#8921: ghc-stage2 fails with ld: fatal: library -lrt: not found on topHandler02(dyn) test -------------------------------------+------------------------------------- Reporter: AlainODea | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.8.1-rc2 Keywords: | Operating System: Solaris Architecture: x86_64 (amd64) | Type of failure: Compile-time Difficulty: Easy (less than 1 | crash hour) | Test Case: Blocked By: | Blocking: Related Tickets: | -------------------------------------+------------------------------------- On SmartOS ghc-stage2 crashes with an error when trying to run the topHandler02(dyn) test: ld: fatal: library -lrt: not found Tracing this with the following DTrace script to stop ghc-stage2 at the point of launching ld: '''~/exit_on_ld.d''': {{{ #!/usr/sbin/dtrace -s #pragma D option destructive syscall::exec*:entry /copyinstr(arg0) == "/usr/bin/ld"/ { trace(pid); stop(); system("pargs %d", pid); exit(0); } }}} This let me observe the command-line arguments to ld: In ssh session A I started DTrace: {{{ chmod +x ~/exit_on_ld.d ~/exit_on_ld.d }}} In a ssh session B I started the topHandler02(dyn) test manually with no output redirection: {{{ cd ~/ghc/libraries/base/tests && '/root/ghc/inplace/bin/ghc-stage2' -fforce-recomp -dcore-lint -dcmm-lint -dno-debug-output -no-user-package- db -rtsopts -fno-ghci-history -o topHandler02 topHandler02.hs -O -prof -static -auto-all -threaded }}} In ssh session A I observed the ld call (ghc-stage2 is now frozen by stop): {{{ CPU ID FUNCTION:NAME 3 5167 exece:entry 9186691866: /opt/local/gcc47/libexec/gcc/x86_64-sun-solaris2.11/4.7.3/collect2 -R/opt/local argv[0]: /opt/local/gcc47/libexec/gcc/x86_64-sun- solaris2.11/4.7.3/collect2 argv[1]: -R/opt/local/lib/ argv[2]: -Y argv[3]: P,/lib/amd64:/usr/lib/amd64:/opt/local/lib/ argv[4]: -Qy argv[5]: -o argv[6]: topHandler02.o argv[7]: -L/opt/local/gcc47/lib/gcc/x86_64-sun-solaris2.11/4.7.3 argv[8]: -L/opt/local/gcc47/lib/gcc/x86_64-sun- solaris2.11/4.7.3/../../../../x86_64-sun-solaris2.11/lib/amd64 argv[9]: -L/opt/local/gcc47/lib/gcc/x86_64-sun- solaris2.11/4.7.3/../../../amd64 argv[10]: -L/lib/amd64 argv[11]: -L/usr/lib/amd64 argv[12]: -L/opt/local/gcc47/lib/gcc/x86_64-sun- solaris2.11/4.7.3/../../../../x86_64-sun-solaris2.11/lib argv[13]: -L/opt/local/gcc47/lib/gcc/x86_64-sun-solaris2.11/4.7.3/../../.. argv[14]: -R/opt/local/gcc47/x86_64-sun-solaris2.11/lib/amd64 argv[15]: -R/opt/local/gcc47/lib/amd64 argv[16]: -lrt argv[17]: -r argv[18]: /tmp/ghc91814_0/ghc91814_6.o argv[19]: /tmp/ghc91814_0/ghc91814_5.o }}} I was then able to run them in isolation with GHC's temp files present on disk: {{{ # /opt/local/gcc47/libexec/gcc/x86_64-sun-solaris2.11/4.7.3/collect2 -R/opt/local/lib/ -Y P,/lib/amd64:/usr/lib/amd64:/opt/local/lib/ -Qy -o topHandler02.o -L/opt/local/gcc47/lib/gcc/x86_64-sun-solaris2.11/4.7.3 -L/opt/local/gcc47/lib/gcc/x86_64-sun-solaris2.11/4.7.3/../../../../x86_64 -sun-solaris2.11/lib/amd64 -L/opt/local/gcc47/lib/gcc/x86_64-sun- solaris2.11/4.7.3/../../../amd64 -L/lib/amd64 -L/usr/lib/amd64 -L/opt/local/gcc47/lib/gcc/x86_64-sun-solaris2.11/4.7.3/../../../../x86_64 -sun-solaris2.11/lib -L/opt/local/gcc47/lib/gcc/x86_64-sun- solaris2.11/4.7.3/../../.. -R/opt/local/gcc47/x86_64-sun- solaris2.11/lib/amd64 -R/opt/local/gcc47/lib/amd64 -lrt -r /tmp/ghc91814_0/ghc91814_6.o /tmp/ghc91814_0/ghc91814_5.o ld: fatal: library -lrt: not found ld: fatal: file processing errors. No output written to topHandler02.o collect2: error: ld returned 1 exit status }}} If I omit '''-lrt''' from the arguments it succeeds (on Illumos-based systems, including SmartOS, librt is a passthrough to libc): {{{ # /opt/local/gcc47/libexec/gcc/x86_64-sun-solaris2.11/4.7.3/collect2 -R/opt/local/lib/ -Y P,/lib/amd64:/usr/lib/amd64:/opt/local/lib/ -Qy -o topHandler02.o -L/opt/local/gcc47/lib/gcc/x86_64-sun-solaris2.11/4.7.3 -L/opt/local/gcc47/lib/gcc/x86_64-sun-solaris2.11/4.7.3/../../../../x86_64 -sun-solaris2.11/lib/amd64 -L/opt/local/gcc47/lib/gcc/x86_64-sun- solaris2.11/4.7.3/../../../amd64 -L/lib/amd64 -L/usr/lib/amd64 -L/opt/local/gcc47/lib/gcc/x86_64-sun-solaris2.11/4.7.3/../../../../x86_64 -sun-solaris2.11/lib -L/opt/local/gcc47/lib/gcc/x86_64-sun- solaris2.11/4.7.3/../../.. -R/opt/local/gcc47/x86_64-sun- solaris2.11/lib/amd64 -R/opt/local/gcc47/lib/amd64 -r /tmp/ghc91814_0/ghc91814_6.o /tmp/ghc91814_0/ghc91814_5.o # echo $? 0 }}} No errors are emitted and the exit code is 0 (good). I would like to conditionally omit '''-lrt''' from the ld arguments. Where do I need to look for where ghc-stage2 populates the arguments to ld? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8921 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler