Makefile

# only support building in pgxs mode
USE_PGXS = 1
MODULE_big = pg_filedump

# the pgxs makefiles provide some version variables like below:
#
#     MAJORVERSION = 14
#     GP_MAJORVERSION = 4
#
# however we need them before including the makefiles, so we have to guess them
# manually with pg_config
PG_CONFIG_MAJOR_VERSION = \
	$(shell pg_config --version \
	  | egrep --only-matching '[0-9]+(\.[0-9]+)?' \
	  | head -n1)

ifeq ($(PG_CONFIG_MAJOR_VERSION),)
$(error cannot detect gpdb version with pg_config)
endif # PG_CONFIG_MAJOR_VERSION

# cbdb-1.5.x, postgres-14 based
ifeq ($(PG_CONFIG_MAJOR_VERSION),14.4)	
	GPDB_RELEASE = 7
	# pg_control has incompatible formats between gpdb major versions
	REGRESS += gpdb-7_12.12-control
endif # PG_CONFIG_MAJOR_VERSION

ifeq ($(GPDB_RELEASE),)
$(error unsupported cbdb/pg version: $(shell pg_config --version))
endif # GPDB_RELEASE

PG_INCLUDEDIR = $(shell pg_config --includedir)
PG_SERVER_INCLUDEDIR = ${PG_INCLUDEDIR}/postgresql/server

PG_LIBS += -lpostgres
PG_CFLAGS += -I$(PG_INCLUDEDIR) -I$(PG_SERVER_INCLUDEDIR)
PG_LDFLAGS += -I $(shell pg_config --ldflags)

PROGRAM = pg_filedump
PROGNAME = pg_filedump
OBJS	= decode.c pg_filedump.c stringinfo.c

DOCS = README.pg
DOCS += README.md

PKG_CONFIG ?= pkg-config --silence-errors

# auto detect zlib if not explicitly specified
ifndef ENABLE_ZLIB
	ENABLE_ZLIB = $(shell $(PKG_CONFIG) --exists zlib && echo y || echo n)
endif # ENABLE_ZLIB
# try to enable zlib
ifeq ($(ENABLE_ZLIB),y)
	ifeq ($(shell $(PKG_CONFIG) --libs zlib),)
$(error cannot find zlib)
	endif

	PG_CPPFLAGS += -D ENABLE_ZLIB
	PG_CPPFLAGS += $(shell $(PKG_CONFIG) --cflags zlib)
	PG_LIBS += $(shell $(PKG_CONFIG) --libs zlib)
endif # ENABLE_ZLIB

# auto detect libzstd if not explicitly specified
ifndef ENABLE_ZSTD
	ENABLE_ZSTD = $(shell $(PKG_CONFIG) --exists libzstd && echo y || echo n)
endif # ENABLE_ZSTD
# try to enable libzstd
ifeq ($(ENABLE_ZSTD),y)
	ifeq ($(shell $(PKG_CONFIG) --libs libzstd),)
$(error cannot find libzstd)
	endif

	PG_CPPFLAGS += -D ENABLE_ZSTD
	PG_CPPFLAGS += $(shell $(PKG_CONFIG) --cflags libzstd)
	PG_LIBS += $(shell $(PKG_CONFIG) --libs libzstd)
endif # ENABLE_ZSTD

$(info ENABLE_ZLIB: $(ENABLE_ZLIB))
$(info ENABLE_ZSTD: $(ENABLE_ZSTD))

OBJS += gpdb.c
OBJS += mock.c

REGRESS += gpdb-$(GPDB_RELEASE)-common

ifeq ($(ENABLE_ZLIB),y)
	REGRESS += gpdb-$(GPDB_RELEASE)-zlib
endif # ENABLE_ZLIB

ifeq ($(ENABLE_ZSTD),y)
	REGRESS += gpdb-$(GPDB_RELEASE)-zstd
endif # ENABLE_ZSTD

# avoid linking against all libs that the server links against (xml, selinux, ...)
LIBS = $(libpq_pgport)

# add init_file
REGRESS_OPTS = --init-file=$(srcdir)/init_file

PG_CONFIG = pg_config
PGXS := $(shell $(PG_CONFIG) --pgxs)
include $(PGXS)
PGXS_DIR := $(dir $(PGXS))