--- a/JPEG/jpeg/configure	2013-11-15 18:50:03.000000000 -0500
+++ b/JPEG/jpeg/configure	2023-09-05 23:36:12.675151164 -0400
@@ -623,7 +623,7 @@
 cat > conftest.$ac_ext <<EOF
 #line 625 "configure"
 #include "confdefs.h"
-main(){return(0);}
+int main(){return(0);}
 EOF
 if { (eval echo configure:629: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   ac_cv_prog_cc_works=yes