Add preprocessor variable to override version number on title bar.

Modify github workflow to set version number to current git SHA, and
append to artifact name.

.github/workflows/c-cpp.yml

@@ -14,9 +14,9 @@ jobs:
         include:
         - name: Ubuntu 64bit (gcc)
           os: ubuntu-latest
-          args: --enable-networking --enable-release-build
+          args: --enable-networking --enable-release-build CFLAGS="-DPCEM_BUILD_VERSION=${GITHUB_SHA::8}"
           artifacts_name: PCem-Ubuntu-${{ github.head_ref }}-${{ github.run_number }}
-          artifacts_path: PCem.tar.bz2
+          artifacts_path: PCem-${{ github.sha }}.tar.bz2
           installdeps: >-
             libsdl2-dev
             libopenal-dev
@@ -25,9 +25,9 @@ jobs:
         - name: Windows 32bits (MSYS2)
           os: windows-latest
           compiler: MINGW32
-          args: --enable-networking --enable-release-build
+          args: --enable-networking --enable-release-build CFLAGS="-DPCEM_BUILD_VERSION=${GITHUB_SHA::8}"
           artifacts_name: PCem-Windows-MINGW32-${{ github.head_ref }}-${{ github.run_number }}
-          artifacts_path: PCem.zip
+          artifacts_path: PCem-${{ github.sha }}.zip
           installdeps: >-
             base-devel
             zip
@@ -40,9 +40,9 @@ jobs:
         - name: Windows 64bits (MSYS2)
           os: windows-latest
           compiler: MINGW64
-          args: --enable-networking --enable-release-build
+          args: --enable-networking --enable-release-build CFLAGS="-DPCEM_BUILD_VERSION=${GITHUB_SHA::8}"
           artifacts_name: PCem-Windows-MINGW64-${{ github.head_ref }}-${{ github.run_number }}
-          artifacts_path: PCem.zip
+          artifacts_path: PCem-${{ github.sha }}.zip
           installdeps: >-
             base-devel
             zip

src/ibm.h

@@ -4,6 +4,15 @@
 
 #include "timer.h"
 
+
+#ifdef PCEM_BUILD_VERSION
+#define STRINGISE2(string) #string
+#define STRINGISE(string) STRINGISE2(string)
+#define PCEM_VERSION_STRING "build " STRINGISE(PCEM_BUILD_VERSION)
+#else
+#define PCEM_VERSION_STRING "v17"
+#endif
+
 #ifdef ABS
 #undef ABS
 #endif

src/pc.c

@@ -605,7 +605,7 @@ void runpc()
         if (win_title_update)
         {
                 win_title_update=0;
-                sprintf(s, "PCem v17 - %i%% - %s - %s - %s", fps, model_getname(), models[model].cpu[cpu_manufacturer].cpus[cpu].name, (!mousecapture) ? "Click to capture mouse" : ((mouse_get_type(mouse_type) & MOUSE_TYPE_3BUTTON) ? "Press CTRL-END to release mouse" : "Press CTRL-END or middle button to release mouse"));
+                sprintf(s, "PCem " PCEM_VERSION_STRING " - %i%% - %s - %s - %s", fps, model_getname(), models[model].cpu[cpu_manufacturer].cpus[cpu].name, (!mousecapture) ? "Click to capture mouse" : ((mouse_get_type(mouse_type) & MOUSE_TYPE_3BUTTON) ? "Press CTRL-END to release mouse" : "Press CTRL-END or middle button to release mouse"));
 #ifdef __APPLE__
                 // Needed due to modifying the UI on the non-main thread is a big no-no.
                 dispatch_async_f(dispatch_get_main_queue(), strdup(s), _set_window_title);

src/wx-sdl2-display-win.c

@@ -595,7 +595,7 @@ int window_create()
         hwnd = CreateWindowEx (
                 0,                   /* Extended possibilites for variation */
                 szClassName,         /* Classname */
-                "PCem v17",          /* Title Text */
+                "PCem " PCEM_VERSION_STRING,   /* Title Text */
                 WS_OVERLAPPEDWINDOW&~WS_SIZEBOX, /* default window */
                 CW_USEDEFAULT,       /* Windows decides the position */
                 CW_USEDEFAULT,       /* where the window ends up on the screen */