Remove -flocal-ghci-history from default flags
[ghc.git] / boot
diff --git a/boot b/boot
old mode 100644 (file)
new mode 100755 (executable)
index 9c1fad7..45f5bf0
--- a/boot
+++ b/boot
-#! /bin/sh
-set -e
-
-# Check that we have all boot packages.
-for dir in `grep "^[^# ][^ ]*  *[^ ][^ ]*$" packages | sed "s/ .*//"`
-do
-    if test ! -d $dir
-    then
-        echo "Looks like you're missing libraries/$dir." >&2
-        echo "Maybe you haven't done './darcs-all get'?" >&2
-        exit 1
-    fi
-done
+#!/usr/bin/env perl
+
+use warnings;
+use strict;
+
+use Cwd;
+use File::Path 'rmtree';
+use File::Basename;
+
+my %required_tag;
+my $validate;
+my $curdir;
+
+# See Trac #11530
+$ENV{GREP_OPTIONS} = '';
+
+$required_tag{"-"} = 1;
+$validate = 0;
+
+$curdir = &cwd()
+    or die "Can't find current directory: $!";
+
+while ($#ARGV ne -1) {
+    my $arg = shift @ARGV;
+
+    if ($arg =~ /^--required-tag=(.*)/) {
+        $required_tag{$1} = 1;
+    }
+    elsif ($arg =~ /^--validate$/) {
+        $validate = 1;
+    }
+    else {
+        die "Bad arg: $arg";
+    }
+}
+
+sub sanity_check_line_endings {
+    local $/ = undef;
+    open FILE, "packages" or die "Couldn't open file: $!";
+    binmode FILE;
+    my $string = <FILE>;
+    close FILE;
+
+    if ($string =~ /\r/) {
+        print STDERR <<EOF;
+Found ^M in packages.
+Perhaps you need to run
+    git config --global core.autocrlf false
+and re-check out the tree?
+EOF
+        exit 1;
+    }
+}
+
+sub sanity_check_tree {
+    my $tag;
+    my $dir;
+
+    if (-d ".git"  &&
+        system("git config remote.origin.url | grep github.com > /dev/null") == 0 &&
+        system("git config --get-regexp '^url.*github.com/.*/packages-.insteadOf' > /dev/null") != 0) {
+        # If we cloned from github, make sure the url rewrites are set.
+        # Otherwise 'git submodule update --init' prints confusing errors.
+        die <<EOF;
+It seems you cloned this repository from GitHub. But your git config files
+don't contain the url rewrites that are needed to make this work (GitHub
+doesn't support '/' in repository names, so we use a different naming scheme
+for the submodule repositories there).
+
+Please run the following commands first:
+
+  git config --global url."git://github.com/ghc/packages-".insteadOf     git://github.com/ghc/packages/
+  git config --global url."http://github.com/ghc/packages-".insteadOf    http://github.com/ghc/packages/
+  git config --global url."https://github.com/ghc/packages-".insteadOf   https://github.com/ghc/packages/
+  git config --global url."ssh://git\@github.com/ghc/packages-".insteadOf ssh://git\@github.com/ghc/packages/
+  git config --global url."git\@github.com:/ghc/packages-".insteadOf      git\@github.com:/ghc/packages/
+
+And then:
+
+  git submodule update --init
+  ./boot
+
+Or start over, and clone the GHC repository from the haskell server:
+
+  git clone --recursive git://git.haskell.org/ghc.git
+
+For more information, see:
+  * https://ghc.haskell.org/trac/ghc/wiki/Newcomers or
+  * https://ghc.haskell.org/trac/ghc/wiki/Building/GettingTheSources#CloningfromGitHub
+EOF
+    }
+
+    # Check that we have all boot packages.
+    open PACKAGES, "< packages";
+    while (<PACKAGES>) {
+        if (/^#/) {
+            # Comment; do nothing
+        }
+        elsif (/^([a-zA-Z0-9\/.-]+) +([^ ]+) +[^ ]+ +[^ ]+$/) {
+            $dir = $1;
+            $tag = $2;
+
+            # If $tag is not "-" then it is an optional repository, so its
+            # absence isn't an error.
+            if (defined($required_tag{$tag})) {
+                # We would like to just check for a .git directory here,
+                # but in an lndir tree we avoid making .git directories,
+                # so it doesn't exist. We therefore require that every repo
+                # has a LICENSE file instead.
+                if (! -f "$dir/LICENSE") {
+                    print STDERR "Error: $dir/LICENSE doesn't exist.\n";
+                    die "Maybe you haven't done 'git submodule update --init'?";
+                }
+            }
+        }
+        else {
+            die "Bad line in packages file: $_";
+        }
+    }
+    close PACKAGES;
+}
+
+# Create libraries/*/{ghc.mk,GNUmakefile}
+sub boot_pkgs {
+    my @library_dirs = ();
+
+    my $package;
+
+    for $package (glob "libraries/*/") {
+        $package =~ s/\/$//;
+        my $pkgs = "$package/ghc-packages";
+        if (-f $pkgs) {
+            open PKGS, "< $pkgs"
+                or die "Failed to open $pkgs: $!";
+            while (<PKGS>) {
+                chomp;
+                s/\r//g;
+                if (/.+/) {
+                    push @library_dirs, "$package/$_";
+                }
+            }
+        }
+        else {
+            push @library_dirs, $package;
+        }
+    }
+
+    for $package (@library_dirs) {
+        my $dir = &basename($package);
+        my @cabals = glob("$package/*.cabal.in");
+        if ($#cabals < 0) {
+            @cabals = glob("$package/*.cabal");
+        }
+        if ($#cabals > 0) {
+            die "Too many .cabal file in $package\n";
+        }
+        if ($#cabals eq 0) {
+            my $cabal = $cabals[0];
+            my $pkg;
+            my $top;
+            if (-f $cabal) {
+                $pkg = $cabal;
+                $pkg =~ s#.*/##;
+                $pkg =~ s/\.cabal.in$//;
+                $pkg =~ s/\.cabal$//;
+                $top = $package;
+                $top =~ s#[^/]+#..#g;
+                $dir = $package;
+                $dir =~ s#^libraries/##g;
+
+                print "Creating $package/ghc.mk\n";
+                open GHCMK, "> $package/ghc.mk"
+                    or die "Opening $package/ghc.mk failed: $!";
+                print GHCMK "${package}_PACKAGE = ${pkg}\n";
+                print GHCMK "${package}_dist-install_GROUP = libraries\n";
+                print GHCMK "\$(if \$(filter ${dir},\$(PACKAGES_STAGE0)),\$(eval \$(call build-package,${package},dist-boot,0)))\n";
+                print GHCMK "\$(if \$(filter ${dir},\$(PACKAGES_STAGE1)),\$(eval \$(call build-package,${package},dist-install,1)))\n";
+                print GHCMK "\$(if \$(filter ${dir},\$(PACKAGES_STAGE2)),\$(eval \$(call build-package,${package},dist-install,2)))\n";
+                close GHCMK
+                    or die "Closing $package/ghc.mk failed: $!";
+
+                print "Creating $package/GNUmakefile\n";
+                open GNUMAKEFILE, "> $package/GNUmakefile"
+                    or die "Opening $package/GNUmakefile failed: $!";
+                print GNUMAKEFILE "dir = ${package}\n";
+                print GNUMAKEFILE "TOP = ${top}\n";
+                print GNUMAKEFILE "include \$(TOP)/mk/sub-makefile.mk\n";
+                print GNUMAKEFILE "FAST_MAKE_OPTS += stage=0\n";
+                close GNUMAKEFILE
+                    or die "Closing $package/GNUmakefile failed: $!";
+            }
+        }
+    }
+}
 
 # autoreconf everything that needs it.
-for dir in . libraries/*
-do
-    if test -f $dir/configure.ac
-    then
-        echo "Booting $dir"
-        ( cd $dir && autoreconf )
-    fi
-done
-
-# Alas, darcs doesn't handle file permissions, so fix a few of them.
-for f in boot darcs-all push-all validate
-do
-    test -f $f && chmod +x $f
-done
+sub autoreconf {
+    my $dir;
+    my $fail;
+
+    foreach $dir (".", glob("libraries/*/")) {
+        if (-f "$dir/configure.ac") {
+            next if (my $pid = fork);
+            die "fork failed: $!" if (! defined $pid);
+            print "Booting $dir\n";
+            chdir $dir or die "can't change to $dir: $!";
+            exec("autoreconf");
+            exit 1;
+        }
+    }
+
+    # Wait for all child processes to finish.
+    while (wait() != -1) {
+        $fail = 1 if $?;
+    }
+
+    die "Running autoreconf failed" if $fail;
+}
+
+sub checkBuildMk {
+    if ($validate eq 0 && ! -f "mk/build.mk") {
+        print <<EOF;
+
+WARNING: You don't have a mk/build.mk file.
+
+By default a standard GHC build will be done, which uses optimisation
+and builds the profiling libraries. This will take a long time, so may
+not be what you want if you are developing GHC or the libraries, rather
+than simply building it to use it.
+
+For information on creating a mk/build.mk file, please see:
+    http://ghc.haskell.org/trac/ghc/wiki/Building/Using#Buildconfiguration
+
+EOF
+    }
+}
+
+&sanity_check_line_endings();
+&sanity_check_tree();
+&boot_pkgs();
+&autoreconf();
+&checkBuildMk();