Merge branch 'jk/empty-archive' into maint

diff --git a/Documentation/Makefile b/Documentation/Makefile
index 3c538e3de732f3810e5d18cae5396192b80d3c6c..62dbd9ac7c93e8df4359b00b7c3a59b614bd8d57 100644 (file)
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -1,13 +1,34 @@
-MAN1_TXT= \
-       $(filter-out $(addsuffix .txt, $(ARTICLES) $(SP_ARTICLES)), \
-               $(wildcard git-*.txt)) \
-       gitk.txt gitweb.txt git.txt gitremote-helpers.txt
-MAN5_TXT=gitattributes.txt gitignore.txt gitmodules.txt githooks.txt \
-       gitrepository-layout.txt gitweb.conf.txt
-MAN7_TXT=gitcli.txt gittutorial.txt gittutorial-2.txt \
-       gitcvs-migration.txt gitcore-tutorial.txt gitglossary.txt \
-       gitdiffcore.txt gitnamespaces.txt gitrevisions.txt gitworkflows.txt
+# Guard against environment variables
+MAN1_TXT =
+MAN5_TXT =
+MAN7_TXT =
+
+MAN1_TXT += $(filter-out \
+               $(addsuffix .txt, $(ARTICLES) $(SP_ARTICLES)), \
+               $(wildcard git-*.txt))
+MAN1_TXT += git.txt
+MAN1_TXT += gitk.txt
+MAN1_TXT += gitremote-helpers.txt
+MAN1_TXT += gitweb.txt
+
+MAN5_TXT += gitattributes.txt
+MAN5_TXT += githooks.txt
+MAN5_TXT += gitignore.txt
+MAN5_TXT += gitmodules.txt
+MAN5_TXT += gitrepository-layout.txt
+MAN5_TXT += gitweb.conf.txt
+
+MAN7_TXT += gitcli.txt
+MAN7_TXT += gitcore-tutorial.txt
 MAN7_TXT += gitcredentials.txt
+MAN7_TXT += gitcvs-migration.txt
+MAN7_TXT += gitdiffcore.txt
+MAN7_TXT += gitglossary.txt
+MAN7_TXT += gitnamespaces.txt
+MAN7_TXT += gitrevisions.txt
+MAN7_TXT += gittutorial-2.txt
+MAN7_TXT += gittutorial.txt
+MAN7_TXT += gitworkflows.txt
 
 MAN_TXT = $(MAN1_TXT) $(MAN5_TXT) $(MAN7_TXT)
 MAN_XML=$(patsubst %.txt,%.xml,$(MAN_TXT))
@@ -223,7 +244,11 @@ install-html: html
 #
 # Determine "include::" file references in asciidoc files.
 #
-doc.dep : $(wildcard *.txt) build-docdep.perl
+docdep_prereqs = \
+       mergetools-list.made $(mergetools_txt) \
+       cmd-list.made $(cmds_txt)
+
+doc.dep : $(docdep_prereqs) $(wildcard *.txt) build-docdep.perl
        $(QUIET_GEN)$(RM) $@+ $@ && \
        $(PERL_PATH) ./build-docdep.perl >$@+ $(QUIET_STDERR) && \
        mv $@+ $@
@@ -247,13 +272,27 @@ cmd-list.made: cmd-list.perl ../command-list.txt $(MAN1_TXT)
        $(PERL_PATH) ./cmd-list.perl ../command-list.txt $(QUIET_STDERR) && \
        date >$@
 
+mergetools_txt = mergetools-diff.txt mergetools-merge.txt
+
+$(mergetools_txt): mergetools-list.made
+
+mergetools-list.made: ../git-mergetool--lib.sh $(wildcard ../mergetools/*)
+       $(QUIET_GEN)$(RM) $@ && \
+       $(SHELL_PATH) -c 'MERGE_TOOLS_DIR=../mergetools && \
+               . ../git-mergetool--lib.sh && \
+               show_tool_names can_diff "* " || :' >mergetools-diff.txt && \
+       $(SHELL_PATH) -c 'MERGE_TOOLS_DIR=../mergetools && \
+               . ../git-mergetool--lib.sh && \
+               show_tool_names can_merge "* " || :' >mergetools-merge.txt && \
+       date >$@
+
 clean:
        $(RM) *.xml *.xml+ *.html *.html+ *.1 *.5 *.7
        $(RM) *.texi *.texi+ *.texi++ git.info gitman.info
        $(RM) *.pdf
        $(RM) howto-index.txt howto/*.html doc.dep
        $(RM) technical/*.html technical/api-index.txt
-       $(RM) $(cmds_txt) *.made
+       $(RM) $(cmds_txt) $(mergetools_txt) *.made
        $(RM) manpage-base-url.xsl
 
 $(MAN_HTML): %.html : %.txt asciidoc.conf
@@ -353,8 +392,8 @@ $(patsubst %.txt,%.html,$(wildcard howto/*.txt)): %.html : %.txt
 install-webdoc : html
        '$(SHELL_PATH_SQ)' ./install-webdoc.sh $(WEBDOC_DEST)
 
-# You must have a clone of git-htmldocs and git-manpages repositories
-# next to the git repository itself for the following to work.
+# You must have a clone of 'git-htmldocs' and 'git-manpages' repositories
+# next to the 'git' repository itself for the following to work.
 
 quick-install: quick-install-man