GHC 8.2.1 + lld on FreeBSD
Hi, I've been playing with ghc 8.2.1 and clang + lld on FreeBSD 11. I wasn't able to get the installation as per release notes to select lld instead of gold (will spend more time exploring why when I get a chance) so I modified the settings file after install. I have builds running okay but I keep seeing the following: [1 of 1] Compiling Main ( hs.hs, hs.o ) Linking hs ... <no location info>: error: Warning: Couldn't figure out linker information! Make sure you're using GNU ld, GNU gold or the built in OS X linker, etc. I've set up ld.lld39 as the shipped lld is 4.0. Although not affecting the actual build ("Hello World") but was interested to know why this was happening. Settings file is below: [("GCC extra via C opts", " -fwrapv -fno-builtin"), ("C compiler command", "clang"), ("C compiler flags", " -fno-stack-protector"), ("C compiler link flags", "-L/usr/local/lib -fuse-ld=lld39"), ("C compiler supports -no-pie", "NO"), ("Haskell CPP command","clang"), ("Haskell CPP flags","-E -undef -traditional"), ("ld command", "ld.lld"), ("ld flags", "-L/usr/local/lib"), ("ld supports compact unwind", "YES"), ("ld supports build-id", "YES"), ("ld supports filelist", "NO"), ("ld is GNU ld", "YES"), ("ar command", "/usr/bin/ar"), ("ar flags", "clqs"), ("ar supports at file", "NO"), ("touch command", "touch"), ("dllwrap command", "/bin/false"), ("windres command", "/bin/false"), ("libtool command", "libtool"), ("perl command", "/usr/local/bin/perl"), ("cross compiling", "NO"), ("target os", "OSFreeBSD"), ("target arch", "ArchX86_64"), ("target word size", "8"), ("target has GNU nonexec stack", "True"), ("target has .ident directive", "True"), ("target has subsections via symbols", "False"), ("target has RTS linker", "@HaskellHaveRTSLinker@"), ("Unregisterised", "NO"), ("LLVM llc command", "llc39"), ("LLVM opt command", "opt39") ] Thanks Sumit
On Tue, Aug 15, 2017 at 5:25 AM, Sumit Raja
Hi,
I've been playing with ghc 8.2.1 and clang + lld on FreeBSD 11. I wasn't able to get the installation as per release notes to select lld instead of gold (will spend more time exploring why when I get a chance) so I modified the settings file after install. I have builds running okay but I keep seeing the following:
[1 of 1] Compiling Main ( hs.hs, hs.o ) Linking hs ...
<no location info>: error: Warning: Couldn't figure out linker information! Make sure you're using GNU ld, GNU gold or the built in OS X linker, etc.
I've set up ld.lld39 as the shipped lld is 4.0. Although not affecting the actual build ("Hello World") but was interested to know why this was happening. Settings file is below:
[("GCC extra via C opts", " -fwrapv -fno-builtin"), ("C compiler command", "clang"), ("C compiler flags", " -fno-stack-protector"), ("C compiler link flags", "-L/usr/local/lib -fuse-ld=lld39"), ("C compiler supports -no-pie", "NO"), ("Haskell CPP command","clang"), ("Haskell CPP flags","-E -undef -traditional"), ("ld command", "ld.lld"), ("ld flags", "-L/usr/local/lib"), ("ld supports compact unwind", "YES"), ("ld supports build-id", "YES"), ("ld supports filelist", "NO"), ("ld is GNU ld", "YES"), ("ar command", "/usr/bin/ar"), ("ar flags", "clqs"), ("ar supports at file", "NO"), ("touch command", "touch"), ("dllwrap command", "/bin/false"), ("windres command", "/bin/false"), ("libtool command", "libtool"), ("perl command", "/usr/local/bin/perl"), ("cross compiling", "NO"), ("target os", "OSFreeBSD"), ("target arch", "ArchX86_64"), ("target word size", "8"), ("target has GNU nonexec stack", "True"), ("target has .ident directive", "True"), ("target has subsections via symbols", "False"), ("target has RTS linker", "@HaskellHaveRTSLinker@"), ("Unregisterised", "NO"), ("LLVM llc command", "llc39"), ("LLVM opt command", "opt39") ]
Thanks
Sumit _______________________________________________ Haskell-Cafe mailing list To (un)subscribe, modify options or view archives go to: http://mail.haskell.org/cgi-bin/mailman/listinfo/haskell-cafe Only members subscribed via the mailman list are allowed to post.
On a quest for building GHC with clang, I've fixed almost identical warning, see https://phabricator.haskell.org/D3840 There should be a similar case expression for a linker tool too, I presume.
participants (2)
-
Gleb Popov -
Sumit Raja