From a3445575dbcf379244a22d22a8fed954a290f849 Mon Sep 17 00:00:00 2001
From: Viktor Vaczi <viktor.vaczi@emergence-engineering.com>
Date: Sun, 14 Dec 2025 16:09:04 +0100
Subject: [PATCH] Fix KiCad WASM startup issues
MIME-Version: 1.0
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- Increase thread pool size from 4 to 8 with STRICT=0 to prevent
  "thread pool exhausted" errors when KiCad creates worker threads
- Add thisProgram='/usr/bin/pcbnew' to provide absolute path for
  argv[0], fixing "No meaningful argv[0]" DEBUG check in KiCad

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
---
 scripts/kicad/build-pcbnew.sh    | 2 +-
 tests/wasm-app/kicad/pcbnew.html | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/scripts/kicad/build-pcbnew.sh b/scripts/kicad/build-pcbnew.sh
index 44ba10c..ff94c07 100755
--- a/scripts/kicad/build-pcbnew.sh
+++ b/scripts/kicad/build-pcbnew.sh
@@ -199,7 +199,7 @@ emcmake cmake "${KICAD_DIR}" \
     -DCMAKE_POLICY_VERSION_MINIMUM=3.5 \
     -DCMAKE_CXX_FLAGS="${EXTRA_FLAGS} -pthread -sUSE_ZLIB=1 -DKICAD_USE_PLATFORM_WASM=1 -I${SYSROOT}/include" \
     -DCMAKE_C_FLAGS="${EXTRA_FLAGS} -pthread -sUSE_ZLIB=1 -I${SYSROOT}/include" \
-    -DCMAKE_EXE_LINKER_FLAGS="${LINKER_DEBUG_FLAGS} -pthread -sUSE_ZLIB=1 -sASYNCIFY=1 -sASYNCIFY_STACK_SIZE=65536 -sUSE_PTHREADS=1 -sPTHREAD_POOL_SIZE=4 -sALLOW_MEMORY_GROWTH=1 -sINITIAL_MEMORY=256MB -sMAXIMUM_MEMORY=4GB -sEXPORTED_RUNTIME_METHODS=['ccall','cwrap','UTF8ToString','stringToUTF8','lengthBytesUTF8'] -L${SYSROOT}/lib ${STUBS_BUILD}/libgit2_stub.a ${STUBS_BUILD}/libcurl_stub.a" \
+    -DCMAKE_EXE_LINKER_FLAGS="${LINKER_DEBUG_FLAGS} -pthread -sUSE_ZLIB=1 -sASYNCIFY=1 -sASYNCIFY_STACK_SIZE=65536 -sUSE_PTHREADS=1 -sPTHREAD_POOL_SIZE=8 -sPTHREAD_POOL_SIZE_STRICT=0 -sALLOW_MEMORY_GROWTH=1 -sINITIAL_MEMORY=256MB -sMAXIMUM_MEMORY=4GB -sEXPORTED_RUNTIME_METHODS=['ccall','cwrap','UTF8ToString','stringToUTF8','lengthBytesUTF8'] -L${SYSROOT}/lib ${STUBS_BUILD}/libgit2_stub.a ${STUBS_BUILD}/libcurl_stub.a" \
     -DCMAKE_PREFIX_PATH="${SYSROOT};${WX_BUILD}" \
     -DwxWidgets_CONFIG_EXECUTABLE="${WX_BUILD}/wx-config" \
     \
diff --git a/tests/wasm-app/kicad/pcbnew.html b/tests/wasm-app/kicad/pcbnew.html
index 6b4869b..f1004f0 100644
--- a/tests/wasm-app/kicad/pcbnew.html
+++ b/tests/wasm-app/kicad/pcbnew.html
@@ -106,6 +106,7 @@
     };
 
     var Module = {
+      thisProgram: '/usr/bin/pcbnew',  // Fake absolute path for argv[0] (KiCad DEBUG check)
       preRun: [createCanvas],
       postRun: [],