build: do not automatically reconfigure unless configure.ac changed

diff --git a/Makefile b/Makefile
index 6b0c961d3acd6eb476c979e51f32a258e15c743d..8dc2dbc2eeae18b67a5af5322e5c86c8bb102c18 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -496,6 +496,7 @@ TEST_PROGRAMS_NEED_X += test-mergesort
 TEST_PROGRAMS_NEED_X += test-mktemp
 TEST_PROGRAMS_NEED_X += test-parse-options
 TEST_PROGRAMS_NEED_X += test-path-utils
+TEST_PROGRAMS_NEED_X += test-regex
 TEST_PROGRAMS_NEED_X += test-revision-walking
 TEST_PROGRAMS_NEED_X += test-run-command
 TEST_PROGRAMS_NEED_X += test-scrap-cache-tree
@@ -2166,8 +2167,14 @@ configure: configure.ac GIT-VERSION-FILE
        $(RM) $<+
 
 ifdef AUTOCONFIGURED
-config.status: configure
-       $(QUIET_GEN)if test -f config.status; then \
+# We avoid depending on 'configure' here, because it gets rebuilt
+# every time GIT-VERSION-FILE is modified, only to update the embedded
+# version number string, which config.status does not care about.  We
+# do want to recheck when the platform/environment detection logic
+# changes, hence this depends on configure.ac.
+config.status: configure.ac
+       $(QUIET_GEN)$(MAKE) configure && \
+       if test -f config.status; then \
          ./config.status --recheck; \
        else \
          ./configure; \
@@ -2805,8 +2812,13 @@ endif
 
 ### Check documentation
 #
+ALL_COMMANDS = $(ALL_PROGRAMS) $(SCRIPT_LIB) $(BUILT_INS)
+ALL_COMMANDS += git
+ALL_COMMANDS += gitk
+ALL_COMMANDS += gitweb
+ALL_COMMANDS += git-gui git-citool
 check-docs::
-       @(for v in $(ALL_PROGRAMS) $(SCRIPT_LIB) $(BUILT_INS) git gitk; \
+       @(for v in $(ALL_COMMANDS); \
        do \
                case "$$v" in \
                git-merge-octopus | git-merge-ours | git-merge-recursive | \
@@ -2828,35 +2840,13 @@ check-docs::
                sed -e '/^#/d' \
                    -e 's/[     ].*//' \
                    -e 's/^/listed /' command-list.txt; \
-               ls -1 Documentation/git*txt | \
+               $(MAKE) -C Documentation print-man1 | \
+               grep '\.txt$$' | \
                sed -e 's|Documentation/|documented |' \
                    -e 's/\.txt//'; \
        ) | while read how cmd; \
        do \
-               case "$$how,$$cmd" in \
-               *,git-citool | \
-               *,git-gui | \
-               *,git-help | \
-               documented,gitattributes | \
-               documented,gitignore | \
-               documented,gitmodules | \
-               documented,gitcli | \
-               documented,git-tools | \
-               documented,gitcore-tutorial | \
-               documented,gitcvs-migration | \
-               documented,gitdiffcore | \
-               documented,gitglossary | \
-               documented,githooks | \
-               documented,gitrepository-layout | \
-               documented,gitrevisions | \
-               documented,gittutorial | \
-               documented,gittutorial-2 | \
-               documented,git-bisect-lk2009 | \
-               documented,git-remote-helpers | \
-               documented,gitworkflows | \
-               sentinel,not,matching,is,ok ) continue ;; \
-               esac; \
-               case " $(ALL_PROGRAMS) $(SCRIPT_LIB) $(BUILT_INS) git gitk " in \
+               case " $(ALL_COMMANDS) " in \
                *" $$cmd "*)    ;; \
                *) echo "removed but $$how: $$cmd" ;; \
                esac; \