meson: wildmidi detection fixes

Need at least 0.4.2 apparently.

ext/wildmidi/meson.build:11:2: ERROR:  String '' cannot be converted to int

diff --git a/ext/wildmidi/meson.build b/ext/wildmidi/meson.build
index 902e066..dd0a8f6 100644 (file)
--- a/ext/wildmidi/meson.build
+++ b/ext/wildmidi/meson.build
@@ -8,10 +8,14 @@ wildmidi_dep = dependency('WildMIDI', version: '>= 0.4.2', required: false)
 if not wildmidi_dep.found() and cc.has_header ('wildmidi_lib.h')
   wildmidi_ver_maj = cc.get_define('LIBWILDMIDI_VER_MAJOR', prefix: '#include <wildmidi_lib.h>')
   wildmidi_ver_min = cc.get_define('LIBWILDMIDI_VER_MINOR', prefix: '#include <wildmidi_lib.h>')
-  wildmidi_ver_maj = ''.join(wildmidi_ver_maj.split('L')).to_int() # '0L' -> 0
-  wildmidi_ver_min = ''.join(wildmidi_ver_min.split('L')).to_int() # '4L' -> 4
-  if wildmidi_ver_maj == 0 and wildmidi_ver_min >= 4
-    wildmidi_dep = cc.find_library('WildMidi', required: false)
+  if wildmidi_ver_maj != '' and wildmidi_ver_min != ''
+    wildmidi_ver_maj = ''.join(wildmidi_ver_maj.split('L')).to_int() # '0L' -> 0
+    wildmidi_ver_min = ''.join(wildmidi_ver_min.split('L')).to_int() # '4L' -> 4
+    if wildmidi_ver_maj == 0 and wildmidi_ver_min >= 4
+      wildmidi_dep = cc.find_library('WildMidi', required: false)
+    else
+      message('WildMidi version too old, need >= 0.4.x')
+    endif
   else
     message('WildMidi version too old, need >= 0.4.x')
   endif