zsh-link-with-curses.patch

From e56bf700acaf4a50143daec16208ab86c8586f9c Mon Sep 17 00:00:00 2001
From: Sebastian Gniazdowski <[email protected]>
Date: Thu, 3 Oct 2019 15:54:17 +0200
Subject: [PATCH] configure: Link with ncurses if (and even) it doesn't provide
 tgetent, to build the module. Also link with tinfow (not only tinfo)

The patch is useful on e.g. Gentoo, where the ncurses library doesn't provide the tgetent call.

---
 configure.ac | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/configure.ac b/configure.ac
index b31b1d958..c33188561 100644
--- a/configure.ac
+++ b/configure.ac
@@ -774,7 +774,7 @@ AS_HELP_STRING([--with-term-lib=LIBS],[search space-separated LIBS for terminal
   termcap_curses_order="$withval"
   AC_SEARCH_LIBS(tigetstr, [$termcap_curses_order])
 else
-  termcap_curses_order="$ncursesw_test $ncurses_test tinfo termcap curses"
+  termcap_curses_order="$ncursesw_test $ncurses_test tinfow tinfo termcap curses"
 fi],
 [case "$host_os" in
   solaris*)
@@ -783,7 +783,7 @@ fi],
    DL_EXT="${DL_EXT=sl}"
    termcap_curses_order="Hcurses $ncursesw_test $ncurses_test curses termcap" ;;
   *)
-   termcap_curses_order="$ncursesw_test $ncurses_test tinfo termcap curses" ;;
+   termcap_curses_order="$ncursesw_test $ncurses_test tinfow tinfo termcap curses" ;;
 esac])dnl
 
 AH_TEMPLATE([ZSH_NO_XOPEN],
@@ -831,7 +831,18 @@ AC_CACHE_CHECK(if we need to ignore ncurses, zsh_cv_ignore_ncurses,
   zsh_cv_ignore_ncurses=no
   ;;
   *)
-  zsh_cv_ignore_ncurses=yes
+    dnl If the tgetent nor tigetflag weren't found in the libncurses*.so, then
+    dnl there will be no conflict with the other terminal library selected (e.g.
+    dnl libtinfo) and it's possible to link ncurses provided that it is working
+    AC_SEARCH_LIBS(initscr, [ncursesw ncurses curses])
+    case $LIBS in
+      *-lncurses*|*-lcurses*)
+      zsh_cv_ignore_ncurses=no
+      ;;
+      *)
+      zsh_cv_ignore_ncurses=yes
+      ;;
+    esac
   ;;
 esac])
 
-- 
2.21.0