tree-diff: rework diff_tree() to generate diffs for multiparent cases as well

diff --git a/config.mak.uname b/config.mak.uname
index 7d31fad241761e41de655de6f42ddfb8c87ea4f2..71602ee9a16951bf480e0855352052b5965f0492 100644 (file)
--- a/config.mak.uname
+++ b/config.mak.uname
@@ -28,6 +28,7 @@ ifeq ($(uname_S),OSF1)
        NO_NSEC = YesPlease
 endif
 ifeq ($(uname_S),Linux)
+       HAVE_ALLOCA_H = YesPlease
        NO_STRLCPY = YesPlease
        NO_MKSTEMPS = YesPlease
        HAVE_PATHS_H = YesPlease
@@ -35,6 +36,7 @@ ifeq ($(uname_S),Linux)
        HAVE_DEV_TTY = YesPlease
 endif
 ifeq ($(uname_S),GNU/kFreeBSD)
+       HAVE_ALLOCA_H = YesPlease
        NO_STRLCPY = YesPlease
        NO_MKSTEMPS = YesPlease
        HAVE_PATHS_H = YesPlease
@@ -103,6 +105,7 @@ ifeq ($(uname_S),SunOS)
        NEEDS_NSL = YesPlease
        SHELL_PATH = /bin/bash
        SANE_TOOL_PATH = /usr/xpg6/bin:/usr/xpg4/bin
+       HAVE_ALLOCA_H = YesPlease
        NO_STRCASESTR = YesPlease
        NO_MEMMEM = YesPlease
        NO_MKDTEMP = YesPlease
@@ -146,7 +149,7 @@ ifeq ($(uname_S),SunOS)
        endif
        INSTALL = /usr/ucb/install
        TAR = gtar
-       BASIC_CFLAGS += -D__EXTENSIONS__ -D__sun__ -DHAVE_ALLOCA_H
+       BASIC_CFLAGS += -D__EXTENSIONS__ -D__sun__
 endif
 ifeq ($(uname_O),Cygwin)
        ifeq ($(shell expr "$(uname_R)" : '1\.[1-6]\.'),4)
@@ -166,6 +169,7 @@ ifeq ($(uname_O),Cygwin)
        else
                NO_REGEX = UnfortunatelyYes
        endif
+       HAVE_ALLOCA_H = YesPlease
        NEEDS_LIBICONV = YesPlease
        NO_FAST_WORKING_DIRECTORY = UnfortunatelyYes
        NO_ST_BLOCKS_IN_STRUCT_STAT = YesPlease
@@ -239,6 +243,7 @@ ifeq ($(uname_S),AIX)
 endif
 ifeq ($(uname_S),GNU)
        # GNU/Hurd
+       HAVE_ALLOCA_H = YesPlease
        NO_STRLCPY = YesPlease
        NO_MKSTEMPS = YesPlease
        HAVE_PATHS_H = YesPlease
@@ -316,6 +321,7 @@ endif
 ifeq ($(uname_S),Windows)
        GIT_VERSION := $(GIT_VERSION).MSVC
        pathsep = ;
+       HAVE_ALLOCA_H = YesPlease
        NO_PREAD = YesPlease
        NEEDS_CRYPTO_WITH_SSL = YesPlease
        NO_LIBGEN_H = YesPlease
@@ -363,7 +369,7 @@ ifeq ($(uname_S),Windows)
        COMPAT_OBJS = compat/msvc.o compat/winansi.o \
                compat/win32/pthread.o compat/win32/syslog.o \
                compat/win32/dirent.o
-       COMPAT_CFLAGS = -D__USE_MINGW_ACCESS -DNOGDI -DHAVE_STRING_H -DHAVE_ALLOCA_H -Icompat -Icompat/regex -Icompat/win32 -DSTRIP_EXTENSION=\".exe\"
+       COMPAT_CFLAGS = -D__USE_MINGW_ACCESS -DNOGDI -DHAVE_STRING_H -Icompat -Icompat/regex -Icompat/win32 -DSTRIP_EXTENSION=\".exe\"
        BASIC_LDFLAGS = -IGNORE:4217 -IGNORE:4049 -NOLOGO -SUBSYSTEM:CONSOLE -NODEFAULTLIB:MSVCRT.lib
        EXTLIBS = user32.lib advapi32.lib shell32.lib wininet.lib ws2_32.lib
        PTHREAD_LIBS =