- added checking for SDL2 libraries.

Makefile.in

@@ -331,6 +331,7 @@ PACKAGE_VERSION = @PACKAGE_VERSION@
 PATH_SEPARATOR = @PATH_SEPARATOR@
 PKG_CONFIG = @PKG_CONFIG@
 POSUB = @POSUB@
+SDL2_CONFIG = @SDL2_CONFIG@
 SED = @SED@
 SET_MAKE = @SET_MAKE@
 SHELL = @SHELL@

configure

@@ -648,6 +648,7 @@ LTLIBOBJS
 LIBOBJS
 ENABLE_COMPLETION_FALSE
 ENABLE_COMPLETION_TRUE
+SDL2_CONFIG
 WISH
 COMPLETION_DIR
 PKG_CONFIG
@@ -8084,6 +8085,64 @@ if test "$WISH" = "no" ; then
    exit 1;
 fi
 
+for ac_prog in sdl2-config
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_SDL2_CONFIG+y}
+then :
+  printf %s "(cached) " >&6
+else case e in #(
+  e) case $SDL2_CONFIG in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_SDL2_CONFIG="$SDL2_CONFIG" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_path_SDL2_CONFIG="$as_dir$ac_word$ac_exec_ext"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  ;;
+esac ;;
+esac
+fi
+SDL2_CONFIG=$ac_cv_path_SDL2_CONFIG
+if test -n "$SDL2_CONFIG"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $SDL2_CONFIG" >&5
+printf "%s\n" "$SDL2_CONFIG" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+  test -n "$SDL2_CONFIG" && break
+done
+test -n "$SDL2_CONFIG" || SDL2_CONFIG="no"
+
+
+if test "$SDL2_CONFIG" = "no" ; then
+   as_fn_error $? "Can not find libsdl2 development library." "$LINENO" 5
+   exit 1;
+fi
+
  if test "$COMPLETION_DIR" != ""; then
   ENABLE_COMPLETION_TRUE=
   ENABLE_COMPLETION_FALSE='#'
@@ -8316,6 +8375,61 @@ esac
 fi
 
 
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for TTF_Init in -lSDL2_ttf" >&5
+printf %s "checking for TTF_Init in -lSDL2_ttf... " >&6; }
+if test ${ac_cv_lib_SDL2_ttf_TTF_Init+y}
+then :
+  printf %s "(cached) " >&6
+else case e in #(
+  e) ac_check_lib_save_LIBS=$LIBS
+LIBS="-lSDL2_ttf  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.
+   The 'extern "C"' is for builds by C++ compilers;
+   although this is not generally supported in C code supporting it here
+   has little cost and some practical benefit (sr 110532).  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char TTF_Init (void);
+int
+main (void)
+{
+return TTF_Init ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_SDL2_ttf_TTF_Init=yes
+else case e in #(
+  e) ac_cv_lib_SDL2_ttf_TTF_Init=no ;;
+esac
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS ;;
+esac
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_SDL2_ttf_TTF_Init" >&5
+printf "%s\n" "$ac_cv_lib_SDL2_ttf_TTF_Init" >&6; }
+if test "x$ac_cv_lib_SDL2_ttf_TTF_Init" = xyes
+then :
+  printf "%s\n" "#define HAVE_LIBSDL2_TTF 1" >>confdefs.h
+
+  LIBS="-lSDL2_ttf $LIBS"
+
+else case e in #(
+  e) as_fn_error $? "Can not find libsdl ttf." "$LINENO" 5 ;;
+esac
+fi
+
+
 
 ac_header= ac_cache=
 for ac_item in $ac_header_c_list

configure.ac

@@ -157,6 +157,13 @@ if test "$WISH" = "no" ; then
    exit 1;
 fi
 
+AC_PATH_PROGS([SDL2_CONFIG],[sdl2-config],[no])
+
+if test "$SDL2_CONFIG" = "no" ; then
+   AC_MSG_ERROR([Can not find libsdl2 development library.])
+   exit 1;
+fi
+
 AM_CONDITIONAL([ENABLE_COMPLETION],[test "$COMPLETION_DIR" != ""])
 
 AC_PROG_MKDIR_P
@@ -171,6 +178,8 @@ AC_CHECK_LIB([sqlite3], [sqlite3_libversion], [], AC_MSG_ERROR([Can not find lib
 
 AC_CHECK_LIB([turbojpeg], [tjInitDecompress], [], AC_MSG_ERROR([Can not find libturbojpeg0.]))
 
+AC_CHECK_LIB([SDL2_ttf], [TTF_Init], [], AC_MSG_ERROR([Can not find libsdl ttf.]))
+
 dnl check headers
 
 AC_CHECK_HEADER([turbojpeg.h], [], [Can not find libturbojpeg0 headers file.], [])

debian/control

@@ -18,6 +18,7 @@ Build-Depends:
  libgettextpo0,
  libncurses-dev,
  libsdl2-dev,
+ libsdl2-ttf-dev,
  libsqlite3-dev,
  libssl-dev,
  libturbojpeg0-dev,
@@ -45,6 +46,7 @@ Depends:
  libgettextpo0,
  libncurses-dev,
  libsdl2-dev,
+ libsdl2-ttf-dev,
  libsqlite3-dev,
  libssl-dev,
  libturbojpeg0-dev,