start working on an allplacefinder library

in 'lib' directory there'll be the library
in 'placefinder' directory there'll be a cmd tool (placefinder)

lib/Makefile

@@ -0,0 +1,45 @@
+sourcefiles:=$(shell find . -name "*.cpp")
+objfiles:=$(patsubst %.cpp,%.o,$(sourcefiles))
+
+
+
+ifndef CXX
+CXX = g++
+endif
+
+ifndef CXXFLAGS
+CXXFLAGS = -Wall -pedantic -O2 -std=c++20
+endif
+
+ifndef AR
+AR = ar
+endif
+
+
+
+
+libname = allplacefinder.a
+
+
+all: $(libname)
+
+
+$(libname): $(objfiles)
+	$(AR) rcs $(libname) $(objfiles)
+
+
+%.o: %.cpp
+	$(CXX) -c $(CXXFLAGS) -o $@ $<
+
+
+clean:
+	rm -f $(objfiles)
+	rm -f $(libname)
+
+
+depend:
+	makedepend -Y. -f- $(sourcefiles) > Makefile.dep
+
+
+-include Makefile.dep
+