source: chapter08/gcc.xml@ 30ae09bb

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Last change on this file since 30ae09bb was 30ae09bb, checked in by Xi Ruoyao <xry111@…>, 10 months ago

cross-ng: gcc: don't rely on "uname -m"

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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>For x86_64 target, set the default directory name for
53 64-bit libraries to <quote>lib</quote>. The command is unnecessary,
54 but harmless for 32-bit x86. If you are building for another target,
55 you may need to adjust the command for your target.</para>
56
57<screen><userinput remap="pre">sed -e '/m64=/s/lib64/lib/' \
58 -i.orig gcc/config/i386/t-linux64</userinput></screen>
59
60 <para>The GCC documentation recommends building GCC in a dedicated build directory:</para>
61
62<screen><userinput remap="pre">mkdir -v build
63cd build</userinput></screen>
64
65 <para>Prepare GCC for compilation:</para>
66
67<screen><userinput remap="configure">../configure --prefix=/usr \
68 LD=ld \
69 --enable-languages=c,c++ \
70 --disable-multilib \
71 --disable-bootstrap \
72 --with-system-zlib</userinput></screen>
73
74 <para>Note that for other programming languages there are some prerequisites that
75 are not yet available. See the
76 <ulink url="&blfs-book;general/gcc.html">BLFS Book GCC page</ulink>
77 for instructions on how to build all of GCC's supported languages.</para>
78
79 <variablelist>
80 <title>The meaning of the new configure parameters:</title>
81
82 <varlistentry>
83 <term><parameter>LD=ld</parameter></term>
84 <listitem>
85 <para>This parameter makes the configure script use the ld installed
86 by the binutils built earlier in this chapter, rather than
87 the cross-built version which would otherwise be used.</para>
88 </listitem>
89 </varlistentry>
90
91 <varlistentry>
92 <term><parameter>--with-system-zlib</parameter></term>
93 <listitem>
94 <para>This switch tells GCC to link to the system installed copy of
95 the zlib library, rather than its own internal copy.</para>
96 </listitem>
97 </varlistentry>
98 </variablelist>
99
100 <para>Compile the package:</para>
101
102<screen><userinput remap="make">make</userinput></screen>
103
104 <important>
105 <para>In this section, the test suite for GCC is considered
106 important, but it takes a long time. First time builders are
107 encouraged to not skip it. The time to run the tests can be
108 reduced significantly by adding -jx to the make command below
109 where x is the number of cores on your system.</para>
110 </important>
111
112 <para>One set of tests in the GCC test suite is known to exhaust the default
113 stack, so increase the stack size prior to running the tests:</para>
114
115<screen><userinput remap="test">ulimit -s 32768</userinput></screen>
116
117 <para>Test the results as a non-privileged user, but do not stop at errors:</para>
118
119<screen><userinput remap="test">chown -Rv tester .
120su tester -c "PATH=$PATH make -k check"</userinput></screen>
121
122 <para>To receive a summary of the test suite results, run:</para>
123
124<screen><userinput remap="test">../contrib/test_summary</userinput></screen>
125
126 <para>For only the summaries, pipe the output through
127 <userinput>grep -A7 Summ</userinput>.</para>
128
129 <para>Results can be compared with those located at <ulink
130 url="&test-results;"/> and
131 <ulink url="https://gcc.gnu.org/ml/gcc-testresults/"/>.</para>
132
133 <!-- https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101081 -->
134 <para>Eight tests related to analyzer are known to fail.</para>
135
136 <!-- https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101751 -->
137 <para>One test named <filename>asan_test.C</filename> is known to
138 fail.</para>
139
140 <!-- https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100117 -->
141 <para>In libstdc++, one test named <filename>49745.cc</filename> is
142 known to fail because the header dependencies in glibc have
143 changed.</para>
144
145 <para>In libstdc++, one numpunct test and six tests related to get_time are
146 known to fail. These are all because the locale definitions in glibc have
147 changed but libstdc++ does not currently support those changes.</para>
148
149 <para>A few unexpected failures cannot always be avoided. The GCC developers
150 are usually aware of these issues, but have not resolved them yet.
151 Unless the test results are vastly different from those at the above URL,
152 it is safe to continue.</para>
153
154 <!--note><para>
155 On some combinations of kernel configuration and AMD processors
156 there may be more than 1100 failures in the gcc.target/i386/mpx
157 tests (which are designed to test the MPX option on recent
158 Intel processors). These can safely be ignored on AMD
159 processors. These tests will also fail on Intel processors if MPX support
160 is not enabled in the kernel even though it is present on the CPU.
161 </para></note-->
162
163 <!-- PR 91085, will be fixed in GCC 12. -->
164 <para>Install the package and remove an unneeded directory:</para>
165
166<screen><userinput remap="install">make install
167rm -rf /usr/lib/gcc/$(gcc -dumpmachine)/&gcc-version;/include-fixed/bits/</userinput></screen>
168
169 <para>The GCC build directory is owned by <systemitem class="username">
170 tester</systemitem> now and the ownership of the installed header
171 directory (and its content) will be incorrect. Change the ownership to
172 <systemitem class="username">root</systemitem> user and group:</para>
173
174<screen><userinput remap="install">chown -v -R root:root \
175 /usr/lib/gcc/*linux-gnu/&gcc-version;/include{,-fixed}</userinput></screen>
176
177 <para>Create a symlink required by the <ulink
178 url="https://refspecs.linuxfoundation.org/FHS_3.0/fhs/ch03s09.html">FHS</ulink>
179 for "historical" reasons.</para>
180
181<screen><userinput remap="install">ln -svr /usr/bin/cpp /usr/lib</userinput></screen>
182 <!-- already done earlier
183 <para>Many packages use the name <command>cc</command> to call the C
184 compiler. To satisfy those packages, create a symlink:</para>
185
186<screen><userinput remap="install">ln -sv gcc /usr/bin/cc</userinput></screen>
187 -->
188 <para>Add a compatibility symlink to enable building programs with
189 Link Time Optimization (LTO):</para>
190
191<screen><userinput remap="install">ln -sfv ../../libexec/gcc/$(gcc -dumpmachine)/&gcc-version;/liblto_plugin.so \
192 /usr/lib/bfd-plugins/</userinput></screen>
193
194 <para>Now that our final toolchain is in place, it is important to again ensure
195 that compiling and linking will work as expected. We do this by performing
196 some sanity checks:</para>
197
198 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
199 href="adjusting.xml"
200 xpointer="xpointer(//*[@os='a'])"/>
201
202 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
203 href="adjusting.xml"
204 xpointer="xpointer(//*[@os='b'])"/>
205
206 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
207 href="adjusting.xml"
208 xpointer="xpointer(//*[@os='c'])"/>
209
210 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
211 href="adjusting.xml"
212 xpointer="xpointer(//*[@os='d'])"/>
213
214 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
215 href="adjusting.xml"
216 xpointer="xpointer(//*[@os='e'])"/>
217
218 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
219 href="adjusting.xml"
220 xpointer="xpointer(//*[@os='f'])"/>
221
222<screen><computeroutput>/usr/lib/gcc/x86_64-pc-linux-gnu/&gcc-version;/../../../../lib/crt1.o succeeded
223/usr/lib/gcc/x86_64-pc-linux-gnu/&gcc-version;/../../../../lib/crti.o succeeded
224/usr/lib/gcc/x86_64-pc-linux-gnu/&gcc-version;/../../../../lib/crtn.o succeeded</computeroutput></screen>
225
226 <para>Depending on your machine architecture, the above may differ slightly.
227 The difference will be the name of the directory
228 after <filename class="directory">/usr/lib/gcc</filename>. The important
229 thing to look for here is that <command>gcc</command> has found all three
230 <filename>crt*.o</filename> files under the
231 <filename class="directory">/usr/lib</filename> directory.</para>
232
233 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
234 href="adjusting.xml"
235 xpointer="xpointer(//*[@os='g'])"/>
236
237<screen><userinput>grep -B4 '^ /usr/include' dummy.log</userinput></screen>
238
239 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
240 href="adjusting.xml"
241 xpointer="xpointer(//*[@os='h'])"/>
242
243<screen><computeroutput>#include &lt;...&gt; search starts here:
244 /usr/lib/gcc/x86_64-pc-linux-gnu/&gcc-version;/include
245 /usr/local/include
246 /usr/lib/gcc/x86_64-pc-linux-gnu/&gcc-version;/include-fixed
247 /usr/include</computeroutput></screen>
248
249 <para>Again, the directory named after your target triplet may be
250 different than the above, depending on your system architecture.</para>
251
252 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
253 href="adjusting.xml"
254 xpointer="xpointer(//*[@os='i'])"/>
255
256 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
257 href="adjusting.xml"
258 xpointer="xpointer(//*[@os='j'])"/>
259
260 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
261 href="adjusting.xml"
262 xpointer="xpointer(//*[@os='k'])"/>
263
264<screen><computeroutput>SEARCH_DIR("/usr/x86_64-pc-linux-gnu/lib64")
265SEARCH_DIR("/usr/local/lib64")
266SEARCH_DIR("/lib64")
267SEARCH_DIR("/usr/lib64")
268SEARCH_DIR("/usr/x86_64-pc-linux-gnu/lib")
269SEARCH_DIR("/usr/local/lib")
270SEARCH_DIR("/lib")
271SEARCH_DIR("/usr/lib");</computeroutput></screen>
272
273 <para>A 32-bit system may see a few different directories. For example, here
274 is the output from an i686 machine:</para>
275
276<screen><computeroutput>SEARCH_DIR("/usr/i686-pc-linux-gnu/lib32")
277SEARCH_DIR("/usr/local/lib32")
278SEARCH_DIR("/lib32")
279SEARCH_DIR("/usr/lib32")
280SEARCH_DIR("/usr/i686-pc-linux-gnu/lib")
281SEARCH_DIR("/usr/local/lib")
282SEARCH_DIR("/lib")
283SEARCH_DIR("/usr/lib");</computeroutput></screen>
284
285 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
286 href="adjusting.xml"
287 xpointer="xpointer(//*[@os='l'])"/>
288
289 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
290 href="adjusting.xml"
291 xpointer="xpointer(//*[@os='m'])"/>
292
293 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
294 href="adjusting.xml"
295 xpointer="xpointer(//*[@os='n'])"/>
296
297 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
298 href="adjusting.xml"
299 xpointer="xpointer(//*[@os='o'])"/>
300
301 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
302 href="adjusting.xml"
303 xpointer="xpointer(//*[@os='p'])"/>
304
305 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
306 href="adjusting.xml"
307 xpointer="xpointer(//*[@os='q'])"/>
308
309 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
310 href="adjusting.xml"
311 xpointer="xpointer(//*[@os='r'])"/>
312
313 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
314 href="adjusting.xml"
315 xpointer="xpointer(//*[@os='s'])"/>
316
317 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
318 href="adjusting.xml"
319 xpointer="xpointer(//*[@os='t'])"/>
320
321 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
322 href="adjusting.xml"
323 xpointer="xpointer(//*[@os='u'])"/>
324
325 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
326 href="adjusting.xml"
327 xpointer="xpointer(//*[@os='v'])"/>
328
329 <para>Finally, move a misplaced file:</para>
330
331<screen><userinput remap="install">mkdir -pv /usr/share/gdb/auto-load/usr/lib
332mv -v /usr/lib/*gdb.py /usr/share/gdb/auto-load/usr/lib</userinput></screen>
333
334 </sect2>
335
336 <sect2 id="contents-gcc" role="content">
337 <title>Contents of GCC</title>
338
339 <segmentedlist>
340 <segtitle>Installed programs</segtitle>
341 <segtitle>Installed libraries</segtitle>
342 <segtitle>Installed directories</segtitle>
343
344 <seglistitem>
345 <seg>c++, cc (link to gcc), cpp, g++, gcc,
346 gcc-ar, gcc-nm, gcc-ranlib, gcov, gcov-dump, gcov-tool,
347 and lto-dump</seg>
348
349 <seg>libasan.{a,so}, libatomic.{a,so}, libcc1.so, libgcc.a, libgcc_eh.a,
350 libgcc_s.so, libgcov.a, libgomp.{a,so}, libitm.{a,so},
351 liblsan.{a,so}, liblto_plugin.so,
352 libquadmath.{a,so}, libssp.{a,so}, libssp_nonshared.a,
353 libstdc++.{a,so}, libstdc++fs.a, libsupc++.a, libtsan.{a,so},
354 and libubsan.{a,so}</seg>
355
356 <seg>/usr/include/c++, /usr/lib/gcc, /usr/libexec/gcc, and
357 /usr/share/gcc-&gcc-version;</seg>
358 </seglistitem>
359 </segmentedlist>
360
361 <variablelist>
362 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
363 <?dbfo list-presentation="list"?>
364 <?dbhtml list-presentation="table"?>
365
366 <varlistentry id="c">
367 <term><command>c++</command></term>
368 <listitem>
369 <para>The C++ compiler</para>
370 <indexterm zone="ch-system-gcc c">
371 <primary sortas="b-c++">c++</primary>
372 </indexterm>
373 </listitem>
374 </varlistentry>
375
376 <varlistentry id="cc">
377 <term><command>cc</command></term>
378 <listitem>
379 <para>The C compiler</para>
380 <indexterm zone="ch-system-gcc cc">
381 <primary sortas="b-cc">cc</primary>
382 </indexterm>
383 </listitem>
384 </varlistentry>
385
386 <varlistentry id="cpp">
387 <term><command>cpp</command></term>
388 <listitem>
389 <para>The C preprocessor; it is used by the compiler to expand the
390 #include, #define, and similar statements in the source files</para>
391 <indexterm zone="ch-system-gcc cpp">
392 <primary sortas="b-cpp">cpp</primary>
393 </indexterm>
394 </listitem>
395 </varlistentry>
396
397 <varlistentry id="g">
398 <term><command>g++</command></term>
399 <listitem>
400 <para>The C++ compiler</para>
401 <indexterm zone="ch-system-gcc g">
402 <primary sortas="b-g++">g++</primary>
403 </indexterm>
404 </listitem>
405 </varlistentry>
406
407 <varlistentry id="gcc">
408 <term><command>gcc</command></term>
409 <listitem>
410 <para>The C compiler</para>
411 <indexterm zone="ch-system-gcc gcc">
412 <primary sortas="b-gcc">gcc</primary>
413 </indexterm>
414 </listitem>
415 </varlistentry>
416
417 <varlistentry id="gcc-ar">
418 <term><command>gcc-ar</command></term>
419 <listitem>
420 <para>A wrapper around <command>ar</command> that adds a
421 plugin to the command line. This program is only used
422 to add "link time optimization" and is not useful with the
423 default build options</para>
424 <indexterm zone="ch-system-gcc gcc-ar">
425 <primary sortas="b-gcc-ar">gc-ar</primary>
426 </indexterm>
427 </listitem>
428 </varlistentry>
429
430 <varlistentry id="gcc-nm">
431 <term><command>gcc-nm</command></term>
432 <listitem>
433 <para>A wrapper around <command>nm</command> that adds a
434 plugin to the command line. This program is only used
435 to add "link time optimization" and is not useful with the
436 default build options</para>
437 <indexterm zone="ch-system-gcc gcc-nm">
438 <primary sortas="b-gcc-nm">gc-nm</primary>
439 </indexterm>
440 </listitem>
441 </varlistentry>
442
443 <varlistentry id="gcc-ranlib">
444 <term><command>gcc-ranlib</command></term>
445 <listitem>
446 <para>A wrapper around <command>ranlib</command> that adds a
447 plugin to the command line. This program is only used
448 to add "link time optimization" and is not useful with the
449 default build options</para>
450 <indexterm zone="ch-system-gcc gcc-ranlib">
451 <primary sortas="b-gcc-ranlib">gc-ranlib</primary>
452 </indexterm>
453 </listitem>
454 </varlistentry>
455
456 <varlistentry id="gcov">
457 <term><command>gcov</command></term>
458 <listitem>
459 <para>A coverage testing tool; it is used to analyze programs to
460 determine where optimizations will have the most effect</para>
461 <indexterm zone="ch-system-gcc gcov">
462 <primary sortas="b-gcov">gcov</primary>
463 </indexterm>
464 </listitem>
465 </varlistentry>
466
467 <varlistentry id="gcov-dump">
468 <term><command>gcov-dump</command></term>
469 <listitem>
470 <para>Offline gcda and gcno profile dump tool</para>
471 <indexterm zone="ch-system-gcc gcov-dump">
472 <primary sortas="b-gcov-dump">gcov-dump</primary>
473 </indexterm>
474 </listitem>
475 </varlistentry>
476
477 <varlistentry id="gcov-tool">
478 <term><command>gcov-tool</command></term>
479 <listitem>
480 <para>Offline gcda profile processing tool</para>
481 <indexterm zone="ch-system-gcc gcov-tool">
482 <primary sortas="b-gcov-tool">gcov-tool</primary>
483 </indexterm>
484 </listitem>
485 </varlistentry>
486
487 <varlistentry id="lto-dump">
488 <term><command>lto-dump</command></term>
489 <listitem>
490 <para>Tool for dumping object files produced by GCC with LTO
491 enabled</para>
492 <indexterm zone="ch-system-gcc lto-dump">
493 <primary sortas="b-lto-dump">lto-dump</primary>
494 </indexterm>
495 </listitem>
496 </varlistentry>
497
498 <varlistentry id="libasan">
499 <term><filename class="libraryfile">libasan</filename></term>
500 <listitem>
501 <para>The Address Sanitizer runtime library</para>
502 <indexterm zone="ch-system-gcc libasan">
503 <primary sortas="b-libasan">libasan</primary>
504 </indexterm>
505 </listitem>
506 </varlistentry>
507
508 <varlistentry id="libatomic">
509 <term><filename class="libraryfile">libatomic</filename></term>
510 <listitem>
511 <para>GCC atomic built-in runtime library</para>
512 <indexterm zone="ch-system-gcc libatomic">
513 <primary sortas="b-libatomic">libatomic</primary>
514 </indexterm>
515 </listitem>
516 </varlistentry>
517
518 <varlistentry id="libcc1">
519 <term><filename class="libraryfile">libcc1</filename></term>
520 <listitem>
521 <para>The C preprocessing library</para>
522 <indexterm zone="ch-system-gcc libcc1">
523 <primary sortas="b-libcc1">libcc1</primary>
524 </indexterm>
525 </listitem>
526 </varlistentry>
527
528 <varlistentry id="libgcc">
529 <term><filename class="libraryfile">libgcc</filename></term>
530 <listitem>
531 <para>Contains run-time support for <command>gcc</command></para>
532 <indexterm zone="ch-system-gcc libgcc">
533 <primary sortas="c-libgcc">libgcc</primary>
534 </indexterm>
535 </listitem>
536 </varlistentry>
537
538 <varlistentry id="libgcov">
539 <term><filename class="libraryfile">libgcov</filename></term>
540 <listitem>
541 <para>This library is linked in to a program when GCC is instructed
542 to enable profiling</para>
543 <indexterm zone="ch-system-gcc libgcov">
544 <primary sortas="c-libgcov">libgcov</primary>
545 </indexterm>
546 </listitem>
547 </varlistentry>
548
549 <varlistentry id="libgomp">
550 <term><filename class="libraryfile">libgomp</filename></term>
551 <listitem>
552 <para>GNU implementation of the OpenMP API for multi-platform
553 shared-memory parallel programming in C/C++ and Fortran</para>
554 <indexterm zone="ch-system-gcc libgomp">
555 <primary sortas="c-libgomp">libgomp</primary>
556 </indexterm>
557 </listitem>
558 </varlistentry>
559
560 <varlistentry id="libitm">
561 <term><filename class="libraryfile">libitm</filename></term>
562 <listitem>
563 <para>The GNU transactional memory library</para>
564 <indexterm zone="ch-system-gcc libitm">
565 <primary sortas="c-libitm">libitm</primary>
566 </indexterm>
567 </listitem>
568 </varlistentry>
569
570 <varlistentry id="liblsan">
571 <term><filename class="libraryfile">liblsan</filename></term>
572 <listitem>
573 <para>The Leak Sanitizer runtime library</para>
574 <indexterm zone="ch-system-gcc liblsan">
575 <primary sortas="c-liblsan">liblsan</primary>
576 </indexterm>
577 </listitem>
578 </varlistentry>
579
580 <varlistentry id="liblto_plugin">
581 <term><filename class="libraryfile">liblto_plugin</filename></term>
582 <listitem>
583 <para>GCC's LTO plugin allows binutils to process object files
584 produced by GCC with LTO enabled</para>
585 <indexterm zone="ch-system-gcc liblto_plugin">
586 <primary sortas="c-liblto_plugin">liblto_plugin</primary>
587 </indexterm>
588 </listitem>
589 </varlistentry>
590
591 <varlistentry id="libquadmath">
592 <term><filename class="libraryfile">libquadmath</filename></term>
593 <listitem>
594 <para>GCC Quad Precision Math Library API</para>
595 <indexterm zone="ch-system-gcc libquadmath">
596 <primary sortas="c-libquadmath">libquadmath</primary>
597 </indexterm>
598 </listitem>
599 </varlistentry>
600
601 <varlistentry id="libssp">
602 <term><filename class="libraryfile">libssp</filename></term>
603 <listitem>
604 <para>Contains routines supporting GCC's stack-smashing protection
605 functionality</para>
606 <indexterm zone="ch-system-gcc libssp">
607 <primary sortas="c-libssp">libssp</primary>
608 </indexterm>
609 </listitem>
610 </varlistentry>
611
612 <varlistentry id="libstdc">
613 <term><filename class="libraryfile">libstdc++</filename></term>
614 <listitem>
615 <para>The standard C++ library</para>
616 <indexterm zone="ch-system-gcc libstdc">
617 <primary sortas="c-libstdc++">libstdc++</primary>
618 </indexterm>
619 </listitem>
620 </varlistentry>
621
622 <varlistentry id="libstdcfs">
623 <term><filename class="libraryfile">libstdc++fs</filename></term>
624 <listitem>
625 <para>ISO/IEC TS 18822:2015 Filesystem library</para>
626 <indexterm zone="ch-system-gcc libstdcfs">
627 <primary sortas="c-libstdc++fs">libstdc++fs</primary>
628 </indexterm>
629 </listitem>
630 </varlistentry>
631
632 <varlistentry id="libsupc">
633 <term><filename class="libraryfile">libsupc++</filename></term>
634 <listitem>
635 <para>Provides supporting routines for the C++ programming
636 language</para>
637 <indexterm zone="ch-system-gcc libsupc">
638 <primary sortas="c-libsupc++">libsupc++</primary>
639 </indexterm>
640 </listitem>
641 </varlistentry>
642
643 <varlistentry id="libtsan">
644 <term><filename class="libraryfile">libtsan</filename></term>
645 <listitem>
646 <para>The Thread Sanitizer runtime library</para>
647 <indexterm zone="ch-system-gcc libtsan">
648 <primary sortas="c-libtsan">libtsan</primary>
649 </indexterm>
650 </listitem>
651 </varlistentry>
652
653 <varlistentry id="libubsan">
654 <term><filename class="libraryfile">libubsan</filename></term>
655 <listitem>
656 <para>The Undefined Behavior Sanitizer runtime library</para>
657 <indexterm zone="ch-system-gcc libubsan">
658 <primary sortas="c-libubsan">libubsan</primary>
659 </indexterm>
660 </listitem>
661 </varlistentry>
662
663 </variablelist>
664
665 </sect2>
666
667</sect1>
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