meson.build: drop the separate cpp flags

All we care about for C++ is that we build.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

meson.build

@@ -42,10 +42,14 @@ libinput_so_version = '@0@.@1@.@2@'.format((libinput_lt_c - libinput_lt_a),
 
 # Compiler setup
 cc = meson.get_compiler('c')
-cppflags = ['-Wno-unused-parameter', '-fvisibility=hidden']
-cflags = cppflags + ['-Wmissing-prototypes', '-Wstrict-prototypes']
+cflags = [
+	'-Wno-unused-parameter',
+	'-Wmissing-prototypes',
+	'-Wstrict-prototypes'
+
+	'-fvisibility=hidden',
+]
 add_project_arguments(cflags, language : 'c')
-add_project_arguments(cppflags, language : 'cpp')
 
 # config.h
 config_h = configuration_data()

test/build-cxx.cc

@@ -5,7 +5,7 @@
 using namespace std;
 
 int
-main(int argc, char **argv)
+main(void)
 {
 	return 0;
 }