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mkoeppeCopilotDerThorstenIsabelParedes
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Add passagemath-{environment,setup}, cysignals, passagemath-{objects,repl}, memory-allocator, passagemath-{categories,graphs}, symmetrica, passagemath-combinat, gsl, passagemath-modules, cmr, passagemath-cmr (emscripten-forge#4446)
* Add cysignals recipe for emscripten-wasm32 platform Co-authored-by: DerThorsten <904752+DerThorsten@users.noreply.github.com> * Add meson-python requirement * Add build.sh script and emscripten.meson.cross file for cysignals Co-authored-by: IsabelParedes <23283243+IsabelParedes@users.noreply.github.com> * Add pkg-config to cysignals recipe dependencies * Delete pixi.lock * recipes/recipes_emscripten/passagemath-environment: New * recipes/recipes_emscripten/passagemath-environment/recipe.yaml: Update requirements as example 'regex' seems to suggest, add extra/recipe-maintainers * recipes/recipes_emscripten/passagemath-environment/recipe.yaml: Add about/license, about/license_file * recipes/recipes_emscripten/passagemath-environment/recipe.yaml: Adapt tests, extra/emscripten_tests from brotli recipe * recipes/recipes_emscripten/passagemath-setup: New * recipes/recipes_emscripten/passagemath-objects: New * recipes/recipes_emscripten/cysignals/recipe.yaml: Update to 1.12.6 * recipes/recipes_emscripten/cysignals: Add patch * recipes/recipes_emscripten/cysignals/recipe.yaml: Update license_file * recipes/recipes_emscripten/cysignals: Add sigaltstack patch * recipes/recipes_emscripten/cysignals/build.sh: Set c_thread_count=0 * recipes/recipes_emscripten/cysignals/test_import_cysignals.py: Do not try to import what can only be cimported * recipes/recipes_emscripten/cysignals: Patch out use of threads * recipes/recipes_emscripten/passagemath-*: Update to 10.8.1 * recipes/recipes_emscripten/passagemath-categories: New * recipes/recipes_emscripten/memory-allocator: New * recipes/recipes_emscripten/passagemath-categories: Add memory-allocator dep * recipes/recipes_emscripten/memory-allocator/recipe.yaml: Add license * recipes/recipes_emscripten/passagemath-repl: New * recipes/recipes_emscripten/passagemath-categories: Add tests * recipes/recipes_emscripten/passagemath-repl: Add ipython dep * recipes/recipes_emscripten/passagemath-categories: Disable many tests * recipes/recipes_emscripten/passagemath-categories/test_passagemath_categories.py: Do not try to run doctests * recipes/recipes_emscripten/passagemath-graphs: New * recipes/recipes_emscripten/passagemath-categories/test_passagemath_categories.py: Do not try to run doctests at all * recipes/recipes_emscripten/symmetrica: New * recipes/recipes_emscripten/passagemath-combinat: New * recipes/recipes_emscripten/gsl: New * recipes/recipes_emscripten/passagemath-modules: New * recipes/recipes_emscripten/gsl/build.sh: Use openblas * recipes/recipes_emscripten/gsl: Fixups * variant.yaml: Pin gsl to 2.8 * recipes/recipes_emscripten/passagemath-modules: Add deps * recipes/recipes_emscripten/cmr: New * recipes/recipes_emscripten/passagemath-cmr: New * .github/workflows/build_recipes.yaml: Upload packages as an artifact * recipes/recipes_emscripten/cysignals/recipe.yaml: Update extra/recipe-maintainers * recipes/recipes_emscripten/passagemath-environment/recipe.yaml: Remove commented-out extra deps * recipes/recipes_emscripten/symmetrica/recipe.yaml: Test presence of lib/libsymmetrica.a * recipes/recipes_emscripten/passagemath-*: Shorten the autogenerated long descriptions * recipes/recipes_emscripten/gsl: Remove openblas dependency * recipes/recipes_emscripten/cysignals: Make patches sequential * recipes/recipes_emscripten/cmr/build.sh: Copy wasm files also * recipes/recipes_emscripten/cmr/build.sh: Copy wasm files also (fixup) --------- Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: DerThorsten <904752+DerThorsten@users.noreply.github.com> Co-authored-by: Isabel Paredes <isabel.paredes@quantstack.net> Co-authored-by: IsabelParedes <23283243+IsabelParedes@users.noreply.github.com>
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‎recipes/recipes_emscripten/cmr/build.sh‎

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mkdir build
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cd build
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mkdir -p $PREFIX
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# Configure step
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cmake ${CMAKE_ARGS} .. \
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-GNinja \
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-DCMAKE_PREFIX_PATH:PATH=${PREFIX} \
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-DCMAKE_INSTALL_PREFIX:PATH=${PREFIX} \
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-DCMAKE_POSITION_INDEPENDENT_CODE=ON \
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-DCMAKE_BUILD_TYPE=Release
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ninja install
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# Copy wasm files also
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cp *.wasm $PREFIX/bin/

‎recipes/recipes_emscripten/cmr/recipe.yaml‎

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context:
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version: 1.4
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package:
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name: cmr
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version: ${{ version }}
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source:
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url: https://github.com/discopt/cmr/archive/refs/tags/v${{ version }}.tar.gz
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sha256: 956a6114d7ee2d3176376660ab1221306da9b2f6de985825d8e60c9cbdf41c17
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build:
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number: 0
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requirements:
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build:
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- ${{ compiler("cxx") }}
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- cmake
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- ninja
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- gmp
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- gtest
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tests:
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- script:
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- test -d ${PREFIX}/include/cmr
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about:
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license: MIT
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license_file: LICENSE
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summary: Combinatorial matrix recognition
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homepage: https://github.com/discopt/cmr
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extra:
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recipe-maintainers:
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- mkoeppe

‎recipes/recipes_emscripten/cysignals/build.sh‎

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cp $RECIPE_DIR/emscripten.meson.cross $SRC_DIR
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# write out the cross file
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sed "s|@(PYTHON)|${PYTHON}|g" $SRC_DIR/emscripten.meson.cross > $SRC_DIR/emscripten.meson.new
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mv $SRC_DIR/emscripten.meson.new $SRC_DIR/emscripten.meson.cross
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cat $SRC_DIR/emscripten.meson.cross
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${PYTHON} -m pip install . -vvv --no-deps --no-build-isolation \
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-Csetup-args="--cross-file=$SRC_DIR/emscripten.meson.cross" \
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-Csetup-args="-Dc_thread_count=0"

‎recipes/recipes_emscripten/cysignals/emscripten.meson.cross‎

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# binaries section is at the end as may want to append python binary.
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[properties]
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needs_exe_wrapper = true
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skip_sanity_check = true
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longdouble_format = 'IEEE_QUAD_LE' # for numpy
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[host_machine]
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system = 'emscripten'
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cpu_family = 'wasm32'
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cpu = 'wasm'
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endian = 'little'
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[binaries]
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exe_wrapper = 'node'
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pkgconfig = 'pkg-config'
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python = '@(PYTHON)'

‎recipes/recipes_emscripten/cysignals/patches/0001-src-cysignals-implementation.c-Only-use-backtrace-wh.patch‎

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From 4bc25048707657e93bfd0169a0bb0bad7421773c Mon Sep 17 00:00:00 2001
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From: Matthias Koeppe <mkoeppe@math.ucdavis.edu>
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Date: Mon, 9 Feb 2026 18:25:33 -0800
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Subject: [PATCH 1/3] src/cysignals/implementation.c: Only use backtrace when
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both HAVE_BACKTRACE and HAVE_EXECINFO_H
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---
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src/cysignals/implementation.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/src/cysignals/implementation.c b/src/cysignals/implementation.c
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index 88dee66..5f8f3e5 100644
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--- a/src/cysignals/implementation.c
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+++ b/src/cysignals/implementation.c
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@@ -719,7 +719,7 @@ static void print_sep(void)
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/* Print a backtrace if supported by libc */
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static void print_backtrace()
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{
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-#if HAVE_BACKTRACE
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+#if HAVE_BACKTRACE && HAVE_EXECINFO_H
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void* backtracebuffer[BACKTRACELEN];
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int btsize = backtrace(backtracebuffer, BACKTRACELEN);
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if (btsize)
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--
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2.51.1
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‎recipes/recipes_emscripten/cysignals/patches/0002-meson.build-Do-not-use-threads-on-emscripten.patch‎

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From fb6cde9a76a6245adfdf2a905d28797b7dd8aaec Mon Sep 17 00:00:00 2001
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From: Matthias Koeppe <mkoeppe@math.ucdavis.edu>
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Date: Wed, 11 Feb 2026 10:50:16 -0800
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Subject: [PATCH 2/3] meson.build: Do not use threads on emscripten
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---
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meson.build | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/meson.build b/meson.build
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index 2253bcd..8082e2d 100644
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--- a/meson.build
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+++ b/meson.build
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@@ -15,6 +15,7 @@ is_windows = host_machine.system() == 'windows'
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is_cygwin = host_machine.system() == 'cygwin'
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is_msvc = cc.get_id() == 'msvc'
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is_mingw = cc.get_id()=='gcc' and host_machine.system()=='windows'
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+is_emscripten = host_machine.system() == 'emscripten'
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# Set preprocessor macros
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# Disable .c line numbers in exception tracebacks
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@@ -94,7 +95,7 @@ config.set('CYSIGNALS_STD_ATOMIC', cxx.links('#include <atomic>\nint main() { st
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# for std::atomic with OpenMP in C++ code
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config.set('CYSIGNALS_STD_ATOMIC_WITH_OPENMP', cxx.links('#include <atomic>\nint main() { static std::atomic<int> x; return 0; }', args: ['-fopenmp']) ? 1 : 0)
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-if is_windows
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+if is_windows or is_emscripten
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threads_dep = []
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else
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threads_dep = dependency('threads')
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--
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2.51.1
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‎recipes/recipes_emscripten/cysignals/patches/0003-src-cysignals-implementation.c-EMSCRIPTEN-Do-not-use.patch‎

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From 2ce8b6b240072d218ece162fb3705ad318472a46 Mon Sep 17 00:00:00 2001
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From: Matthias Koeppe <mkoeppe@math.ucdavis.edu>
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Date: Wed, 24 Jan 2024 23:24:45 -0800
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Subject: [PATCH 3/3] src/cysignals/implementation.c [EMSCRIPTEN]: Do not use
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sigaltstack
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---
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src/cysignals/implementation.c | 4 +++-
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1 file changed, 3 insertions(+), 1 deletion(-)
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diff --git a/src/cysignals/implementation.c b/src/cysignals/implementation.c
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index 5f8f3e5..ae27eee 100644
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--- a/src/cysignals/implementation.c
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+++ b/src/cysignals/implementation.c
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@@ -632,7 +632,7 @@ static void _sig_off_warning(const char* file, int line)
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static void setup_alt_stack(void)
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{
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-#if HAVE_SIGALTSTACK
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+#if HAVE_SIGALTSTACK && !defined(__EMSCRIPTEN__)
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/* Space for the alternate signal stack. The size should be
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* of the form MINSIGSTKSZ + constant. The constant is chosen rather
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* ad hoc but sufficiently large. */
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@@ -675,7 +675,9 @@ static void setup_cysignals_handlers(void)
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* After setting up the trampoline, we reset the signal mask. */
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sigprocmask(SIG_BLOCK, &sa.sa_mask, &default_sigmask);
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#endif
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+#if !defined(__EMSCRIPTEN__)
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setup_trampoline();
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+#endif
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#if HAVE_SIGPROCMASK
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sigprocmask(SIG_SETMASK, &default_sigmask, &sigmask_with_sigint);
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#endif
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--
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2.51.1
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‎recipes/recipes_emscripten/cysignals/recipe.yaml‎

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context:
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name: cysignals
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version: 1.12.6
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package:
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name: ${{ name }}
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version: ${{ version }}
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source:
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url: https://pypi.io/packages/source/${{ name[0] }}/${{ name }}/${{ name }}-${{ version }}.tar.gz
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sha256: 3ef3a37bdb244821b85475a08e2762ca1019570b369e321504995fa9a54675ce
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patches: # from https://github.com/passagemath/upstream-cysignals
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- 'patches/0001-src-cysignals-implementation.c-Only-use-backtrace-wh.patch'
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- 'patches/0002-meson.build-Do-not-use-threads-on-emscripten.patch'
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- 'patches/0003-src-cysignals-implementation.c-EMSCRIPTEN-Do-not-use.patch'
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build:
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number: 0
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requirements:
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build:
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- ${{ compiler('c') }}
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- cython
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- cross-python_${{ target_platform }}
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- python
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- pip
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- meson-python
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- pkg-config
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host:
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- python
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run:
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- python
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tests:
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- script: pytester
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files:
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recipe:
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- test_import_cysignals.py
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requirements:
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build:
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- pytester
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run:
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- pytester-run
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about:
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homepage: https://github.com/sagemath/cysignals
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license: LGPL-3.0-or-later
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license_file: LICENSE
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summary: Interrupt and signal handling for Cython
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description: |
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When writing Cython code, special care must be taken to ensure that the code
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can be interrupted with CTRL-C. Since Cython optimizes for speed, Cython
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normally does not check for interrupts. For example, code like the following
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cannot be interrupted in Cython:
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cdef long i
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for i in range(2^63):
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if i > 2^60:
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print i
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The cysignals package provides mechanisms to handle interrupts (and other
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signals and errors) in Cython code.
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extra:
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recipe-maintainers:
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- mkoeppe

‎recipes/recipes_emscripten/cysignals/test_import_cysignals.py‎

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def test_import_cysignals():
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import cysignals

‎recipes/recipes_emscripten/gsl/build.sh‎

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emconfigure ./configure \
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CFLAGS="$CFLAGS -fPIC" \
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--prefix=${PREFIX} \
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--disable-shared
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emmake make -j${CPU_COUNT}
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emmake make install

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