From 95b5aef265c0eccccbd75f67967736d0f5aa1223 Mon Sep 17 00:00:00 2001
From: "H. Vetinari" <h.vetinari@gmx.com>
Date: Fri, 13 Sep 2024 14:43:28 +0200
Subject: [PATCH 1/7] add emscripten-activation

---
 recipes/emscripten-activation/activate.sh     | 62 +++++++++++++++++++
 .../conda_build_config.yaml                   | 12 ++++
 recipes/emscripten-activation/deactivate.sh   | 12 ++++
 .../install_emscripten.sh                     | 13 ++++
 .../install_emscripten_impl.sh                | 11 ++++
 recipes/emscripten-activation/meta.yaml       | 62 +++++++++++++++++++
 recipes/emscripten-activation/testfile.c      | 15 +++++
 7 files changed, 187 insertions(+)
 create mode 100644 recipes/emscripten-activation/activate.sh
 create mode 100644 recipes/emscripten-activation/conda_build_config.yaml
 create mode 100644 recipes/emscripten-activation/deactivate.sh
 create mode 100644 recipes/emscripten-activation/install_emscripten.sh
 create mode 100644 recipes/emscripten-activation/install_emscripten_impl.sh
 create mode 100644 recipes/emscripten-activation/meta.yaml
 create mode 100644 recipes/emscripten-activation/testfile.c

diff --git a/recipes/emscripten-activation/activate.sh b/recipes/emscripten-activation/activate.sh
new file mode 100644
index 0000000000000..3910d7150a8bc
--- /dev/null
+++ b/recipes/emscripten-activation/activate.sh
@@ -0,0 +1,62 @@
+if [ -z ${CONDA_FORGE_EMSCRIPTEN_ACTIVATED+x} ]; then
+
+    export CONDA_FORGE_EMSCRIPTEN_ACTIVATED=1
+
+    export EMSDK_PYTHON=${CONDA_PREFIX}/bin/python3
+    export PYTHON=${CONDA_PREFIX}/bin/python3
+
+    CONDA_EMSDK_DIR=$CONDA_PREFIX/opt/emsdk
+ 
+    export EMSCRIPTEN_VERSION=$PKG_VERSION
+    export EMSCRIPTEN_FORGE_EMSDK_DIR=$CONDA_EMSDK_DIR
+
+    # clear all prexisting cmake args / CC / CXX / AR / RANLIB
+    export CC="emcc"
+    export CXX="em++"
+    export AR="emar"
+    export RANLIB="emranlib"
+    
+    export CMAKE_ARGS=""
+
+    # set the emscripten toolchain
+    export CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_TOOLCHAIN_FILE=$CONDA_EMSDK_DIR/upstream/emscripten/cmake/Modules/Platform/Emscripten.cmake"
+
+    # conda prefix path
+    export CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_PREFIX_PATH=$PREFIX"
+
+    # install prefix
+    export CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=$PREFIX"
+
+    # find root path mode package
+    export CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_FIND_ROOT_PATH_MODE_PACKAGE=ON"
+
+    # fpic
+    export CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_POSITION_INDEPENDENT_CODE:BOOL=true"
+
+    cmake () {
+        emcmake cmake "$@"
+    }
+
+    # useful variables
+    export PY_SIDE_LD_FLAGV
+
+    # basics
+    export EM_FORGE_OPTFLAGS="-O2"
+    export EM_FORGE_DBGFLAGS="-g0"
+
+    # basics ld
+    export EM_FORGE_LDFLAGS_BASE="-s MODULARIZE=1 -s LINKABLE=1 -s EXPORT_ALL=1 -s WASM=1 -std=c++14 -s LZ4=1"
+    export EM_FORGE_LDFLAGS_BASE="${EM_FORGE_OPTFLAGS} ${EM_FORGE_DBGFLAGS} ${EM_FORGE_LDFLAGS_BASE}"
+
+    # basics cflags
+    export EM_FORGE_CFLAGS_BASE="-fPIC"
+    export EM_FORGE_CFLAGS_BASE="${EM_FORGE_OPTFLAGS} ${EM_FORGE_DBGFLAGS} ${EM_FORGE_CFLAGS_BASE}"
+
+    # side module
+    export EM_FORGE_SIDE_MODULE_LDFLAGS="${LDFLAGS_BASE} -s SIDE_MODULE=1"
+    export EM_FORGE_SIDE_MODULE_CFLAGS="${EM_FORGE_CFLAGS_BASE} -I${PREFIX}/include"
+
+    # wasm bigint
+    export LDFLAGS="$LDFLAGS -sWASM_BIGINT"
+
+fi
diff --git a/recipes/emscripten-activation/conda_build_config.yaml b/recipes/emscripten-activation/conda_build_config.yaml
new file mode 100644
index 0000000000000..9c8026f99249d
--- /dev/null
+++ b/recipes/emscripten-activation/conda_build_config.yaml
@@ -0,0 +1,12 @@
+CBUILD:
+  - x86_64-conda-linux-gnu
+
+CHOST:
+  - wasm32-unknown-emscripten
+
+cross_target_platform:
+  - emscripten-wasm32
+
+# needs clang 19
+channel_sources:
+  - conda-forge/label/llvm_rc,conda-forge
diff --git a/recipes/emscripten-activation/deactivate.sh b/recipes/emscripten-activation/deactivate.sh
new file mode 100644
index 0000000000000..7e5e73c164476
--- /dev/null
+++ b/recipes/emscripten-activation/deactivate.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+
+unset cmake
+
+unset CONDA_FORGE_EMSCRIPTEN_ACTIVATED
+unset PY_SIDE_LD_FLAGV
+unset EM_FORGE_OPTFLAGS
+unset EM_FORGE_DBGFLAGS
+unset EM_FORGE_LDFLAGS_BASE
+unset EM_FORGE_CFLAGS_BASE
+unset EM_FORGE_SIDE_MODULE_LDFLAGS
+unset EM_FORGE_SIDE_MODULE_CFLAGS
diff --git a/recipes/emscripten-activation/install_emscripten.sh b/recipes/emscripten-activation/install_emscripten.sh
new file mode 100644
index 0000000000000..1212d73397b70
--- /dev/null
+++ b/recipes/emscripten-activation/install_emscripten.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+set -ex
+
+# Copy the [de]activate scripts to $PREFIX/etc/conda/[de]activate.d.
+# This will allow them to be run on environment activation.
+for CHANGE in "activate" "deactivate"
+do
+    mkdir -p "${PREFIX}/etc/conda/${CHANGE}.d"
+    envsubst '$PKG_VERSION' < "${RECIPE_DIR}/${CHANGE}.sh" > "${PREFIX}/etc/conda/${CHANGE}.d/${PKG_NAME}_${CHANGE}.sh"
+done
+
+mkdir -p ${PREFIX}/bin
+cp "${PREFIX}/etc/conda/${CHANGE}.d/${PKG_NAME}_${CHANGE}.sh" ${PREFIX}/bin/activate_emscripten.sh
diff --git a/recipes/emscripten-activation/install_emscripten_impl.sh b/recipes/emscripten-activation/install_emscripten_impl.sh
new file mode 100644
index 0000000000000..82d178e27d1bd
--- /dev/null
+++ b/recipes/emscripten-activation/install_emscripten_impl.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+set -ex
+
+pushd "${PREFIX}"/bin
+  for BINARY in "em++" "em-config" "emar" "embuilder" "emcc" "emcmake" "emconfigure" "emmake" "emranlib" "emrun" "emscons" "emsize" "emstrip" "emsymbolizer"; do
+    ln -s $BINARY ${CHOST}-$BINARY
+    if [[ "${CBUILD}" != ${CHOST} ]]; then
+      ln -s $BINARY ${CBUILD}-$BINARY
+    fi
+  done
+popd
diff --git a/recipes/emscripten-activation/meta.yaml b/recipes/emscripten-activation/meta.yaml
new file mode 100644
index 0000000000000..c0b0a8557dda3
--- /dev/null
+++ b/recipes/emscripten-activation/meta.yaml
@@ -0,0 +1,62 @@
+{% set version = "3.1.58" %}
+# emscripten expects specific clang version, see
+# https://github.com/emscripten-core/emscripten/blob/3.1.58/tools/shared.py#L62
+{% set clang_version = 19 %}
+
+package:
+  name: emscripten-activation
+  version: {{ version }}
+
+build:
+  number: 0
+  skip: true  # [win]
+
+outputs:
+  - name: emscripten_impl_{{ cross_target_platform }}
+    script: install_emscripten_impl.sh   # [unix]
+    requirements:
+      - emscripten ={{ version }}
+      - clang {{ clang_version }}
+      - clangxx {{ clang_version }}
+    test:
+      commands:
+        - {{ CBUILD }}-emcc --version   # [unix]
+        - {{ CHOST }}-emcc --version    # [unix]
+
+  - name: emscripten_{{ cross_target_platform }}
+    script: install_emscripten.sh   # [unix]
+    run_exports:
+      strong:
+        - {{ pin_subpackage("emscripten-abi", lower_bound="x.x.x", upper_bound="x.x.x") }}
+    requirements:
+      run:
+        - {{ pin_subpackage("emscripten_impl_" ~ cross_target_platform, exact=True) }}
+    test:
+      files:
+        - testfile.c
+      commands:
+        - emcc ./testfile.c
+        - node a.out.js
+
+  - name: emscripten-abi
+    build:
+      noarch: generic
+    test:
+      commands:
+        - echo "emscripten abi is built."
+
+about:
+  home: https://emscripten.org
+  license: MIT
+  license_file: LICENSE.txt
+  summary: An LLVM-to-WebAssembly Compiler
+  description: Emscripten compiles C and C++ to WebAssembly using LLVM and Binaryen. Emscripten output can run on the Web, in Node.js, and in wasm runtimes.
+  dev_url: https://github.com/emscripten-core/emscripten
+  doc_url: https://emscripten.org/
+
+extra:
+  recipe-maintainers:
+    - DerThorsten
+    - wolfv
+    - h-vetinari
+    - conda-forge/emscripten
diff --git a/recipes/emscripten-activation/testfile.c b/recipes/emscripten-activation/testfile.c
new file mode 100644
index 0000000000000..5f9c40e408b41
--- /dev/null
+++ b/recipes/emscripten-activation/testfile.c
@@ -0,0 +1,15 @@
+/*
+ * Copyright 2011 The Emscripten Authors.  All rights reserved.
+ * Emscripten is available under two separate licenses, the MIT license and the
+ * University of Illinois/NCSA Open Source License.  Both these licenses can be
+ * found in the LICENSE file.
+ */
+
+#include <stdio.h>
+
+int main() {
+  printf("hello, world!\n");
+  return 0;
+}
+
+

From 68cc1995166cbf0cc9a9445240acba4bc3e2243a Mon Sep 17 00:00:00 2001
From: "H. Vetinari" <h.vetinari@gmx.com>
Date: Fri, 13 Sep 2024 14:44:51 +0200
Subject: [PATCH 2/7] use BSD-3 license for compiler activation

---
 recipes/emscripten-activation/LICENSE   | 28 +++++++++++++++++++++++++
 recipes/emscripten-activation/meta.yaml |  4 ++--
 2 files changed, 30 insertions(+), 2 deletions(-)
 create mode 100644 recipes/emscripten-activation/LICENSE

diff --git a/recipes/emscripten-activation/LICENSE b/recipes/emscripten-activation/LICENSE
new file mode 100644
index 0000000000000..9aab6814c6ea8
--- /dev/null
+++ b/recipes/emscripten-activation/LICENSE
@@ -0,0 +1,28 @@
+BSD 3-Clause License
+
+Copyright (c) 2012, Anaconda, Inc.
+Copyright (c) 2015-2019, conda-forge
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of the copyright holder nor the names of its
+      contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/recipes/emscripten-activation/meta.yaml b/recipes/emscripten-activation/meta.yaml
index c0b0a8557dda3..f0b03bfd0c993 100644
--- a/recipes/emscripten-activation/meta.yaml
+++ b/recipes/emscripten-activation/meta.yaml
@@ -47,8 +47,8 @@ outputs:
 
 about:
   home: https://emscripten.org
-  license: MIT
-  license_file: LICENSE.txt
+  license: BSD-3-Clause
+  license_file: LICENSE
   summary: An LLVM-to-WebAssembly Compiler
   description: Emscripten compiles C and C++ to WebAssembly using LLVM and Binaryen. Emscripten output can run on the Web, in Node.js, and in wasm runtimes.
   dev_url: https://github.com/emscripten-core/emscripten

From aec227a1859390b6a759b809c3991eb268589047 Mon Sep 17 00:00:00 2001
From: "H. Vetinari" <h.vetinari@gmx.com>
Date: Fri, 13 Sep 2024 14:55:55 +0200
Subject: [PATCH 3/7] remove left-over rattler-build syntax

---
 recipes/emscripten-activation/meta.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/recipes/emscripten-activation/meta.yaml b/recipes/emscripten-activation/meta.yaml
index f0b03bfd0c993..75aba57bb4e25 100644
--- a/recipes/emscripten-activation/meta.yaml
+++ b/recipes/emscripten-activation/meta.yaml
@@ -27,7 +27,7 @@ outputs:
     script: install_emscripten.sh   # [unix]
     run_exports:
       strong:
-        - {{ pin_subpackage("emscripten-abi", lower_bound="x.x.x", upper_bound="x.x.x") }}
+        - {{ pin_subpackage("emscripten-abi", max_pin="x.x.x") }}
     requirements:
       run:
         - {{ pin_subpackage("emscripten_impl_" ~ cross_target_platform, exact=True) }}

From 045fc22671404acd39d06d6d8907f219e64850ec Mon Sep 17 00:00:00 2001
From: "H. Vetinari" <h.vetinari@gmx.com>
Date: Fri, 13 Sep 2024 15:03:24 +0200
Subject: [PATCH 4/7] add gettext for bin/envsubst

---
 recipes/emscripten-activation/meta.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/recipes/emscripten-activation/meta.yaml b/recipes/emscripten-activation/meta.yaml
index 75aba57bb4e25..dad1f9ae6f49a 100644
--- a/recipes/emscripten-activation/meta.yaml
+++ b/recipes/emscripten-activation/meta.yaml
@@ -29,6 +29,8 @@ outputs:
       strong:
         - {{ pin_subpackage("emscripten-abi", max_pin="x.x.x") }}
     requirements:
+      build:
+        - gettext
       run:
         - {{ pin_subpackage("emscripten_impl_" ~ cross_target_platform, exact=True) }}
     test:

From fb7dad88c7b4920c7dd8c3831064b44439b2902b Mon Sep 17 00:00:00 2001
From: "H. Vetinari" <h.vetinari@gmx.com>
Date: Sun, 15 Sep 2024 10:42:33 +0200
Subject: [PATCH 5/7] remove some redundant variables from activation

---
 recipes/emscripten-activation/activate.sh   | 10 +---------
 recipes/emscripten-activation/deactivate.sh |  2 --
 2 files changed, 1 insertion(+), 11 deletions(-)

diff --git a/recipes/emscripten-activation/activate.sh b/recipes/emscripten-activation/activate.sh
index 3910d7150a8bc..0fd95717669c6 100644
--- a/recipes/emscripten-activation/activate.sh
+++ b/recipes/emscripten-activation/activate.sh
@@ -3,12 +3,8 @@ if [ -z ${CONDA_FORGE_EMSCRIPTEN_ACTIVATED+x} ]; then
     export CONDA_FORGE_EMSCRIPTEN_ACTIVATED=1
 
     export EMSDK_PYTHON=${CONDA_PREFIX}/bin/python3
-    export PYTHON=${CONDA_PREFIX}/bin/python3
 
-    CONDA_EMSDK_DIR=$CONDA_PREFIX/opt/emsdk
- 
-    export EMSCRIPTEN_VERSION=$PKG_VERSION
-    export EMSCRIPTEN_FORGE_EMSDK_DIR=$CONDA_EMSDK_DIR
+    export CONDA_EMSDK_DIR=${CONDA_PREFIX}/opt/emsdk
 
     # clear all prexisting cmake args / CC / CXX / AR / RANLIB
     export CC="emcc"
@@ -33,10 +29,6 @@ if [ -z ${CONDA_FORGE_EMSCRIPTEN_ACTIVATED+x} ]; then
     # fpic
     export CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_POSITION_INDEPENDENT_CODE:BOOL=true"
 
-    cmake () {
-        emcmake cmake "$@"
-    }
-
     # useful variables
     export PY_SIDE_LD_FLAGV
 
diff --git a/recipes/emscripten-activation/deactivate.sh b/recipes/emscripten-activation/deactivate.sh
index 7e5e73c164476..dab0c5434927d 100644
--- a/recipes/emscripten-activation/deactivate.sh
+++ b/recipes/emscripten-activation/deactivate.sh
@@ -1,7 +1,5 @@
 #!/bin/bash
 
-unset cmake
-
 unset CONDA_FORGE_EMSCRIPTEN_ACTIVATED
 unset PY_SIDE_LD_FLAGV
 unset EM_FORGE_OPTFLAGS

From ceb338f58840df7e7d6869ab22733a9f169d791a Mon Sep 17 00:00:00 2001
From: "H. Vetinari" <h.vetinari@gmx.com>
Date: Sun, 15 Sep 2024 10:48:42 +0200
Subject: [PATCH 6/7] remove `EM_FORGE_` prefix

---
 recipes/emscripten-activation/activate.sh   | 16 ++++++++--------
 recipes/emscripten-activation/deactivate.sh | 12 ++++++------
 2 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/recipes/emscripten-activation/activate.sh b/recipes/emscripten-activation/activate.sh
index 0fd95717669c6..ca187f7beb6ed 100644
--- a/recipes/emscripten-activation/activate.sh
+++ b/recipes/emscripten-activation/activate.sh
@@ -33,20 +33,20 @@ if [ -z ${CONDA_FORGE_EMSCRIPTEN_ACTIVATED+x} ]; then
     export PY_SIDE_LD_FLAGV
 
     # basics
-    export EM_FORGE_OPTFLAGS="-O2"
-    export EM_FORGE_DBGFLAGS="-g0"
+    export OPTFLAGS_USED="-O2"
+    export DBGFLAGS_USED="-g0"
 
     # basics ld
-    export EM_FORGE_LDFLAGS_BASE="-s MODULARIZE=1 -s LINKABLE=1 -s EXPORT_ALL=1 -s WASM=1 -std=c++14 -s LZ4=1"
-    export EM_FORGE_LDFLAGS_BASE="${EM_FORGE_OPTFLAGS} ${EM_FORGE_DBGFLAGS} ${EM_FORGE_LDFLAGS_BASE}"
+    export LDFLAGS_BASE="-s MODULARIZE=1 -s LINKABLE=1 -s EXPORT_ALL=1 -s WASM=1 -std=c++14 -s LZ4=1"
+    export LDFLAGS_BASE="${OPTFLAGS_USED} ${DBGFLAGS_USED} ${LDFLAGS_BASE}"
 
     # basics cflags
-    export EM_FORGE_CFLAGS_BASE="-fPIC"
-    export EM_FORGE_CFLAGS_BASE="${EM_FORGE_OPTFLAGS} ${EM_FORGE_DBGFLAGS} ${EM_FORGE_CFLAGS_BASE}"
+    export CFLAGS_BASE="-fPIC"
+    export CFLAGS_BASE="${OPTFLAGS_USED} ${DBGFLAGS_USED} ${CFLAGS_BASE}"
 
     # side module
-    export EM_FORGE_SIDE_MODULE_LDFLAGS="${LDFLAGS_BASE} -s SIDE_MODULE=1"
-    export EM_FORGE_SIDE_MODULE_CFLAGS="${EM_FORGE_CFLAGS_BASE} -I${PREFIX}/include"
+    export SIDE_MODULE_LDFLAGS="${LDFLAGS_BASE} -s SIDE_MODULE=1"
+    export SIDE_MODULE_CFLAGS="${CFLAGS_BASE} -I${PREFIX}/include"
 
     # wasm bigint
     export LDFLAGS="$LDFLAGS -sWASM_BIGINT"
diff --git a/recipes/emscripten-activation/deactivate.sh b/recipes/emscripten-activation/deactivate.sh
index dab0c5434927d..300da889b17b6 100644
--- a/recipes/emscripten-activation/deactivate.sh
+++ b/recipes/emscripten-activation/deactivate.sh
@@ -2,9 +2,9 @@
 
 unset CONDA_FORGE_EMSCRIPTEN_ACTIVATED
 unset PY_SIDE_LD_FLAGV
-unset EM_FORGE_OPTFLAGS
-unset EM_FORGE_DBGFLAGS
-unset EM_FORGE_LDFLAGS_BASE
-unset EM_FORGE_CFLAGS_BASE
-unset EM_FORGE_SIDE_MODULE_LDFLAGS
-unset EM_FORGE_SIDE_MODULE_CFLAGS
+unset OPTFLAGS_USED
+unset DBGFLAGS_USED
+unset LDFLAGS_BASE
+unset CFLAGS_BASE
+unset SIDE_MODULE_LDFLAGS
+unset SIDE_MODULE_CFLAGS

From eb92c0d73753c1bd9e6a10fadd2f797329d7702f Mon Sep 17 00:00:00 2001
From: "H. Vetinari" <h.vetinari@gmx.com>
Date: Sun, 15 Sep 2024 10:49:13 +0200
Subject: [PATCH 7/7] remove `-std=c++14` from activation

---
 recipes/emscripten-activation/activate.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/recipes/emscripten-activation/activate.sh b/recipes/emscripten-activation/activate.sh
index ca187f7beb6ed..e2d090ce5f5f7 100644
--- a/recipes/emscripten-activation/activate.sh
+++ b/recipes/emscripten-activation/activate.sh
@@ -37,7 +37,7 @@ if [ -z ${CONDA_FORGE_EMSCRIPTEN_ACTIVATED+x} ]; then
     export DBGFLAGS_USED="-g0"
 
     # basics ld
-    export LDFLAGS_BASE="-s MODULARIZE=1 -s LINKABLE=1 -s EXPORT_ALL=1 -s WASM=1 -std=c++14 -s LZ4=1"
+    export LDFLAGS_BASE="-sMODULARIZE=1 -sLINKABLE=1 -sEXPORT_ALL=1 -sWASM=1 -sLZ4=1"
     export LDFLAGS_BASE="${OPTFLAGS_USED} ${DBGFLAGS_USED} ${LDFLAGS_BASE}"
 
     # basics cflags