Bug 745108 – app-admin/fam-2.7.0_p17_p3 fails to compile with compiler-rt

• Status: RESOLVED INVALID
• Product: Gentoo Linux

[Description Agostino Sarubbo 2020-09-28 12:02:53 UTC]

https://blogs.gentoo.org/ago/2020/07/04/gentoo-tinderbox/

Issue: app-admin/fam-2.7.0_p17_p3 fails to compile with compiler-rt.
Discovered on: amd64 (internal ref: tinderbox)

[Comment 1 Agostino Sarubbo 2020-09-28 12:02:56 UTC]

Created attachment 662785 [details]
build.log

build log and emerge --info

[Comment 2 Agostino Sarubbo 2020-09-28 12:02:58 UTC]

Possible context of error(s):

/usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: ClientInterest.o: undefined reference to symbol '_Unwind_Resume@@GCC_3.0'
clang-10: error: linker command failed with exit code 1 (use -v to see invocation)

[Comment 3 Jeroen Roovers (RETIRED) 2020-09-28 12:28:49 UTC]

/usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: Listener.o: in function `Listener::create_local_client(TCP_Client&, unsigned int)':
Listener.c++:(.text+0x5e9): warning: the use of `tempnam' is dangerous, better use `mkstemp'
/usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: ClientInterest.o: undefined reference to symbol '_Unwind_Resume@@GCC_3.0'
/usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: /usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/libgcc_s.so.1: error adding symbols: DSO missing from command line
clang-10: error: linker command failed with exit code 1 (use -v to see invocation)

So the compiler (clang) is using clang/llvm internals but the linker (GNUld) is using GCC internals.

[Comment 4 David Seifert 2020-10-29 22:12:33 UTC]

False positive.