Added a release rule in Makefile.os4 and a new README about this OS4 release.

.gitignore

@@ -0,0 +1,2 @@
+*.lha
+

Makefile.os4

@@ -65,7 +65,7 @@ CFLAGS := $(MCRT) $(INCPATH) -Wall -Wwrite-strings -Wno-unused-variable -Wno-unu
 
 .PHONY: all all-before all-after clean clean-custom realclean
 
-all: all-before libpcre.a libpcre-posix.a pcretest pcregrep all-after
+all: all-before libpcre.a libpcre-posix.a all-after
 
 all-before:
 #	You can add rules here to execute before the project is built
@@ -73,6 +73,8 @@ all-before:
 all-after:
 #	You can add rules here to execute after the project is built
 
+tests: pcretest pcregrep
+
 clean: clean-custom
 	@echo "Cleaning compiler objects..."
 	@rm -f  $(libpcre_OBJ) $(libpcre-posix_OBJ) $(pcretest_OBJ) $(pcregrep_OBJ) $(pcredemo_OBJ)
@@ -223,6 +225,39 @@ runtests: libpcre.a libpcre-posix.a pcretest pcregrep
 	sh RunTest
 	sh RunGrepTest
 
+release:
+	@echo "Create release folders..."
+	@mkdir -p release/local/newlib/lib release/local/clib2/lib release/local/Documentation/pcre release/local/common/include
+	
+	@echo "Building newlib based libraries..."
+	@make -f Makefile.os4 all
+	@cp libpcre.a release/local/newlib/lib/
+	@cp libpcre-posix.a release/local/newlib/lib/
+	
+	@echo "Clean build and libraries files..."
+	@make -f Makefile.os4 cleanall
+	
+	@echo "Building clib2 based libraries..."
+	@make -f Makefile.os4 all USE_CLIB2=yes
+	@cp libpcre.a release/local/clib2/lib/
+	@cp libpcre-posix.a release/local/clib2/lib/
 
+	@echo "Copy the necessary files..."
+	@cp pcre.h release/local/common/include/
+	@cp pcreposix.h release/local/common/include/
+	@cp COPYING release/local/Documentation/pcre/
+	@cp LICENCE release/local/Documentation/pcre/
+	@cp README release/local/Documentation/pcre/
+	@cp README-OS4.md release/local/Documentation/pcre/
+	
+	@echo "Clean build and libraries files..."
+	@make -f Makefile.os4 cleanall
+	
+	@echo "Creating the lha release file..."
+	@rm -f pcre.lha
+	@lha -aeqr3 a pcre.lha release/
+	
+	@rm -rf release
+	
 ###################################################################
 

README-OS4.md

@@ -0,0 +1,42 @@
+PCRE (Perl-compatible regular expression library)
+---------------------------------------------------------------------------
+
+This is a port of PCRE 8.45 by Philip Hazel for AmigaOS 4, as found at the
+Sourceforge repository (https://sourceforge.net/projects/pcre/files/pcre/)
+
+More information about PCRE can be found at its official website
+at https://www.pcre.org
+
+In the archive both newlib and clib2 libraries are included. It has been
+tested with various applications, but in case you find issues please 
+contact me.
+
+This release can replace the old 6.4 from Henning Nielsen Lund, but it
+might not work well with your application, because of the many changes
+happened the last 10+ years.
+
+To install it into your AmigaOS 4 SDK installation, just extract all the 
+files in the SDK: path.
+
+Compile
+--------------------------
+The source and the changes I did can be found at my personale repository
+https://git.walkero.gr/walkero/pcre
+
+You can compile it using the Makefile.os4 file, and produce the libraries
+yourself.
+
+* with newlib run:
+  ```bash
+  make -f Makefile.os4 all
+  ```
+* with clib2 run:
+  ```bash
+  make -f Makefile.os4 all USE_CLIB2=yes
+  ```
+
+Changelog
+--------------------------
+v8.45r1 - 2022-07-31
+* First release
+