SCons: Build thirdparty code in own env, disable warnings

Also remove unnecessary `Export('env')` in other SCsubs,
Export should only be used when exporting *new* objects.

1 files changed, 10 insertions, 6 deletions

diff --git a/modules/etc/SCsub b/modules/etc/SCsub
index 31d8f00ef3..d2c77d6e3c 100644
--- a/modules/etc/SCsub
+++ b/modules/etc/SCsub
@@ -27,16 +27,20 @@ thirdparty_sources = [
 ]
 thirdparty_sources = [thirdparty_dir + file for file in thirdparty_sources]
 
-env_etc.add_source_files(env.modules_sources, thirdparty_sources)
 env_etc.Append(CPPPATH=[thirdparty_dir])
 
-# Godot source files
-env_etc.add_source_files(env.modules_sources, "*.cpp")
-
 # upstream uses c++11
-if (not env_etc.msvc):
+if not env.msvc:
 	env_etc.Append(CCFLAGS="-std=c++11")
-# -ffast-math seems to be incompatible with ec2comp on recent versions of
+
+# -ffast-math seems to be incompatible with etc2comp on recent versions of
 # GCC and Clang
 if '-ffast-math' in env_etc['CCFLAGS']:
 	env_etc['CCFLAGS'].remove('-ffast-math')
+
+env_thirdparty = env_etc.Clone()
+env_thirdparty.disable_warnings()
+env_thirdparty.add_source_files(env.modules_sources, thirdparty_sources)
+
+# Godot source files
+env_etc.add_source_files(env.modules_sources, "*.cpp")