libllvm: Support building with ninja

packages/libllvm/build.sh

@@ -96,7 +96,13 @@ termux_step_post_make_install () {
 	else
 		cp ../src/projects/openmp/runtime/exports/common.min.50.ompt.optional/include/omp.h $TERMUX_PREFIX/include
 	fi
-	make docs-llvm-man
+
+	if [ $TERMUX_CMAKE_BUILD = Ninja ]; then
+		ninja docs-llvm-man
+	else
+		make docs-llvm-man
+	fi
+
 	cp docs/man/* $TERMUX_PREFIX/share/man/man1
 	cd $TERMUX_PREFIX/bin