I darcs pulled cabal head to get latest cabal, removed -Werror from GHC-Options in the cabal file, removed HsRegexPosixConfig.h and tried again with the same result. It seems to really want that file. With, it installs, without, no install. $ darcs whatsnew { hunk ./regex-posix.cabal 16 -Build-Depends: regex-base >= 0.80, base >= 2.0 +Build-Depends: regex-base >= 0.80, base >= 2.0, array, containers, byt estring hunk ./regex-posix.cabal 32 -GHC-Options: -Wall -Werror -O2 +GHC-Options: -Wall -O2 hunk ./regex-posix.cabal 43 -Include-Dirs: include +Include-Dirs: include/regex } Chris Kuklewicz 08/30/2007 12:34 PM To Thomas Hartman/ext/dbcom@DBAmericas cc haskell-cafe@haskell.org, "cvs-ghc@haskell.org" Subject Re: trouble compiling regex posix head (I think >0.92) on ghc 6.7 Thomas Hartman wrote:

I'm trying to compile regex-posix on ghc 6.7. (Ultimate goal: happs on 6.7).

I have not explored ghc 6.7. You should also try posting on the mailing list.

First, I patched by changing the cabal file to be compatible with the new libraries broken out of base. I also had to add HsRegexPosixConfig.h to include/regex (I just copied it from somewhere else on my hard drive where I guess it had been put by an earlier regex-posix install, I don't know if it's compatible here but at least it permitted things to compile further.)

I had no idea what HsRegexPosixConfig was, and I have no such file at all. So I looked in Wrap.hsc and found:

#ifdef HAVE_REGEX_H #define HAVE_REGCOMP 1 #else #ifndef __NHC__ #include "HsRegexPosixConfig.h" #else #define HAVE_REGEX_H 1 #define HAVE_REGCOMP 1 #endif #endif

Note that I did not write that section -- that was added by someone else. So HsRegexPosixConfig.h should only matter if HAVE_REGEX_H is undefined. The regex-base.cabal file says: "CC-Options: -DHAVE_REGEX_H" So unless Cabal is having a very very bad day, I assume that HsRegexPosixConfig.h is never needed. That it matters to your build to have that file seems _wrong_ to me. The only header file it should need is "regex.h"

Setup.hs build -v3 had a lot of warnings but didn't seem to fail. However, Setup.hs install -v3 didn't work.

You might try to change the cabal file. Currently I think it is "GHC-Options: -Wall -Werror -O2" and remove -Werror "GHC-Options: -Wall -O2" And you can change the cabal "Include-Dirs" to point to wherever it will find "regex.h"

the problem in build seems to occur around "upsweep partially failed or main not exported"...

That means nothing to me.

[6 of 6] Compiling Text.Regex.Posix ( Text/Regex/Posix.hs, dist/build/Text/Regex/Posix.o ) *** Parser: *** Renamer/typechecker:

Text/Regex/Posix.hs:57:2: Warning: The export item `module Text.Regex.Posix.String' exports nothing

Text/Regex/Posix.hs:59:2: Warning: The export item `module Text.Regex.Posix.Sequence' exports nothing

Text/Regex/Posix.hs:61:2: Warning: The export item `module Text.Regex.Posix.ByteString' exports nothing

Text/Regex/Posix.hs:63:2: Warning: The export item `module Text.Regex.Posix.ByteString.Lazy' exports nothing

Those warning are slightly bogus. Including the module should export the instances.

*** Deleting temp files: Deleting: /tmp/ghc9618_0/ghc9618_0.s Warning: deleting non-existent /tmp/ghc9618_0/ghc9618_0.s Upsweep partially successful. *** Deleting temp files: Deleting: link(batch): upsweep (partially) failed OR Main.main not exported; not linking. *** Deleting temp files: Deleting: *** Deleting temp dirs: Deleting: /tmp/ghc9618_0

complete output (along with patch) is attached.

I'd appreciate any advice.

best, thomas.

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