https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100140
Bug ID: 100140 Summary: Reference gcc development github mirror - Latest Development Build Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: j130496 at live dot co.uk Target Milestone: --- Dear sir Posting as under: Used ../configure --enable-multilib and then make -s from build directory created inside source downloaded from https://github.com/gcc-mirror/gcc/commit/d64720a07f611c55e8c815c775a852d650a2e738 (link of latest GCC administrator bump on GCC development github mirror) I am reproducing the comment posted there which gives entire details required for bug tracking and resolving. Unfortunately, no developers are responding to my messages on Github development builds since last 2 days hence posting here: Posted as under on Github: Dear sir As conveyed earlier - even after latest daily bump, the following error while using ../configure --enable-multilib followed by make -s persists. Request you and entire community of developers to look into - I am not a developer myself otherwise I could look into this and resolve myself and would have posted pull request to be merged instead of requesting again and again. Facing this make -s error since last 3 days. As I have personal interest in testing new development of GCC 11 version (although not a developer and also not knowing much about C and C++) - I am daily testing after changes. Error copied from terminal screen is as under: 113 | "~" | | ^~~~~~~~ gengtype-lex.c:365:15: warning: this statement may fall through [-Wimplicit-fallthrough=] 365 | #define YY_DO_BEFORE_ACTION | ~~~~~~~~~~~~~^~~~~~~ ../../gcc/gengtype-lex.l:138:1: note: in expansion of macro ‘YY_DO_BEFORE_ACTION’ 138 | ; | ^ ~ ../../gcc/gengtype-lex.l:134:1: note: here 134 | "ENUM_BITFIELD"{WS}?"("{WS}?{ID}{WS}?")" { | ^~~~ /usr/local/x86_64-pc-linux-gnu/bin/ld: /home/admin/Downloads/gcc_18042021_1708hrs_IST/build/prev-x86_64-pc-linux-gnu/libstdc++-v3/src/.libs/libstdc++.a(guard.o): in function __gnu_cxx::__is_single_threaded()': /home/admin/Downloads/gcc_18042021_1708hrs_IST/build/x86_64-pc-linux-gnu/libstdc++-v3/include/ext/atomicity.h:52: undefined reference to __libc_single_threaded' /usr/local/x86_64-pc-linux-gnu/bin/ld: /home/admin/Downloads/gcc_18042021_1708hrs_IST/build/x86_64-pc-linux-gnu/libstdc++-v3/include/ext/atomicity.h:52: undefined reference to __libc_single_threaded' /usr/local/x86_64-pc-linux-gnu/bin/ld: /home/admin/Downloads/gcc_18042021_1708hrs_IST/build/x86_64-pc-linux-gnu/libstdc++-v3/include/ext/atomicity.h:52: undefined reference to __libc_single_threaded' collect2: error: ld returned 1 exit status make[3]: *** [Makefile:3008: build/genpreds] Error 1 make[2]: *** [Makefile:4822: all-stage2-gcc] Error 2 make[1]: *** [Makefile:25993: stage2-bubble] Error 2 make: *** [Makefile:1001: all] Error 2 My OS details: OS - AlmaLinux 8.3 x86_64 - kernel - 5.11.11-1.el8.elrepo.x86_64 Current stable GCC version details from terminal screen: [root@admin build]# gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/x86_64-pc-linux-gnu/10.3.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: ../configure --enable-multilib Thread model: posix Supported LTO compression algorithms: zlib gcc version 10.3.0 (GCC) Once again requesting all to look into. Thank you in advance. Regards,