# Makefile.global for storage_engine
# Portable replacement for the autoconf-generated Makefile.global.
# No ./configure needed — uses PG_CONFIG from PATH or environment.
#
# Override pg_config if needed:
#   PG_CONFIG=/usr/lib/postgresql/17/bin/pg_config sudo make install

PG_CONFIG ?= pg_config

citus_abs_top_srcdir := $(abspath $(citus_top_builddir))
citus_abs_srcdir     := $(citus_abs_top_srcdir)/$(citus_subdir)

PGXS := $(shell $(PG_CONFIG) --pgxs)

vpath_build      := no
citus_top_srcdir := $(citus_top_builddir)

USE_PGXS = 1
include $(PGXS)

override CPPFLAGS := -I'$(citus_abs_top_srcdir)/src/include' $(CPPFLAGS)
override CFLAGS  += -Wno-declaration-after-statement

# ---------------------------------------------------------------------------
# Optional compression libraries — all are detected at build time.
# The extension always falls back to pglz (built into PostgreSQL) if none
# are installed.  Recommended: at minimum lz4 + zstd for production use.
# ---------------------------------------------------------------------------

# LZ4 — fast compression, excellent decompression throughput (~500 MB/s)
# Ubuntu/Debian: sudo apt install liblz4-dev
# RHEL/Fedora:   sudo dnf install lz4-devel
ifneq (,$(wildcard /usr/include/lz4.h))
  override CPPFLAGS += -DHAVE_LIBLZ4=1
  SHLIB_LINK += -llz4
endif

# ZSTD — best ratio + good speed; strongly recommended for colcompress
# Ubuntu/Debian: sudo apt install libzstd-dev
# RHEL/Fedora:   sudo dnf install libzstd-devel
ifneq (,$(wildcard /usr/include/zstd.h))
  override CPPFLAGS += -DHAVE_LIBZSTD=1
  SHLIB_LINK += -lzstd
endif

# libdeflate — zlib-compatible, faster than zlib; good middle ground
# Ubuntu/Debian: sudo apt install libdeflate-dev
# RHEL/Fedora:   sudo dnf install libdeflate-devel
ifneq (,$(wildcard /usr/include/libdeflate.h))
  override CPPFLAGS += -DHAVE_LIBDEFLATE=1
  SHLIB_LINK += -ldeflate
endif

# ZXC — asymmetric codec (slow compress, very fast decompress); ideal on ARM64
# Not yet in apt — build from https://github.com/hellobertrand/zxc/releases
#   cmake -B build -DBUILD_SHARED_LIBS=ON -DCMAKE_BUILD_TYPE=Release
#   sudo cmake --install build
ifneq (,$(wildcard /usr/local/include/zxc.h))
  override CPPFLAGS += -DHAVE_LIBZXC=1
  SHLIB_LINK += -lzxc
endif