diff -urNp ghc-9.2.8-orig/configure ghc-9.2.8-dwok/configure
--- ghc-9.2.8-orig/configure	2023-05-26 12:58:09.000000000 +0200
+++ ghc-9.2.8-dwok/configure	2023-12-27 10:39:41.036001901 +0100
@@ -16673,6 +16673,7 @@ else $as_nop
 struct nlist xYzzY1[] = {{"xYzzY1", 0},{0}};
 struct nlist xYzzY2[] = {{"_xYzzY2", 0},{0}};
 #endif
+#include <stdlib.h>
 
 int main(argc, argv)
 int argc;
diff -urNp ghc-9.2.8-orig/m4/fp_leading_underscore.m4 ghc-9.2.8-dwok/m4/fp_leading_underscore.m4
--- ghc-9.2.8-orig/m4/fp_leading_underscore.m4	2023-05-26 01:03:00.000000000 +0200
+++ ghc-9.2.8-dwok/m4/fp_leading_underscore.m4	2023-12-27 10:40:15.655892509 +0100
@@ -31,6 +31,7 @@ case $TargetPlatform in
 struct nlist xYzzY1[] = {{"xYzzY1", 0},{0}};
 struct nlist xYzzY2[] = {{"_xYzzY2", 0},{0}};
 #endif
+#include <stdlib.h>
 
 int main(argc, argv)
 int argc;