https://github.com/termux/termux-packages/issues/15852

--- a/configure
+++ b/configure
@@ -1013,6 +1013,7 @@
 #line 1014 "configure"
 #include "confdefs.h"
 
+int
 main(){return(0);}
 EOF
 if { (eval echo configure:1019: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
@@ -1338,6 +1339,7 @@
 #line 1339 "configure"
 #include "confdefs.h"
 #include <stdio.h>
+int
 main()
 {
   FILE *f=fopen("conftestval", "w");
@@ -1377,6 +1379,7 @@
 #line 1378 "configure"
 #include "confdefs.h"
 #include <stdio.h>
+int
 main()
 {
   FILE *f=fopen("conftestval", "w");
@@ -1416,6 +1419,7 @@
 #line 1417 "configure"
 #include "confdefs.h"
 #include <stdio.h>
+int
 main()
 {
   FILE *f=fopen("conftestval", "w");
@@ -5812,6 +5816,7 @@
   cat > conftest.$ac_ext <<EOF
 #line 5814 "configure"
 #include "confdefs.h"
+int
 find_stack_direction ()
 {
   static char *addr = 0;
@@ -5824,6 +5829,7 @@
   else
     return (&dummy > addr) ? 1 : -1;
 }
+int
 main ()
 {
   exit (find_stack_direction() < 0);