August 2013 - ghc-devs

Building GHC on Mac stops
by Kazu Yamamoto 06 Aug '13

06 Aug '13

Hi, I'm using GHC head (32bit) on Mac. Recently, building GHC head stops: ---- % make maintainer-clean; perl boot; ./configure --prefix=/ghc-head; make -j3 ranlib: file: .libs/libgmp.a(mp_clz_tab.o) has no symbols ranlib: file: .libs/libgmp.a(obprintf.o) has no symbols ranlib: file: .libs/libgmp.a(obvprintf.o) has no symbols ranlib: file: .libs/libgmp.a(obprntffuns.o) has no symbols ranlib: file: .libs/libgmp.a(repl-vsnprintf.o) has no symbols libtool: link: rm -fr .libs/libgmp.lax libtool: link: ( cd ".libs" && rm -f "libgmp.la" && cp -p "../libgmp.la" "libgmp.la" ) cp libraries/integer-gmp/gmp/gmpbuild/gmp.h libraries/integer-gmp/gmp/ cp libraries/integer-gmp/gmp/gmpbuild/.libs/libgmp.a libraries/integer-gmp/gmp/ inplace/bin/mkdirhier libraries/integer-gmp/gmp/objs cd libraries/integer-gmp/gmp/objs && /usr/bin/ar x ../libgmp.a ranlib libraries/integer-gmp/gmp/libgmp.a ranlib: file: libraries/integer-gmp/gmp/libgmp.a(mp_clz_tab.o) has no symbols ranlib: file: libraries/integer-gmp/gmp/libgmp.a(obprintf.o) has no symbols ranlib: file: libraries/integer-gmp/gmp/libgmp.a(obvprintf.o) has no symbols ranlib: file: libraries/integer-gmp/gmp/libgmp.a(obprntffuns.o) has no symbols ranlib: file: libraries/integer-gmp/gmp/libgmp.a(repl-vsnprintf.o) has no symbols make: *** [all] Error 2 % ---- One more "make -j3" finishes the building. I'm sure that this does not happen before. Are there any guys who get this problem? --Kazu

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ld.gold
by Kazu Yamamoto 06 Aug '13

06 Aug '13

Hi, If I understand correctly, GHC head supports ld.gold (on Linux). But GHC got the following error: ---- % ghc -pgml=ld.gold -threaded Witty.hs [1 of 9] Compiling Types ( Types.hs, Types.o ) ... [9 of 9] Compiling Main ( Witty.hs, Witty.o ) Linking Witty ... <no location info>: Warning: Couldn't figure out linker information! Make sure you're using GNU ld, GNU gold or the built in OS X linker, etc. ld.gold: -Wl,-u,ghczmprim_GHCziTypes_Izh_static_info: unknown option ld.gold: use the --help option for usage information ---- How can I provide necessary linker information to GHC? --Kazu

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"~~" in sync-all
by Kazu Yamamoto 05 Aug '13

05 Aug '13

Hi, A recent change[1] to sync-all introduces the "~~" operator of Perl. It seems to me that this operator is not supported by old Perl. % perl --version This is perl, v5.8.8 built for i386-linux-thread-multi % ./sync-all -r git://github.com/ghc --testsuite get syntax error at ./sync-all line 904, near ""pull" ~" BEGIN not safe after errors--compilation aborted at ./sync-all line 906. Sorry for using old Perl but I appreciate if this operator will be replaced with others. [1] commit 968998e69a745e38a47f4771a3244008f19ebc4a Author: Erik de Castro Lopo <erikd(a)mega-nerd.com> Date: Mon Aug 5 11:22:04 2013 +1000 --Kazu

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Quick Cmm question
by Jan Stolarek 05 Aug '13

05 Aug '13

I have a question about this piece of Cmm code: cJI: R1 = _sGG::P32; call (stg_gc_enter_1)(R1) args: 4, res: 0, upd: 4; cJK: ... Does the call to stg_gc_enter_1 return to cJK: a) never; b) sometimes; c) always ? I'm looking at the implementation in rts/HeapStackCheck.cmm but I don't know the meaning of `jump stg_returnToSched [R1];` at the and of stg_gc_noregs. Any help will be appreciated. Janek

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GHC git server issue : warning: setlocale: LC_ALL: cannot change locale (en_AU.UTF-8)
by Erik de Castro Lopo 05 Aug '13

05 Aug '13

Hi all, I'm getting the above warning messahe every time I pull from the main GHC git repo. The strange thing is that this only happens on the GHC repo, on a whole bunch of others I get no such warning. After some pretty rigorous investigation I concluded that this is actually a issues with the GHC sit server. Since I'm doing the pull over ssh, ssh passes my environment (include LC_*) to the server, but the server doesn't support en_AU.UTF-8. To explore further, I sshed into darcs.haskell.org and it seems that locales are completely broken on this machine. Not even en_US.UTF-8 is support. I suppose its not a big deal but it would be nice to fix so no one else wastes any time debugging this. Erik -- ---------------------------------------------------------------------- Erik de Castro Lopo http://www.mega-nerd.com/

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libffi-tarballs
by Richard Eisenberg 05 Aug '13

05 Aug '13

After the libffi-tarballs submodule was added, I did a ./sync-all pull, a ./sync-all get, and a git submodule update. Everything builds just fine, but I get this answer from git status: # On branch master # Untracked files: # (use "git add <file>..." to include in what will be committed) # # libffi-tarballs/ nothing added to commit but untracked files present (use "git add" to track) Is this expected? How can I fix this? Thanks! Richard

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Can't "make" ghc on master
by Alfredo Di Napoli 05 Aug '13

05 Aug '13

Hello guys, I'm trying a fresh compile from master. These are the steps I've taken: $ git clone http://darcs.haskell.org/ghc.git/ $ cd ghc $ ./sync-all --testsuite get followed by: cp mk/build.mk.sample mk/build.mk <uncommenting #BuildFlavour = quick> and finally: $ perl boot $ ./configure $ make But this is what I've got in the middle of make (just posting the relevant section): https://gist.github.com/adinapoli/6154219 As you can see I'm sandboxed inside hsenv, but I can't think of any reason this being the cause of the failure. Any ideas? Sorry for the naive question, A.

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libffi
by Simon Peyton-Jones 04 Aug '13

04 Aug '13

I'm trying to build HEAD. I get a problem with libffi. Not surprising because in ghc-tarballs I see git log -3 commit f190b3ce329422e13cbe1b5dad030058ca4bdda7 Author: Ian Lynagh <ian(a)well-typed.com> Date: Tue Jul 30 15:56:23 2013 +0100 Remove libffi tarball It's now in its own repo But ./sync-all get doesn't get a libffi repo. Nor is it listed in ./packages. Does anyone have any idea where this new libffi repo is, and why it isn't listed? Thanks Simon

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gdb values optimized out
by William Kenyon 04 Aug '13

04 Aug '13

Dear GHC devs, I am having problems using gdb to debug ghci. > ./inplace/bin/ghc-stage2 --interactive Segmentation fault (core dumped) > gdb ./inplace/lib/bin/ghc-stage2 core.1234 Which works fine, but many variables are <optimized out>. GhcDebugged=YES is set in my build.mk. > ./inplace/bin/ghc-stage2 +RTS --info ... Rts Way = rts_thr_debug ... > ./inplace/bin/ghc-stage1 +RTS --info ... Rts Way = rts_debug ... The debug way should make all C and C-- files be compiled with -O0. Which should mean that nothing appears <optimized out> in gdb. What am I missing? Thanks, Will

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sync-all get failing
by Simon Peyton-Jones 03 Aug '13

03 Aug '13

./sync-all get is failing (see below). Any ideas? Simon bash-3.1$ ./sync-all get warning: ghc-tarballs already present; omitting == ghc-tarballs: running git config --local core.ignorecase true error: unknown option `local' usage: git config [options] Config file location --global use global config file --system use system config file -f, --file <FILE> use given config file Action --get get value: name [value-regex] --get-all get all values: key [value-regex] --get-regexp get values for regexp: name-regex [value-regex] --replace-all replace all matching variables: name value [value_regex] --add adds a new variable: name value --unset removes a variable: name [value-regex] --unset-all removes all matches: name [value-regex] --rename-section rename section: old-name new-name --remove-section remove a section: name -l, --list list all -e, --edit opens an editor --get-color <slot> find the color configured: [default] --get-colorbool <slot> find the color setting: [stdout-is-tty] Type --bool value is "true" or "false" --int value is decimal number --bool-or-int value is --bool or --int --path value is a path (file or directory name) Other -z, --null terminate values with NUL byte git failed: 33024 at ./sync-all line 116. == Checking for old haddock repo == Checking for old binary repo == Checking for old mtl repo == Checking for old Cabal repo == Checking for old time from tarball bash-3.1$

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