From 6658af9911170425e918b49b0ebd83ad0d04ad7f Mon Sep 17 00:00:00 2001
From: Mubashshir <ahmubashshir@gmail.com>
Date: Wed, 13 Mar 2024 18:54:36 +0600
Subject: Create makefile

Signed-off-by: Mubashshir <ahmubashshir@gmail.com>
---
 Makefile | 104 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 104 insertions(+)
 create mode 100644 Makefile

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..6a4bf4f
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,104 @@
+# if $CXX is not set, guess default `cxx'. It has to be in system
+CXX ?= cxx
+# compile options
+CXXFLAGS ?= -Os -Wall -Wpedantic -Wextra
+# link options
+LDFLAGS ?= -s
+
+target      ?= debug
+<<targets>> := debug release
+# addons
+with     ?= gmp
+without  ?=
+<<addons>> := gmp
+
+# Echo function
+<< := echo
+ifneq ($(shell eval 'echo -e'),-e)
+	<< += -e
+endif
+
+<<debug-dir>   = Debug
+<<release-dir>>= Release
+<<target>>     = $(firstword $(filter $(<<targets>>),$(target)))
+ifeq ($(<<target>>),release)
+	<<tdir>> = Release
+else
+	<<tdir>> = Debug
+endif
+
+# optional addons
+<<with>>       = $(sort $(filter-out $(without),$(filter $(<<addons>>),$(with))))
+# project configs
+CXXFLAGS += -I$(PWD)/headers -I$(PWD)/
+
+# rebuild on optional deps change
+ifneq ($(filter gmp,$(<<with>>)),)
+	ifneq ($(shell pkg-config --exists gmp gmpxx && echo exists),)
+		PKGS += gmpxx gmp
+		CFLAGS += -D_USE_GMP
+	endif
+endif
+
+ifneq ($(PKGS),)
+	CXXFLAGS += $(shell pkg-config --cflags $(PKGS))
+	LDFLAGS += $(shell pkg-config --libs $(PKGS))
+endif
+
+<<sources>> := \
+	main.cpp \
+	headers/allElements.cpp \
+	headers/readElementState.cpp
+
+
+<<objects>> := $(<<sources>>:%=obj/$(<<tdir>>)/%.o)
+
+# Output file name
+ifeq ($(filter $(shell uname -o),Msys Cygwin),)
+	BINARY ?= entropy-calculator
+else
+	ifeq ($(MSYSTEM_CARCH),i686)
+		BINARY ?= entropy-calculator.exe
+	else
+		BINARY ?= entropy-calculator64.exe
+	endif
+endif
+
+<<bindep>> = bin/$(<<tdir>>)/.$(BINARY).dep
+<<binpth>> = bin/$(<<tdir>>)/$(BINARY)
+<<->> := $(shell mkdir -p $(dir $(<<binpth>>)))
+# Use $(<<bindep>>) file to track backend change
+<<depends>> = $(sort $(<<with>>))
+ifneq ($(sort $(file < $(<<bindep>>))),$(<<depends>>))
+	<<null>> := $(file  > $(<<bindep>>),$(<<depends>>))
+endif
+undefine <<depends>> <<null>> <<->>
+# using some makefile sorcery
+
+all: $(<<binpth>>)
+
+obj/$(<<tdir>>)/%.o: %
+	@$(<<) "  CXX\t" $(<:src/%=%)
+	@mkdir -p $(shell dirname $(@))
+	@$(CXX) -c $(<) -o $(@) $(CXXFLAGS)
+
+$(<<binpth>>): $(<<objects>>)
+	@if test -n "$(<<with>>)"; then $(<<) "WITH\t" $(<<with>>);fi
+	@$(<<) "LINK\t" "$(BINARY)$(^:obj/%=\\n\\t + %)"
+	@$(CXX) $(^) -o $(@) $(LDFLAGS)
+
+install: $(<<binpth>>)
+	install -Dm0755 $(<) $(DESTDIR)$(PREFIX)/$(BINDIR)/$(BINARY)
+
+uninstall:
+	sudo $(RM) -f $(DESTDIR)$(PREFIX)/$(BINDIR)/$(BINARY)
+
+clean:
+	@$(<<) "  RM\t" "$(BINARY)$(<<objects>>:obj/%=\\n\\t + %)"
+	@$(RM) -f $(<<objects>>) $(<<binpth>>) $(<<bindep>>)
+
+test: $(BINARY)
+	./$(BINARY)
+
+$(<<objects>>): $(<<bindep>>)
+.PHONY: all clean install uninstall test
-- 
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