reset.c: extract function for updating {ORIG_,}HEAD

diff --git a/Makefile b/Makefile
index 8e225cad7d510a1e113228cc9a2fdd47fad54a95..cd0664accb3c862354042de3b719b2ab925cd053 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -2221,7 +2221,7 @@ endef
 GIT-SCRIPT-DEFINES: FORCE
        @FLAGS='$(SCRIPT_DEFINES)'; \
            if test x"$$FLAGS" != x"`cat $@ 2>/dev/null`" ; then \
-               echo 1>&2 "    * new script parameters"; \
+               echo >&2 "    * new script parameters"; \
                echo "$$FLAGS" >$@; \
             fi
 
@@ -2283,7 +2283,7 @@ $(patsubst %.perl,%,$(SCRIPT_PERL)) git-instaweb: % : unimplemented.sh
 endif # NO_PERL
 
 ifndef NO_PYTHON
-$(patsubst %.py,%,$(SCRIPT_PYTHON)): GIT-CFLAGS GIT-PREFIX
+$(patsubst %.py,%,$(SCRIPT_PYTHON)): GIT-CFLAGS GIT-PREFIX GIT-PYTHON-VARS
 $(patsubst %.py,%,$(SCRIPT_PYTHON)): % : %.py
        $(QUIET_GEN)$(RM) $@ $@+ && \
        INSTLIBDIR=`MAKEFLAGS= $(MAKE) -C git_remote_helpers -s \
@@ -2313,8 +2313,14 @@ 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; \
@@ -2602,7 +2608,7 @@ TRACK_PREFIX = $(bindir_SQ):$(gitexecdir_SQ):$(template_dir_SQ):$(prefix_SQ):\
 GIT-PREFIX: FORCE
        @FLAGS='$(TRACK_PREFIX)'; \
        if test x"$$FLAGS" != x"`cat GIT-PREFIX 2>/dev/null`" ; then \
-               echo 1>&2 "    * new prefix flags"; \
+               echo >&2 "    * new prefix flags"; \
                echo "$$FLAGS" >GIT-PREFIX; \
        fi
 
@@ -2611,7 +2617,7 @@ TRACK_CFLAGS = $(CC):$(subst ','\'',$(ALL_CFLAGS)):$(USE_GETTEXT_SCHEME)
 GIT-CFLAGS: FORCE
        @FLAGS='$(TRACK_CFLAGS)'; \
            if test x"$$FLAGS" != x"`cat GIT-CFLAGS 2>/dev/null`" ; then \
-               echo 1>&2 "    * new build flags"; \
+               echo >&2 "    * new build flags"; \
                echo "$$FLAGS" >GIT-CFLAGS; \
             fi
 
@@ -2620,7 +2626,7 @@ TRACK_LDFLAGS = $(subst ','\'',$(ALL_LDFLAGS))
 GIT-LDFLAGS: FORCE
        @FLAGS='$(TRACK_LDFLAGS)'; \
            if test x"$$FLAGS" != x"`cat GIT-LDFLAGS 2>/dev/null`" ; then \
-               echo 1>&2 "    * new link flags"; \
+               echo >&2 "    * new link flags"; \
                echo "$$FLAGS" >GIT-LDFLAGS; \
             fi
 
@@ -2662,14 +2668,14 @@ ifdef GIT_PERF_MAKE_OPTS
        @echo GIT_PERF_MAKE_OPTS=\''$(subst ','\'',$(subst ','\'',$(GIT_PERF_MAKE_OPTS)))'\' >>$@
 endif
 
-### Detect Tck/Tk interpreter path changes
-ifndef NO_TCLTK
-TRACK_VARS = $(subst ','\'',-DTCLTK_PATH='$(TCLTK_PATH_SQ)')
+### Detect Python interpreter path changes
+ifndef NO_PYTHON
+TRACK_PYTHON = $(subst ','\'',-DPYTHON_PATH='$(PYTHON_PATH_SQ)')
 
-GIT-GUI-VARS: FORCE
-       @VARS='$(TRACK_VARS)'; \
+GIT-PYTHON-VARS: FORCE
+       @VARS='$(TRACK_PYTHON)'; \
            if test x"$$VARS" != x"`cat $@ 2>/dev/null`" ; then \
-               echo 1>&2 "    * new Tcl/Tk interpreter location"; \
+               echo >&2 "    * new Python interpreter location"; \
                echo "$$VARS" >$@; \
             fi
 endif
@@ -2948,8 +2954,8 @@ ifndef NO_TCLTK
        $(MAKE) -C gitk-git clean
        $(MAKE) -C git-gui clean
 endif
-       $(RM) GIT-VERSION-FILE GIT-CFLAGS GIT-LDFLAGS GIT-GUI-VARS GIT-BUILD-OPTIONS
-       $(RM) GIT-USER-AGENT GIT-PREFIX GIT-SCRIPT-DEFINES
+       $(RM) GIT-VERSION-FILE GIT-CFLAGS GIT-LDFLAGS GIT-BUILD-OPTIONS
+       $(RM) GIT-USER-AGENT GIT-PREFIX GIT-SCRIPT-DEFINES GIT-PYTHON-VARS
 
 .PHONY: all install profile-clean clean strip
 .PHONY: shell_compatibility_test please_set_SHELL_PATH_to_a_more_modern_shell