samples: add simple c++ example that links to libcxx

ci.sh

@@ -23,9 +23,11 @@ trap 'rm -rf -- "$DESTDIR"' EXIT
 
 make clean install || exit 1
 export PS5_PAYLOAD_SDK=$DESTDIR
+$SCRIPTDIR/libcxx.sh || exit 1
 
 MAKE_SAMPLES=("arbitrary_syscall"
 	      "browser"
+	      "hello_cxx"
 	      "hello_sprx"
 	      "hello_stdio"
 	      "hello_world"

samples/hello_cxx/.gitignore

@@ -0,0 +1,4 @@
+*.elf
+*.o
+*~
+

samples/hello_cxx/Makefile

@@ -0,0 +1,40 @@
+#   Copyright (C) 2024 John Törnblom
+#
+# This file is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; see the file COPYING. If not see
+# <http://www.gnu.org/licenses/>.
+
+PS5_HOST ?= ps5
+PS5_PORT ?= 9021
+
+ifdef PS5_PAYLOAD_SDK
+    include $(PS5_PAYLOAD_SDK)/toolchain/prospero.mk
+else
+    $(error PS5_PAYLOAD_SDK is undefined)
+endif
+
+ELF := hello_cxx.elf
+
+CFLAGS := -Wall -Werror
+
+all: $(ELF)
+
+$(ELF): main.cpp
+	$(CXX) $(CFLAGS) -o $@ $^
+
+clean:
+	rm -f $(ELF)
+
+test: $(ELF)
+	$(PS5_DEPLOY) -h $(PS5_HOST) -p $(PS5_PORT) $^
+

samples/hello_cxx/main.cpp

@@ -0,0 +1,43 @@
+/* Copyright (C) 2024 John Törnblom
+
+This program is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 3, or (at your option) any
+later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; see the file COPYING. If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#include <algorithm>
+#include <iostream>
+#include <thread>
+#include <vector>
+
+using namespace std;
+
+void task(string prefix) {
+  vector<int> vec = {4, 2, 3, 1, 5};
+
+  sort(vec.begin(), vec.end());
+
+  cout << prefix << ": sorted vec: ";
+  for(int n : vec) {
+    cout << n << " ";
+  }
+  cout << endl;
+}
+
+
+int main() {
+  cout << "Hello, libcxx!" << endl;
+  thread t(task, __FILE__);
+  t.join();
+
+  return 0;
+}