[Tile-serving] [openstreetmap/mod_tile] Added build & test on Fedora 34 (#248)

[Tom Hughes]

@tomhughes commented on this pull request.



> @@ -41,6 +41,11 @@ jobs:
         run: ./autogen.sh
       - name: Run `./configure`
         run: ./configure
+      - name: Fix `-pthread` in `GLIB_CFLAGS`

So the `glib-2.0` pkg-config module quite reasonably includes `-pthread` in the compiler flags - it is a valid compiler flag and it does a bit more than just linking the library.

The makefile then passes `$(GLIB_CFLAGS)` when invoking `apxs` but apxs only actually understands a handful of common compiler flags like `-D`, `-I` and `-l` so that is kind of buggy really - other flags need a `-Wc` to tell it they are a compiler bug.

So for apxs you really want `-Wc,-pthread` as the argument.

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