Fix 32-bit Linux builds with XDelta enabled (#15980)

* First crack at a GitHub Actions pipeline for 32-bit Linux

* Simplify the integer typedefs in xdelta3.h

* Add XDelta to Linux.yml

.github/workflows/Linux.yml

@@ -0,0 +1,40 @@
+name: CI Linux (i686)
+
+on:
+  push:
+  pull_request:
+  repository_dispatch:
+    types: [run_build]
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    container:
+      image: git.libretro.com:5050/libretro-infrastructure/libretro-build-i386-ubuntu:xenial-gcc9
+      options: --user root
+
+    steps:
+      - name: Check Out Repo
+        uses: actions/checkout@v3
+
+      - name: Configure Build
+        run: |
+          ./configure --disable-qt --enable-xdelta
+
+      - name: Compile RA
+        run: |
+          make -j$(getconf _NPROCESSORS_ONLN) clean
+          make -j$(getconf _NPROCESSORS_ONLN)
+
+      - name: Get short SHA
+        id: slug
+        run: echo "::set-output name=sha8::$(echo ${GITHUB_SHA} | cut -c1-8)"
+
+      - uses: actions/upload-artifact@v3
+        with:
+          name: retroarch_linux_i686${{ steps.slug.outputs.sha8 }}
+          path: |
+            retroarch

deps/xdelta3/xdelta3.h

@@ -191,68 +191,31 @@ _Static_assert(SIZEOF_UNSIGNED_LONG_LONG == sizeof(unsigned long long), "SIZEOF_
 #endif
 
 /* Set a xoff_t typedef and the "Q" printf insert. */
-#if defined(_WIN32)
 typedef uint64_t xoff_t;
-#define Q "I64"
-#elif SIZEOF_UNSIGNED_LONG == 8
-typedef unsigned long xoff_t;
-#define Q "l"
-#elif SIZEOF_SIZE_T == 8
-typedef size_t xoff_t;
-#define Q "z"
-#elif SIZEOF_UNSIGNED_LONG_LONG == 8
-typedef unsigned long long xoff_t;
 #define Q "ll"
-#endif /* typedef and #define Q */
-
 #define SIZEOF_XOFF_T 8
 
 #else /* XD3_USE_LARGEFILE64 == 0 */
 
-#if SIZEOF_UNSIGNED_INT == 4
-typedef unsigned int xoff_t;
-#elif SIZEOF_UNSIGNED_LONG == 4
-typedef unsigned long xoff_t;
-#else
 typedef uint32_t xoff_t;
-#endif /* xoff_t is 32 bits */
-
-#define SIZEOF_XOFF_T 4
 #define Q
+#define SIZEOF_XOFF_T 4
+
 #endif /* 64 vs 32 bit xoff_t */
 
 /* Settings based on the size of usize_t (32 and 64 bit window size) */
 #if XD3_USE_LARGESIZET
 
 /* Set a usize_ttypedef and the "W" printf insert. */
-#if defined(_WIN32)
 typedef uint64_t usize_t;
-#define W "I64"
-#elif SIZEOF_UNSIGNED_LONG == 8
-typedef unsigned long usize_t;
-#define W "l"
-#elif SIZEOF_SIZE_T == 8
-typedef size_t usize_t;
-#define W "z"
-#elif SIZEOF_UNSIGNED_LONG_LONG == 8
-typedef unsigned long long usize_t;
 #define W "ll"
-#endif /* typedef and #define W */
-
 #define SIZEOF_USIZE_T 8
 
 #else /* XD3_USE_LARGESIZET == 0 */
 
-#if SIZEOF_UNSIGNED_INT == 4
-typedef unsigned int usize_t;
-#elif SIZEOF_UNSIGNED_LONG == 4
-typedef unsigned long usize_t;
-#else
 typedef uint32_t usize_t;
-#endif /* usize_t is 32 bits */
-
-#define SIZEOF_USIZE_T 4
 #define W
+#define SIZEOF_USIZE_T 4
 
 #endif /* 64 vs 32 bit usize_t */