Update Windows build and add Windows to the CI lineup

.github/workflows/check.yml

@@ -58,3 +58,23 @@ jobs:
       with:
         name: tre-macos-logs
         path: ./**/*.log
+  windows:
+    name: Windows
+    runs-on: windows-latest
+    steps:
+    - name: Prepare
+      uses: microsoft/setup-msbuild@v2
+    - name: Check out
+      uses: actions/checkout@v4
+    - name: Build
+      run: msbuild win32/tre.sln
+    - name: Run tests
+      run: |
+        win32/Debug/retest.exe -o tests/retest.log
+        win32/Debug/test-str-source.exe -o tests/test-str-source.log
+    - name: Upload logs
+      if: ${{ failure() }}
+      uses: actions/upload-artifact@v4
+      with:
+        name: tre-macos-logs
+        path: ./**/*.log

Makefile.am

@@ -10,10 +10,12 @@ SUBDIRS = local_includes lib $(agrep_dirs) tests utils po m4
 
 EXTRA_DIST = \
 	LICENSE \
-	win32/tre-config.h win32/config.h \
-	win32/tre.vcproj \
+	win32/tre-config.h
+	win32/config.h \
+	win32/tre.vcxproj \
 	win32/tre.sln \
-	win32/retest.vcproj \
+	win32/retest.vcxproj \
+	win32/test-str-source.vcxproj \
 	python/tre-python.c \
 	python/setup.py \
 	python/example.py

README.md

@@ -184,32 +184,20 @@ handler, or in many threads of a multithreaded application.
 Portable
 --------
 
-TRE is portable across multiple platforms. Here's a table of
-platforms and compilers that have been successfully used to compile
-and run TRE:
+TRE is portable across multiple platforms.  Below is a table of
+platforms and compilers used to develop and test TRE:
 
 <table>
-   <tr><th>Platform(s)</th>                    <th>Compiler(s)</th></tr>
-   <tr><td>AIX 4.3.2 - 5.3.0</td>              <td>GCC, C for AIX compiler version 5</td></tr>
-   <tr><td>Compaq Tru64 UNIX V5.1A/B</td>      <td>Compaq C V6.4-014 - V6.5-011</td></tr>
-   <tr><td>Cygwin 1.3 - 1.5</td>               <td>GCC</td></tr>
-   <tr><td>Digital UNIX V4.0</td>              <td>DEC C V5.9-005</td></tr>
-   <tr><td>FreeBSD 4 and above</td>            <td>GCC</td></tr>
-   <tr><td>GNU/Linux systems on x86, x86_64, ppc64, s390</td><td>GCC</td></tr>
-   <tr><td>HP-UX 10.20- 11.00</td>             <td>GCC, HP C Compiler</td></tr>
-   <tr><td>IRIX 6.5</td>                       <td>GCC, MIPSpro Compilers 7.3.1.3m</td></tr>
-   <tr><td>Max OS X</td></tr>
-   <tr><td>NetBSD 1.5 and above</td>           <td>GCC, egcs</td></tr>
-   <tr><td>OpenBSD 3.3 and above</td>          <td>GCC</td></tr>
-   <tr><td>Solaris 2.7-10 sparc/x86</td>       <td>GCC, Sun Workshop 6 compilers</td></tr>
-   <tr><td>Windows 98 - XP</td>                <td>Microsoft Visual C++ 6.0</td></tr>
+	<tr><th>Platform</th>				<th>Compiler</th></tr>
+	<tr><td>FreeBSD 14.1</td>			<td>Clang 18</td></tr>
+	<tr><td>Ubuntu 22.04</td>			<td>GCC 11</td></tr>
+	<tr><td>macOS 14.6</td>				<td>Clang 14</td></tr>
+	<tr><td>Windows 11</td>				<td>Microsoft Visual Studio 2022</td></tr>
 </table>
 
-
-TRE 0.7.5 should compile without changes on all of the above
-platforms.  Tell me if you are using TRE on a platform that is not
-listed above, and I'll add it to the list. Also let me know if TRE
-does not work on a listed platform.
+TRE should compile without changes on most modern POSIX-like
+platforms, and be easily portable to any platform with a hosted C
+implementation.
 
 Depending on the platform, you may need to install libutf8 to get
 wide character and multibyte character set support.

configure.ac

@@ -11,7 +11,11 @@ dnl Checks for programs.
 AC_PROG_CC
 AC_PROG_CPP
 AC_PROG_INSTALL
-AM_PROG_CC_C_O
+
+dnl Checks for compiler characteristics.
+AC_USE_SYSTEM_EXTENSIONS
+AC_C_CONST
+AC_C_INLINE
 
 tre_version_1=`echo $PACKAGE_VERSION | cut -d . -f 1`
 tre_version_2=`echo $PACKAGE_VERSION | cut -d . -f 2`
@@ -96,11 +100,6 @@ else
 fi
 
 
-dnl Checks for compiler characteristics.
-AC_C_CONST
-AC_C_INLINE
-AC_USE_SYSTEM_EXTENSIONS
-
 dnl Make sure locally configured headers are used (this adds the #define to config.h).
 AC_DEFINE(USE_LOCAL_TRE_H, 1, [ Define to ensure locally configured headers are used ])
 
@@ -536,6 +535,7 @@ tests/agrep/Makefile
 tre.pc
 tre.spec
 utils/Makefile
+win32/config.h
 win32/tre-config.h
 ])
 AC_OUTPUT