released 4.2.0

- add pkg-config files reflex.pc and relfexmin.pc with updated configure and makefiles
- minor update of option -p to permit empty lexer specifications #202

Makefile.am

@@ -2,7 +2,10 @@ SUBDIRS = lib src . tests @EXAMPLESDIR@
 
 man1_MANS = doc/man/reflex.1
 
-EXTRA_DIST = README.md LICENSE.txt CONTRIBUTING.md CODE_OF_CONDUCT.md
+pkgconfigdir = $(libdir)/pkgconfig
+pkgconfig_DATA = reflex.pc reflexmin.pc
+
+EXTRA_DIST = README.md LICENSE.txt CONTRIBUTING.md CODE_OF_CONDUCT.md reflex.pc.in reflexmin.pc.in
 
 all-local:	cp2bin
 

Makefile.in

@@ -13,6 +13,7 @@
 # PARTICULAR PURPOSE.
 
 @SET_MAKE@
+
 VPATH = @srcdir@
 am__is_gnu_make = { \
   if test -z '$(MAKELEVEL)'; then \
@@ -98,7 +99,7 @@ am__CONFIG_DISTCLEAN_FILES = config.status config.cache config.log \
  configure.lineno config.status.lineno
 mkinstalldirs = $(install_sh) -d
 CONFIG_HEADER = config.h
-CONFIG_CLEAN_FILES = doc/Doxyfile
+CONFIG_CLEAN_FILES = doc/Doxyfile reflex.pc reflexmin.pc
 CONFIG_CLEAN_VPATH_FILES =
 AM_V_P = $(am__v_P_@AM_V@)
 am__v_P_ = $(am__v_P_@AM_DEFAULT_V@)
@@ -155,9 +156,10 @@ am__uninstall_files_from_dir = { \
          $(am__cd) "$$dir" && rm -f $$files; }; \
   }
 man1dir = $(mandir)/man1
-am__installdirs = "$(DESTDIR)$(man1dir)"
+am__installdirs = "$(DESTDIR)$(man1dir)" "$(DESTDIR)$(pkgconfigdir)"
 NROFF = nroff
 MANS = $(man1_MANS)
+DATA = $(pkgconfig_DATA)
 RECURSIVE_CLEAN_TARGETS = mostlyclean-recursive clean-recursive	\
   distclean-recursive maintainer-clean-recursive
 am__recursive_targets = \
@@ -186,6 +188,7 @@ am__define_uniq_tagged_files = \
   done | $(am__uniquify_input)`
 DIST_SUBDIRS = $(SUBDIRS)
 am__DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/config.h.in \
+	$(srcdir)/reflex.pc.in $(srcdir)/reflexmin.pc.in \
 	$(top_srcdir)/doc/Doxyfile.in INSTALL.md README.md ar-lib \
 	compile config.guess config.sub depcomp install-sh ltmain.sh \
 	missing
@@ -348,7 +351,9 @@ top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
 SUBDIRS = lib src . tests @EXAMPLESDIR@
 man1_MANS = doc/man/reflex.1
-EXTRA_DIST = README.md LICENSE.txt CONTRIBUTING.md CODE_OF_CONDUCT.md
+pkgconfigdir = $(libdir)/pkgconfig
+pkgconfig_DATA = reflex.pc reflexmin.pc
+EXTRA_DIST = README.md LICENSE.txt CONTRIBUTING.md CODE_OF_CONDUCT.md reflex.pc.in reflexmin.pc.in
 
 # to generate the documentation: make doc/html
 libdocdir = @DOXYGEN_OUTPUT_DIRECTORY@
@@ -406,6 +411,10 @@ distclean-hdr:
 	-rm -f config.h stamp-h1
 doc/Doxyfile: $(top_builddir)/config.status $(top_srcdir)/doc/Doxyfile.in
 	cd $(top_builddir) && $(SHELL) ./config.status $@
+reflex.pc: $(top_builddir)/config.status $(srcdir)/reflex.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $@
+reflexmin.pc: $(top_builddir)/config.status $(srcdir)/reflexmin.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $@
 install-man1: $(man1_MANS)
 	@$(NORMAL_INSTALL)
 	@list1='$(man1_MANS)'; \
@@ -447,6 +456,27 @@ uninstall-man1:
 	} | sed -e 's,.*/,,;h;s,.*\.,,;s,^[^1][0-9a-z]*$$,1,;x' \
 	      -e 's,\.[0-9a-z]*$$,,;$(transform);G;s,\n,.,'`; \
 	dir='$(DESTDIR)$(man1dir)'; $(am__uninstall_files_from_dir)
+install-pkgconfigDATA: $(pkgconfig_DATA)
+	@$(NORMAL_INSTALL)
+	@list='$(pkgconfig_DATA)'; test -n "$(pkgconfigdir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(pkgconfigdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(pkgconfigdir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  echo "$$d$$p"; \
+	done | $(am__base_list) | \
+	while read files; do \
+	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(pkgconfigdir)'"; \
+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(pkgconfigdir)" || exit $$?; \
+	done
+
+uninstall-pkgconfigDATA:
+	@$(NORMAL_UNINSTALL)
+	@list='$(pkgconfig_DATA)'; test -n "$(pkgconfigdir)" || list=; \
+	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
+	dir='$(DESTDIR)$(pkgconfigdir)'; $(am__uninstall_files_from_dir)
 
 # This directory's subdirectories are mostly independent; you can cd
 # into them and run 'make' without going through this Makefile.
@@ -752,10 +782,10 @@ distcleancheck: distclean
 	       exit 1; } >&2
 check-am: all-am
 check: check-recursive
-all-am: Makefile $(MANS) config.h all-local
+all-am: Makefile $(MANS) $(DATA) config.h all-local
 installdirs: installdirs-recursive
 installdirs-am:
-	for dir in "$(DESTDIR)$(man1dir)"; do \
+	for dir in "$(DESTDIR)$(man1dir)" "$(DESTDIR)$(pkgconfigdir)"; do \
 	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
 	done
 install: install-recursive
@@ -809,7 +839,7 @@ info: info-recursive
 
 info-am:
 
-install-data-am: install-man
+install-data-am: install-man install-pkgconfigDATA
 	@$(NORMAL_INSTALL)
 	$(MAKE) $(AM_MAKEFLAGS) install-data-hook
 install-dvi: install-dvi-recursive
@@ -856,7 +886,7 @@ ps: ps-recursive
 
 ps-am:
 
-uninstall-am: uninstall-man
+uninstall-am: uninstall-man uninstall-pkgconfigDATA
 
 uninstall-man: uninstall-man1
 
@@ -873,12 +903,12 @@ uninstall-man: uninstall-man1
 	install-data install-data-am install-data-hook install-dvi \
 	install-dvi-am install-exec install-exec-am install-html \
 	install-html-am install-info install-info-am install-man \
-	install-man1 install-pdf install-pdf-am install-ps \
-	install-ps-am install-strip installcheck installcheck-am \
-	installdirs installdirs-am maintainer-clean \
+	install-man1 install-pdf install-pdf-am install-pkgconfigDATA \
+	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-man uninstall-man1
+	uninstall-man uninstall-man1 uninstall-pkgconfigDATA
 
 .PRECIOUS: Makefile
 

README.md

@@ -54,8 +54,8 @@ its event handler requirements.*
 The performance table is indicative of the impact on performance when using
 PCRE2 and Boost.Regex with RE/flex.  PCRE2 and Boost.Regex are optional
 libraries integrated with RE/flex for Perl matching because of their
-efficiency.  By default, RE/flex uses DFA-based extended POSIX matching,
-which is the fastest method as shown in the table.
+efficiency.  By default, RE/flex uses DFA-based extended regular expression
+matching in linear time, the fastest method (as shown in the table).
 
 The RE/flex matcher tracks line numbers, column numbers, and indentations,
 whereas Flex does not (option noyylineno) and neither do the other regex
@@ -212,7 +212,7 @@ To build the examples also:
     $ ./configure --enable-examples && make
 
 After this successfully completes, you can optionally run `make install` to
-install the `reflex` command and `libreflex` library:
+install the `reflex` command and the `libreflex` library:
 
     $ sudo make install
 
@@ -591,6 +591,7 @@ Changelog
 - Mar  5, 2024: 4.1.0 improved lazy quantifiers for POSIX regex lazy matching in linear time using an advanced DFA transformation algorithm introduced in RE/flex in 2016.
 - Mar 11, 2024: 4.1.1 minor update to correct a DFA construction problem for POSIX regex lazy quantifiers matching too much in some cases.
 - Mar 17, 2024: 4.1.2 updated configure scripts; cast negative ctype function arguments (problem detected on NetBSD 10).
+- Mar 27, 2024: 4.2.0 support pkg-config with `reflex.pc` (and `reflexmin.pc` minimized library) to use the reflex library `-lreflex`.
 
 [logo-url]: https://www.genivia.com/images/reflex-logo.png
 [reflex-url]: https://www.genivia.com/reflex.html

configure

@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.71 for re-flex 4.1.2.
+# Generated by GNU Autoconf 2.71 for re-flex 4.2.0.
 #
 # Report bugs to <https://github.com/Genivia/RE-flex/issues>.
 #
@@ -612,8 +612,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='re-flex'
 PACKAGE_TARNAME='reflex'
-PACKAGE_VERSION='4.1.2'
-PACKAGE_STRING='re-flex 4.1.2'
+PACKAGE_VERSION='4.2.0'
+PACKAGE_STRING='re-flex 4.2.0'
 PACKAGE_BUGREPORT='https://github.com/Genivia/RE-flex/issues'
 PACKAGE_URL=''
 
@@ -1339,7 +1339,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures re-flex 4.1.2 to adapt to many kinds of systems.
+\`configure' configures re-flex 4.2.0 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1410,7 +1410,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of re-flex 4.1.2:";;
+     short | recursive ) echo "Configuration of re-flex 4.2.0:";;
    esac
   cat <<\_ACEOF
 
@@ -1513,7 +1513,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-re-flex configure 4.1.2
+re-flex configure 4.2.0
 generated by GNU Autoconf 2.71
 
 Copyright (C) 2021 Free Software Foundation, Inc.
@@ -1853,7 +1853,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by re-flex $as_me 4.1.2, which was
+It was created by re-flex $as_me 4.2.0, which was
 generated by GNU Autoconf 2.71.  Invocation command line was
 
   $ $0$ac_configure_args_raw
@@ -3338,7 +3338,7 @@ fi
 
 # Define the identity of the package.
  PACKAGE='reflex'
- VERSION='4.1.2'
+ VERSION='4.2.0'
 
 
 printf "%s\n" "#define PACKAGE \"$PACKAGE\"" >>confdefs.h
@@ -6301,7 +6301,7 @@ fi
 DOXYGEN_OUTPUT_DIRECTORY="doc/html"
 
 
-ac_config_files="$ac_config_files Makefile lib/Makefile src/Makefile tests/Makefile examples/Makefile"
+ac_config_files="$ac_config_files Makefile lib/Makefile src/Makefile tests/Makefile examples/Makefile reflex.pc reflexmin.pc"
 
 
 cat >confcache <<\_ACEOF
@@ -6835,7 +6835,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by re-flex $as_me 4.1.2, which was
+This file was extended by re-flex $as_me 4.2.0, which was
 generated by GNU Autoconf 2.71.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -6903,7 +6903,7 @@ ac_cs_config_escaped=`printf "%s\n" "$ac_cs_config" | sed "s/^ //; s/'/'\\\\\\\\
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config='$ac_cs_config_escaped'
 ac_cs_version="\\
-re-flex config.status 4.1.2
+re-flex config.status 4.2.0
 configured by $0, generated by GNU Autoconf 2.71,
   with options \\"\$ac_cs_config\\"
 
@@ -7040,6 +7040,8 @@ do
     "src/Makefile") CONFIG_FILES="$CONFIG_FILES src/Makefile" ;;
     "tests/Makefile") CONFIG_FILES="$CONFIG_FILES tests/Makefile" ;;
     "examples/Makefile") CONFIG_FILES="$CONFIG_FILES examples/Makefile" ;;
+    "reflex.pc") CONFIG_FILES="$CONFIG_FILES reflex.pc" ;;
+    "reflexmin.pc") CONFIG_FILES="$CONFIG_FILES reflexmin.pc" ;;
 
   *) as_fn_error $? "invalid argument: \`$ac_config_target'" "$LINENO" 5;;
   esac

configure.ac

@@ -1,4 +1,4 @@
-AC_INIT([re-flex],[4.1.2],[https://github.com/Genivia/RE-flex/issues],[reflex])
+AC_INIT([re-flex],[4.2.0],[https://github.com/Genivia/RE-flex/issues],[reflex])
 AM_INIT_AUTOMAKE([foreign subdir-objects])
 AC_CONFIG_HEADERS([config.h])
 AC_COPYRIGHT([Copyright (C) 2016-2024 Robert van Engelen, Genivia Inc.])
@@ -276,6 +276,6 @@ fi
 DOXYGEN_OUTPUT_DIRECTORY="doc/html"
 AC_SUBST(DOXYGEN_OUTPUT_DIRECTORY)
 
-AC_CONFIG_FILES([Makefile lib/Makefile src/Makefile tests/Makefile examples/Makefile])
+AC_CONFIG_FILES([Makefile lib/Makefile src/Makefile tests/Makefile examples/Makefile reflex.pc reflexmin.pc])
 
 AC_OUTPUT