1. 27 Jan, 2005 1 commit
    • simonpj's avatar
      [project @ 2005-01-27 10:44:00 by simonpj] · 508a505e
      simonpj authored
      --------------------------------------------
                Replace hi-boot files with hs-boot files
        	--------------------------------------------
      
      This major commit completely re-organises the way that recursive modules
      are dealt with.
      
        * It should have NO EFFECT if you do not use recursive modules
      
        * It is a BREAKING CHANGE if you do
      
      ====== Warning: .hi-file format has changed, so if you are
      ======		updating into an existing HEAD build, you'll
      ======		need to make clean and re-make
      
      
      The details:  [documentation still to be done]
      
      * Recursive loops are now broken with Foo.hs-boot (or Foo.lhs-boot),
        not Foo.hi-boot
      
      * An hs-boot files is a proper source file.  It is compiled just like
        a regular Haskell source file:
      	ghc Foo.hs		generates Foo.hi, Foo.o
      	ghc Foo.hs-boot		generates Foo.hi-boot, Foo.o-boot
      
      * hs-boot files are precisely a subset of Haskell. In particular:
      	- they have the same import, export, and scoping rules
      	- errors (such as kind errors) in hs-boot files are checked
        You do *not* need to mention the "original" name of something in
        an hs-boot file, any more than you do in any other Haskell module.
      
      * The Foo.hi-boot file generated by compiling Foo.hs-boot is a machine-
        generated interface file, in precisely the same format as Foo.hi
      
      * When compiling Foo.hs, its exports are checked for compatibility with
        Foo.hi-boot (previously generated by compiling Foo.hs-boot)
      
      * The dependency analyser (ghc -M) knows about Foo.hs-boot files, and
        generates appropriate dependencies.  For regular source files it
        generates
      	Foo.o : Foo.hs
      	Foo.o : Baz.hi		-- Foo.hs imports Baz
      	Foo.o : Bog.hi-boot	-- Foo.hs source-imports Bog
      
        For a hs-boot file it generates similar dependencies
      	Bog.o-boot : Bog.hs-boot
      	Bog.o-boot : Nib.hi	-- Bog.hs-boto imports Nib
      
      * ghc -M is also enhanced to use the compilation manager dependency
        chasing, so that
      	ghc -M Main
        will usually do the job.  No need to enumerate all the source files.
      
      * The -c flag is no longer a "compiler mode". It simply means "omit the
        link step", and synonymous with -no-link.
      508a505e
  2. 26 Jan, 2005 5 commits
    • simonpj's avatar
      [project @ 2005-01-26 16:10:02 by simonpj] · 8254dcf1
      simonpj authored
      -----------------------
      	Fixup to hoistForAllTys
      	-----------------------
      
      * hoistForAllTys moves from TcHsType to TcType
      
      hoistForAllTys was being too vigorous and breaking up type synonyms,
      even when it was entirely unnecessary to do so.
      
      Not only does this make error messsages less good, but it's actually
      wrong for Haskell 98, because we are meant to report under-applied
      type synonyms, and that check doesn't happen until after hoistForAllTys.
      This led to a very obscure bug, immortalised as tcfail129.
      8254dcf1
    • simonmar's avatar
      [project @ 2005-01-26 16:03:40 by simonmar] · 55aa70cd
      simonmar authored
      Common up the ghc_ge_XXX variables into config.mk, and add the
      ability to build ghc/lib and ghc/utils using the stage1 compiler, by
      saying 'make UseStage1=YES'.  This is going to be useful for
      bootstrapping.
      55aa70cd
    • simonmar's avatar
      [project @ 2005-01-26 15:04:08 by simonmar] · ed009da3
      simonmar authored
      Remove System.FilePath, use System.Directory.Internals for now.
      ed009da3
    • simonmar's avatar
      [project @ 2005-01-26 13:45:11 by simonmar] · b0ba62a1
      simonmar authored
      Avoid use of System.FilePath, which is going away
      b0ba62a1
    • simonmar's avatar
      [project @ 2005-01-26 12:58:09 by simonmar] · 66797dc0
      simonmar authored
      fileLoop: catch InvalidArgument and behave as for EOF (i.e. terminate
      the session).  This means that the user can close stdin to end a GHCi
      session, but it also means that the tests that run programs which use
      getContents inside GHCi won't crash because stdin has been closed.
      66797dc0
  3. 24 Jan, 2005 1 commit
  4. 23 Jan, 2005 4 commits
    • wolfgang's avatar
      [project @ 2005-01-23 20:34:17 by wolfgang] · 1856c4c7
      wolfgang authored
      Distinguish between rodata and relrodata (relocatable read-only data) in the
      mangler.
      By default, use $T_HDR_rodata if $T_HDR_relrodata is not defined for a
      particular platform.
      1856c4c7
    • wolfgang's avatar
      [project @ 2005-01-23 18:50:40 by wolfgang] · e171a977
      wolfgang authored
      Make the NCG distinguish between the read-only data section and the
      "relocatable read-only data" section.
      Read-only data is supposed to be _really_ read-only, whereas "relrodata"
      can have relocations, but should not be modified by the program at runtime.
      
      For Linux, put relrodata into ".data" by default, as the dynamic linker
      tends to do evil things to avoid relocating things in read-only sections.
      e171a977
    • krasimir's avatar
      [project @ 2005-01-23 09:41:01 by krasimir] · 220f0ae7
      krasimir authored
      Use withProgName. Without it getProgName from the executed script will return
      "<interactive>"
      220f0ae7
    • wolfgang's avatar
      [project @ 2005-01-23 06:10:15 by wolfgang] · 6f985ae8
      wolfgang authored
      Add support for the dead code stripping feature of recent Apple linkers.
      If your code is compiled using the NCG, you can now specify
      -optl-W,-dead_strip on the GHC command line when linking.
      It will have basically the same effect as using split-objs to build the
      libraries.
      
      Advantages over split-objs:
          * No evil perl script involved
          * Requires no special handling when building libraries
      
      Disadvantages:
          * The current version of Apple's linker is slow when given the
            -dead_strip flag. _REALLY_ slow.
          * Mac OS X only.
      
      This works by making the NCG emit the .subsections_via_symbols directive.
      Additionally, we have to add an extra label at the top of every info table,
      and make sure that the entry code references it (otherwise the info table
      will be considered part of the preceding entry code).
      The mangler just removes the .subsections_via_symbols directive.
      6f985ae8
  5. 22 Jan, 2005 1 commit
  6. 21 Jan, 2005 6 commits
    • sof's avatar
      [project @ 2005-01-21 19:58:51 by sof] · c7fd6356
      sof authored
      win32 only:
        Tidy up delivery and handling of console events by having the low-level
        console event handler signal the RTS thread blocked waiting for I/O.
      c7fd6356
    • panne's avatar
      [project @ 2005-01-21 18:06:26 by panne] · d9d77353
      panne authored
      * Require happy >= 1.15 for build
      * Build some needed PostScript docs
      * Merge the ghc-doc- sub-package into the ghc sub-package, it's quite
        unusual to find the docs for a package blah under
        /usr/share/doc/packages/blah-doc
      d9d77353
    • simonmar's avatar
      [project @ 2005-01-21 16:02:47 by simonmar] · 3f205c43
      simonmar authored
      Don't try to run finalizers at program exit.  This turned out to be
      hard if not impossible to do in general, so now we don't attempt it at
      all.
      
      The Main.main wrapper, previously called runIO and now called
      runMainIO, flushes stdout and stderr before exiting.  This should
      catch most cases where programs rely on Handles being flushed at
      program exit, but note that now if you simply drop a Handle in your
      program, there's no guarantee it'll be flushed on exit.  If the
      punters complain enough, I suppose we could implement a global
      Handle table and flush them all at exit... I'd rather not do this if
      possible, though.  Better to teach people to close their Handles
      properly.
      3f205c43
    • simonmar's avatar
      [project @ 2005-01-21 12:48:38 by simonmar] · 5fcb4668
      simonmar authored
      Update packages documentation (phew)
      5fcb4668
    • simonmar's avatar
      [project @ 2005-01-21 11:04:39 by simonmar] · 73fabb89
      simonmar authored
      Update the --help text
      73fabb89
    • ross's avatar
      [project @ 2005-01-21 00:14:41 by ross] · e9012cf1
      ross authored
      repair import breakage
      e9012cf1
  7. 20 Jan, 2005 7 commits
    • ross's avatar
      [project @ 2005-01-20 18:35:47 by ross] · a3ca2db7
      ross authored
      more precise imports (including try from System.IO.Error)
      a3ca2db7
    • simonmar's avatar
      [project @ 2005-01-20 16:15:02 by simonmar] · f6072cc4
      simonmar authored
      ghc-pkg list: show hidden packages in parentheses
      f6072cc4
    • simonmar's avatar
      [project @ 2005-01-20 15:06:17 by simonmar] · 40a36f09
      simonmar authored
      Squash gcc 3.4.x warnings.
      40a36f09
    • simonmar's avatar
      [project @ 2005-01-20 15:05:59 by simonmar] · 73ef81cb
      simonmar authored
      One package.conf.in file I forgot
      73ef81cb
    • simonmar's avatar
      [project @ 2005-01-20 14:30:17 by simonmar] · 2a134ddd
      simonmar authored
      Avoid a warning
      2a134ddd
    • simonmar's avatar
      [project @ 2005-01-20 14:22:19 by simonmar] · c830ae13
      simonmar authored
      Fill in the haddock-interfaces and haddock-html fields in the
      package.conf files.
      
      To do this I had to make some changes:
      
        - haddock-interfaces requires the value of $(datadir).  We can't
          just plug this in, because $(datadir) might change at install-time
          (eg. a Windows installer can be placed anywhere, as can a Unix
          binary .tar.gz distribution).  The current trick is for the
          compiler to splice in the value of $libdir in package.conf at
          runtime.  So we could extend this mechanism and tell the compiler
          the value of $datadir via a command-line option, but that seems
          ugly.
      
          On Windows, $datadir==$libdir, so we don't need any changes:
          package.conf still uses $libdir, and a Windows installation is
          independent of its absolute location.  Even 'make install' on
          Windows should have this property.
      
          On Unix:
      	- for 'make install' and in-place execution, we just use
                absolute paths in package.conf
      
      	- for a binary dist, we generate a package.conf that refers
      	  to $libdir and $datadir, and splice in the values at
      	  install-time (distrib/Makefile-bin.in).
      
        - Also, I renamed $libdir to $topdir to more closely reflect its
          actual meaning.  This is somewhat malicious in that it will flush
          out all those clients using $libdir when they really shouldn't
          be :-)
      c830ae13
    • simonpj's avatar
      [project @ 2005-01-20 12:02:06 by simonpj] · 850ee50c
      simonpj authored
      Fix syntax error
      850ee50c
  8. 19 Jan, 2005 2 commits
  9. 18 Jan, 2005 4 commits
    • simonmar's avatar
      [project @ 2005-01-18 16:28:43 by simonmar] · 9cb75205
      simonmar authored
      USE_MMAP on Linux too: this is needed for sparc64-unknown-linux at
      least, and since it seems to work on i386-unknown-linux too we might
      as well enable it.  We should probably use it on more arches/OSs too.
      9cb75205
    • simonpj's avatar
      [project @ 2005-01-18 15:58:12 by simonpj] · 4a667166
      simonpj authored
      Wibble
      4a667166
    • simonmar's avatar
      [project @ 2005-01-18 13:51:28 by simonmar] · 79a733f5
      simonmar authored
      Update a comment
      79a733f5
    • simonpj's avatar
      [project @ 2005-01-18 12:18:11 by simonpj] · ac80e0de
      simonpj authored
      ------------------------
          Reorganisation of hi-boot files
        	------------------------
      
      The main point of this commit is to arrange that in the Compilation
      Manager's dependendency graph, hi-boot files are proper nodes. This
      is important to make sure that we compile everything in the right
      order.  It's a step towards hs-boot files.
      
      * The fundamental change is that CompManager.ModSummary has a new
        field, ms_boot :: IsBootInterface
      
        I also tided up CompManager a bit.  No change to the Basic Plan.
      
        ModSummary is now exported abstractly from CompManager (was concrete)
      
      * Hi-boot files now have import declarations.  The idea is they are
        compulsory, so that the dependency analyser can find them
      
      * I changed an invariant: the Compilation Manager used to ensure that
        hscMain was given a HomePackageTable only for the modules 'below' the
        one being compiled.  This was really only important for instances and
        rules, and it was a bit inconvenient.  So I moved the filter to the
        compiler itself: see HscTypes.hptInstances and hptRules.
      
      * Module Packages.hs now defines
          data PackageIdH
          = HomePackage 		-- The "home" package is the package
       				-- curently being compiled
          | ExtPackage PackageId	-- An "external" package is any other package
      
         It was just a Maybe type before, so this makes it a bit clearer.
      
      * I tried to add a bit better location info to the IfM monad, so that
        errors in interfaces come with a slightly more helpful error message.
        See the if_loc field in TcRnTypes --- and follow-on consequences
      
      * Changed Either to Maybes.MaybeErr in a couple of places (more perspicuous)
      ac80e0de
  10. 17 Jan, 2005 2 commits
  11. 16 Jan, 2005 2 commits
    • wolfgang's avatar
      [project @ 2005-01-16 05:31:39 by wolfgang] · 7a1b0a6c
      wolfgang authored
      A first stab at position independent code generation for i386-linux.
      It doesn't work yet, but it shouldn't break anything.
      
      What we need now is one or both of the following:
      a) A volunteer to implement PIC for x86 -fvia-C
          (I definitely refuse to touch any piece of code that contains
           both Perl and x86 assembly).
      b) A volunteer to improve the NCG to the point where it can compile
         the RTS (so we won't need point a).
      7a1b0a6c
    • wolfgang's avatar
      [project @ 2005-01-16 02:50:16 by wolfgang] · e195ea85
      wolfgang authored
      pprExpr: add cases for CmmPicBaseReg and CmmRegOff
      so that we can do -fPIC -ddump-opt-cmm
      e195ea85
  12. 14 Jan, 2005 5 commits
    • wolfgang's avatar
      [project @ 2005-01-14 22:47:29 by wolfgang] · 05990bef
      wolfgang authored
      Fix a typo in the previous commit.
      05990bef
    • wolfgang's avatar
      [project @ 2005-01-14 22:12:54 by wolfgang] · acea64ed
      wolfgang authored
      When -dynamic is specified but -fPIC is not, generate code that works around
      the ELF dynamic linker's misguided attempts to keep the main program unaware
      of dynamic linking.
      
      This involves generating indirect references and computed jumps for position
      dependent code, too, and making all constant data sections writable in order
      to persuade ld to not use "COPY" relocations.
      
      Tested on powerpc-linux; in theory, it also applies to i386-linux, but other
      parts of the PIC story are missing there.
      
      Note that the writable-const-data hack could be improved a bit by
      distinguishing between "really" constant data and "relocatable" constant data,
      which would be a nice thing to do anyway.
      acea64ed
    • simonmar's avatar
      [project @ 2005-01-14 17:57:41 by simonmar] · c464eda3
      simonmar authored
      HEADS UP!  You now need to use an up to date Happy from CVS to build
      GHC.  Happy version 1.15 will be released shortly.
      
      Replace the slow hacked up String-based GetImports with one based on
      the real Haskell parser.  This requires a new addition to Happy to
      support parsing partial files.  We now avoid reading each source file
      off the disk twice: once to get its module name and imports, and again
      to parse it.  Instead we just slurp it once, and cache the StringBuffer.
      
      This should result in improved startup times for ghc --make,
      especially when there are lots of source files.
      c464eda3
    • simonmar's avatar
      [project @ 2005-01-14 11:46:24 by simonmar] · 5155d694
      simonmar authored
      hGetStringBuffer: hClose the file after we've read it (duh).  This
      causes a real problem on Windows, where the file remains locked in
      GHCi, and cannot be modified until after the finalizer has closed it
      (bug #1047408).
      5155d694
    • simonmar's avatar
      [project @ 2005-01-14 11:34:44 by simonmar] · 20b21f5b
      simonmar authored
      retire $(compiling_with_4xx): we don't support compiling with 4.x any more
      20b21f5b