$NetBSD: patch-ac,v 1.3 2025/10/12 01:32:11 mrg Exp $

--- configure.orig	2001-04-26 07:44:54.000000000 -0700
+++ configure	2025-10-11 18:05:18.572989322 -0700
@@ -1005,7 +1005,7 @@ cat > conftest.$ac_ext << EOF
 #line 1006 "configure"
 #include "confdefs.h"
 
-main(){return(0);}
+int main(){return(0);}
 EOF
 if { (eval echo configure:1011: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   ac_cv_prog_cc_works=yes
@@ -1957,6 +1957,9 @@ if test "${with_curses_driver+set}" = se
 
 fi
 
+test "x$SLANG_PREFIX" != x || SLANG_PREFIX=/usr/local
+test "x$NCURSES_PREFIX" != x || NCURSES_PREFIX=/usr/local
+
 # Check whether --with-gpm-mouse or --without-gpm-mouse was given.
 if test "${with_gpm_mouse+set}" = set; then
   withval="$with_gpm_mouse"
@@ -3145,7 +3148,7 @@ EOF
   
     if $search_slang
     then
-        if test -f /usr/local/include/slang.h
+        if test -f $SLANG_PREFIX/include/slang.h
 	then
 	    LIBS1="$LIBS"
  	    LIBS="$LIBS "
@@ -3197,10 +3200,10 @@ else
 fi
 
             if test "x$ac_cv_lib_slang_SLsmg_init_smg" = xyes; then 
-	      echo "$ac_t""Found slang on /usr/local/include/slang.h" 1>&6
+	      echo "$ac_t""Found slang on $SLANG_PREFIX/include/slang.h" 1>&6
 	      AALIB_LIBS="$AALIB_LIBS  -lslang"
  	      LIBS="$LIBS "
-	      CFLAGS="$CFLAGS -I/usr/local/include/slang "
+	      CFLAGS="$CFLAGS -I$SLANG_PREFIX/include/slang "
               slang_driver=true
 	      search_slang=false
 	      cat >> confdefs.h <<\EOF
@@ -3453,7 +3456,7 @@ EOF
     
     if $search_ncurses
     then
-        if test -f /usr/local/include/ncurses.h
+        if test -f NCURSES_PREFIX/include/ncurses.h
 	then
 	    LIBS1="$LIBS"
  	    LIBS="$LIBS "
@@ -3505,13 +3508,13 @@ else
 fi
 
             if test "x$ac_cv_lib_ncurses_initscr" = xyes; then 
-	      echo "$ac_t""Found ncurses on /usr/local/include/ncurses.h" 1>&6
+	      echo "$ac_t""Found ncurses on NCURSES_PREFIX/include/ncurses.h" 1>&6
 	      AALIB_LIBS="$AALIB_LIBS  -lncurses"
  	      LIBS="$LIBS "
-	      CFLAGS="$CFLAGS -L/usr/local/lib"
+	      CFLAGS="$CFLAGS -LNCURSES_PREFIX/lib"
 	      search_ncurses=false
               curses_driver=true
-	      screen_manager=-I/usr/local/include
+	      screen_manager=-INCURSES_PREFIX/include
 	      cat >> confdefs.h <<\EOF
 #define USE_NCURSES 1
 EOF