Start using GNU Automake in lib/

Rename lib/Makefile as lib/Makefile.am and make the changes required to
use Automake and libtool in order to build the library.
This requires changes in configure.ac as well as in files in other
directories.

Libtool has its own 3-part versioning format (i.e. A.B.C) that forces
changes to the final name of the generated library.  However, we can
still adopt the same numbers and continue progressing the version used
in the library provided that functions are not removed from the ABI.

Signed-off-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>

Makefile.am

@@ -1,4 +1,5 @@
-#include config.mk
+ACLOCAL_AMFLAGS = -I m4
+
 include aminclude.am
 
 # List of directories built by default.

Makefile.in

@@ -100,8 +100,10 @@ subdir = .
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/m4/ax_check_compile_flag.m4 \
 	$(top_srcdir)/m4/ax_pthread.m4 \
-	$(top_srcdir)/m4/ax_with_prog.m4 $(top_srcdir)/acinclude.m4 \
-	$(top_srcdir)/configure.ac
+	$(top_srcdir)/m4/ax_with_prog.m4 $(top_srcdir)/m4/libtool.m4 \
+	$(top_srcdir)/m4/ltoptions.m4 $(top_srcdir)/m4/ltsugar.m4 \
+	$(top_srcdir)/m4/ltversion.m4 $(top_srcdir)/m4/lt~obsolete.m4 \
+	$(top_srcdir)/acinclude.m4 $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 DIST_COMMON = $(srcdir)/Makefile.am $(top_srcdir)/configure \
@@ -203,7 +205,7 @@ am__DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/aminclude.am \
 	$(srcdir)/config.h.in $(srcdir)/config.mk.in \
 	$(top_srcdir)/oct/config.mk.in \
 	$(top_srcdir)/test/run_test.sh.in compile config.guess \
-	config.sub depcomp install-sh missing
+	config.sub depcomp install-sh ltmain.sh missing
 DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
 distdir = $(PACKAGE)-$(VERSION)
 top_distdir = $(distdir)
@@ -258,13 +260,19 @@ AUTOMAKE = @AUTOMAKE@
 AWK = @AWK@
 BASH = @BASH@
 CC = @CC@
+CCAS = @CCAS@
+CCASDEPMODE = @CCASDEPMODE@
+CCASFLAGS = @CCASFLAGS@
 CCDEPMODE = @CCDEPMODE@
 CFLAGS = @CFLAGS@
 CPP = @CPP@
 CPPFLAGS = @CPPFLAGS@
 CYGPATH_W = @CYGPATH_W@
 DEFS = @DEFS@
 DEPDIR = @DEPDIR@
+DLLTOOL = @DLLTOOL@
+DSYMUTIL = @DSYMUTIL@
+DUMPBIN = @DUMPBIN@
 DX_CONFIG = @DX_CONFIG@
 DX_DOCDIR = @DX_DOCDIR@
 DX_DOXYGEN = @DX_DOXYGEN@
@@ -284,22 +292,33 @@ ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
 EGREP = @EGREP@
 EXEEXT = @EXEEXT@
+FGREP = @FGREP@
 GREP = @GREP@
 GZIP = @GZIP@
 INSTALL = @INSTALL@
 INSTALL_DATA = @INSTALL_DATA@
 INSTALL_PROGRAM = @INSTALL_PROGRAM@
 INSTALL_SCRIPT = @INSTALL_SCRIPT@
 INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
+LD = @LD@
 LDFLAGS = @LDFLAGS@
 LIBOBJS = @LIBOBJS@
 LIBS = @LIBS@
+LIBTOOL = @LIBTOOL@
+LIPO = @LIPO@
 LN_S = @LN_S@
 LTLIBOBJS = @LTLIBOBJS@
+LT_SYS_LIBRARY_PATH = @LT_SYS_LIBRARY_PATH@
 MAINT = @MAINT@
 MAKEINFO = @MAKEINFO@
+MANIFEST_TOOL = @MANIFEST_TOOL@
 MKDIR_P = @MKDIR_P@
+NM = @NM@
+NMEDIT = @NMEDIT@
+OBJDUMP = @OBJDUMP@
 OBJEXT = @OBJEXT@
+OTOOL = @OTOOL@
+OTOOL64 = @OTOOL64@
 PACKAGE = @PACKAGE@
 PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
 PACKAGE_NAME = @PACKAGE_NAME@
@@ -317,6 +336,7 @@ SED = @SED@
 SET_MAKE = @SET_MAKE@
 SHA256SUM = @SHA256SUM@
 SHELL = @SHELL@
+SOVERSION = @SOVERSION@
 STRIP = @STRIP@
 VALGRIND = @VALGRIND@
 VERSION = @VERSION@
@@ -325,7 +345,9 @@ abs_builddir = @abs_builddir@
 abs_srcdir = @abs_srcdir@
 abs_top_builddir = @abs_top_builddir@
 abs_top_srcdir = @abs_top_srcdir@
+ac_ct_AR = @ac_ct_AR@
 ac_ct_CC = @ac_ct_CC@
+ac_ct_DUMPBIN = @ac_ct_DUMPBIN@
 am__include = @am__include@
 am__leading_dot = @am__leading_dot@
 am__quote = @am__quote@
@@ -377,6 +399,7 @@ target_vendor = @target_vendor@
 top_build_prefix = @top_build_prefix@
 top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
+ACLOCAL_AMFLAGS = -I m4
 @DX_COND_doc_TRUE@@DX_COND_html_TRUE@DX_CLEAN_HTML = @DX_DOCDIR@/html
 @DX_COND_doc_TRUE@@DX_COND_man_TRUE@DX_CLEAN_MAN = @DX_DOCDIR@/man
 @DX_COND_doc_TRUE@@DX_COND_pdf_TRUE@DX_CLEAN_PDF = @DX_DOCDIR@/@PACKAGE@.pdf @DX_DOCDIR@/latex
@@ -390,8 +413,6 @@ top_srcdir = @top_srcdir@
 @DX_COND_doc_TRUE@    $(DX_CLEAN_PDF)
 
 
-#include config.mk
-
 # List of directories built by default.
 SUBDIRS = lib test samples
 DIST_SUBDIRS = doc inc_nx m4 oct
@@ -458,6 +479,15 @@ oct/config.mk: $(top_builddir)/config.status $(top_srcdir)/oct/config.mk.in
 	cd $(top_builddir) && $(SHELL) ./config.status $@
 test/run_test.sh: $(top_builddir)/config.status $(top_srcdir)/test/run_test.sh.in
 	cd $(top_builddir) && $(SHELL) ./config.status $@
+
+mostlyclean-libtool:
+	-rm -f *.lo
+
+clean-libtool:
+	-rm -rf .libs _libs
+
+distclean-libtool:
+	-rm -f libtool config.lt
 install-dist_docDATA: $(dist_doc_DATA)
 	@$(NORMAL_INSTALL)
 	@list='$(dist_doc_DATA)'; test -n "$(docdir)" || list=; \
@@ -845,12 +875,13 @@ maintainer-clean-generic:
 	@echo "it deletes files that may require special tools to rebuild."
 clean: clean-recursive
 
-clean-am: clean-generic mostlyclean-am
+clean-am: clean-generic clean-libtool mostlyclean-am
 
 distclean: distclean-recursive
 	-rm -f $(am__CONFIG_DISTCLEAN_FILES)
 	-rm -f Makefile
-distclean-am: clean-am distclean-generic distclean-hdr distclean-tags
+distclean-am: clean-am distclean-generic distclean-hdr \
+	distclean-libtool distclean-tags
 
 dvi: dvi-recursive
 
@@ -900,7 +931,7 @@ maintainer-clean-am: distclean-am maintainer-clean-generic
 
 mostlyclean: mostlyclean-recursive
 
-mostlyclean-am: mostlyclean-generic
+mostlyclean-am: mostlyclean-generic mostlyclean-libtool
 
 @DX_COND_doc_FALSE@pdf: pdf-recursive
 
@@ -918,9 +949,10 @@ uninstall-am: uninstall-dist_docDATA uninstall-includeHEADERS
 
 .PHONY: $(am__recursive_targets) CTAGS GTAGS TAGS all all-am \
 	am--refresh check check-am clean clean-cscope clean-generic \
-	cscope cscopelist-am ctags ctags-am dist dist-all dist-bzip2 \
-	dist-gzip dist-lzip dist-shar dist-tarZ dist-xz dist-zip \
-	dist-zstd distcheck distclean distclean-generic distclean-hdr \
+	clean-libtool cscope cscopelist-am ctags ctags-am dist \
+	dist-all dist-bzip2 dist-gzip dist-lzip dist-shar dist-tarZ \
+	dist-xz dist-zip dist-zstd distcheck distclean \
+	distclean-generic distclean-hdr distclean-libtool \
 	distclean-tags distcleancheck distdir distuninstallcheck dvi \
 	dvi-am html html-am info info-am install install-am \
 	install-data install-data-am install-dist_docDATA install-dvi \
@@ -929,9 +961,9 @@ uninstall-am: uninstall-dist_docDATA uninstall-includeHEADERS
 	install-info-am install-man install-pdf install-pdf-am \
 	install-ps install-ps-am install-strip installcheck \
 	installcheck-am installdirs installdirs-am maintainer-clean \
-	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
-	pdf-am ps ps-am tags tags-am uninstall uninstall-am \
-	uninstall-dist_docDATA uninstall-includeHEADERS
+	maintainer-clean-generic mostlyclean mostlyclean-generic \
+	mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \
+	uninstall-am uninstall-dist_docDATA uninstall-includeHEADERS
 
 .PRECIOUS: Makefile
 

aclocal.m4

@@ -56,6 +56,26 @@ m4_ifndef([AC_AUTOCONF_VERSION],
   [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
 _AM_AUTOCONF_VERSION(m4_defn([AC_AUTOCONF_VERSION]))])
 
+# Figure out how to run the assembler.                      -*- Autoconf -*-
+
+# Copyright (C) 2001-2020 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_PROG_AS
+# ----------
+AC_DEFUN([AM_PROG_AS],
+[# By default we simply use the C compiler to build assembly code.
+AC_REQUIRE([AC_PROG_CC])
+test "${CCAS+set}" = set || CCAS=$CC
+test "${CCASFLAGS+set}" = set || CCASFLAGS=$CFLAGS
+AC_ARG_VAR([CCAS],      [assembler compiler command (defaults to CC)])
+AC_ARG_VAR([CCASFLAGS], [assembler compiler flags (defaults to CFLAGS)])
+_AM_IF_OPTION([no-dependencies],, [_AM_DEPENDENCIES([CCAS])])dnl
+])
+
 # AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-
 
 # Copyright (C) 2001-2020 Free Software Foundation, Inc.
@@ -1174,4 +1194,9 @@ AC_SUBST([am__untar])
 m4_include([m4/ax_check_compile_flag.m4])
 m4_include([m4/ax_pthread.m4])
 m4_include([m4/ax_with_prog.m4])
+m4_include([m4/libtool.m4])
+m4_include([m4/ltoptions.m4])
+m4_include([m4/ltsugar.m4])
+m4_include([m4/ltversion.m4])
+m4_include([m4/lt~obsolete.m4])
 m4_include([acinclude.m4])

config.h.in

@@ -1,5 +1,8 @@
 /* config.h.in.  Generated from configure.ac by autoheader.  */
 
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#undef HAVE_DLFCN_H
+
 /* Define to 1 if you have the <fcntl.h> header file. */
 #undef HAVE_FCNTL_H
 
@@ -131,6 +134,9 @@
    slash. */
 #undef LSTAT_FOLLOWS_SLASHED_SYMLINK
 
+/* Define to the sub-directory where libtool stores uninstalled libraries. */
+#undef LT_OBJDIR
+
 /* Define to the address where bug reports for this package should be sent. */
 #undef PACKAGE_BUGREPORT