Merge part of jc/portable branch

Author: Junio C Hamano

Makefile

@@ -55,6 +55,11 @@ all:
 #
 # Define NO_ICONV if your libc does not properly support iconv.
 #
+# Define NO_ACCURATE_DIFF if your diff program at least sometimes misses
+# a missing newline at the end of the file.
+#
+# Define NO_PYTHON if you want to loose all benefits of the recursive merge.
+#
 # Define COLLISION_CHECK below if you believe that SHA1's
 # 1461501637330902918203684832716283019655932542976 hashes do not give you
 # sufficient guarantee that no collisions between objects will ever happen.
@@ -273,6 +278,16 @@ ifeq ($(uname_S),AIX)
 	NO_STRCASESTR=YesPlease
 	NEEDS_LIBICONV=YesPlease
 endif
+ifeq ($(uname_S),IRIX64)
+	NO_IPV6=YesPlease
+	NO_SETENV=YesPlease
+	NO_STRCASESTR=YesPlease
+	NO_SOCKADDR_STORAGE=YesPlease
+	SHELL_PATH=/usr/gnu/bin/bash
+	ALL_CFLAGS += -DPATH_MAX=1024
+	# for now, build 32-bit version
+	ALL_LDFLAGS += -L/usr/lib32
+endif
 ifneq (,$(findstring arm,$(uname_M)))
 	ARM_SHA1 = YesPlease
 endif
@@ -403,6 +418,9 @@ else
 endif
 endif
 endif
+ifdef NO_ACCURATE_DIFF
+	ALL_CFLAGS += -DNO_ACCURATE_DIFF
+endif
 
 ALL_CFLAGS += -DSHA1_HEADER=$(call shellquote,$(SHA1_HEADER)) $(COMPAT_CFLAGS)
 LIB_OBJS += $(COMPAT_OBJS)
@@ -426,6 +444,7 @@ $(patsubst %.sh,%,$(SCRIPT_SH)) : % : %.sh
 	sed -e '1s|#!.*/sh|#!$(call shq,$(SHELL_PATH))|' \
 	    -e 's/@@GIT_VERSION@@/$(GIT_VERSION)/g' \
 	    -e 's/@@NO_CURL@@/$(NO_CURL)/g' \
+	    -e 's/@@NO_PYTHON@@/$(NO_PYTHON)/g' \
 	    $@.sh >$@
 	chmod +x $@
 
@@ -505,6 +524,12 @@ doc:
 
 ### Testing rules
 
+# GNU make supports exporting all variables by "export" without parameters.
+# However, the environment gets quite big, and some programs have problems
+# with that.
+
+export NO_PYTHON
+
 test: all
 	$(MAKE) -C t/ all
 

apply.c

@@ -1142,6 +1142,14 @@ static int apply_one_fragment(struct buffer_desc *desc, struct fragment *frag)
 		size -= len;
 	}
 
+#ifdef NO_ACCURATE_DIFF
+	if (oldsize > 0 && old[oldsize - 1] == '\n' &&
+			newsize > 0 && new[newsize - 1] == '\n') {
+		oldsize--;
+		newsize--;
+	}
+#endif
+			
 	offset = find_offset(buf, desc->size, old, oldsize, frag->newpos);
 	if (offset >= 0) {
 		int diff = newsize - oldsize;

git-clone.sh

@@ -154,7 +154,7 @@ yes,yes)
 	    fi &&
 	    rm -f "$GIT_DIR/objects/sample" &&
 	    cd "$repo" &&
-	    find objects -depth -print | cpio -puamd$l "$GIT_DIR/" || exit 1
+	    find objects -depth -print | cpio -pumd$l "$GIT_DIR/" || exit 1
 	    ;;
 	yes)
 	    mkdir -p "$GIT_DIR/objects/info"

git-merge.sh

@@ -13,6 +13,10 @@ LF='
 all_strategies='recursive octopus resolve stupid ours'
 default_strategies='recursive'
 use_strategies=
+if test "@@NO_PYTHON@@"; then
+	all_strategies='resolve octopus stupid ours'
+	default_strategies='resolve'
+fi
 
 dropsave() {
 	rm -f -- "$GIT_DIR/MERGE_HEAD" "$GIT_DIR/MERGE_MSG" \

t/Makefile

@@ -15,6 +15,10 @@ shellquote = '$(call shq,$(1))'
 
 T = $(wildcard t[0-9][0-9][0-9][0-9]-*.sh)
 
+ifdef NO_PYTHON
+	GIT_TEST_OPTS += --no-python
+endif
+
 all: $(T) clean
 
 $(T):

t/t0000-basic.sh

@@ -42,7 +42,7 @@ fi
 
 . ./test-lib.sh
 
-"$PYTHON" -c 'import subprocess' || {
+test "$no_python" || "$PYTHON" -c 'import subprocess' || {
 	echo >&2 'Your python seem to lack "subprocess" module.
 Please check INSTALL document.'
 	exit 1

t/t6021-merge-criss-cross.sh

@@ -10,6 +10,12 @@
 test_description='Test criss-cross merge'
 . ./test-lib.sh
 
+if test "$no_python"; then
+	echo "Skipping: no python => no recursive merge"
+	test_done
+	exit 0
+fi
+
 test_expect_success 'prepare repository' \
 'echo "1
 2

t/t6022-merge-rename.sh

@@ -3,6 +3,12 @@
 test_description='Merge-recursive merging renames'
 . ./test-lib.sh
 
+if test "$no_python"; then
+	echo "Skipping: no python => no recursive merge"
+	test_done
+	exit 0
+fi
+
 test_expect_success setup \
 '
 cat >A <<\EOF &&

t/test-lib.sh

@@ -63,6 +63,8 @@ do
 		exit 0 ;;
 	-v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
 		verbose=t; shift ;;
+	--no-python)
+		no_python=t; shift ;;
 	*)
 		break ;;
 	esac