Merge branch 'jn/auto-depend-workaround-buggy-ccache' into maint

diff --git a/Makefile b/Makefile
index 736ecd45b58da32575cc20019d41a2b178843a09..4bb3cf13673249d893b450352a27e70f837aa7b8 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -273,6 +273,10 @@ all::
 #
 # Define NO_REGEX if you have no or inferior regex support in your C library.
 #
+# Define CYGWIN_V15_WIN32API if you are using Cygwin v1.7.x but are not
+# using the current w32api packages. The recommended approach, however,
+# is to update your installation if compilation errors occur.
+#
 # Define HAVE_DEV_TTY if your system can open /dev/tty to interact with the
 # user.
 #
@@ -649,7 +653,7 @@ LIB_H += list-objects.h
 LIB_H += ll-merge.h
 LIB_H += log-tree.h
 LIB_H += mailmap.h
-LIB_H += merge-file.h
+LIB_H += merge-blobs.h
 LIB_H += merge-recursive.h
 LIB_H += mergesort.h
 LIB_H += notes-cache.h
@@ -765,7 +769,7 @@ LIB_OBJS += log-tree.o
 LIB_OBJS += mailmap.o
 LIB_OBJS += match-trees.o
 LIB_OBJS += merge.o
-LIB_OBJS += merge-file.o
+LIB_OBJS += merge-blobs.o
 LIB_OBJS += merge-recursive.o
 LIB_OBJS += mergesort.o
 LIB_OBJS += name-hash.o
@@ -1471,7 +1475,8 @@ endif
 
 ifeq ($(COMPUTE_HEADER_DEPENDENCIES),auto)
 dep_check = $(shell $(CC) $(ALL_CFLAGS) \
-       -c -MF /dev/null -MMD -MP -x c /dev/null -o /dev/null 2>&1; \
+       -c -MF /dev/null -MQ /dev/null -MMD -MP \
+       -x c /dev/null -o /dev/null 2>&1; \
        echo $$?)
 ifeq ($(dep_check),0)
 override COMPUTE_HEADER_DEPENDENCIES = yes
@@ -2245,7 +2250,7 @@ $(patsubst %.perl,%,$(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 \
@@ -2275,8 +2280,14 @@ 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; \
@@ -2319,7 +2330,7 @@ $(dep_dirs):
 
 missing_dep_dirs := $(filter-out $(wildcard $(dep_dirs)),$(dep_dirs))
 dep_file = $(dir $@).depend/$(notdir $@).d
-dep_args = -MF $(dep_file) -MMD -MP
+dep_args = -MF $(dep_file) -MQ $@ -MMD -MP
 ifdef CHECK_HEADER_DEPENDENCIES
 $(error cannot compute header dependencies outside a normal build. \
 Please unset CHECK_HEADER_DEPENDENCIES and try again)
@@ -2636,6 +2647,18 @@ GIT-GUI-VARS: FORCE
             fi
 endif
 
+### Detect Python interpreter path changes
+ifndef NO_PYTHON
+TRACK_PYTHON = $(subst ','\'',-DPYTHON_PATH='$(PYTHON_PATH_SQ)')
+
+GIT-PYTHON-VARS: FORCE
+       @VARS='$(TRACK_PYTHON)'; \
+           if test x"$$VARS" != x"`cat $@ 2>/dev/null`" ; then \
+               echo 1>&2 "    * new Python interpreter location"; \
+               echo "$$VARS" >$@; \
+            fi
+endif
+
 test_bindir_programs := $(patsubst %,bin-wrappers/%,$(BINDIR_PROGRAMS_NEED_X) $(BINDIR_PROGRAMS_NO_X) $(TEST_PROGRAMS_NEED_X))
 
 all:: $(TEST_PROGRAMS) $(test_bindir_programs)
@@ -2911,7 +2934,7 @@ ifndef NO_TCLTK
        $(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-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