Use webassembly exception handling

It's a bit hard to make the rust compiler play along, see the upstream
PR for the rust difficulties pyodide/pyodide-build#81

Author: hoodmane

Makefile.envs

@@ -143,7 +143,7 @@ export MAIN_MODULE_LDFLAGS= $(LDFLAGS_BASE) \
 	-s LZ4=1 \
 	-s EXPORT_NAME="'_createPyodideModule'" \
 	-s EXPORT_EXCEPTION_HANDLING_HELPERS \
-	-s EXCEPTION_CATCHING_ALLOWED=['we only want to allow exception handling in side modules'] \
+	-fwasm-exceptions \
 	-sEXPORTED_RUNTIME_METHODS='wasmTable,ERRNO_CODES' \
 	-s USE_ZLIB \
 	-s USE_BZIP2 \

packages/RobotRaconteur/meta.yaml

@@ -15,8 +15,8 @@ requirements:
     - numpy
 
 build:
-  cxxflags: -fexceptions -fPIC -DBOOST_SP_DISABLE_THREADS=1 -O2
-  ldflags: -fexceptions
+  cxxflags: -fwasm-exceptions -fPIC -DBOOST_SP_DISABLE_THREADS=1 -O2
+  ldflags: -fwasm-exceptions
   script: |
     export INSTALL_DIR=${WASM_LIBRARY_DIR}
 
@@ -26,7 +26,7 @@ build:
     -DNUMPY_INCLUDE_DIR=$HOSTINSTALLDIR/lib/python$PYMAJOR.$PYMINOR/site-packages/numpy/_core/include/ \
     -DPYTHON3_INCLUDE_DIR=$PYTHONINCLUDE -DPYTHON3_EXECUTABLE=python$PYMAJOR.$PYMINOR \
     -DPYTHON3_LIBRARY=$HOSTINSTALLDIR/lib/python$PYMAJOR.$PYMINOR.a \
-    -DCMAKE_CXX_FLAGS="-fPIC -fexceptions -DBOOST_AP_DISABLE_THREADS=1 -O2 -DBOOST_BIND_GLOBAL_PLACEHOLDERS=1 -Wno-enum-constexpr-conversion" \
+    -DCMAKE_CXX_FLAGS="-fPIC -fwasm-exceptions -DBOOST_AP_DISABLE_THREADS=1 -O2 -DBOOST_BIND_GLOBAL_PLACEHOLDERS=1 -Wno-enum-constexpr-conversion" \
     -DBoost_INCLUDE_DIR=$WASM_LIBRARY_DIR/include -DBoost_LIBRARY_DIR=$WASM_LIBRARY_DIR/lib \
     -DBoost_DATE_TIME_LIBRARY_RELEASE=$WASM_LIBRARY_DIR/lib/libboost_date_time.a \
     -DBoost_DATE_TIME_LIBRARY_DEBUG=$WASM_LIBRARY_DIR/lib/libboost_date_time.a \
@@ -48,7 +48,7 @@ build:
     -DUSE_PREGENERATED_SOURCE=ON \
      .
     emmake make -j ${PYODIDE_JOBS:-3}
-    emcc ${SIDE_MODULE_LDFLAGS} -fexceptions out/lib/libRobotRaconteurCore.a \
+    emcc ${SIDE_MODULE_LDFLAGS} -fwasm-exceptions out/lib/libRobotRaconteurCore.a \
       out/Python3/RobotRaconteur/_RobotRaconteurPython.a \
       $WASM_LIBRARY_DIR/lib/libboost_chrono.a \
       $WASM_LIBRARY_DIR/lib/libboost_date_time.a \

packages/boost-cpp/meta.yaml

@@ -22,8 +22,8 @@ build:
     ./b2 variant=release toolset=clang-emscripten link=static threading=single \
       --with-date_time --with-filesystem \
       --with-system --with-regex --with-chrono --with-random --with-program_options --disable-icu \
-      cxxflags="$SIDE_MODULE_CXXFLAGS -fexceptions -DBOOST_SP_DISABLE_THREADS=1" \
-      cflags="$SIDE_MODULE_CFLAGS -fexceptions -DBOOST_SP_DISABLE_THREADS=1" \
+      cxxflags="$SIDE_MODULE_CXXFLAGS -fwasm-exceptions -DBOOST_SP_DISABLE_THREADS=1" \
+      cflags="$SIDE_MODULE_CFLAGS -fwasm-exceptions -DBOOST_SP_DISABLE_THREADS=1" \
       linkflags="-fpic $SIDE_MODULE_LDFLAGS" \
       --layout=system -j"${PYODIDE_JOBS:-3}" --prefix=${INSTALL_DIR} \
       install

packages/casadi/meta.yaml

@@ -12,11 +12,11 @@ requirements:
 build:
   exports: requested
   cflags: |
-    -fexceptions -frtti
+    -fwasm-exceptions -frtti
   cxxflags: |
-    -fexceptions -frtti
+    -fwasm-exceptions -frtti
   ldflags: |
-    -fexceptions
+    -fwasm-exceptions
 about:
   home: http://casadi.org
   PyPI: https://pypi.org/project/casadi

packages/coolprop/meta.yaml

@@ -16,9 +16,9 @@ source:
       - ./pyproject.toml
 
 build:
-  cflags: -fexceptions
-  cxxflags: -fexceptions
-  ldflags: -fexceptions
+  cflags: -fwasm-exceptions
+  cxxflags: -fwasm-exceptions
+  ldflags: -fwasm-exceptions
 
 requirements:
   run:

packages/cpp-exceptions-test/meta.yaml

@@ -11,9 +11,9 @@ source:
 build:
   type: shared_library
   script: |
-    em++ ${SIDE_MODULE_CFLAGS} -fexceptions -I${PYTHONINCLUDE} -flto -fno-lto -std=c++20 -c throw.cpp -o throw.o
-    em++ ${SIDE_MODULE_CFLAGS} -fexceptions -I${PYTHONINCLUDE} -flto -fno-lto -std=c++20 -c catch.cpp -o catch.o -mreference-types
-    em++ ${SIDE_MODULE_LDFLAGS} -fexceptions  -o ${DISTDIR}/cpp-exceptions-test-throw.so throw.o
-    em++ ${SIDE_MODULE_LDFLAGS} -fexceptions  -o ${DISTDIR}/cpp-exceptions-test-catch.so catch.o
+    em++ ${SIDE_MODULE_CFLAGS} -fwasm-exceptions -I${PYTHONINCLUDE} -flto -fno-lto -std=c++20 -c throw.cpp -o throw.o
+    em++ ${SIDE_MODULE_CFLAGS} -fwasm-exceptions -I${PYTHONINCLUDE} -flto -fno-lto -std=c++20 -c catch.cpp -o catch.o -mreference-types
+    em++ ${SIDE_MODULE_LDFLAGS} -fwasm-exceptions  -o ${DISTDIR}/cpp-exceptions-test-throw.so throw.o
+    em++ ${SIDE_MODULE_LDFLAGS} -fwasm-exceptions  -o ${DISTDIR}/cpp-exceptions-test-catch.so catch.o
 about:
   license: MPL-2.0

packages/cpp-exceptions-test2/meta.yaml

@@ -7,7 +7,7 @@ package:
 source:
   path: src
 build:
-  cxxflags: -fexceptions
-  ldflags: -fexceptions
+  cxxflags: -fwasm-exceptions
+  ldflags: -fwasm-exceptions
 about:
   license: MPL-2.0

packages/matplotlib/meta.yaml

@@ -25,13 +25,13 @@ build:
     -s USE_FREETYPE=1
     -s USE_LIBPNG=1
     -s USE_ZLIB=1
-    -fexceptions
+    -fwasm-exceptions
     -fno-lto
   cxxflags: |
     -std=c++14
-    -fexceptions
+    -fwasm-exceptions
   ldflags: |
-    -fexceptions
+    -fwasm-exceptions
   script: export SETUPTOOLS_SCM_PRETEND_VERSION=$PKG_VERSION
   post: |
     rm -rf matplotlib/backends/qt_editor

packages/scipy/meta.yaml

@@ -54,12 +54,12 @@ build:
     -DUNDERSCORE_G77
     -fvisibility=default
   cxxflags: |
-    -fexceptions
+    -fwasm-exceptions
     -fvisibility=default
   ldflags: |
     -L$(NUMPY_LIB)/core/lib/
     -L$(NUMPY_LIB)/random/lib/
-    -fexceptions
+    -fwasm-exceptions
 
   # Exclude tests via Meson's install tags functionality.
   unvendor-tests: true

packages/shapely/meta.yaml

@@ -11,9 +11,9 @@ build:
   script: |
     export GEOS_CONFIG=${WASM_LIBRARY_DIR}/bin/geos-config
   cxxflags: |
-    -fexceptions
+    -fwasm-exceptions
   ldflags: |
-    -fexceptions
+    -fwasm-exceptions
 requirements:
   run:
     - numpy