From 9722743aa38475447188dfbbeaf7cabe76475be6 Mon Sep 17 00:00:00 2001
From: Abishek V Ashok <abishekvashok@gmail.com>
Date: Wed, 28 Dec 2022 20:19:41 +0530
Subject: [PATCH 1/2] Bug fix: Linker errors using automake in Mac OS

Fix linker issues that prevent compillation with gcc from succeeding
using autotools.

This allows compilation to succeeed in Mac OS - haven't tested on linux
yet.

Fixes: #161
Signed-off-by: Abishek V Ashok <abishekvashok@gmail.com>
---
 configure.ac | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 0565a52..b635b1c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -6,11 +6,16 @@ AM_CONFIG_HEADER(config.h)
 AM_INIT_AUTOMAKE
 
 AC_CANONICAL_HOST
+host_osx=no
+native_windows=no
 case $host in
   *mingw*)
+    native_windows=yes
+    ;;
+  *darwin*)
+    host_osx=yes
     ;;
   *)
-    native_windows=no
     ;;
 esac
 
@@ -83,6 +88,11 @@ if test x$native_windows != xno; then
   CFLAGS="$CFLAGS -static"
 fi
 
+dnl Add -D_XOPEN_SOURCE_EXTENDED to enable wide char support in Mac OS
+if test x$host_osx != xno; then
+  CFLAGS="$CFLAGS -D_XOPEN_SOURCE_EXTENDED"
+fi
+
 dnl cmatrix terminal font disable option (default enabled)
 AC_ARG_WITH([fonts],
 	AS_HELP_STRING([--without-fonts], [Install cmatrix without cmatrix font]),

From 52495a1f2027d6cd3c2a5b57b40ce5a6bdfd35e3 Mon Sep 17 00:00:00 2001
From: Abishek V Ashok <abishekvashok@gmail.com>
Date: Thu, 29 Dec 2022 13:26:23 +0530
Subject: [PATCH 2/2] Adds checks for libncursesw

Adds checks for libncursesw as some linux distributions like ubuntu
package wide character support for ncurses as a seperate library.

Display a warning if on linux and the package is absent.

Signed-off-by: Abishek V Ashok <abishekvashok@gmail.com>
---
 configure.ac | 23 +++++++++++++++++++++--
 1 file changed, 21 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index b635b1c..38caec3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -7,11 +7,15 @@ AM_INIT_AUTOMAKE
 
 AC_CANONICAL_HOST
 host_osx=no
+host_linux=no
 native_windows=no
 case $host in
   *mingw*)
     native_windows=yes
     ;;
+  *linux*)
+    host_linux=yes
+    ;;
   *darwin*)
     host_osx=yes
     ;;
@@ -25,9 +29,24 @@ AC_PROG_INSTALL
 AC_PROG_MAKE_SET
 
 dnl Checks for libraries.
-dnl Replace `main' with a function in -lncurses:
+FOUND_NCURSESW=no
+AC_CHECK_LIB(ncursesew, waddnwstr, FOUND_NCURSESW=yes)
 AC_CHECK_LIB(ncurses, main)
 
+dnl wide character support for ncurses is found in seperate library ncursesw in
+dnl some linux distributions like ubuntu, warn if it is not present in that case
+if test x$FOUND_NCURSESW = xno; then
+    if test x$host_linux = xyes; then
+        AC_MSG_WARN([
+
+*** ncurses with wide character support is packaged as a seperate library (ncursesw)
+*** on some linux distributions such as ubunutu. If you face compilation errors,
+*** please install the library.
+
+])
+    fi
+fi
+
 dnl Checks for header files.
 AC_HEADER_STDC
 AC_CHECK_HEADERS(fcntl.h sys/ioctl.h unistd.h termios.h termio.h getopt.h)
@@ -40,7 +59,7 @@ dnl Checks for libraries.
 AC_CHECK_HEADERS(curses.h ncurses.h)
 
 CURSES_LIB_NAME=""
-AC_CHECK_LIB(ncurses, tgetent, CURSES_LIB="-lncurses" CURSES_LIB_NAME=ncurses)
+AC_CHECK_LIB(ncurses, tgetent, CURSES_LIB="-lncursesw" CURSES_LIB=ncursesw)
 
 if eval "test x$CURSES_LIB_NAME = x"
 then