp.{a,so}, libssp_nonshared.a,
351 libstdc++.{a,so}, libstdc++fs.a, libsupc++.a, libtsan.{a,so},
352 and libubsan.{a,so}</seg>
353
354 <seg>/usr/include/c++, /usr/lib/gcc, /usr/libexec/gcc, and
355 /usr/share/gcc-&gcc-version;</seg>
356 </seglistitem>
357 </segmentedlist>
358
359 <variablelist>
360 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
361 <?dbfo list-presentation="list"?>
362 <?dbhtml list-presentation="table"?>
363
364 <varlistentry id="c">
365 <term><command>c++</command></term>
366 <listitem>
367 <para>The C++ compiler</para>
368 <indexterm zone="ch-system-gcc c">
369 <primary sortas="b-c++">c++</primary>
370 </indexterm>
371 </listitem>
372 </varlistentry>
373
374 <varlistentry id="cc">
375 <term><command>cc</command></term>
376 <listitem>
377 <para>The C compiler</para>
378 <indexterm zone="ch-system-gcc cc">
379 <primary sortas="b-cc">cc</primary>
380 </indexterm>
381 </listitem>
382 </varlistentry>
383
384 <varlistentry id="cpp">
385 <term><command>cpp</command></term>
386 <listitem>
387 <para>The C preprocessor; it is used by the compiler to expand the
388 #include, #define, and similar statements in the source files</para>
389 <indexterm zone="ch-system-gcc cpp">
390 <primary sortas="b-cpp">cpp</primary>
391 </indexterm>
392 </listitem>
393 </varlistentry>
394
395 <varlistentry id="g">
396 <term><command>g++</command></term>
397 <listitem>
398 <para>The C++ compiler</para>
399 <indexterm zone="ch-system-gcc g">
400 <primary sortas="b-g++">g++</primary>
401 </indexterm>
402 </listitem>
403 </varlistentry>
404
405 <varlistentry id="gcc">
406 <term><command>gcc</command></term>
407 <listitem>
408 <para>The C compiler</para>
409 <indexterm zone="ch-system-gcc gcc">
410 <primary sortas="b-gcc">gcc</primary>
411 </indexterm>
412 </listitem>
413 </varlistentry>
414
415 <varlistentry id="gcc-ar">
416 <term><command>gcc-ar</command></term>
417 <listitem>
418 <para>A wrapper around <command>ar</command> that adds a
419 plugin to the command line. This program is only used
420 to add "link time optimization" and is not useful with the
421 default build options</para>
422 <indexterm zone="ch-system-gcc gcc-ar">
423 <primary sortas="b-gcc-ar">gc-ar</primary>
424 </indexterm>
425 </listitem>
426 </varlistentry>
427
428 <varlistentry id="gcc-nm">
429 <term><command>gcc-nm</command></term>
430 <listitem>
431 <para>A wrapper around <command>nm</command> that adds a
432 plugin to the command line. This program is only used
433 to add "link time optimization" and is not useful with the
434 default build options</para>
435 <indexterm zone="ch-system-gcc gcc-nm">
436 <primary sortas="b-gcc-nm">gc-nm</primary>
437 </indexterm>
438 </listitem>
439 </varlistentry>
440
441 <varlistentry id="gcc-ranlib">
442 <term><command>gcc-ranlib</command></term>
443 <listitem>
444 <para>A wrapper around <command>ranlib</command> that adds a
445 plugin to the command line. This program is only used
446 to add "link time optimization" and is not useful with the
447 default build options</para>
448 <indexterm zone="ch-system-gcc gcc-ranlib">
449 <primary sortas="b-gcc-ranlib">gc-ranlib</primary>
450 </indexterm>
451 </listitem>
452 </varlistentry>
453
454 <varlistentry id="gcov">
455 <term><command>gcov</command></term>
456 <listitem>
457 <para>A coverage testing tool; it is used to analyze programs to
458 determine where optimizations will have the most effect</para>
459 <indexterm zone="ch-system-gcc gcov">
460 <primary sortas="b-gcov">gcov</primary>
461 </indexterm>
462 </listitem>
463 </varlistentry>
464
465 <varlistentry id="gcov-dump">
466 <term><command>gcov-dump</command></term>
467 <listitem>
468 <para>Offline gcda and gcno profile dump tool</para>
469 <indexterm zone="ch-system-gcc gcov-dump">
470 <primary sortas="b-gcov-dump">gcov-dump</primary>
471 </indexterm>
472 </listitem>
473 </varlistentry>
474
475 <varlistentry id="gcov-tool">
476 <term><command>gcov-tool</command></term>
477 <listitem>
478 <para>Offline gcda profile processing tool</para>
479 <indexterm zone="ch-system-gcc gcov-tool">
480 <primary sortas="b-gcov-tool">gcov-tool</primary>
481 </indexterm>
482 </listitem>
483 </varlistentry>
484
485 <varlistentry id="lto-dump">
486 <term><command>lto-dump</command></term>
487 <listitem>
488 <para>Tool for dumping object files produced by GCC with LTO
489 enabled</para>
490 <indexterm zone="ch-system-gcc lto-dump">
491 <primary sortas="b-lto-dump">lto-dump</primary>
492 </indexterm>
493 </listitem>
494 </varlistentry>
495
496 <varlistentry id="libasan">
497 <term><filename class="libraryfile">libasan</filename></term>
498 <listitem>
499 <para>The Address Sanitizer runtime library</para>
500 <indexterm zone="ch-system-gcc libasan">
501 <primary sortas="b-libasan">libasan</primary>
502 </indexterm>
503 </listitem>
504 </varlistentry>
505
506 <varlistentry id="libatomic">
507 <term><filename class="libraryfile">libatomic</filename></term>
508 <listitem>
509 <para>GCC atomic built-in runtime library</para>
510 <indexterm zone="ch-system-gcc libatomic">
511 <primary sortas="b-libatomic">libatomic</primary>
512 </indexterm>
513 </listitem>
514 </varlistentry>
515
516 <varlistentry id="libcc1">
517 <term><filename class="libraryfile">libcc1</filename></term>
518 <listitem>
519 <para>The C preprocessing library</para>
520 <indexterm zone="ch-system-gcc libcc1">
521 <primary sortas="b-libcc1">libcc1</primary>
522 </indexterm>
523 </listitem>
524 </varlistentry>
525
526 <varlistentry id="libgcc">
527 <term><filename class="libraryfile">libgcc</filename></term>
528 <listitem>
529 <para>Contains run-time support for <command>gcc</command></para>
530 <indexterm zone="ch-system-gcc libgcc">
531 <primary sortas="c-libgcc">libgcc</primary>
532 </indexterm>
533 </listitem>
534 </varlistentry>
535
536 <varlistentry id="libgcov">
537 <term><filename class="libraryfile">libgcov</filename></term>
538 <listitem>
539 <para>This library is linked in to a program when GCC is instructed
540 to enable profiling</para>
541 <indexterm zone="ch-system-gcc libgcov">
542 <primary sortas="c-libgcov">libgcov</primary>
543 </indexterm>
544 </listitem>
545 </varlistentry>
546
547 <varlistentry id="libgomp">
548 <term><filename class="libraryfile">libgomp</filename></term>
549 <listitem>
550 <para>GNU implementation of the OpenMP API for multi-platform
551 shared-memory parallel programming in C/C++ and Fortran</para>
552 <indexterm zone="ch-system-gcc libgomp">
553 <primary sortas="c-libgomp">libgomp</primary>
554 </indexterm>
555 </listitem>
556 </varlistentry>
557
558 <varlistentry id="libitm">
559 <term><filename class="libraryfile">libitm</filename></term>
560 <listitem>
561 <para>The GNU transactional memory library</para>
562 <indexterm zone="ch-system-gcc libitm">
563 <primary sortas="c-libitm">libitm</primary>
564 </indexterm>
565 </listitem>
566 </varlistentry>
567
568 <varlistentry id="liblsan">
569 <term><filename class="libraryfile">liblsan</filename></term>
570 <listitem>
571 <para>The Leak Sanitizer runtime library</para>
572 <indexterm zone="ch-system-gcc liblsan">
573 <primary sortas="c-liblsan">liblsan</primary>
574 </indexterm>
575 </listitem>
576 </varlistentry>
577
578 <varlistentry id="liblto_plugin">
579 <term><filename class="libraryfile">liblto_plugin</filename></term>
580 <listitem>
581 <para>GCC's LTO plugin allows binutils to process object files
582 produced by GCC with LTO enabled</para>
583 <indexterm zone="ch-system-gcc liblto_plugin">
584 <primary sortas="c-liblto_plugin">liblto_plugin</primary>
585 </indexterm>
586 </listitem>
587 </varlistentry>
588
589 <varlistentry id="libquadmath">
590 <term><filename class="libraryfile">libquadmath</filename></term>
591 <listitem>
592 <para>GCC Quad Precision Math Library API</para>
593 <indexterm zone="ch-system-gcc libquadmath">
594 <primary sortas="c-libquadmath">libquadmath</primary>
595 </indexterm>
596 </listitem>
597 </varlistentry>
598
599 <varlistentry id="libssp">
600 <term><filename class="libraryfile">libssp</filename></term>
601 <listitem>
602 <para>Contains routines supporting GCC's stack-smashing protection
603 functionality</para>
604 <indexterm zone="ch-system-gcc libssp">
605 <primary sortas="c-libssp">libssp</primary>
606 </indexterm>
607 </listitem>
608 </varlistentry>
609
610 <varlistentry id="libstdc">
611 <term><filename class="libraryfile">libstdc++</filename></term>
612 <listitem>
613 <para>The standard C++ library</para>
614 <indexterm zone="ch-system-gcc libstdc">
615 <primary sortas="c-libstdc++">libstdc++</primary>
616 </indexterm>
617 </listitem>
618 </varlistentry>
619
620 <varlistentry id="libstdcfs">
621 <term><filename class="libraryfile">libstdc++fs</filename></term>
622 <listitem>
623 <para>ISO/IEC TS 18822:2015 Filesystem library</para>
624 <indexterm zone="ch-system-gcc libstdcfs">
625 <primary sortas="c-libstdc++fs">libstdc++fs</primary>
626 </indexterm>
627 </listitem>
628 </varlistentry>
629
630 <varlistentry id="libsupc">
631 <term><filename class="libraryfile">libsupc++</filename></term>
632 <listitem>
633 <para>Provides supporting routines for the C++ programming
634 language</para>
635 <indexterm zone="ch-system-gcc libsupc">
636 <primary sortas="c-libsupc++">libsupc++</primary>
637 </indexterm>
638 </listitem>
639 </varlistentry>
640
641 <varlistentry id="libtsan">
642 <term><filename class="libraryfile">libtsan</filename></term>
643 <listitem>
644 <para>The Thread Sanitizer runtime library</para>
645 <indexterm zone="ch-system-gcc libtsan">
646 <primary sortas="c-libtsan">libtsan</primary>
647 </indexterm>
648 </listitem>
649 </varlistentry>
650
651 <varlistentry id="libubsan">
652 <term><filename class="libraryfile">libubsan</filename></term>
653 <listitem>
654 <para>The Undefined Behavior Sanitizer runtime library</para>
655 <indexterm zone="ch-system-gcc libubsan">
656 <primary sortas="c-libubsan">libubsan</primary>
657 </indexterm>
658 </listitem>
659 </varlistentry>
660
661 </variablelist>
662
663 </sect2>
664
665</sect1>
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