[PBCKP-232] Remove PG-9.5-9.6 support (postgrespro#523)

* removed support for older versions of postgres (9.5, 9.6)
* removed obsolete options (--master-db, --master-host, --master-port, --master-user, --replica-timeout)

Author: kulaginm

Makefile

@@ -17,21 +17,17 @@
 # git clone https://github.com/postgrespro/pg_probackup postgresql/contrib/pg_probackup
 # cd postgresql
 # ./configure ... && make
-# make --no-print-directory -C contrib/pg_probackup
+# make -C contrib/pg_probackup
 #
 # 4. out of PG source and without PGXS
 # git clone https://git.postgresql.org/git/postgresql.git postgresql-src
 # git clone https://github.com/postgrespro/pg_probackup postgresql-src/contrib/pg_probackup
 # mkdir postgresql-build && cd postgresql-build
 # ../postgresql-src/configure ... && make
-# make --no-print-directory -C contrib/pg_probackup
+# make -C contrib/pg_probackup
 #
 top_pbk_srcdir := $(dir $(realpath $(firstword $(MAKEFILE_LIST))))
 
-# get postgres version
-PG_MAJORVER != $(MAKE) USE_PGXS=$(USE_PGXS) PG_CONFIG=$(PG_CONFIG) --silent --makefile=$(top_pbk_srcdir)get_pg_version.mk
-#$(info Making with PG_MAJORVER=$(PG_MAJORVER))
-
 PROGRAM := pg_backup
 
 # pg_probackup sources
@@ -46,18 +42,14 @@ OBJS += src/archive.o src/backup.o src/catalog.o src/checkdb.o src/configure.o s
 BORROWED_H_SRC := \
 	src/include/portability/instr_time.h \
 	src/bin/pg_basebackup/receivelog.h \
-	src/bin/pg_basebackup/streamutil.h
+	src/bin/pg_basebackup/streamutil.h \
+	src/bin/pg_basebackup/walmethods.h
 BORROWED_C_SRC := \
 	src/backend/access/transam/xlogreader.c \
 	src/backend/utils/hash/pg_crc.c \
 	src/bin/pg_basebackup/receivelog.c \
-	src/bin/pg_basebackup/streamutil.c
-ifneq ($(PG_MAJORVER), $(findstring $(PG_MAJORVER), 9.5 9.6))
-BORROWED_H_SRC += \
-	src/bin/pg_basebackup/walmethods.h
-BORROWED_C_SRC += \
+	src/bin/pg_basebackup/streamutil.c \
 	src/bin/pg_basebackup/walmethods.c
-endif
 
 BORROW_DIR := src/borrowed
 BORROWED_H := $(addprefix $(BORROW_DIR)/, $(notdir $(BORROWED_H_SRC)))
@@ -83,9 +75,6 @@ include $(top_builddir)/src/Makefile.global
 include $(top_srcdir)/contrib/contrib-global.mk
 endif
 
-# now we can use standard MAJORVERSION variable instead of calculated PG_MAJORVER
-undefine PG_MAJORVER
-
 #
 PG_CPPFLAGS = -I$(libpq_srcdir) ${PTHREAD_CFLAGS} -I$(top_pbk_srcdir)/src -I$(BORROW_DIR)
 ifdef VPATH
@@ -97,11 +86,8 @@ PG_LIBS_INTERNAL = $(libpq_pgport) ${PTHREAD_CFLAGS}
 # additional dependencies on borrowed files
 src/archive.o: $(BORROW_DIR)/instr_time.h
 src/backup.o src/catchup.o src/pg_probackup.o: $(BORROW_DIR)/streamutil.h
-src/stream.o $(BORROW_DIR)/receivelog.o $(BORROW_DIR)/streamutil.o: $(BORROW_DIR)/receivelog.h
-ifneq ($(MAJORVERSION), $(findstring $(MAJORVERSION), 9.5 9.6))
+src/stream.o $(BORROW_DIR)/receivelog.o $(BORROW_DIR)/streamutil.o $(BORROW_DIR)/walmethods.o: $(BORROW_DIR)/receivelog.h
 $(BORROW_DIR)/receivelog.h: $(BORROW_DIR)/walmethods.h
-$(BORROW_DIR)/walmethods.o: $(BORROW_DIR)/receivelog.h
-endif
 
 # generate separate makefile to handle borrowed files
 borrowed.mk: $(firstword $(MAKEFILE_LIST))

README.md

@@ -3,7 +3,7 @@
 `pg_backup` is a utility to manage backup and recovery of PostgreSQL database clusters. It is designed to perform periodic backups of the PostgreSQL instance that enable you to restore the server in case of a failure.
 
 The utility is compatible with:
-* PostgreSQL 9.6, 10, 11, 12, 13, 14, 15;
+* PostgreSQL 10, 11, 12, 13, 14, 15;
 
 As compared to other backup solutions, `pg_backup` offers the following benefits that can help you implement different backup strategies and deal with large amounts of data:
 * Incremental backup: page-level incremental backup allows you to save disk space, speed up backup and restore. With three different incremental modes, you can plan the backup strategy in accordance with your data flow.