move -d:nimRawSetjmp to nim.cfg (#513)

* move -d:nimRawSetjmp to nim.cfg

Refs https://github.com/status-im/nimbus-build-system/issues/44

.github/workflows/ci.yml

@@ -230,10 +230,6 @@ jobs:
         run: |
           export PLATFORM="${{ matrix.target.os }}-${{ matrix.target.cpu }}"
           export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/usr/local/lib"
-          if [[ "${{ matrix.target.os }}" == "windows" ]]; then
-            # https://github.com/status-im/nimbus-eth2/issues/3121
-            export NIMFLAGS="-d:nimRawSetjmp"
-          fi
           nim --version
           nimble --version
           nimble install -y --depsOnly

nim.cfg

@@ -0,0 +1,5 @@
+# Avoid some rare stack corruption while using exceptions with a SEH-enabled
+# toolchain: https://github.com/status-im/nimbus-eth2/issues/3121
+@if windows and not vcc:
+  --define:nimRawSetjmp
+@end

tests/config.nims

@@ -1,4 +0,0 @@
---threads:on
-# rocksdb_backend newChainDB fails compiling without nimOldCaseObjects as
-# rocksdb init does this type of assignment
---define:nimOldCaseObjects

tests/nim.cfg

@@ -0,0 +1,10 @@
+--threads:on
+# rocksdb_backend newChainDB fails compiling without nimOldCaseObjects as
+# rocksdb init does this type of assignment
+--define:nimOldCaseObjects
+
+# Avoid some rare stack corruption while using exceptions with a SEH-enabled
+# toolchain: https://github.com/status-im/nimbus-eth2/issues/3121
+@if windows and not vcc:
+  --define:nimRawSetjmp
+@end