Fix make compatibility issues

_gtfobins/make.md

@@ -1,18 +1,8 @@
 ---
 description: |
   All these examples only work with GNU `make` due to the lack of support of the
-  `--eval` flag. The same can be achieved by using a proper `Makefile` of by
-  passing the content via stdin, that is:
-
-  ```
-  make -s --eval=<commands>
-  ```
-
-  becomes:
-
-  ```
-  make -s -f <(echo <commands>)
-  ```
+  `--eval` flag. The same can be achieved by using a proper `Makefile` or by
+  passing the content via stdin using `-f -`.
 functions:
   execute-interactive:
     - code: |
@@ -27,7 +17,8 @@ functions:
         COMMAND='/bin/sh -p'
         ./make -s --eval=$'x:\n\t-'"$COMMAND"
   file-write:
-    - code: |
+    - description: Requires a newer GNU `make` version.
+      code: |
         LFILE=file_to_write
         make -s --eval="\$(file >$LFILE,data)" .
 ---