Load X11 dynamically

The loaders have been generated through hpvb's dynload-wrapper, although
they had to be heavily handpatched to workaround some already reported
issues with it. I added a note to each generated file to account for
that.

As GLAD uses X11 stuff directly, I had to define the GLAD_GLX_NO_X11
macro to not let do it that, and handle myself the display loading and
screen handling part myself, which wasn't that hard but it's still
something worth saying.

I plan to improve greatly the X11 backend (including this aspect) but,
as the release isn't that far and I'm also working on the Wayland
backend, this will do for now, I hope.

1 files changed, 154 insertions, 0 deletions

diff --git a/platform/linuxbsd/x11/dynwrappers/xext-so_wrap.c b/platform/linuxbsd/x11/dynwrappers/xext-so_wrap.c
new file mode 100644
index 0000000000..711dd3fa5e
--- /dev/null
+++ b/platform/linuxbsd/x11/dynwrappers/xext-so_wrap.c
@@ -0,0 +1,154 @@
+// This file is generated. Do not edit!
+// see https://github.com/hpvb/dynload-wrapper for details
+// generated by ./generate-wrapper.py 0.3 on 2022-12-02 12:51:55
+// flags: ./generate-wrapper.py --include /usr/include/X11/extensions/Xext.h --sys-include <X11/extensions/Xext.h> --include /usr/include/X11/extensions/shape.h --sys-include <X11/extensions/shape.h> --soname libXext.so.6 --init-name xext --output-header xext-so_wrap.h --output-implementation xext-so_wrap.c
+//
+// NOTE: Generated from Xext 1.3.5.
+// This has been handpatched to workaround some issues with the generator that
+// will be eventually fixed. In this case, non-existant symbols inherited from
+// libX11, but absent in libXext.so.6, were removed and an include needed for
+// proper parsing was added (this had also to be temporarily added to the
+// original header, as dynload-wrapper would complain otherwsise)
+#include <stdint.h>
+
+// HANDPATCH: Needed for a successful compilation.
+#include <X11/Xlib.h>
+
+#define XShapeQueryExtension XShapeQueryExtension_dylibloader_orig_xext
+#define XShapeQueryVersion XShapeQueryVersion_dylibloader_orig_xext
+#define XShapeCombineRegion XShapeCombineRegion_dylibloader_orig_xext
+#define XShapeCombineRectangles XShapeCombineRectangles_dylibloader_orig_xext
+#define XShapeCombineMask XShapeCombineMask_dylibloader_orig_xext
+#define XShapeCombineShape XShapeCombineShape_dylibloader_orig_xext
+#define XShapeOffsetShape XShapeOffsetShape_dylibloader_orig_xext
+#define XShapeQueryExtents XShapeQueryExtents_dylibloader_orig_xext
+#define XShapeSelectInput XShapeSelectInput_dylibloader_orig_xext
+#define XShapeInputSelected XShapeInputSelected_dylibloader_orig_xext
+#define XShapeGetRectangles XShapeGetRectangles_dylibloader_orig_xext
+#include <X11/extensions/Xext.h>
+#include <X11/extensions/shape.h>
+#undef XShapeQueryExtension
+#undef XShapeQueryVersion
+#undef XShapeCombineRegion
+#undef XShapeCombineRectangles
+#undef XShapeCombineMask
+#undef XShapeCombineShape
+#undef XShapeOffsetShape
+#undef XShapeQueryExtents
+#undef XShapeSelectInput
+#undef XShapeInputSelected
+#undef XShapeGetRectangles
+#include <dlfcn.h>
+#include <stdio.h>
+int (*XShapeQueryExtension_dylibloader_wrapper_xext)( Display*, int*, int*);
+int (*XShapeQueryVersion_dylibloader_wrapper_xext)( Display*, int*, int*);
+void (*XShapeCombineRegion_dylibloader_wrapper_xext)( Display*, Window, int, int, int, Region, int);
+void (*XShapeCombineRectangles_dylibloader_wrapper_xext)( Display*, Window, int, int, int, XRectangle*, int, int, int);
+void (*XShapeCombineMask_dylibloader_wrapper_xext)( Display*, Window, int, int, int, Pixmap, int);
+void (*XShapeCombineShape_dylibloader_wrapper_xext)( Display*, Window, int, int, int, Window, int, int);
+void (*XShapeOffsetShape_dylibloader_wrapper_xext)( Display*, Window, int, int, int);
+int (*XShapeQueryExtents_dylibloader_wrapper_xext)( Display*, Window, int*, int*, int*, unsigned int*, unsigned int*, int*, int*, int*, unsigned int*, unsigned int*);
+void (*XShapeSelectInput_dylibloader_wrapper_xext)( Display*, Window, unsigned long);
+unsigned long (*XShapeInputSelected_dylibloader_wrapper_xext)( Display*, Window);
+XRectangle* (*XShapeGetRectangles_dylibloader_wrapper_xext)( Display*, Window, int, int*, int*);
+int initialize_xext(int verbose) {
+  void *handle;
+  char *error;
+  handle = dlopen("libXext.so.6", RTLD_LAZY);
+  if (!handle) {
+    if (verbose) {
+      fprintf(stderr, "%s\n", dlerror());
+    }
+    return(1);
+  }
+  dlerror();
+// XShapeQueryExtension
+  *(void **) (&XShapeQueryExtension_dylibloader_wrapper_xext) = dlsym(handle, "XShapeQueryExtension");
+  if (verbose) {
+    error = dlerror();
+    if (error != NULL) {
+      fprintf(stderr, "%s\n", error);
+    }
+  }
+// XShapeQueryVersion
+  *(void **) (&XShapeQueryVersion_dylibloader_wrapper_xext) = dlsym(handle, "XShapeQueryVersion");
+  if (verbose) {
+    error = dlerror();
+    if (error != NULL) {
+      fprintf(stderr, "%s\n", error);
+    }
+  }
+// XShapeCombineRegion
+  *(void **) (&XShapeCombineRegion_dylibloader_wrapper_xext) = dlsym(handle, "XShapeCombineRegion");
+  if (verbose) {
+    error = dlerror();
+    if (error != NULL) {
+      fprintf(stderr, "%s\n", error);
+    }
+  }
+// XShapeCombineRectangles
+  *(void **) (&XShapeCombineRectangles_dylibloader_wrapper_xext) = dlsym(handle, "XShapeCombineRectangles");
+  if (verbose) {
+    error = dlerror();
+    if (error != NULL) {
+      fprintf(stderr, "%s\n", error);
+    }
+  }
+// XShapeCombineMask
+  *(void **) (&XShapeCombineMask_dylibloader_wrapper_xext) = dlsym(handle, "XShapeCombineMask");
+  if (verbose) {
+    error = dlerror();
+    if (error != NULL) {
+      fprintf(stderr, "%s\n", error);
+    }
+  }
+// XShapeCombineShape
+  *(void **) (&XShapeCombineShape_dylibloader_wrapper_xext) = dlsym(handle, "XShapeCombineShape");
+  if (verbose) {
+    error = dlerror();
+    if (error != NULL) {
+      fprintf(stderr, "%s\n", error);
+    }
+  }
+// XShapeOffsetShape
+  *(void **) (&XShapeOffsetShape_dylibloader_wrapper_xext) = dlsym(handle, "XShapeOffsetShape");
+  if (verbose) {
+    error = dlerror();
+    if (error != NULL) {
+      fprintf(stderr, "%s\n", error);
+    }
+  }
+// XShapeQueryExtents
+  *(void **) (&XShapeQueryExtents_dylibloader_wrapper_xext) = dlsym(handle, "XShapeQueryExtents");
+  if (verbose) {
+    error = dlerror();
+    if (error != NULL) {
+      fprintf(stderr, "%s\n", error);
+    }
+  }
+// XShapeSelectInput
+  *(void **) (&XShapeSelectInput_dylibloader_wrapper_xext) = dlsym(handle, "XShapeSelectInput");
+  if (verbose) {
+    error = dlerror();
+    if (error != NULL) {
+      fprintf(stderr, "%s\n", error);
+    }
+  }
+// XShapeInputSelected
+  *(void **) (&XShapeInputSelected_dylibloader_wrapper_xext) = dlsym(handle, "XShapeInputSelected");
+  if (verbose) {
+    error = dlerror();
+    if (error != NULL) {
+      fprintf(stderr, "%s\n", error);
+    }
+  }
+// XShapeGetRectangles
+  *(void **) (&XShapeGetRectangles_dylibloader_wrapper_xext) = dlsym(handle, "XShapeGetRectangles");
+  if (verbose) {
+    error = dlerror();
+    if (error != NULL) {
+      fprintf(stderr, "%s\n", error);
+    }
+  }
+return 0;
+}