# SPDX-License-Identifier: MIT


CXXVER := $(shell $(CXX) --version)
ifneq "$(findstring clang,$(CXXVER))" ""
	# GCC doesn't have this granularity
	CXXSPECIFIC := -flto=full -pedantic -Wno-gnu-statement-expression -Wno-gnu-include-next -Wno-gnu-conditional-omitted-operand -Wno-c++20-designator
	ifeq "$(AR)" "ar"
		# Need this because -flto=full produces objects FSF ranlib (ar s) can't index
		override AR := llvm-ar
	endif
else
	CXXSPECIFIC := -flto
endif


ifneq "$(ADDITIONAL_INCLUDE_DIR)" ""
	INCCXXAR := -isystem$(ADDITIONAL_INCLUDE_DIR)
else
	INCCXXAR :=
endif

ifneq "$(ADDITIONAL_LINK_DIR)" ""
	LNCXXAR := -L$(ADDITIONAL_LINK_DIR)
else
	LNCXXAR :=
endif

TZPFMS_VERSION ?= "$(patsubst v%,%,$(shell git describe))"
TZPFMS_DATE ?= $(shell date -d@$$(git log --no-show-signature -1 --pretty=%at) '+%B %e, %Y')

SYSTEMD_SYSTEM_UNITDIR := $(shell ssud="$$(pkg-config --variable=systemd_system_unit_dir systemd 2>/dev/null)"; echo "$${ssud:-/usr/lib/systemd/system}")

INCCMAKEAR := CXXFLAGS="$(INCCXXAR)"
LNCMAKEAR := LDFLAGS="$(LNCXXAR)"

AWK ?= awk
SED ?= sed
MANDOC ?= mandoc
SHELLCHECK ?= shellcheck
CXXAR := -g -O3 -std=c++17 -fno-exceptions -Wall -Wextra $(CXXSPECIFIC) -pipe $(INCCXXAR) -fPIC

OUTDIR := out/
BLDDIR := out/build/
OBJDIR := $(BLDDIR)obj/
SRCDIR := src/
MANDIR := man/
INITRDDIR := initrd/