test: run make check for Arb

Author: oscarbenjamin

bin/build_dependencies_unix.sh

@@ -178,12 +178,11 @@ cd arb-$ARBVER
   make -j3
   make install
   #
-  # Here make check passes for Linux and OSX but fails for Windows probably
-  # because of a linker error or something like that. It would be nice to
-  # enable this check when it can work for Windows but for now we disable it
-  # because if it fails then we don't get any wheels built.
+  # Set PATH so that DLLs are picked up on Windows.
   #
-  # ARB_TEST_MULTIPLIER=0.1 make check
+  PATH=$PATH:$PREFIX/lib:$PREFIX/bin \
+  ARB_TEST_MULTIPLIER=0.1            \
+  make check
 cd ..
 
 # ------------------------------------------------------------------------- #