link libstdc++ dynamically (#10)

metamod/include/common/stdc++compat.cpp

@@ -0,0 +1,33 @@
+#include <stdio.h>
+
+#if !defined(_WIN32)
+void NORETURN Sys_Error(const char *error, ...);
+
+// This file adds the necessary compatibility tricks to avoid symbols with
+// version GLIBCXX_3.4.16 and bigger, keeping binary compatibility with libstdc++ 4.6.1.
+namespace std
+{
+	// We shouldn't be throwing exceptions at all, but it sadly turns out we call STL (inline) functions that do.
+	void __throw_out_of_range_fmt(const char *fmt, ...)
+	{
+		va_list ap;
+		char buf[1024]; // That should be big enough.
+
+		va_start(ap, fmt);
+		vsnprintf(buf, sizeof(buf), fmt, ap);
+		buf[sizeof(buf) - 1] = '\0';
+		va_end(ap);
+
+		Sys_Error(buf);
+	}
+}; // namespace std
+
+// Technically, this symbol is not in GLIBCXX_3.4.20, but in CXXABI_1.3.8,
+// but that's equivalent, version-wise. Those calls are added by the compiler
+// itself on `new Class[n]` calls.
+extern "C"
+void __cxa_throw_bad_array_new_length()
+{
+	Sys_Error("Bad array new length.");
+}
+#endif // !defined(_WIN32)

metamod/src/public_amalgamation.cpp

@@ -1,5 +1,6 @@
 #include "precompiled.h"
 
+#include "stdc++compat.cpp"
 #include "sys_shared.cpp"
 #include "interface.cpp"
 #include "crc32c.cpp"

metamod/src/utils.cpp

@@ -305,3 +305,19 @@ bool mem_compare(const char* addr, const char* pattern, size_t len)
 	}
 	return true;
 }
+
+void NORETURN Sys_Error(const char *error, ...)
+{
+	va_list argptr;
+	static char text[1024];
+
+	va_start(argptr, error);
+	vsnprintf(text, sizeof(text), error, argptr);
+	va_end(argptr);
+
+	META_CONS("FATAL ERROR (shutting down): %s\n", text);
+
+	int *null = 0;
+	*null = 0;
+	exit(-1);
+}

metamod/src/utils.h

@@ -80,5 +80,6 @@ void __declspec(noreturn) do_exit(int exitval);
 bool is_file_exists_in_gamedir(const char *path);
 char *full_gamedir_path(const char *path, char *fullpath);
 bool mem_compare(const char* addr, const char* pattern, size_t len);
+void NORETURN Sys_Error(const char *error, ...);
 
 extern const char* g_platform_postfixes[4];

shared_icc.gradle

@@ -18,16 +18,17 @@ rootProject.ext.createIccConfig = { boolean release, BinaryKind binKind ->
 				extraDefines: [
 					'linux': null,
 					'__linux__': null,
-					'NDEBUG': null
+					'NDEBUG': null,
+					'_GLIBCXX_USE_CXX11_ABI': 0
 				]
 			),
 
 			linkerOptions: new GccToolchainConfig.LinkerOptions(
 				interProceduralOptimizations: true,
 				stripSymbolTable: true,
-				staticLibGcc: true,
+				staticLibGcc: false,
 				staticIntel: true,
-				staticLibStdCpp: true,
+				staticLibStdCpp: false,
 			),
 
 			librarianOptions: new GccToolchainConfig.LibrarianOptions(
@@ -47,16 +48,17 @@ rootProject.ext.createIccConfig = { boolean release, BinaryKind binKind ->
 				extraDefines: [
 					'linux': null,
 					'__linux__': null,
-					'NDEBUG': null
+					'NDEBUG': null,
+					'_GLIBCXX_USE_CXX11_ABI': 0
 				]
 			),
 
 			linkerOptions: new GccToolchainConfig.LinkerOptions(
 				interProceduralOptimizations: false,
 				stripSymbolTable: false,
-				staticLibGcc: true,
+				staticLibGcc: false,
 				staticIntel: true,
-				staticLibStdCpp: true,
+				staticLibStdCpp: false,
 			),
 
 			librarianOptions: new GccToolchainConfig.LibrarianOptions(