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dd8d0e3000
This will override the existing winsymlinks setting. nativestrict will cause ln to fail if it's unable to create a native symlink. Native symlinks are required for the windows dll loader to find the libraries. This script is also used for cross-mingw, but setting CYGWIN shouldn't cause a problem.
46 lines
1.6 KiB
Bash
46 lines
1.6 KiB
Bash
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fixupOutputHooks+=(_linkDLLs)
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# For every *.{exe,dll} in $output/bin/ we try to find all (potential)
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# transitive dependencies and symlink those DLLs into $output/bin
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# so they are found on invocation.
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# (DLLs are first searched in the directory of the running exe file.)
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# The links are relative, so relocating whole /nix/store won't break them.
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_linkDLLs() {
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(
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if [ ! -d "$prefix/bin" ]; then exit; fi
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cd "$prefix/bin"
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# Compose path list where DLLs should be located:
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# prefix $PATH by currently-built outputs
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local DLLPATH=""
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local outName
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for outName in $outputs; do
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addToSearchPath DLLPATH "${!outName}/bin"
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done
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DLLPATH="$DLLPATH:$PATH"
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echo DLLPATH="'$DLLPATH'"
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linkCount=0
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# Iterate over any DLL that we depend on.
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local dll
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for dll in $(objdump -p *.{exe,dll} | sed -n 's/.*DLL Name: \(.*\)/\1/p' | sort -u); do
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if [ -e "./$dll" ]; then continue; fi
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# Locate the DLL - it should be an *executable* file on $DLLPATH.
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local dllPath="$(PATH="$DLLPATH" type -P "$dll")"
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if [ -z "$dllPath" ]; then continue; fi
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# That DLL might have its own (transitive) dependencies,
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# so add also all DLLs from its directory to be sure.
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local dllPath2
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for dllPath2 in "$dllPath" "$(dirname $(readlink "$dllPath" || echo "$dllPath"))"/*.dll; do
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if [ -e ./"$(basename "$dllPath2")" ]; then continue; fi
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CYGWIN+=\ winsymlinks:nativestrict ln -sr "$dllPath2" .
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linkCount=$(($linkCount+1))
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done
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done
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echo "Created $linkCount DLL link(s) in $prefix/bin"
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)
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}
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