diff --git a/makefile.unix b/makefile.unix
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--- /dev/null
+++ b/makefile.unix
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+# MAKEFILE that is intended to be compatible with any kind of make (GNU make, BSD make, ...)
+# works on: Linux, *BSD, Cygwin, AIX, HP-UX and hopefully other UNIX systems
+#
+# Please do not use here neither any special make syntax nor any unusual tools/utilities!
+
+#The following can be overridden from command line e.g. "make -f makefile.unix CC=gcc ARFLAGS=rcs"
+DESTDIR   =
+PREFIX    = /usr/local
+LIBPATH   = $(PREFIX)/lib
+INCPATH   = $(PREFIX)/include
+CC        = cc
+AR        = ar
+ARFLAGS   = r
+RANLIB    = ranlib
+CFLAGS    = -O2
+LDFLAGS   =
+
+VERSION   = 1.0.1
+
+#Compilation flags
+LTM_CFLAGS  = -I. $(CFLAGS)
+LTM_LDFLAGS = $(LDFLAGS)
+
+#Library to be created (this makefile builds only static library)
+LIBMAIN_S = libtommath.a
+
+OBJECTS=bn_error.o bn_fast_mp_invmod.o bn_fast_mp_montgomery_reduce.o bn_fast_s_mp_mul_digs.o \
+bn_fast_s_mp_mul_high_digs.o bn_fast_s_mp_sqr.o bn_mp_2expt.o bn_mp_abs.o bn_mp_add.o bn_mp_add_d.o \
+bn_mp_addmod.o bn_mp_and.o bn_mp_clamp.o bn_mp_clear.o bn_mp_clear_multi.o bn_mp_cmp.o bn_mp_cmp_d.o \
+bn_mp_cmp_mag.o bn_mp_cnt_lsb.o bn_mp_complement.o bn_mp_copy.o bn_mp_count_bits.o bn_mp_div.o \
+bn_mp_div_2.o bn_mp_div_2d.o bn_mp_div_3.o bn_mp_div_d.o bn_mp_dr_is_modulus.o bn_mp_dr_reduce.o \
+bn_mp_dr_setup.o bn_mp_exch.o bn_mp_export.o bn_mp_expt_d.o bn_mp_expt_d_ex.o bn_mp_exptmod.o \
+bn_mp_exptmod_fast.o bn_mp_exteuclid.o bn_mp_fread.o bn_mp_fwrite.o bn_mp_gcd.o bn_mp_get_double.o \
+bn_mp_get_int.o bn_mp_get_long.o bn_mp_get_long_long.o bn_mp_grow.o bn_mp_import.o bn_mp_init.o \
+bn_mp_init_copy.o bn_mp_init_multi.o bn_mp_init_set.o bn_mp_init_set_int.o bn_mp_init_size.o \
+bn_mp_invmod.o bn_mp_invmod_slow.o bn_mp_is_square.o bn_mp_jacobi.o bn_mp_karatsuba_mul.o \
+bn_mp_karatsuba_sqr.o bn_mp_lcm.o bn_mp_lshd.o bn_mp_mod.o bn_mp_mod_2d.o bn_mp_mod_d.o \
+bn_mp_montgomery_calc_normalization.o bn_mp_montgomery_reduce.o bn_mp_montgomery_setup.o bn_mp_mul.o \
+bn_mp_mul_2.o bn_mp_mul_2d.o bn_mp_mul_d.o bn_mp_mulmod.o bn_mp_n_root.o bn_mp_n_root_ex.o bn_mp_neg.o \
+bn_mp_or.o bn_mp_prime_fermat.o bn_mp_prime_is_divisible.o bn_mp_prime_is_prime.o \
+bn_mp_prime_miller_rabin.o bn_mp_prime_next_prime.o bn_mp_prime_rabin_miller_trials.o \
+bn_mp_prime_random_ex.o bn_mp_radix_size.o bn_mp_radix_smap.o bn_mp_rand.o bn_mp_read_radix.o \
+bn_mp_read_signed_bin.o bn_mp_read_unsigned_bin.o bn_mp_reduce.o bn_mp_reduce_2k.o bn_mp_reduce_2k_l.o \
+bn_mp_reduce_2k_setup.o bn_mp_reduce_2k_setup_l.o bn_mp_reduce_is_2k.o bn_mp_reduce_is_2k_l.o \
+bn_mp_reduce_setup.o bn_mp_rshd.o bn_mp_set.o bn_mp_set_double.o bn_mp_set_int.o bn_mp_set_long.o \
+bn_mp_set_long_long.o bn_mp_shrink.o bn_mp_signed_bin_size.o bn_mp_sqr.o bn_mp_sqrmod.o bn_mp_sqrt.o \
+bn_mp_sqrtmod_prime.o bn_mp_sub.o bn_mp_sub_d.o bn_mp_submod.o bn_mp_tc_and.o bn_mp_tc_div_2d.o \
+bn_mp_tc_or.o bn_mp_tc_xor.o bn_mp_to_signed_bin.o bn_mp_to_signed_bin_n.o bn_mp_to_unsigned_bin.o \
+bn_mp_to_unsigned_bin_n.o bn_mp_toom_mul.o bn_mp_toom_sqr.o bn_mp_toradix.o bn_mp_toradix_n.o \
+bn_mp_unsigned_bin_size.o bn_mp_xor.o bn_mp_zero.o bn_prime_tab.o bn_reverse.o bn_s_mp_add.o \
+bn_s_mp_exptmod.o bn_s_mp_mul_digs.o bn_s_mp_mul_high_digs.o bn_s_mp_sqr.o bn_s_mp_sub.o bncore.o
+
+HEADERS_PUB=tommath.h tommath_class.h tommath_superclass.h
+
+HEADERS=tommath_private.h $(HEADERS_PUB)
+
+#The default rule for make builds the libtommath.a library (static)
+default: $(LIBMAIN_S)
+
+#Dependencies on *.h
+$(OBJECTS): $(HEADERS)
+
+#This is necessary for compatibility with BSD make (namely on OpenBSD)
+.SUFFIXES: .o .c
+.c.o:
+	$(CC) $(LTM_CFLAGS) -c $< -o $@
+
+#Create libtommath.a
+$(LIBMAIN_S): $(OBJECTS)
+	$(AR) $(ARFLAGS) $@ $(OBJECTS)
+	$(RANLIB) $@
+
+#Build test suite
+test: $(LIBMAIN_S) demo/demo.c
+	$(CC) $(LTM_CFLAGS) $(LTM_LDFLAGS) demo/demo.c $(LIBMAIN_S) -DLTM_DEMO_TEST_VS_MTEST=0 -o $@
+	@echo "NOTICE: start the tests by: ./test"
+
+all: $(LIBMAIN_S) test
+
+#NOTE: this makefile works also on cygwin, thus we need to delete *.exe
+clean:
+	-@rm -f $(OBJECTS) $(LIBMAIN_S)
+	-@rm -f demo/demo.o test test.exe
+
+#Install the library + headers
+install: $(LIBMAIN_S)
+	@mkdir -p $(DESTDIR)$(INCPATH) $(DESTDIR)$(LIBPATH)/pkgconfig
+	@cp $(LIBMAIN_S) $(DESTDIR)$(LIBPATH)/
+	@cp $(HEADERS_PUB) $(DESTDIR)$(INCPATH)/
+	@sed -e 's,^prefix=.*,prefix=$(PREFIX),' -e 's,^Version:.*,Version: $(VERSION),' libtommath.pc.in > $(DESTDIR)$(LIBPATH)/pkgconfig/libtommath.pc
+
+# ref:         $Format:%D$
+# git commit:  $Format:%H$
+# commit time: $Format:%ai$