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build(win): add -Wa,-mbig-obj to the mingw cross-compile flags

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Large template/boost-heavy TUs (e.g. asyncrpcoperation.cpp) exceed the standard
PE/COFF ~32k-section limit under mingw-w64, which makes GNU ld emit
"dangerous relocation" on .pdata and crash (SIGSEGV) at link. The bigobj COFF
variant lifts that limit; this is the same flag Bitcoin Core sets for its mingw
host. Fixes the Windows daemon cross-compile.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
DanS
2026-07-23 16:56:13 -05:00
parent d0657d38b4
commit 1c3523aac1
1 changed files with 4 additions and 1 deletions
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5
util/build-win.sh
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@@ -16,7 +16,10 @@ cd ..
./autogen.sh
CONFIG_SITE=$PWD/depends/x86_64-w64-mingw32/share/config.site CXXFLAGS="-DPTW32_STATIC_LIB -DCURL_STATICLIB -fopenmp -pthread" ./configure --prefix="${PREFIX}" --host=x86_64-w64-mingw32 --enable-static --disable-shared
# -Wa,-mbig-obj: the daemon's large template/boost-heavy TUs (e.g. asyncrpcoperation.cpp) exceed the
# standard PE/COFF ~32k-section limit, which makes GNU ld emit "dangerous relocation" on .pdata and
# crash. The bigobj COFF variant lifts that limit (same flag Bitcoin Core sets for the mingw host).
CONFIG_SITE=$PWD/depends/x86_64-w64-mingw32/share/config.site CXXFLAGS="-DPTW32_STATIC_LIB -DCURL_STATICLIB -fopenmp -pthread -Wa,-mbig-obj" ./configure --prefix="${PREFIX}" --host=x86_64-w64-mingw32 --enable-static --disable-shared
# Build CryptoConditions stuff
WD=$PWD