Use --host=$(MACHINE) instead of --build=<hard coded triple>

dep.mk

@@ -19,14 +19,7 @@ DEP_CXXFLAGS += $(DEP_FLAGS)
 WGET := wget -c
 UNTAR := tar xf
 UNZIP := unzip -o
-CONFIGURE := ./configure --prefix="$(DEP_PATH)"
-ifdef ARCH_WIN
-	CONFIGURE += --build=x86_64-w64-mingw32
-else ifdef ARCH_MAC
-	CONFIGURE += --build=x86_64-apple-darwin
-else ifdef ARCH_LIN
-	CONFIGURE += --build=x86_64-unknown-linux-gnu
-endif
+CONFIGURE := ./configure --prefix="$(DEP_PATH)" --host=$(MACHINE)
 
 ifdef ARCH_WIN
 	CMAKE := cmake -G 'MSYS Makefiles' -DCMAKE_INSTALL_PREFIX="$(DEP_PATH)"