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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>If building on x86_64, change the default directory name for 64-bit
45 libraries to <quote>lib</quote>:</para>
46
47<screen><userinput remap="pre">case $(uname -m) in
48 x86_64)
49 sed -e '/m64=/s/lib64/lib/' \
50 -i.orig gcc/config/i386/t-linux64
51 ;;
52esac</userinput></screen>
53
54 <para>The GCC documentation recommends building GCC in a dedicated build directory:</para>
55
56<screen><userinput remap="pre">mkdir -v build
57cd build</userinput></screen>
58
59 <para>Prepare GCC for compilation:</para>
60
61<screen><userinput remap="configure">../configure --prefix=/usr \
62 LD=ld \
63 --enable-languages=c,c++ \
64 --disable-multilib \
65 --disable-bootstrap \
66 --with-system-zlib</userinput></screen>
67
68 <para>Note that for other programming languages there are some prerequisites that
69 are not yet available. See the
70 <ulink url="&blfs-book;general/gcc.html">BLFS Book GCC page</ulink>
71 for instructions on how to build all of GCC's supported languages.</para>
72
73 <variablelist>
74 <title>The meaning of the new configure parameters:</title>
75
76 <varlistentry>
77 <term><parameter>LD=ld</parameter></term>
78 <listitem>
79 <para>This parameter makes the configure script use the ld installed
80 by the binutils built earlier in this chapter, rather than
81 the cross-built version which would otherwise be used.</para>
82 </listitem>
83 </varlistentry>
84
85 <varlistentry>
86 <term><parameter>--with-system-zlib</parameter></term>
87 <listitem>
88 <para>This switch tells GCC to link to the system installed copy of
89 the zlib library, rather than its own internal copy.</para>
90 </listitem>
91 </varlistentry>
92 </variablelist>
93
94 <para>Compile the package:</para>
95
96<screen><userinput remap="make">make</userinput></screen>
97
98 <important>
99 <para>In this section, the test suite for GCC is considered
100 critical. Do not skip it under any circumstance.</para>
101 </important>
102
103 <para>One set of tests in the GCC test suite is known to exhaust the default
104 stack, so increase the stack size prior to running the tests:</para>
105
106<screen><userinput remap="test">ulimit -s 32768</userinput></screen>
107
108 <para>Test the results as a non-privileged user, but do not stop at errors:</para>
109
110<screen><userinput remap="test">chown -Rv tester .
111su tester -c "PATH=$PATH make -k check"</userinput></screen>
112
113 <para>To receive a summary of the test suite results, run:</para>
114
115<screen><userinput remap="test">../contrib/test_summary</userinput></screen>
116
117 <para>For only the summaries, pipe the output through
118 <userinput>grep -A7 Summ</userinput>.</para>
119
120 <para>Results can be compared with those located at <ulink
121 url="&test-results;"/> and
122 <ulink url="https://gcc.gnu.org/ml/gcc-testresults/"/>.</para>
123
124 <para>Six tests related to get_time are known to fail. These are
125 apparently related to the en_HK locale.</para>
126
127 <para>Additionally the following tests related to the following files
128 are kown to fail with glibc-2.32: asan_test.C, co-ret-17-void-ret-coro.C,
129 pr95519-05-gro.C, pr80166.c.</para>
130
131<!-- don't fail anymore after the move of iana-etc and /etc/hosts
132 <para>Two tests named lookup.cc and reverse.cc in experimental/net
133 are known to fail in LFS chroot environment because they require
134 /etc/hosts and iana-etc.</para>
135-->
136 <para>A few unexpected failures cannot always be avoided. The GCC developers
137 are usually aware of these issues, but have not resolved them yet.
138 Unless the test results are vastly different from those at the above URL,
139 it is safe to continue.</para>
140
141 <!--note><para>
142 On some combinations of kernel configuration and AMD processors
143 there may be more than 1100 failures in the gcc.target/i386/mpx
144 tests (which are designed to test the MPX option on recent
145 Intel processors). These can safely be ignored on AMD
146 processors. These tests will also fail on Intel processors if MPX support
147 is not enabled in the kernel even though it is present on the CPU.
148 </para></note-->
149
150 <para>Install the package and remove an unneeded directory:</para>
151
152<screen><userinput remap="install">make install
153rm -rf /usr/lib/gcc/$(gcc -dumpmachine)/&gcc-version;/include-fixed/bits/</userinput></screen>
154
155 <para>The GCC build directory is owned by <systemitem class="username">
156 tester</systemitem> now and the ownership of the installed header
157 directory (and its content) will be incorrect. Change the ownership to
158 <systemitem class="username">root</systemitem> user and group:</para>
159
160<screen><userinput remap="install">chown -v -R root:root \
161 /usr/lib/gcc/*linux-gnu/&gcc-version;/include{,-fixed}</userinput></screen>
162
163 <para>Create a symlink required by the <ulink
164 url="https://refspecs.linuxfoundation.org/FHS_3.0/fhs/ch03s09.html">FHS</ulink>
165 for "historical" reasons.</para>
166
167<screen><userinput remap="install">ln -sv ../usr/bin/cpp /lib</userinput></screen>
168 <!-- already done earlier
169 <para>Many packages use the name <command>cc</command> to call the C
170 compiler. To satisfy those packages, create a symlink:</para>
171
172<screen><userinput remap="install">ln -sv gcc /usr/bin/cc</userinput></screen>
173 -->
174 <para>Add a compatibility symlink to enable building programs with
175 Link Time Optimization (LTO):</para>
176
177<screen><userinput remap="install">install -v -dm755 /usr/lib/bfd-plugins
178ln -sfv ../../libexec/gcc/$(gcc -dumpmachine)/&gcc-version;/liblto_plugin.so \
179 /usr/lib/bfd-plugins/</userinput></screen>
180
181 <para>Now that our final toolchain is in place, it is important to again ensure
182 that compiling and linking will work as expected. We do this by performing
183 some sanity checks:</para>
184
185 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
186 href="adjusting.xml"
187 xpointer="xpointer(//*[@os='a'])"/>
188
189 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
190 href="adjusting.xml"
191 xpointer="xpointer(//*[@os='b'])"/>
192
193 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
194 href="adjusting.xml"
195 xpointer="xpointer(//*[@os='c'])"/>
196
197 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
198 href="adjusting.xml"
199 xpointer="xpointer(//*[@os='d'])"/>
200
201 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
202 href="adjusting.xml"
203 xpointer="xpointer(//*[@os='e'])"/>
204
205 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
206 href="adjusting.xml"
207 xpointer="xpointer(//*[@os='f'])"/>
208
209<screen><computeroutput>/usr/lib/gcc/x86_64-pc-linux-gnu/&gcc-version;/../../../../lib/crt1.o succeeded
210/usr/lib/gcc/x86_64-pc-linux-gnu/&gcc-version;/../../../../lib/crti.o succeeded
211/usr/lib/gcc/x86_64-pc-linux-gnu/&gcc-version;/../../../../lib/crtn.o succeeded</computeroutput></screen>
212
213 <para>Depending on your machine architecture, the above may differ slightly.
214 The difference will be the name of the directory
215 after <filename class="directory">/usr/lib/gcc</filename>. The important
216 thing to look for here is that <command>gcc</command> has found all three
217 <filename>crt*.o</filename> files under the
218 <filename class="directory">/usr/lib</filename> directory.</para>
219
220 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
221 href="adjusting.xml"
222 xpointer="xpointer(//*[@os='g'])"/>
223
224<screen><userinput>grep -B4 '^ /usr/include' dummy.log</userinput></screen>
225
226 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
227 href="adjusting.xml"
228 xpointer="xpointer(//*[@os='h'])"/>
229
230<screen><computeroutput>#include &lt;...&gt; search starts here:
231 /usr/lib/gcc/x86_64-pc-linux-gnu/&gcc-version;/include
232 /usr/local/include
233 /usr/lib/gcc/x86_64-pc-linux-gnu/&gcc-version;/include-fixed
234 /usr/include</computeroutput></screen>
235
236 <para>Again, the directory named after your target triplet may be
237 different than the above, depending on your system architecture.</para>
238
239 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
240 href="adjusting.xml"
241 xpointer="xpointer(//*[@os='i'])"/>
242
243 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
244 href="adjusting.xml"
245 xpointer="xpointer(//*[@os='j'])"/>
246
247 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
248 href="adjusting.xml"
249 xpointer="xpointer(//*[@os='k'])"/>
250
251<screen><computeroutput>SEARCH_DIR("/usr/x86_64-pc-linux-gnu/lib64")
252SEARCH_DIR("/usr/local/lib64")
253SEARCH_DIR("/lib64")
254SEARCH_DIR("/usr/lib64")
255SEARCH_DIR("/usr/x86_64-pc-linux-gnu/lib")
256SEARCH_DIR("/usr/local/lib")
257SEARCH_DIR("/lib")
258SEARCH_DIR("/usr/lib");</computeroutput></screen>
259
260 <para>A 32-bit system may see a few different directories. For example, here
261 is the output from an i686 machine:</para>
262
263<screen><computeroutput>SEARCH_DIR("/usr/i686-pc-linux-gnu/lib32")
264SEARCH_DIR("/usr/local/lib32")
265SEARCH_DIR("/lib32")
266SEARCH_DIR("/usr/lib32")
267SEARCH_DIR("/usr/i686-pc-linux-gnu/lib")
268SEARCH_DIR("/usr/local/lib")
269SEARCH_DIR("/lib")
270SEARCH_DIR("/usr/lib");</computeroutput></screen>
271
272 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
273 href="adjusting.xml"
274 xpointer="xpointer(//*[@os='l'])"/>
275
276 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
277 href="adjusting.xml"
278 xpointer="xpointer(//*[@os='m'])"/>
279
280 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
281 href="adjusting.xml"
282 xpointer="xpointer(//*[@os='n'])"/>
283
284 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
285 href="adjusting.xml"
286 xpointer="xpointer(//*[@os='o'])"/>
287
288 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
289 href="adjusting.xml"
290 xpointer="xpointer(//*[@os='p'])"/>
291
292 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
293 href="adjusting.xml"
294 xpointer="xpointer(//*[@os='q'])"/>
295
296 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
297 href="adjusting.xml"
298 xpointer="xpointer(//*[@os='r'])"/>
299
300 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
301 href="adjusting.xml"
302 xpointer="xpointer(//*[@os='s'])"/>
303
304 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
305 href="adjusting.xml"
306 xpointer="xpointer(//*[@os='t'])"/>
307
308 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
309 href="adjusting.xml"
310 xpointer="xpointer(//*[@os='u'])"/>
311
312 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
313 href="adjusting.xml"
314 xpointer="xpointer(//*[@os='v'])"/>
315
316 <para>Finally, move a misplaced file:</para>
317
318<screen><userinput remap="install">mkdir -pv /usr/share/gdb/auto-load/usr/lib
319mv -v /usr/lib/*gdb.py /usr/share/gdb/auto-load/usr/lib</userinput></screen>
320
321 </sect2>
322
323 <sect2 id="contents-gcc" role="content">
324 <title>Contents of GCC</title>
325
326 <segmentedlist>
327 <segtitle>Installed programs</segtitle>
328 <segtitle>Installed libraries</segtitle>
329 <segtitle>Installed directories</segtitle>
330
331 <seglistitem>
332 <seg>c++, cc (link to gcc), cpp, g++, gcc,
333 gcc-ar, gcc-nm, gcc-ranlib, gcov, gcov-dump, and gcov-tool</seg>
334
335 <seg>libasan.{a,so}, libatomic.{a,so}, libcc1.so, libgcc.a, libgcc_eh.a,
336 libgcc_s.so, libgcov.a, libgomp.{a,so}, libitm.{a,so},
337 liblsan.{a,so}, liblto_plugin.so,
338 libquadmath.{a,so}, libssp.{a,so}, libssp_nonshared.a,
339 libstdc++.{a,so}, libstdc++fs.a, libsupc++.a, libtsan.{a,so},
340 and libubsan.{a,so}</seg>
341
342 <seg>/usr/include/c++, /usr/lib/gcc, /usr/libexec/gcc, and
343 /usr/share/gcc-&gcc-version;</seg>
344 </seglistitem>
345 </segmentedlist>
346
347 <variablelist>
348 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
349 <?dbfo list-presentation="list"?>
350 <?dbhtml list-presentation="table"?>
351
352 <varlistentry id="c">
353 <term><command>c++</command></term>
354 <listitem>
355 <para>The C++ compiler</para>
356 <indexterm zone="ch-system-gcc c">
357 <primary sortas="b-c++">c++</primary>
358 </indexterm>
359 </listitem>
360 </varlistentry>
361
362 <varlistentry id="cc">
363 <term><command>cc</command></term>
364 <listitem>
365 <para>The C compiler</para>
366 <indexterm zone="ch-system-gcc cc">
367 <primary sortas="b-cc">cc</primary>
368 </indexterm>
369 </listitem>
370 </varlistentry>
371
372 <varlistentry id="cpp">
373 <term><command>cpp</command></term>
374 <listitem>
375 <para>The C preprocessor; it is used by the compiler to expand the
376 #include, #define, and similar statements in the source files</para>
377 <indexterm zone="ch-system-gcc cpp">
378 <primary sortas="b-cpp">cpp</primary>
379 </indexterm>
380 </listitem>
381 </varlistentry>
382
383 <varlistentry id="g">
384 <term><command>g++</command></term>
385 <listitem>
386 <para>The C++ compiler</para>
387 <indexterm zone="ch-system-gcc g">
388 <primary sortas="b-g++">g++</primary>
389 </indexterm>
390 </listitem>
391 </varlistentry>
392
393 <varlistentry id="gcc">
394 <term><command>gcc</command></term>
395 <listitem>
396 <para>The C compiler</para>
397 <indexterm zone="ch-system-gcc gcc">
398 <primary sortas="b-gcc">gcc</primary>
399 </indexterm>
400 </listitem>
401 </varlistentry>
402
403 <varlistentry id="gcc-ar">
404 <term><command>gcc-ar</command></term>
405 <listitem>
406 <para>A wrapper around <command>ar</command> that adds a
407 plugin to the command line. This program is only used
408 to add "link time optimization" and is not useful with the
409 default build options</para>
410 <indexterm zone="ch-system-gcc gcc-ar">
411 <primary sortas="b-gcc-ar">gc-ar</primary>
412 </indexterm>
413 </listitem>
414 </varlistentry>
415
416 <varlistentry id="gcc-nm">
417 <term><command>gcc-nm</command></term>
418 <listitem>
419 <para>A wrapper around <command>nm</command> that adds a
420 plugin to the command line. This program is only used
421 to add "link time optimization" and is not useful with the
422 default build options</para>
423 <indexterm zone="ch-system-gcc gcc-nm">
424 <primary sortas="b-gcc-nm">gc-nm</primary>
425 </indexterm>
426 </listitem>
427 </varlistentry>
428
429 <varlistentry id="gcc-ranlib">
430 <term><command>gcc-ranlib</command></term>
431 <listitem>
432 <para>A wrapper around <command>ranlib</command> that adds a
433 plugin to the command line. This program is only used
434 to add "link time optimization" and is not useful with the
435 default build options</para>
436 <indexterm zone="ch-system-gcc gcc-ranlib">
437 <primary sortas="b-gcc-ranlib">gc-ranlib</primary>
438 </indexterm>
439 </listitem>
440 </varlistentry>
441
442 <varlistentry id="gcov">
443 <term><command>gcov</command></term>
444 <listitem>
445 <para>A coverage testing tool; it is used to analyze programs to
446 determine where optimizations will have the most effect</para>
447 <indexterm zone="ch-system-gcc gcov">
448 <primary sortas="b-gcov">gcov</primary>
449 </indexterm>
450 </listitem>
451 </varlistentry>
452
453 <varlistentry id="gcov-dump">
454 <term><command>gcov-dump</command></term>
455 <listitem>
456 <para>Offline gcda and gcno profile dump tool</para>
457 <indexterm zone="ch-system-gcc gcov-dump">
458 <primary sortas="b-gcov-dump">gcov-dump</primary>
459 </indexterm>
460 </listitem>
461 </varlistentry>
462
463 <varlistentry id="gcov-tool">
464 <term><command>gcov-tool</command></term>
465 <listitem>
466 <para>Offline gcda profile processing tool</para>
467 <indexterm zone="ch-system-gcc gcov-tool">
468 <primary sortas="b-gcov-tool">gcov-tool</primary>
469 </indexterm>
470 </listitem>
471 </varlistentry>
472
473 <varlistentry id="libasan">
474 <term><filename class="libraryfile">libasan</filename></term>
475 <listitem>
476 <para>The Address Sanitizer runtime library</para>
477 <indexterm zone="ch-system-gcc libasan">
478 <primary sortas="b-libasan">libasan</primary>
479 </indexterm>
480 </listitem>
481 </varlistentry>
482
483 <varlistentry id="libatomic">
484 <term><filename class="libraryfile">libatomic</filename></term>
485 <listitem>
486 <para>GCC atomic built-in runtime library</para>
487 <indexterm zone="ch-system-gcc libatomic">
488 <primary sortas="b-libatomic">libatomic</primary>
489 </indexterm>
490 </listitem>
491 </varlistentry>
492
493 <varlistentry id="libcc1">
494 <term><filename class="libraryfile">libcc1</filename></term>
495 <listitem>
496 <para>The C preprocessing library</para>
497 <indexterm zone="ch-system-gcc libcc1">
498 <primary sortas="b-libcc1">libcc1</primary>
499 </indexterm>
500 </listitem>
501 </varlistentry>
502
503 <varlistentry id="libgcc">
504 <term><filename class="libraryfile">libgcc</filename></term>
505 <listitem>
506 <para>Contains run-time support for <command>gcc</command></para>
507 <indexterm zone="ch-system-gcc libgcc">
508 <primary sortas="c-libgcc">libgcc</primary>
509 </indexterm>
510 </listitem>
511 </varlistentry>
512
513 <varlistentry id="libgcov">
514 <term><filename class="libraryfile">libgcov</filename></term>
515 <listitem>
516 <para>This library is linked in to a program when GCC is instructed
517 to enable profiling</para>
518 <indexterm zone="ch-system-gcc libgcov">
519 <primary sortas="c-libgcov">libgcov</primary>
520 </indexterm>
521 </listitem>
522 </varlistentry>
523
524 <varlistentry id="libgomp">
525 <term><filename class="libraryfile">libgomp</filename></term>
526 <listitem>
527 <para>GNU implementation of the OpenMP API for multi-platform
528 shared-memory parallel programming in C/C++ and Fortran</para>
529 <indexterm zone="ch-system-gcc libgomp">
530 <primary sortas="c-libgomp">libgomp</primary>
531 </indexterm>
532 </listitem>
533 </varlistentry>
534
535 <varlistentry id="liblsan">
536 <term><filename class="libraryfile">liblsan</filename></term>
537 <listitem>
538 <para>The Leak Sanitizer runtime library</para>
539 <indexterm zone="ch-system-gcc liblsan">
540 <primary sortas="c-liblsan">liblsan</primary>
541 </indexterm>
542 </listitem>
543 </varlistentry>
544
545 <varlistentry id="liblto_plugin">
546 <term><filename class="libraryfile">liblto_plugin</filename></term>
547 <listitem>
548 <para>GCC's Link Time Optimization (LTO) plugin allows GCC to perform
549 optimizations across compilation units</para>
550 <indexterm zone="ch-system-gcc liblto_plugin">
551 <primary sortas="c-liblto_plugin">liblto_plugin</primary>
552 </indexterm>
553 </listitem>
554 </varlistentry>
555
556 <varlistentry id="libquadmath">
557 <term><filename class="libraryfile">libquadmath</filename></term>
558 <listitem>
559 <para>GCC Quad Precision Math Library API</para>
560 <indexterm zone="ch-system-gcc libquadmath">
561 <primary sortas="c-libquadmath">libquadmath</primary>
562 </indexterm>
563 </listitem>
564 </varlistentry>
565
566 <varlistentry id="libssp">
567 <term><filename class="libraryfile">libssp</filename></term>
568 <listitem>
569 <para>Contains routines supporting GCC's stack-smashing protection
570 functionality</para>
571 <indexterm zone="ch-system-gcc libssp">
572 <primary sortas="c-libssp">libssp</primary>
573 </indexterm>
574 </listitem>
575 </varlistentry>
576
577 <varlistentry id="libstdc">
578 <term><filename class="libraryfile">libstdc++</filename></term>
579 <listitem>
580 <para>The standard C++ library</para>
581 <indexterm zone="ch-system-gcc libstdc">
582 <primary sortas="c-libstdc++">libstdc++</primary>
583 </indexterm>
584 </listitem>
585 </varlistentry>
586
587 <varlistentry id="libstdcfs">
588 <term><filename class="libraryfile">libstdc++fs</filename></term>
589 <listitem>
590 <para>ISO/IEC TS 18822:2015 Filesystem library</para>
591 <indexterm zone="ch-system-gcc libstdcfs">
592 <primary sortas="c-libstdc++fs">libstdc++fs</primary>
593 </indexterm>
594 </listitem>
595 </varlistentry>
596
597 <varlistentry id="libsupc">
598 <term><filename class="libraryfile">libsupc++</filename></term>
599 <listitem>
600 <para>Provides supporting routines for the C++ programming
601 language</para>
602 <indexterm zone="ch-system-gcc libsupc">
603 <primary sortas="c-libsupc++">libsupc++</primary>
604 </indexterm>
605 </listitem>
606 </varlistentry>
607
608 <varlistentry id="libtsan">
609 <term><filename class="libraryfile">libtsan</filename></term>
610 <listitem>
611 <para>The Thread Sanitizer runtime library</para>
612 <indexterm zone="ch-system-gcc libtsan">
613 <primary sortas="c-libtsan">libtsan</primary>
614 </indexterm>
615 </listitem>
616 </varlistentry>
617
618 <varlistentry id="libubsan">
619 <term><filename class="libraryfile">libubsan</filename></term>
620 <listitem>
621 <para>The Undefined Behavior Sanitizer runtime library</para>
622 <indexterm zone="ch-system-gcc libubsan">
623 <primary sortas="c-libubsan">libubsan</primary>
624 </indexterm>
625 </listitem>
626 </varlistentry>
627
628 </variablelist>
629
630 </sect2>
631
632</sect1>
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