diff options
| author | Rémi Verschelde <rverschelde@gmail.com> | 2022-07-21 15:15:54 +0200 |
|---|---|---|
| committer | Rémi Verschelde <rverschelde@gmail.com> | 2022-09-08 10:00:02 +0200 |
| commit | c2c659db326591519d451d368c4e33c78bb9c1fa (patch) | |
| tree | 3c93bbc143612aa2d5487b9c0918b74629bdd714 /platform/web | |
| parent | 69233093d7e6479b5130bf2c39cbf464a6809c1b (diff) | |
SCons: Refactor LTO options with `lto=<none|thin|full>`
Adds support for LTO on macOS and Android. We don't have much experience
with LTO on these platforms so for now we keep it disabled by default
even when `production=yes` is set.
Similarly for iOS where we ship object files for the user to link in
Xcode so LTO makes builds extremely slow to link.
`production=yes` defaults to full LTO.
ThinLTO is much faster for LLVM-based compilers but seems to produce
bigger binaries (at least for the Web platform).
Diffstat (limited to 'platform/web')
| -rw-r--r-- | platform/web/detect.py | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/platform/web/detect.py b/platform/web/detect.py index b1c1dd48a9..e055af8400 100644 --- a/platform/web/detect.py +++ b/platform/web/detect.py @@ -31,7 +31,6 @@ def get_opts(): return [ ("initial_memory", "Initial WASM memory (in MiB)", 32), BoolVariable("use_assertions", "Use Emscripten runtime assertions", False), - BoolVariable("use_thinlto", "Use ThinLTO", False), BoolVariable("use_ubsan", "Use Emscripten undefined behavior sanitizer (UBSAN)", False), BoolVariable("use_asan", "Use Emscripten address sanitizer (ASAN)", False), BoolVariable("use_lsan", "Use Emscripten leak sanitizer (LSAN)", False), @@ -110,12 +109,13 @@ def configure(env): env["ENV"] = os.environ # LTO - if env["use_thinlto"]: - env.Append(CCFLAGS=["-flto=thin"]) - env.Append(LINKFLAGS=["-flto=thin"]) - elif env["use_lto"]: - env.Append(CCFLAGS=["-flto=full"]) - env.Append(LINKFLAGS=["-flto=full"]) + if env["lto"] != "none": + if env["lto"] == "thin": + env.Append(CCFLAGS=["-flto=thin"]) + env.Append(LINKFLAGS=["-flto=thin"]) + else: + env.Append(CCFLAGS=["-flto"]) + env.Append(LINKFLAGS=["-flto"]) # Sanitizers if env["use_ubsan"]: |