source: chapter08/gcc.xml@ f2875c3

11.2 11.2-rc1 11.3 11.3-rc1 12.0 12.0-rc1 12.1 12.1-rc1 bdubbs/gcc13 multilib renodr/libudev-from-systemd s6-init trunk xry111/arm64 xry111/arm64-12.0 xry111/clfs-ng xry111/loongarch xry111/loongarch-12.0 xry111/loongarch-12.1 xry111/mips64el xry111/pip3 xry111/rust-wip-20221008 xry111/update-glibc
Last change on this file since f2875c3 was bd08757, checked in by Xi Ruoyao <xry111@…>, 2 years ago

gcc-12: remove unnecessary workaround for PR91085

Reference: ​https://gcc.gnu.org/r12-1924
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File size: 22.9 KB
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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><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>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 <para>In libstdc++, one numpunct test and six tests related to get_time are
139 known to fail. These are all because the locale definitions in glibc have
140 changed but libstdc++ does not currently support those changes.</para>
141
142 <para>A few unexpected failures cannot always be avoided. The GCC developers
143 are usually aware of these issues, but have not resolved them yet.
144 Unless the test results are vastly different from those at the above URL,
145 it is safe to continue.</para>
146
147 <!--note><para>
148 On some combinations of kernel configuration and AMD processors
149 there may be more than 1100 failures in the gcc.target/i386/mpx
150 tests (which are designed to test the MPX option on recent
151 Intel processors). These can safely be ignored on AMD
152 processors. These tests will also fail on Intel processors if MPX support
153 is not enabled in the kernel even though it is present on the CPU.
154 </para></note-->
155
156 <para>Install the package:</para>
157
158<screen><userinput remap="install">make install</userinput></screen>
159
160 <para>The GCC build directory is owned by <systemitem class="username">
161 tester</systemitem> now and the ownership of the installed header
162 directory (and its content) will be incorrect. Change the ownership to
163 <systemitem class="username">root</systemitem> user and group:</para>
164
165<screen><userinput remap="install">chown -v -R root:root \
166 /usr/lib/gcc/$(gcc -dumpmachine)/&gcc-version;/include{,-fixed}</userinput></screen>
167
168 <para>Create a symlink required by the <ulink
169 url="https://refspecs.linuxfoundation.org/FHS_3.0/fhs/ch03s09.html">FHS</ulink>
170 for "historical" reasons.</para>
171
172<screen><userinput remap="install">ln -svr /usr/bin/cpp /usr/lib</userinput></screen>
173 <!-- already done earlier
174 <para>Many packages use the name <command>cc</command> to call the C
175 compiler. To satisfy those packages, create a symlink:</para>
176
177<screen><userinput remap="install">ln -sv gcc /usr/bin/cc</userinput></screen>
178 -->
179 <para>Add a compatibility symlink to enable building programs with
180 Link Time Optimization (LTO):</para>
181
182<screen><userinput remap="install">ln -sfv ../../libexec/gcc/$(gcc -dumpmachine)/&gcc-version;/liblto_plugin.so \
183 /usr/lib/bfd-plugins/</userinput></screen>
184
185 <para>Now that our final toolchain is in place, it is important to again ensure
186 that compiling and linking will work as expected. We do this by performing
187 some sanity checks:</para>
188
189<screen><userinput>echo 'int main(){}' &gt; dummy.c
190cc dummy.c -v -Wl,--verbose &amp;&gt; dummy.log
191readelf -l a.out | grep ': /lib'</userinput></screen>
192
193 <para>There should be no errors,
194 and the output of the last command will be (allowing for
195 platform-specific differences in the dynamic linker name):</para>
196
197<screen><computeroutput>[Requesting program interpreter: /lib64/ld-linux-x86-64.so.2]</computeroutput></screen>
198
199 <para>Now make sure that we're setup to use the correct start files:</para>
200
201<screen><userinput>grep -o '/usr/lib.*/crt[1in].*succeeded' dummy.log</userinput></screen>
202
203 <para>The output of the last command should be:</para>
204
205<screen><computeroutput>/usr/lib/gcc/x86_64-pc-linux-gnu/&gcc-version;/../../../../lib/crt1.o succeeded
206/usr/lib/gcc/x86_64-pc-linux-gnu/&gcc-version;/../../../../lib/crti.o succeeded
207/usr/lib/gcc/x86_64-pc-linux-gnu/&gcc-version;/../../../../lib/crtn.o succeeded</computeroutput></screen>
208
209 <para>Depending on your machine architecture, the above may differ slightly.
210 The difference will be the name of the directory
211 after <filename class="directory">/usr/lib/gcc</filename>. The important
212 thing to look for here is that <command>gcc</command> has found all three
213 <filename>crt*.o</filename> files under the
214 <filename class="directory">/usr/lib</filename> directory.</para>
215
216 <para>Verify that the compiler is searching for the correct header
217 files:</para>
218
219<screen><userinput>grep -B4 '^ /usr/include' dummy.log</userinput></screen>
220
221 <para>This command should return the following output:</para>
222
223<screen><computeroutput>#include &lt;...&gt; search starts here:
224 /usr/lib/gcc/x86_64-pc-linux-gnu/&gcc-version;/include
225 /usr/local/include
226 /usr/lib/gcc/x86_64-pc-linux-gnu/&gcc-version;/include-fixed
227 /usr/include</computeroutput></screen>
228
229 <para>Again, the directory named after your target triplet may be
230 different than the above, depending on your system architecture.</para>
231
232 <para>Next, verify that the new linker is being used with the correct search paths:</para>
233
234<screen><userinput>grep 'SEARCH.*/usr/lib' dummy.log |sed 's|; |\n|g'</userinput></screen>
235
236 <para>References to paths that have components with '-linux-gnu' should
237 be ignored, but otherwise the output of the last command should be:</para>
238
239<screen><computeroutput>SEARCH_DIR("/usr/x86_64-pc-linux-gnu/lib64")
240SEARCH_DIR("/usr/local/lib64")
241SEARCH_DIR("/lib64")
242SEARCH_DIR("/usr/lib64")
243SEARCH_DIR("/usr/x86_64-pc-linux-gnu/lib")
244SEARCH_DIR("/usr/local/lib")
245SEARCH_DIR("/lib")
246SEARCH_DIR("/usr/lib");</computeroutput></screen>
247
248 <para>A 32-bit system may see a few different directories. For example, here
249 is the output from an i686 machine:</para>
250
251<screen><computeroutput>SEARCH_DIR("/usr/i686-pc-linux-gnu/lib32")
252SEARCH_DIR("/usr/local/lib32")
253SEARCH_DIR("/lib32")
254SEARCH_DIR("/usr/lib32")
255SEARCH_DIR("/usr/i686-pc-linux-gnu/lib")
256SEARCH_DIR("/usr/local/lib")
257SEARCH_DIR("/lib")
258SEARCH_DIR("/usr/lib");</computeroutput></screen>
259
260 <para>Next make sure that we're using the correct libc:</para>
261
262<screen><userinput>grep "/lib.*/libc.so.6 " dummy.log</userinput></screen>
263
264 <para>The output of the last command should be:</para>
265
266<screen><computeroutput>attempt to open /usr/lib/libc.so.6 succeeded</computeroutput></screen>
267
268 <para>Make sure GCC is using the correct dynamic linker:</para>
269
270<screen><userinput>grep found dummy.log</userinput></screen>
271
272 <para>The output of the last command should be (allowing for
273 platform-specific differences in dynamic linker name):</para>
274
275<screen><computeroutput>found ld-linux-x86-64.so.2 at /usr/lib/ld-linux-x86-64.so.2</computeroutput></screen>
276
277 <para>If the output does not appear as shown above or is not received
278 at all, then something is seriously wrong. Investigate and retrace the
279 steps to find out where the problem is and correct it. <!--The most likely
280 reason is that something went wrong with the specs file adjustment.--> Any
281 issues will need to be resolved before continuing with the process.</para>
282
283 <para>Once everything is working correctly, clean up the test files:</para>
284
285<screen><userinput>rm -v dummy.c a.out dummy.log</userinput></screen>
286
287 <para>Finally, move a misplaced file:</para>
288
289<screen><userinput remap="install">mkdir -pv /usr/share/gdb/auto-load/usr/lib
290mv -v /usr/lib/*gdb.py /usr/share/gdb/auto-load/usr/lib</userinput></screen>
291
292 </sect2>
293
294 <sect2 id="contents-gcc" role="content">
295 <title>Contents of GCC</title>
296
297 <segmentedlist>
298 <segtitle>Installed programs</segtitle>
299 <segtitle>Installed libraries</segtitle>
300 <segtitle>Installed directories</segtitle>
301
302 <seglistitem>
303 <seg>c++, cc (link to gcc), cpp, g++, gcc,
304 gcc-ar, gcc-nm, gcc-ranlib, gcov, gcov-dump, gcov-tool,
305 and lto-dump</seg>
306
307 <seg>libasan.{a,so}, libatomic.{a,so}, libcc1.so, libgcc.a, libgcc_eh.a,
308 libgcc_s.so, libgcov.a, libgomp.{a,so}, libitm.{a,so},
309 liblsan.{a,so}, liblto_plugin.so,
310 libquadmath.{a,so}, libssp.{a,so}, libssp_nonshared.a,
311 libstdc++.{a,so}, libstdc++fs.a, libsupc++.a, libtsan.{a,so},
312 and libubsan.{a,so}</seg>
313
314 <seg>/usr/include/c++, /usr/lib/gcc, /usr/libexec/gcc, and
315 /usr/share/gcc-&gcc-version;</seg>
316 </seglistitem>
317 </segmentedlist>
318
319 <variablelist>
320 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
321 <?dbfo list-presentation="list"?>
322 <?dbhtml list-presentation="table"?>
323
324 <varlistentry id="c">
325 <term><command>c++</command></term>
326 <listitem>
327 <para>The C++ compiler</para>
328 <indexterm zone="ch-system-gcc c">
329 <primary sortas="b-c++">c++</primary>
330 </indexterm>
331 </listitem>
332 </varlistentry>
333
334 <varlistentry id="cc">
335 <term><command>cc</command></term>
336 <listitem>
337 <para>The C compiler</para>
338 <indexterm zone="ch-system-gcc cc">
339 <primary sortas="b-cc">cc</primary>
340 </indexterm>
341 </listitem>
342 </varlistentry>
343
344 <varlistentry id="cpp">
345 <term><command>cpp</command></term>
346 <listitem>
347 <para>The C preprocessor; it is used by the compiler to expand the
348 #include, #define, and similar statements in the source files</para>
349 <indexterm zone="ch-system-gcc cpp">
350 <primary sortas="b-cpp">cpp</primary>
351 </indexterm>
352 </listitem>
353 </varlistentry>
354
355 <varlistentry id="g">
356 <term><command>g++</command></term>
357 <listitem>
358 <para>The C++ compiler</para>
359 <indexterm zone="ch-system-gcc g">
360 <primary sortas="b-g++">g++</primary>
361 </indexterm>
362 </listitem>
363 </varlistentry>
364
365 <varlistentry id="gcc">
366 <term><command>gcc</command></term>
367 <listitem>
368 <para>The C compiler</para>
369 <indexterm zone="ch-system-gcc gcc">
370 <primary sortas="b-gcc">gcc</primary>
371 </indexterm>
372 </listitem>
373 </varlistentry>
374
375 <varlistentry id="gcc-ar">
376 <term><command>gcc-ar</command></term>
377 <listitem>
378 <para>A wrapper around <command>ar</command> that adds a
379 plugin to the command line. This program is only used
380 to add "link time optimization" and is not useful with the
381 default build options</para>
382 <indexterm zone="ch-system-gcc gcc-ar">
383 <primary sortas="b-gcc-ar">gc-ar</primary>
384 </indexterm>
385 </listitem>
386 </varlistentry>
387
388 <varlistentry id="gcc-nm">
389 <term><command>gcc-nm</command></term>
390 <listitem>
391 <para>A wrapper around <command>nm</command> that adds a
392 plugin to the command line. This program is only used
393 to add "link time optimization" and is not useful with the
394 default build options</para>
395 <indexterm zone="ch-system-gcc gcc-nm">
396 <primary sortas="b-gcc-nm">gc-nm</primary>
397 </indexterm>
398 </listitem>
399 </varlistentry>
400
401 <varlistentry id="gcc-ranlib">
402 <term><command>gcc-ranlib</command></term>
403 <listitem>
404 <para>A wrapper around <command>ranlib</command> that adds a
405 plugin to the command line. This program is only used
406 to add "link time optimization" and is not useful with the
407 default build options</para>
408 <indexterm zone="ch-system-gcc gcc-ranlib">
409 <primary sortas="b-gcc-ranlib">gc-ranlib</primary>
410 </indexterm>
411 </listitem>
412 </varlistentry>
413
414 <varlistentry id="gcov">
415 <term><command>gcov</command></term>
416 <listitem>
417 <para>A coverage testing tool; it is used to analyze programs to
418 determine where optimizations will have the most effect</para>
419 <indexterm zone="ch-system-gcc gcov">
420 <primary sortas="b-gcov">gcov</primary>
421 </indexterm>
422 </listitem>
423 </varlistentry>
424
425 <varlistentry id="gcov-dump">
426 <term><command>gcov-dump</command></term>
427 <listitem>
428 <para>Offline gcda and gcno profile dump tool</para>
429 <indexterm zone="ch-system-gcc gcov-dump">
430 <primary sortas="b-gcov-dump">gcov-dump</primary>
431 </indexterm>
432 </listitem>
433 </varlistentry>
434
435 <varlistentry id="gcov-tool">
436 <term><command>gcov-tool</command></term>
437 <listitem>
438 <para>Offline gcda profile processing tool</para>
439 <indexterm zone="ch-system-gcc gcov-tool">
440 <primary sortas="b-gcov-tool">gcov-tool</primary>
441 </indexterm>
442 </listitem>
443 </varlistentry>
444
445 <varlistentry id="lto-dump">
446 <term><command>lto-dump</command></term>
447 <listitem>
448 <para>Tool for dumping object files produced by GCC with LTO
449 enabled</para>
450 <indexterm zone="ch-system-gcc lto-dump">
451 <primary sortas="b-lto-dump">lto-dump</primary>
452 </indexterm>
453 </listitem>
454 </varlistentry>
455
456 <varlistentry id="libasan">
457 <term><filename class="libraryfile">libasan</filename></term>
458 <listitem>
459 <para>The Address Sanitizer runtime library</para>
460 <indexterm zone="ch-system-gcc libasan">
461 <primary sortas="b-libasan">libasan</primary>
462 </indexterm>
463 </listitem>
464 </varlistentry>
465
466 <varlistentry id="libatomic">
467 <term><filename class="libraryfile">libatomic</filename></term>
468 <listitem>
469 <para>GCC atomic built-in runtime library</para>
470 <indexterm zone="ch-system-gcc libatomic">
471 <primary sortas="b-libatomic">libatomic</primary>
472 </indexterm>
473 </listitem>
474 </varlistentry>
475
476 <varlistentry id="libcc1">
477 <term><filename class="libraryfile">libcc1</filename></term>
478 <listitem>
479 <para>The C preprocessing library</para>
480 <indexterm zone="ch-system-gcc libcc1">
481 <primary sortas="b-libcc1">libcc1</primary>
482 </indexterm>
483 </listitem>
484 </varlistentry>
485
486 <varlistentry id="libgcc">
487 <term><filename class="libraryfile">libgcc</filename></term>
488 <listitem>
489 <para>Contains run-time support for <command>gcc</command></para>
490 <indexterm zone="ch-system-gcc libgcc">
491 <primary sortas="c-libgcc">libgcc</primary>
492 </indexterm>
493 </listitem>
494 </varlistentry>
495
496 <varlistentry id="libgcov">
497 <term><filename class="libraryfile">libgcov</filename></term>
498 <listitem>
499 <para>This library is linked in to a program when GCC is instructed
500 to enable profiling</para>
501 <indexterm zone="ch-system-gcc libgcov">
502 <primary sortas="c-libgcov">libgcov</primary>
503 </indexterm>
504 </listitem>
505 </varlistentry>
506
507 <varlistentry id="libgomp">
508 <term><filename class="libraryfile">libgomp</filename></term>
509 <listitem>
510 <para>GNU implementation of the OpenMP API for multi-platform
511 shared-memory parallel programming in C/C++ and Fortran</para>
512 <indexterm zone="ch-system-gcc libgomp">
513 <primary sortas="c-libgomp">libgomp</primary>
514 </indexterm>
515 </listitem>
516 </varlistentry>
517
518 <varlistentry id="libitm">
519 <term><filename class="libraryfile">libitm</filename></term>
520 <listitem>
521 <para>The GNU transactional memory library</para>
522 <indexterm zone="ch-system-gcc libitm">
523 <primary sortas="c-libitm">libitm</primary>
524 </indexterm>
525 </listitem>
526 </varlistentry>
527
528 <varlistentry id="liblsan">
529 <term><filename class="libraryfile">liblsan</filename></term>
530 <listitem>
531 <para>The Leak Sanitizer runtime library</para>
532 <indexterm zone="ch-system-gcc liblsan">
533 <primary sortas="c-liblsan">liblsan</primary>
534 </indexterm>
535 </listitem>
536 </varlistentry>
537
538 <varlistentry id="liblto_plugin">
539 <term><filename class="libraryfile">liblto_plugin</filename></term>
540 <listitem>
541 <para>GCC's LTO plugin allows binutils to process object files
542 produced by GCC with LTO enabled</para>
543 <indexterm zone="ch-system-gcc liblto_plugin">
544 <primary sortas="c-liblto_plugin">liblto_plugin</primary>
545 </indexterm>
546 </listitem>
547 </varlistentry>
548
549 <varlistentry id="libquadmath">
550 <term><filename class="libraryfile">libquadmath</filename></term>
551 <listitem>
552 <para>GCC Quad Precision Math Library API</para>
553 <indexterm zone="ch-system-gcc libquadmath">
554 <primary sortas="c-libquadmath">libquadmath</primary>
555 </indexterm>
556 </listitem>
557 </varlistentry>
558
559 <varlistentry id="libssp">
560 <term><filename class="libraryfile">libssp</filename></term>
561 <listitem>
562 <para>Contains routines supporting GCC's stack-smashing protection
563 functionality</para>
564 <indexterm zone="ch-system-gcc libssp">
565 <primary sortas="c-libssp">libssp</primary>
566 </indexterm>
567 </listitem>
568 </varlistentry>
569
570 <varlistentry id="libstdc">
571 <term><filename class="libraryfile">libstdc++</filename></term>
572 <listitem>
573 <para>The standard C++ library</para>
574 <indexterm zone="ch-system-gcc libstdc">
575 <primary sortas="c-libstdc++">libstdc++</primary>
576 </indexterm>
577 </listitem>
578 </varlistentry>
579
580 <varlistentry id="libstdcfs">
581 <term><filename class="libraryfile">libstdc++fs</filename></term>
582 <listitem>
583 <para>ISO/IEC TS 18822:2015 Filesystem library</para>
584 <indexterm zone="ch-system-gcc libstdcfs">
585 <primary sortas="c-libstdc++fs">libstdc++fs</primary>
586 </indexterm>
587 </listitem>
588 </varlistentry>
589
590 <varlistentry id="libsupc">
591 <term><filename class="libraryfile">libsupc++</filename></term>
592 <listitem>
593 <para>Provides supporting routines for the C++ programming
594 language</para>
595 <indexterm zone="ch-system-gcc libsupc">
596 <primary sortas="c-libsupc++">libsupc++</primary>
597 </indexterm>
598 </listitem>
599 </varlistentry>
600
601 <varlistentry id="libtsan">
602 <term><filename class="libraryfile">libtsan</filename></term>
603 <listitem>
604 <para>The Thread Sanitizer runtime library</para>
605 <indexterm zone="ch-system-gcc libtsan">
606 <primary sortas="c-libtsan">libtsan</primary>
607 </indexterm>
608 </listitem>
609 </varlistentry>
610
611 <varlistentry id="libubsan">
612 <term><filename class="libraryfile">libubsan</filename></term>
613 <listitem>
614 <para>The Undefined Behavior Sanitizer runtime library</para>
615 <indexterm zone="ch-system-gcc libubsan">
616 <primary sortas="c-libubsan">libubsan</primary>
617 </indexterm>
618 </listitem>
619 </varlistentry>
620
621 </variablelist>
622
623 </sect2>
624
625</sect1>
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