from the access control list. Don't leave them there but
deny them access, because 'they' may be a list that
includes you!</para>
+ <para>[March 2003] In fact <command>ssh</command> 3.6.1 now seems to <emphasis>require</emphasis>
+ you to have Unix permissions 600 (read/write for owner only)
+ on the <literal>.ssh/identity</literal> file, else it
+ bombs out. For your local C drive, it seems that <literal>chmod 600 identity</literal> works,
+ but on Windows NT/XP, it doesn't work on a network drive (exact dteails obscure).
+ The solution seems to be to set the CYGWIN environment
+ variable to "<literal>ntsec neta</literal>". The CYGWIN environment variable is discussed
+ in <ulink url="http://cygwin.com/cygwin-ug-net/using-cygwinenv.html">the Cygwin User's Guide</ulink>,
+ and there are more details in <ulink url="http://cygwin.com/faq/faq_4.html#SEC44">the Cygwin FAQ</ulink>.
+ </para>
</listitem>
<listitem>
<literal>hslibs</literal> and <literal>libraries</literal>
modules (for a full list of the projects available, see
<xref linkend="projects">).</para>
+
+ <para>Remember that if you do not have
+ <literal>happy</literal> installed, you need to check it out
+ as well.</para>
</listitem>
</itemizedlist>
</sect2>
you the results.</para>
</listitem>
- <listitem>
+ <listitem>
+ <para>If you changed something in the
+ <literal>fptools/libraries</literal> subdirectories, also run
+ <literal>make html</literal> to check if the documentation can
+ be generated successfully, too.</para>
+ </listitem>
+
+ <listitem>
<para>Before checking in a change, you need to update your
source tree:</para>
major cause of headaches. </para>
<para>So, to avoid a lot of hassle, follow this recipe for
- updating your tree: </para>
+ updating your tree:</para>
<screen>
$ cd fptools
-$ cvs update -Pd 2>&1 | tee log</screen>
+$ cvs update -P 2>&1 | tee log</screen>
<para>Look at the log file, and fix any conflicts (denoted by a
- <quote>C</quote> in the first column). If you're using multiple
- build trees, then for every build tree you have pointing at this
- source tree, you need to update the links in case any new files
- have appeared: </para>
+ <quote>C</quote> in the first column). New directories may have
+ appeared in the repository; CVS doesn't check these out by
+ default, so to get new directories you have to explicitly do
+<screen>
+$ cvs update -d</screen>
+ in each project subdirectory. Don't do this at the top level,
+ because then <emphasis>all</emphasis> the projects will be
+ checked out.</para>
+
+ <para>If you're using multiple build trees, then for every build
+ tree you have pointing at this source tree, you need to update
+ the links in case any new files have appeared: </para>
<screen>
$ cd <replaceable>build-tree</replaceable>
<command>egcs</command>) have varying degrees of stability
depending on the platform.</para>
+ <para>GCC 3.2 is currently known to have problems building
+ GHC on Sparc, but is stable on x86.</para>
+
+ <para>GCC 3.3 currently cannot be used to build GHC, due to
+ some problems with the new C preprocessor.</para>
+
<para>If your GCC dies with “internal error” on
some GHC source file, please let us know, so we can report
it and get things improved. (Exception: on iX86
(<literal>fptools/happy</literal>). It can be built from
source, but bear in mind that you'll need GHC installed in
order to build it. To avoid the chicken/egg problem,
- install a binary distribtion of either Happy or GHC to get
+ install a binary distribution of either Happy or GHC to get
started. Happy distributions are available from <ulink
url="http://www.haskell.org/happy/">Happy's Web
Page</ulink>.</para>
CVS sources, it is <emphasis>not</emphasis> needed if you
just intend to build a standard source distribution.</para>
+ <para>Version 2.52 or later of autoconf is required.
+ NB. vesrion 2.13 will no longer work, as of GHC version
+ 6.1.</para>
+
<para>Autoconf builds the <command>configure</command>
script from <filename>configure.in</filename> and
<filename>aclocal.m4</filename>. If you modify either of
<listitem>
<para>PVM is the Parallel Virtual Machine on which
Parallel Haskell programs run. (You only need this if you
- plan to run Parallel Haskell. Concurent Haskell, which
+ plan to run Parallel Haskell. Concurrent Haskell, which
runs concurrent threads on a uniprocessor doesn't need
it.) Underneath PVM, you can have (for example) a network
of workstations (slow) or a multiprocessor box
includes <filename>build.mk</filename> after
<filename>config.mk</filename>.)</para>
+ <para>For your convenience, there's a file called <filename>build.mk.sample</filename>
+ that can serve as a starting point for your <filename>build.mk</filename>.</para>
+
<para>For example, <filename>config.mk.in</filename> contains
the definition:</para>
<para> Do <emphasis>NOT</emphasis> use
<filename>ghc/compiler/ghc</filename>, or
- <filename>ghc/compiler/ghc-5.xx</filename>, as these are the
+ <filename>ghc/compiler/ghc-6.xx</filename>, as these are the
scripts intended for installation, and contain hard-wired paths
to the installed libraries, rather than the libraries in the
build tree.</para>
target machine, and compiling them using gcc to get a working
GHC.</para>
- <para><emphasis>NOTE: GHC version 5.xx is significantly harder
- to bootstrap from C than previous versions. We recommend
- starting from version 4.08.2 if you need to bootstrap in this
- way.</emphasis></para>
+ <para><emphasis>NOTE: GHC versions 5.xx and later are
+ significantly harder to bootstrap from C than earlier versions.
+ We recommend starting from version 4.08.2 if you need to
+ bootstrap in this way.</emphasis></para>
<para>HC files are architecture-dependent (but not
OS-dependent), so you have to get a set that were generated on
</programlisting>
<programlisting>
-# build.mk for GHC 5.xx
+# build.mk for GHC 5.xx and 6.x
GhcUnregisterised=YES
</programlisting>
- <para>Version 5.xx only: use the option
+ <para>Versions 5.xx and 6.x only: use the option
<option>--enable-hc-boot-unregisterised</option> instead of
<option>--enable-hc-boot</option> when running
<filename>./configure</filename>.</para>
</para>
-<sect2><Title>Cygwin and MinGW</Title>
+<sect2 id="cygwin-and-mingw"><Title>Cygwin and MinGW</Title>
<para> The Windows situation for building GHC is rather confusing. This section
tries to clarify, and to establish terminology.</para>
</para>
</sect3>
+<sect3><title>HOST_OS vs TARGET_OS</title>
+
+<para>
+In the source code you'll find various ifdefs looking like:
+<programlisting>
+ #ifdef mingw32_HOST_OS
+ ...blah blah...
+ #endif
+</programlisting>
+and
+<programlisting>
+ #ifdef mingw32_TARGET_OS
+ ...blah blah...
+ #endif
+</programlisting>
+These macros are set by the configure script (via the file config.h).
+Which is which? The criterion is this. In the ifdefs in GHC's source code:
+<itemizedlist>
+ <listitem> <para>
+ The "host" system is the one on which GHC itself will be run.
+ </para> </listitem>
+ <listitem> <para>
+ The "target" system is the one for which the program compiled by GHC will be run.
+ </para> </listitem>
+</itemizedlist>
+For a stage-2 compiler, in which GHCi is available, the "host" and "target" systems must be the same.
+So then it doesn't really matter whether you use the HOST_OS or TARGET_OS cpp macros.
+
+</para>
+</sect3>
+
<sect3><title>Summary</title>
<para>Notice that "GHC-mingw" means "GHC that <emphasis>targets</emphasis> MinGW". It says nothing about
<para> Install Cygwin from <ulink url="http://www.cygwin.com/">http://www.cygwin.com/</ulink>.
The installation process is straightforward; we install it in <Filename>c:/cygwin</Filename>.
-Both <command>cvs</command> and <command>ssh</command>
-come with Cygwin, but you'll need them, so make sure you select them when running
-the Cygwin installer.
+During the installation dialogue, make sure that you select:
+<command>cvs</command>, <command>openssh</command>,
+<command>autoconf</command>,
+<command>binutils</command> (includes ld and (I think) ar),
+<command>gcc</command>,
+<command>flex</command>,
+<command>make</command>.
</para>
<para> Now set the following user environment variables:
<itemizedlist>
<listitem>
<para>
+By default, cygwin provides the command shell <filename>ash</filename>
+as <filename>sh.exe</filename>. We have often seen build-system problems that
+turn out to be due to bugs in <filename>ash</filename>
+(to do with quoting
+and length of command lines). On the other hand <filename>bash</filename> seems
+to be rock solid.
+So, in <filename>cygwin/bin</filename>
+remove the supplied <filename>sh.exe</filename> (or rename it as <filename>ash.exe</filename>),
+and copy <filename>bash.exe</filename> to <filename>sh.exe</filename>.
+You'll need to do this in Windows Explorer or the Windows <command>cmd</command> shell, because
+you can't rename a running program!
+</para>
+</listitem>
+
+<listitem>
+<para>
Some script files used in the make system start with "<Command>#!/bin/perl</Command>",
-(and similarly for <Command>bash</Command>). Notice the hardwired path!
+(and similarly for <Command>sh</Command>). Notice the hardwired path!
So you need to ensure that your <Filename>/bin</Filename> directory has the following
binaries in it:
<itemizedlist>
installed as <Filename>c:/cygwin/bin</Filename>. By default Cygwin mounts "<Filename>/</Filename>" as
<Filename>c:/cygwin</Filename>, so if you just take the defaults it'll all work ok.
(You can discover where your Cygwin
-root directory <Filename>/</Filename> is by typing <Command>mount</Command>).
+root directory <Filename>/</Filename> is by typing <Command>mount</Command>.)
Provided <Filename>/bin</Filename> points to the Cygwin <Filename>bin</Filename>
-directory, there's no need to copy anything.
-</para>
-</listitem>
-
-<listitem>
-<para>
-By default, cygwin provides the command shell <filename>ash</filename>
-as <filename>sh.exe</filename>. It has a couple of 'issues' (to do with quoting
-and length of command lines), so
-in your <filename>/bin</filename> directory, make sure that <filename>
-bash.exe</filename> is also provided as <filename>sh.exe</filename>
-(i.e. overwrite the old <filename>sh.exe</filename> with a copy of
-<filename>bash.exe</filename>).
+directory, there's no need to copy anything. If not, copy these binaries from the <filename>cygwin/bin</filename>
+directory (after fixing the <filename>sh.exe</filename> stuff mentioned in the previous bullet).
</para>
</listitem>
</itemizedlist>
<listitem>
<para>GHC uses the <emphasis>mingw</emphasis> C compiler to
-generate code, so you have to install that. Just pick up a mingw bundle at
+generate code, so you have to install that (see <xref linkend="cygwin-and-mingw">).
+Just pick up a mingw bundle at
<ulink url="http://www.mingw.org/">http://www.mingw.org/</ulink>.
We install it in <filename>c:/mingw</filename>.
</para>
<listitem>
+<para>We use <command>emacs</command> a lot, so we install that too.
+When you are in <filename>fptools/ghc/compiler</filename>, you can use
+"<literal>make tags</literal>" to make a TAGS file for emacs. That uses the utility
+<filename>fptools/ghc/utils/hasktags/hasktags</filename>, so you need to make that first.
+The most convenient way to do this is by going <literal>make boot</literal> in <filename>fptools/ghc</filename>.
+The <literal>make tags</literal> command also uses <command>etags</command>, which comes with <command>emacs</command>,
+so you will need to add <filename>emacs/bin</filename> to your <literal>PATH</literal>.
+</para>
+</listitem>
+
+
+<listitem>
<para> Finally, check out a copy of GHC sources from
the CVS repository, following the instructions above (<xref linkend="cvs-access">).
</para>
<filename>fptools/</filename> thus:
<Screen>
- ./configure --host=i386-unknown-mingw32 --with-gcc=/mingw/bin/gcc
+ ./configure --host=i386-unknown-mingw32 --with-gcc=c:/mingw/bin/gcc
</Screen>
This is the point at which you specify that you are building GHC-mingw
-(see <xref linkend="ghc-mingw">).
+(see <xref linkend="ghc-mingw">). </para>
-Both these options are important! It's possible to get into
+<para> Both these options are important! It's possible to get into
trouble using the wrong C compiler!</para>
+<para>
+Furthermore, it's <emphasis>very important</emphasis> that you specify a
+full MinGW path for <command>gcc</command>, not a Cygwin path, because GHC (which
+uses this path to invoke <command>gcc</command>) is a MinGW program and won't
+understand a Cygwin path. For example, if you
+say <literal>--with-gcc=/mingw/bin/gcc</literal>, it'll be interpreted as
+<filename>/cygdrive/c/mingw/bin/gcc</filename>, and GHC will fail the first
+time it tries to invoke it. Worse, the failure comes with
+no error message whatsoever. GHC simply fails silently when first invoked,
+typically leaving you with this:
+<programlisting>
+make[4]: Leaving directory `/cygdrive/e/fptools-stage1/ghc/rts/gmp'
+../../ghc/compiler/ghc-inplace -optc-mno-cygwin -optc-O
+ -optc-Wall -optc-W -optc-Wstrict-prototypes -optc-Wmissing-prototypes
+ -optc-Wmissing-declarations -optc-Winline -optc-Waggregate-return
+ -optc-Wbad-function-cast -optc-Wcast-align -optc-I../includes
+ -optc-I. -optc-Iparallel -optc-DCOMPILING_RTS
+ -optc-fomit-frame-pointer -O2 -static
+ -package-name rts -O -dcore-lint -c Adjustor.c -o Adjustor.o
+make[2]: *** [Adjustor.o] Error 1
+make[1]: *** [all] Error 1
+make[1]: Leaving directory `/cygdrive/e/fptools-stage1/ghc'
+make: *** [all] Error 1
+</programlisting>
+Be warned!
+</para>
<para>
If you want to build GHC-cygwin (<xref linkend="ghc-cygwin">)
</para>
</listitem>
+<listitem><para> You almost certainly want to set
+<programlisting>
+ SplitObjs = NO
+</programlisting>
+in your <filename>build.mk</filename> configuration file (see <xref linkend="sec-build-config">).
+This tells the build system not to split each library into a myriad of little object files, one
+for each function. Doing so reduces binary sizes for statically-linked binaries, but on Windows
+it dramatically increases the time taken to build the libraries in the first place.
+</para>
+</listitem>
+
<listitem><para> Do not attempt to build the documentation.
It needs all kinds of wierd Jade stuff that we haven't worked out for
Win32.</para></listitem>
projects / ghc-hetmet.git / blobdiff