Migrate eglew.h to incorporate EGL_CAST tokens

Extensions, especially EGL, now have tokens like:

EGL_TIMESTAMP_PENDING_ANDROID EGL_CAST(EGLnsecsANDROID,-2)
EGL_COLORSPACE_sRGB 0x3089
EGL_NO_NATIVE_FENCE_FD_ANDROID -1

.gitea/workflows/linux-clang.yaml

@@ -0,0 +1,22 @@
+name: Ubuntu Linux clang Build
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Install Dependencies
+        run: |
+          apt update
+          apt install -y clang libxmu-dev libxi-dev libgl-dev libegl1-mesa-dev dos2unix
+      - name: Git Checkout
+        uses: actions/checkout@v4
+      - name: Generate Code
+        run: |
+          make -C auto clobber
+          make extensions
+          make dist-src
+      - name: Build Binaries
+        run: |
+          make clean && SYSTEM=linux-clang      make
+          make clean && SYSTEM=linux-clang-egl  make

.gitea/workflows/linux-cmake.yaml

@@ -0,0 +1,38 @@
+name: Ubuntu Linux cmake Build
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        flavour: [
+          "-DCMAKE_BUILD_TYPE=Debug -DGLEW_X11=Y -DGLEW_EGL=N -DBUILD_SHARED_LIBS=N",
+          "-DCMAKE_BUILD_TYPE=Debug -DGLEW_X11=N -DGLEW_EGL=Y -DBUILD_SHARED_LIBS=N",
+          "-DCMAKE_BUILD_TYPE=Debug -DGLEW_X11=Y -DGLEW_EGL=N -DBUILD_SHARED_LIBS=Y",
+          "-DCMAKE_BUILD_TYPE=Debug -DGLEW_X11=N -DGLEW_EGL=Y -DBUILD_SHARED_LIBS=Y",
+          "-DCMAKE_BUILD_TYPE=Release -DGLEW_X11=Y -DGLEW_EGL=N -DBUILD_SHARED_LIBS=N",
+          "-DCMAKE_BUILD_TYPE=Release -DGLEW_X11=N -DGLEW_EGL=Y -DBUILD_SHARED_LIBS=N",
+          "-DCMAKE_BUILD_TYPE=Release -DGLEW_X11=Y -DGLEW_EGL=N -DBUILD_SHARED_LIBS=Y",
+          "-DCMAKE_BUILD_TYPE=Release -DGLEW_X11=N -DGLEW_EGL=Y -DBUILD_SHARED_LIBS=Y",
+          ]
+    steps:
+      - name: Install Dependencies
+        run: |
+          apt update
+          apt install -y cmake ninja-build libxmu-dev libxi-dev libgl-dev libegl1-mesa-dev dos2unix
+      - name: Git Checkout
+        uses: actions/checkout@v4
+      - name: Generate Code
+        run: |
+          make -C auto clobber
+          make extensions
+          make dist-src
+      - name: Build Binaries
+        run: |
+          mkdir build_
+          cmake build/cmake -B build_ -G Ninja --fresh ${{ matrix.flavour }}
+          cmake --build build_
+          rm -Rf build_
+
+

.gitea/workflows/linux-gcc.yaml

@@ -0,0 +1,22 @@
+name: Ubuntu Linux gcc Build
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Install Dependencies
+        run: |
+          apt update
+          apt install -y libxmu-dev libxi-dev libgl-dev libegl1-mesa-dev dos2unix
+      - name: Git Checkout
+        uses: actions/checkout@v4
+      - name: Generate Code
+        run: |
+          make -C auto clobber
+          make extensions
+          make dist-src
+      - name: Build Binaries
+        run: |
+          make clean && SYSTEM=linux            make
+          make clean && SYSTEM=linux-egl        make

.gitea/workflows/linux-mingw.yaml

@@ -0,0 +1,22 @@
+name: Ubuntu Linux gcc cross-build
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Install Dependencies
+        run: |
+          apt update
+          apt install -y mingw-w64 dos2unix
+      - name: Git Checkout
+        uses: actions/checkout@v4
+      - name: Generate Code
+        run: |
+          make -C auto clobber
+          make extensions
+          make dist-src
+      - name: Build Binaries
+        run: |
+          make clean && SYSTEM=linux-mingw32 make
+          make clean && SYSTEM=linux-mingw64 make

auto/bin/make.pl

@@ -11,7 +11,7 @@ my %regex = (
     extname  => qr/^[A-Z][A-Za-z0-9_]+$/,
     exturl   => qr/^http.+$/,
     function => qr/^(.+) ([a-z][a-z0-9_]*) \((.*)\)$/i,
-    token    => qr/^([A-Z][A-Z0-9_x]*)\s+((?:0x)?[0-9A-Fa-f]+(u(ll)?)?|[A-Z][A-Z0-9_]*)$/,
+    token    => qr/^([A-Z][A-Za-z0-9_x]*)\s+((?:0x|-)?[0-9A-Fa-f]+(u(ll)?)?|[A-Z][A-Za-z0-9(),_-]*)$/,
     type     => qr/^typedef\s+(.+)$/,
     exact    => qr/.*;$/,
 );

auto/src/eglew_head.h

@@ -83,16 +83,4 @@ struct wl_buffer;
 struct wl_display;
 struct wl_resource;
 
-#define EGL_DONT_CARE                     ((EGLint)-1)
-
-#define EGL_NO_CONTEXT                    ((EGLContext)0)
-#define EGL_NO_DISPLAY                    ((EGLDisplay)0)
-#define EGL_NO_IMAGE                      ((EGLImage)0)
-#define EGL_NO_SURFACE                    ((EGLSurface)0)
-#define EGL_NO_SYNC                       ((EGLSync)0)
-
-#define EGL_UNKNOWN                       ((EGLint)-1)
-
-#define EGL_DEFAULT_DISPLAY               ((EGLNativeDisplayType)0)
-
 EGLAPI __eglMustCastToProperFunctionPointerType EGLAPIENTRY eglGetProcAddress (const char *procname);

auto/src/glew_init_tail.c

@@ -66,3 +66,14 @@ int __stdcall DllMainCRTStartup(void* instance, unsigned reason, void* reserved)
   return 1;
 }
 #endif
+
+#if defined(_WIN32) && defined(GLEW_BUILD) && defined(__clang__)
+/* Windows mingw clang requires a DLL entry point */
+int __stdcall _DllMainCRTStartup(void* instance, unsigned reason, void* reserved)
+{
+  (void) instance;
+  (void) reason;
+  (void) reserved;
+  return 1;
+}
+#endif

config/Makefile.linux-mingw64-clang

@@ -0,0 +1,26 @@
+# For cross-compiling from Linux to Windows 64-bit using LLVM MinGW
+# https://github.com/mstorsjo/llvm-mingw
+#
+# Ubuntu/Debian:
+# $ make SYSTEM=linux-mingw64-clang
+#
+# Note: It is likely necessary to configure LDFLAGS.GL to reflect the location
+#       of the Windows link libraries
+
+NAME      := glew32
+HOST      := x86_64-w64-mingw32
+GLEW_DEST ?= /usr/local/$(HOST)
+CC    := $(HOST)-clang
+LD    := $(HOST)-ld
+LN    :=
+STRIP :=
+LDFLAGS.GL = -L/opt/llvm-mingw-20250613-msvcrt-ubuntu-22.04-x86_64/x86_64-w64-mingw32/lib -lopengl32 -lgdi32 -luser32 -lkernel32 -lmsvcrt
+CFLAGS.EXTRA  += -fno-stack-protector -Wno-cast-function-type
+WARN = -Wall -W
+POPT = -O2
+BIN.SUFFIX = .exe
+LIB.SONAME    = lib$(NAME).dll
+LIB.DEVLNK    = lib$(NAME).dll.a    # for mingw this is the dll import lib
+LIB.SHARED    = $(NAME).dll
+LIB.STATIC    = lib$(NAME).a        # the static lib will be broken
+LDFLAGS.SO    = -shared --out-implib lib/$(LIB.DEVLNK)