lowlevel.md: mention adding to mw/lowlevel.h

doc/BACKENDDEV.md

@@ -8,9 +8,11 @@ The basic process of creating a new Milsko backend is
   - `struct _MwLLBackendNamePixmap`: Self-explanatory. This is also used for the soft gradients in the modern theme.
   - `MwLLBackendNameCallInitImpl(void)` called by `MwLibraryInit` to address and platform globals.
   - Note that all of those structs are actually unions. They should all start with their `MwLLCommon...` equivalants.
+- Fill out `Mw/LowLevel.h` appopriately, adding an include to your new file and the structs in the appropriate unions. These need to be guarded by a `USE_BACKENDNAME` macro which you'll define later when you modify the build system.
 - Creating a new impl file in `src/backend`
   - Backends actually return a table of function pointers that you have to implement with static functions. Your file should end with `#include "call.c"` and then `CALL(BackendName);`, and somewhere you should have the impl for `MwLLBackendNameCallInitImpl(void)`.
 - Add `MwLLBackendNameCallInitImpl` to the `MwLibraryInit` impl in `src/core.c`.
+- Add a new enum variation to `MwLLBackends` in `Mw/Include/LowLevel.h`; your impl of `MwLLCreateImpl` will set `common.type` to this so the user can check which backend they're on (important for platforms with multiple supported backends).
 - Either
   - a.) Modify `CMakeLists.txt` for your platform.
   - b.) Add a new perl file in `pl/ostype` that `./configure` can reference, and modify `pl/rules.pl`; If you don't know how to use perl it's fine, just copy a file like the `Linux.pl` or `Windows.pl`, the functions you'll have to change for your platform are self explanatory. Ensure it ends with `1;`.

include/Mw/LowLevel/Wayland.h

@@ -139,19 +139,31 @@ extern wayland_call_table_t wl_call_tbl;
 extern MwBool		    MwWaylandAlwaysRender;
 /* defined inline right here so that it doesn't conflict with the other macros */
 MwInline int wayland_load_funcs() {
+#ifdef __APPLE__
+	wl_call_tbl.lib = MwDynamicOpen("libwayland-client.dylib");
+#else
 	wl_call_tbl.lib = MwDynamicOpen("libwayland-client.so");
+#endif
 	if(!wl_call_tbl.lib) {
-		printf("(libwayland-client.so not found, falling back to X11)\n");
+		printf("(libwayland-client not found, falling back to X11)\n");
 		return 1;
 	}
+#ifdef __APPLE__
+	wl_call_tbl.xkb_lib = MwDynamicOpen("libxkbcommon.dylib");
+#else
 	wl_call_tbl.xkb_lib = MwDynamicOpen("libxkbcommon.so");
+#endif
 	if(!wl_call_tbl.xkb_lib) {
-		printf("(libxkbcommon.so not found, cannot use Wayland backend.)\n");
+		printf("(libxkbcommon not found, cannot use Wayland backend.)\n");
 		return 1;
 	}
+#ifdef __APPLE__
+	wl_call_tbl.cairo_lib = MwDynamicOpen("libcairo.dylib");
+#else
 	wl_call_tbl.cairo_lib = MwDynamicOpen("libcairo.so");
+#endif
 	if(!wl_call_tbl.cairo_lib) {
-		printf("(libcairo.so not found, cannot use Wayland backend.)\n");
+		printf("(libcairo not found, cannot use Wayland backend.)\n");
 		return 1;
 	}
 #define WAYLAND_FUNC(x) \