gitweb: fill in gitweb configuration by Makefile

Generate gitweb/gitweb.cgi to reduce the need to patch gitweb.cgi
by the end user.  The GIT installation directory is already known
by the Makefile, and can be inserted directly into gitweb.
All other gitweb configuration parameters can now be specified by
providing GITWEB_* variables while building GIT.  These are described
in gitweb/README.

Signed-off-by: Martin Waitz <tali@admingilde.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>

Makefile

@@ -116,6 +116,13 @@ template_dir = $(prefix)/share/git-core/templates/
 GIT_PYTHON_DIR = $(prefix)/share/git-core/python
 # DESTDIR=
 
+# default configuration for gitweb
+GITWEB_SITENAME =
+GITWEB_PROJECTROOT = /pub/git
+GITWEB_LIST =
+GITWEB_HOMETEXT = indextext.html
+GITWEB_CSS = gitweb.css
+
 export prefix bindir gitexecdir template_dir GIT_PYTHON_DIR
 
 CC = gcc
@@ -514,7 +521,7 @@ LIB_OBJS += $(COMPAT_OBJS)
 export prefix TAR INSTALL DESTDIR SHELL_PATH template_dir
 ### Build rules
 
-all: $(ALL_PROGRAMS) $(BUILT_INS) git$X gitk
+all: $(ALL_PROGRAMS) $(BUILT_INS) git$X gitk gitweb/gitweb.cgi
 
 all:
 	$(MAKE) -C templates
@@ -572,6 +579,20 @@ git-status: git-commit
 	cp $< $@+
 	mv $@+ $@
 
+gitweb/gitweb.cgi: gitweb/gitweb.perl
+	rm -f $@ $@+
+	sed -e '1s|#!.*perl|#!$(PERL_PATH_SQ)|' \
+	    -e 's|@@GIT_VERSION@@|$(GIT_VERSION)|g' \
+	    -e 's|@@GIT_BINDIR@@|$(bindir)|g' \
+	    -e 's|@@GITWEB_SITENAME@@|$(GITWEB_SITENAME)|g' \
+	    -e 's|@@GITWEB_PROJECTROOT@@|$(GITWEB_PROJECTROOT)|g' \
+	    -e 's|@@GITWEB_LIST@@|$(GITWEB_LIST)|g' \
+	    -e 's|@@GITWEB_HOMETEXT@@|$(GITWEB_HOMETEXT)|g' \
+	    -e 's|@@GITWEB_CSS@@|$(GITWEB_CSS)|g' \
+	    $< >$@+
+	chmod +x $@+
+	mv $@+ $@
+
 git-instaweb: git-instaweb.sh gitweb/gitweb.cgi gitweb/gitweb.css
 	rm -f $@ $@+
 	sed -e '1s|#!.*/sh|#!$(SHELL_PATH_SQ)|' \
@@ -582,7 +603,7 @@ git-instaweb: git-instaweb.sh gitweb/gitweb.cgi gitweb/gitweb.css
 	    -e '/@@GITWEB_CGI@@/d' \
 	    -e '/@@GITWEB_CSS@@/r gitweb/gitweb.css' \
 	    -e '/@@GITWEB_CSS@@/d' \
-	    $@.sh | sed "s|/usr/bin/git|$(bindir)/git|" > $@+
+	    $@.sh > $@+
 	chmod +x $@+
 	mv $@+ $@
 

gitweb/README

@@ -5,5 +5,22 @@ The one working on:
 
 From the git version 1.4.0 gitweb is bundled with git.
 
+
+How to configure gitweb for your local system:
+
+You can specify the following configuration variables when building GIT:
+ * GITWEB_SITENAME
+   Shown in the title of all generated pages, defaults to the servers name.
+ * GITWEB_PROJECTROOT
+   The root directory for all projects shown by gitweb.
+ * GITWEB_LIST
+   points to a directory to scan for projects (defaults to project root)
+   or to a file for explicit listing of projects.
+ * GITWEB_HOMETEXT
+   points to an .html file which is included on the gitweb project
+   overview page.
+ * GITWEB_CSS
+   Points to the location where you put gitweb.css on your web server.
+
 Any comment/question/concern to:
   Kay Sievers <kay.sievers@vrfy.org>

gitweb/gitweb.perl

@@ -18,18 +18,18 @@ use File::Find qw();
 binmode STDOUT, ':utf8';
 
 our $cgi = new CGI;
-our $version = "267";
+our $version = "@@GIT_VERSION@@";
 our $my_url = $cgi->url();
 our $my_uri = $cgi->url(-absolute => 1);
 our $rss_link = "";
 
 # core git executable to use
 # this can just be "git" if your webserver has a sensible PATH
-our $GIT = "/usr/bin/git";
+our $GIT = "@@GIT_BINDIR@@/git";
 
 # absolute fs-path which will be prepended to the project path
 #our $projectroot = "/pub/scm";
-our $projectroot = "/home/kay/public_html/pub/scm";
+our $projectroot = "@@GITWEB_PROJECTROOT@@";
 
 # version of the core git binary
 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
@@ -45,17 +45,16 @@ our $home_link = $my_uri;
 
 # name of your site or organization to appear in page titles
 # replace this with something more descriptive for clearer bookmarks
-our $site_name = $ENV{'SERVER_NAME'} || "Untitled";
+our $site_name = "@@GITWEB_SITENAME@@" || $ENV{'SERVER_NAME'} || "Untitled";
 
 # html text to include at home page
-our $home_text = "indextext.html";
+our $home_text = "@@GITWEB_HOMETEXT@@";
 
 # URI of default stylesheet
-our $stylesheet = "gitweb.css";
+our $stylesheet = "@@GITWEB_CSS@@";
 
 # source of projects list
-#our $projects_list = $projectroot;
-our $projects_list = "index/index.aux";
+our $projects_list = "@@GITWEB_LIST@@" || "$projectroot";
 
 # default blob_plain mimetype and default charset for text/plain blob
 our $default_blob_plain_mimetype = 'text/plain';