Public bug reported: This issue began upstream recently before Ubuntu 18.04 was released, when 7.3.0-16 was introduced and fixed the following issue:
* Use triplet-prefixed as and ld (Helmut Grohne). Addresses: #895251. As can be seen in the continuous integration for afl (https://ci.debian.net/packages/a/afl/unstable/amd64/), the build failed tests from 2018-04-12 until 2018-05-08 (when version 7.3.0-18 arrived). A bug report for the issue was raised (https://bugs.debian.org/cgi- bin/bugreport.cgi?bug=896057) and has been closed with the release of 7.3.0-18. The symptom looks as follows by building afl from source (from http://lcamtuf.coredump.cx/afl/): bob@BOB2:~/afl-2.52b$ make [*] Checking for the ability to compile x86 code... [+] Everything seems to be working, ready to compile. cc -O3 -funroll-loops -Wall -D_FORTIFY_SOURCE=2 -g -Wno-pointer-sign -DAFL_PATH=\"/usr/local/lib/afl\" -DDOC_PATH=\"/usr/local/share/doc/afl\" -DBIN_PATH=\"/usr/local/bin\" afl-gcc.c -o afl-gcc -ldl set -e; for i in afl-g++ afl-clang afl-clang++; do ln -sf afl-gcc $i; done cc -O3 -funroll-loops -Wall -D_FORTIFY_SOURCE=2 -g -Wno-pointer-sign -DAFL_PATH=\"/usr/local/lib/afl\" -DDOC_PATH=\"/usr/local/share/doc/afl\" -DBIN_PATH=\"/usr/local/bin\" afl-fuzz.c -o afl-fuzz -ldl cc -O3 -funroll-loops -Wall -D_FORTIFY_SOURCE=2 -g -Wno-pointer-sign -DAFL_PATH=\"/usr/local/lib/afl\" -DDOC_PATH=\"/usr/local/share/doc/afl\" -DBIN_PATH=\"/usr/local/bin\" afl-showmap.c -o afl-showmap -ldl cc -O3 -funroll-loops -Wall -D_FORTIFY_SOURCE=2 -g -Wno-pointer-sign -DAFL_PATH=\"/usr/local/lib/afl\" -DDOC_PATH=\"/usr/local/share/doc/afl\" -DBIN_PATH=\"/usr/local/bin\" afl-tmin.c -o afl-tmin -ldl cc -O3 -funroll-loops -Wall -D_FORTIFY_SOURCE=2 -g -Wno-pointer-sign -DAFL_PATH=\"/usr/local/lib/afl\" -DDOC_PATH=\"/usr/local/share/doc/afl\" -DBIN_PATH=\"/usr/local/bin\" afl-gotcpu.c -o afl-gotcpu -ldl cc -O3 -funroll-loops -Wall -D_FORTIFY_SOURCE=2 -g -Wno-pointer-sign -DAFL_PATH=\"/usr/local/lib/afl\" -DDOC_PATH=\"/usr/local/share/doc/afl\" -DBIN_PATH=\"/usr/local/bin\" afl-analyze.c -o afl-analyze -ldl cc -O3 -funroll-loops -Wall -D_FORTIFY_SOURCE=2 -g -Wno-pointer-sign -DAFL_PATH=\"/usr/local/lib/afl\" -DDOC_PATH=\"/usr/local/share/doc/afl\" -DBIN_PATH=\"/usr/local/bin\" afl-as.c -o afl-as -ldl ln -sf afl-as as [*] Testing the CC wrapper and instrumentation output... unset AFL_USE_ASAN AFL_USE_MSAN; AFL_QUIET=1 AFL_INST_RATIO=100 AFL_PATH=. ./afl-gcc -O3 -funroll-loops -Wall -D_FORTIFY_SOURCE=2 -g -Wno-pointer-sign -DAFL_PATH=\"/usr/local/lib/afl\" -DDOC_PATH=\"/usr/local/share/doc/afl\" -DBIN_PATH=\"/usr/local/bin\" test-instr.c -o test-instr -ldl echo 0 | ./afl-showmap -m none -q -o .test-instr0 ./test-instr echo 1 | ./afl-showmap -m none -q -o .test-instr1 ./test-instr Oops, the instrumentation does not seem to be behaving correctly! Please ping <lcam...@google.com> to troubleshoot the issue. Makefile:90: recipe for target 'test_build' failed make: *** [test_build] Error 1 bob@BOB2:~/afl-2.52b$ I've tested Debian before and after and can confirm that 7.3.0-18 resolves the problem. It would be very desirable to have this fixed in Ubuntu 18.04 as it's supported for 5 years, and afl is a popular tool that benefits from being rebuilt from source periodically. Anything I'm doing wrong here in reporting this issue, please don't hesitate to berate. I'm keen for this to get resolved and I'm willing to do some work helping to fix. If that involves proposing a patch, that's fine but I might need some guidance about how to make the proposal. Thanks. ** Affects: gcc-7 (Ubuntu) Importance: Undecided Status: New ** Tags: afl afl-gcc as gcc-7 ld triplet-prefixed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1770342 Title: afl no longer builds from source with gcc-7; doesn't look for "as" in dir specified by -B To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gcc-7/+bug/1770342/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
