From 0cbe94256e4f600ceb397ddf8c0e3dca60676e5b Mon Sep 17 00:00:00 2001
From: Patric Stout <truebrain@openttd.org>
Date: Sun, 14 Nov 2021 16:59:49 +0100
Subject: Change: [Emscripten] update to 2.0.34 and use Release over
 RelWithDebInfo (#9696)

It turns out that having "-g" in the compile-statement causes
Emscripten to pick -g3, which makes for very big binaries. This
is very likely not your intention when building Emscripten, as
smaller really is better.

For comparison, with RelWithDebInfo the binary is ~80MB. With
Release it is ~7.4MB.
---
 .github/workflows/preview_build.yml | 2 +-
 os/emscripten/Dockerfile            | 2 +-
 os/emscripten/README.md             | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/preview_build.yml b/.github/workflows/preview_build.yml
index 345a2152d..2a280a6fc 100644
--- a/.github/workflows/preview_build.yml
+++ b/.github/workflows/preview_build.yml
@@ -76,7 +76,7 @@ jobs:
         echo "::group::CMake"
         emcmake cmake .. \
           -DHOST_BINARY_DIR=../build-host \
-          -DCMAKE_BUILD_TYPE=RelWithDebInfo \
+          -DCMAKE_BUILD_TYPE=Release \
           # EOF
         echo "::endgroup::"
 
diff --git a/os/emscripten/Dockerfile b/os/emscripten/Dockerfile
index cbbff38c1..5d54b5411 100644
--- a/os/emscripten/Dockerfile
+++ b/os/emscripten/Dockerfile
@@ -1,4 +1,4 @@
-FROM emscripten/emsdk:2.0.31
+FROM emscripten/emsdk:2.0.34
 
 COPY emsdk-liblzma.patch /
 RUN cd /emsdk/upstream/emscripten && patch -p1 < /emsdk-liblzma.patch
diff --git a/os/emscripten/README.md b/os/emscripten/README.md
index 59f17c626..c78dc6727 100644
--- a/os/emscripten/README.md
+++ b/os/emscripten/README.md
@@ -24,7 +24,7 @@ Next, build the game with emscripten:
 
 ```
   mkdir build
-  docker run -it --rm -v $(pwd):$(pwd) -u $(id -u):$(id -g) --workdir $(pwd)/build emsdk-lzma emcmake cmake .. -DHOST_BINARY_DIR=$(pwd)/build-host -DCMAKE_BUILD_TYPE=RelWithDebInfo -DOPTION_USE_ASSERTS=OFF
+  docker run -it --rm -v $(pwd):$(pwd) -u $(id -u):$(id -g) --workdir $(pwd)/build emsdk-lzma emcmake cmake .. -DHOST_BINARY_DIR=../build-host -DCMAKE_BUILD_TYPE=Release -DOPTION_USE_ASSERTS=OFF
   docker run -it --rm -v $(pwd):$(pwd) -u $(id -u):$(id -g) --workdir $(pwd)/build emsdk-lzma emmake make -j5
 ```
 
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