From ad442a818c6eefabb8258a9949206e12f2296161 Mon Sep 17 00:00:00 2001
From: Karel Zak <kzak@redhat.com>
Date: Tue, 19 Sep 2017 12:55:49 +0200
Subject: [PATCH] build-sys: add libtinfow check

It seems some systems differentiate between tinfo and tinfow. And it
seems that mix ncursesw and tinfo (wide vs. non-wide char) is problem
for the systems.

Note that for example Fedora have ncursesw as well as ncurses, but
only one tinfo library. So, we need fallback this scenario.

Reported-by: Stanislav Brabec <sbrabec@suse.cz>
Signed-off-by: Karel Zak <kzak@redhat.com>
---
 configure.ac | 24 +++++++++---------------
 m4/ul.m4     | 27 +++++++++++++++++++++++++++
 2 files changed, 36 insertions(+), 15 deletions(-)

diff --git a/configure.ac b/configure.ac
index c534b49f2..73cf22168 100644
--- a/configure.ac
+++ b/configure.ac
@@ -905,27 +905,21 @@ AC_ARG_WITH([tinfo], AS_HELP_STRING([--without-tinfo], [compile without libtinfo
   [], [with_tinfo=auto]
 )
 have_tinfo=no
+have_tinfow=no
 AS_IF([test "x$with_tinfo" != xno], [
-  dnl Try pkg-config for libtinfo
-  PKG_CHECK_MODULES(TINFO, [tinfo], [
-    dnl pkg-config success
-    have_tinfo=yes
-    UL_PKG_STATIC([TINFO_LIBS_STATIC], [tinfo])], [
-
-    dnl If pkg-config failed, fall back to classic searching.
-    AC_CHECK_LIB([tinfo], [tgetent], [
-       have_tinfo=yes
-       TINFO_LIBS="-ltinfo"
-       TINFO_LIBS_STATIC="-ltinfo"
-       TINFO_CFLAGS=""])
+  AS_IF([test "x$have_ncursesw" = xyes], [
+    UL_TINFO_CHECK([tinfow])
+  ])
+  AS_IF([test "x$have_tinfow" = xno], [
+    UL_TINFO_CHECK([tinfo])
   ])
 ])
 AC_SUBST([TINFO_LIBS])
 AC_SUBST([TINFO_LIBS_STATIC])
 AC_SUBST([TINFO_CFLAGS])
-AM_CONDITIONAL([HAVE_TINFO], [test "x$have_tinfo" = xyes])
-AS_IF([test "x$have_tinfo" = xyes], [
-  AC_DEFINE(HAVE_LIBTINFO, 1, [Define if libtinfo available.])
+AM_CONDITIONAL([HAVE_TINFO], [test "x$have_tinfo" = xyes -o "x$have_tinfow" = xyes])
+AS_IF([test "x$have_tinfo" = xyes -o "x$have_tinfow" = xyes], [
+  AC_DEFINE(HAVE_LIBTINFO, 1, [Define if libtinfo or libtinfow available.])
 ])
 
 
diff --git a/m4/ul.m4 b/m4/ul.m4
index cfd2e68fc..351d9cb6b 100644
--- a/m4/ul.m4
+++ b/m4/ul.m4
@@ -498,3 +498,30 @@ AC_DEFUN([UL_NCURSES_CHECK], [
     AS_IF([test "x$have_[]suffix" = xyes], [NCURSES_LIBS="-l[]suffix"])
   ])
 ])
+
+dnl
+dnl UL_TINFO_CHECK(NAME)
+dnl
+dnl Initializes $have_<name>, TINFO_LIBS and TINFO_CFLAGS variables.
+dnl
+dnl The expected <name> is tinfow or tinfo.
+dnl
+AC_DEFUN([UL_TINFO_CHECK], [
+  m4_define([suffix], $1)
+  m4_define([SUFFIX], m4_toupper($1))
+
+  PKG_CHECK_MODULES(SUFFIX, [$1], [
+    dnl pkg-config success
+    have_[]suffix=yes
+    TINFO_LIBS=${SUFFIX[]_LIBS}
+    TINFO_CFLAGS=${SUFFIX[]_CFLAGS}
+    UL_PKG_STATIC([TINFO_LIBS_STATIC], [$1])
+  ],[
+    dnl If pkg-config failed, fall back to classic searching.
+    AC_CHECK_LIB([$1], [tgetent], [
+       have_[]suffix=yes
+       TINFO_LIBS="-l[]suffix"
+       TINFO_LIBS_STATIC="-l[]suffix"
+       TINFO_CFLAGS=""])
+  ])
+])
-- 
2.14.1