Support real platforms with static binaries

.gitmodules

@@ -1,3 +1,3 @@
 [submodule "subprojects/libopenmpt"]
-	path = subprojects/libopenmpt
+	path = subprojects/openmpt
 	url = https://gitea.com/Apotris/libopenmpt.git

countchan.cpp

@@ -1,5 +1,6 @@
 #include <libopenmpt.hpp>
 #include <libopenmpt_ext.hpp>
+#include <memory>
 #include <vector>
 #include <fstream>
 

meson.build

@@ -1,4 +1,4 @@
-project('countchan', 'cpp', default_options : ['cpp_std=c++17', 'buildtype=debugoptimized', 'b_lto=true', 'warning_level=1'])
+project('countchan', 'cpp', default_options : ['cpp_std=c++17', 'buildtype=minsize', 'default_library=static', 'b_lto=true', 'warning_level=1'])
 
 add_global_arguments('-fexceptions', language : ['cpp'])
 add_global_arguments('-frtti', language : ['cpp'])
@@ -7,9 +7,27 @@ mpt = dependency('openmpt', static : true, fallback : ['openmpt', 'openmpt_dep']
 
 sources = files('countchan.cpp')
 
+if meson.get_compiler('cpp').get_id() != 'clang'
+    link_args = [
+        '-static-libgcc',
+        '-static-libstdc++',
+    ]
+else
+    link_args = []
+endif
+
+if host_machine.system() == 'windows'
+    link_args += '-Wl,-Bstatic,--whole-archive'
+    link_args += '-lwinpthread'
+    link_args += '-Wl,--no-whole-archive'
+elif host_machine.system() == 'darwin'
+    link_args += '-mmacosx-version-min=10.15'
+endif
+
 executable('countchan',
-           dependencies : [mpt],
+           dependencies : [dependency('threads'), mpt],
            win_subsystem : 'console',
+           link_args : link_args,
            sources : sources
 )