core.prefersymlinkrefs: use symlinks for .git/HEAD

[git.git] / Makefile

diff --git a/Makefile b/Makefile
index 1130af4..cb6bb72 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -28,8 +28,8 @@ all:
 #
 # Define NO_SETENV if you don't have setenv in the C library.
 #
-# Define USE_SYMLINK_HEAD if you want .git/HEAD to be a symbolic link.
-# Don't enable it on Windows.
+# Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
+# Enable it on Windows.  By default, symrefs are still used.
 #
 # Define PPC_SHA1 environment variable when running make to make use of
 # a bundled SHA1 routine optimized for PowerPC.
@@ -199,7 +199,7 @@ LIB_H = \
        tree-walk.h log-tree.h
 
 DIFF_OBJS = \
-       diff.o diffcore-break.o diffcore-order.o \
+       diff.o diff-lib.o diffcore-break.o diffcore-order.o \
        diffcore-pickaxe.o diffcore-rename.o tree-diff.o combine-diff.o \
        diffcore-delta.o log-tree.o
 
@@ -213,6 +213,9 @@ LIB_OBJS = \
        fetch-clone.o revision.o pager.o tree-walk.o xdiff-interface.o \
        $(DIFF_OBJS)
 
+BUILTIN_OBJS = \
+       builtin-log.o builtin-help.o
+
 GITLIBS = $(LIB_FILE) $(XDIFF_LIB)
 LIBS = $(GITLIBS) -lz
 
@@ -260,6 +263,7 @@ ifeq ($(uname_O),Cygwin)
        NO_D_TYPE_IN_DIRENT = YesPlease
        NO_D_INO_IN_DIRENT = YesPlease
        NO_STRCASESTR = YesPlease
+       NO_SYMLINK_HEAD = YesPlease
        NEEDS_LIBICONV = YesPlease
        # There are conflicting reports about this.
        # On some boxes NO_MMAP is needed, and not so elsewhere.
@@ -383,6 +387,9 @@ endif
 ifdef NO_D_INO_IN_DIRENT
        ALL_CFLAGS += -DNO_D_INO_IN_DIRENT
 endif
+ifdef NO_SYMLINK_HEAD
+       ALL_CFLAGS += -DNO_SYMLINK_HEAD
+endif
 ifdef NO_STRCASESTR
        COMPAT_CFLAGS += -DNO_STRCASESTR
        COMPAT_OBJS += compat/strcasestr.o
@@ -462,10 +469,12 @@ all:
 strip: $(PROGRAMS) git$X
        $(STRIP) $(STRIP_OPTS) $(PROGRAMS) git$X
 
-git$X: git.c common-cmds.h $(GITLIBS)
+git$X: git.c common-cmds.h $(BUILTIN_OBJS) $(GITLIBS)
        $(CC) -DGIT_VERSION='"$(GIT_VERSION)"' \
                $(ALL_CFLAGS) -o $@ $(filter %.c,$^) \
-               $(ALL_LDFLAGS) $(LIBS)
+               $(BUILTIN_OBJS) $(ALL_LDFLAGS) $(LIBS)
+
+builtin-help.o: common-cmds.h
 
 $(BUILT_INS): git$X
        rm -f $@ && ln git$X $@
@@ -565,17 +574,17 @@ init-db.o: init-db.c
        $(CC) -c $(ALL_CFLAGS) \
                -DDEFAULT_GIT_TEMPLATE_DIR='"$(template_dir_SQ)"' $*.c
 
-$(LIB_OBJS): $(LIB_H)
+$(LIB_OBJS) $(BUILTIN_OBJS): $(LIB_H)
 $(patsubst git-%$X,%.o,$(PROGRAMS)): $(GITLIBS)
 $(DIFF_OBJS): diffcore.h
 
 $(LIB_FILE): $(LIB_OBJS)
-       $(AR) rcs $@ $(LIB_OBJS)
+       rm -f $@ && $(AR) rcs $@ $(LIB_OBJS)
 
 XDIFF_OBJS=xdiff/xdiffi.o xdiff/xprepare.o xdiff/xutils.o xdiff/xemit.o
 
 $(XDIFF_LIB): $(XDIFF_OBJS)
-       $(AR) rcs $@ $(XDIFF_OBJS)
+       rm -f $@ && $(AR) rcs $@ $(XDIFF_OBJS)
 
 
 doc:
@@ -653,7 +662,7 @@ rpm: dist
 clean:
        rm -f *.o mozilla-sha1/*.o arm/*.o ppc/*.o compat/*.o xdiff/*.o \
                $(LIB_FILE) $(XDIFF_LIB)
-       rm -f $(ALL_PROGRAMS) git$X
+       rm -f $(ALL_PROGRAMS) $(BUILT_INS) git$X
        rm -f *.spec *.pyc *.pyo */*.pyc */*.pyo common-cmds.h TAGS tags
        rm -rf $(GIT_TARNAME)
        rm -f $(GIT_TARNAME).tar.gz git-core_$(GIT_VERSION)-*.tar.gz
@@ -671,7 +680,6 @@ check-docs::
        @for v in $(ALL_PROGRAMS) $(BUILT_INS) git$X gitk; \
        do \
                case "$$v" in \
-               git-annotate | git-blame | \
                git-merge-octopus | git-merge-ours | git-merge-recursive | \
                git-merge-resolve | git-merge-stupid | \
                git-ssh-pull | git-ssh-push ) continue ;; \