depot/third_party/nixpkgs/pkgs/build-support/setup-hooks/win-dll-link.sh

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fixupOutputHooks+=(_linkDLLs)
addEnvHooks "$targetOffset" linkDLLGetFolders
linkDLLGetFolders() {
addToSearchPath "LINK_DLL_FOLDERS" "$1/lib"
addToSearchPath "LINK_DLL_FOLDERS" "$1/bin"
}
_linkDLLs() {
linkDLLsInfolder "$prefix/bin"
}
# Try to links every known dependency of exe/dll in the folder of the 1str input
# into said folder, so they are found on invocation.
# (DLLs are first searched in the directory of the running exe file.)
# The links are relative, so relocating whole /nix/store won't break them.
linkDLLsInfolder() {
(
local folder
folder="$1"
if [ ! -d "$folder" ]; then
echo "Not linking DLLs in the non-existent folder $folder"
return
fi
cd "$folder" || exit
# Use associative arrays as set
local filesToChecks
local filesDone
declare -A filesToChecks # files that still needs to have their dependancies checked
declare -A filesDone # files that had their dependancies checked and who is copied to the bin folder if found
markFileAsDone() {
if [ ! "${filesDone[$1]+a}" ]; then filesDone[$1]=a; fi
if [ "${filesToChecks[$1]+a}" ]; then unset 'filesToChecks[$1]'; fi
}
addFileToLink() {
if [ "${filesDone[$1]+a}" ]; then return; fi
if [ ! "${filesToChecks[$1]+a}" ]; then filesToChecks[$1]=a; fi
}
# Compose path list where DLLs should be located:
# prefix $PATH by currently-built outputs
local DLLPATH=""
local outName
for outName in $(getAllOutputNames); do
addToSearchPath DLLPATH "${!outName}/bin"
done
DLLPATH="$DLLPATH:$LINK_DLL_FOLDERS"
echo DLLPATH="'$DLLPATH'"
for peFile in *.{exe,dll}; do
if [ -e "./$peFile" ]; then
addFileToLink "$peFile"
fi
done
local searchPaths
readarray -td: searchPaths < <(printf -- "%s" "$DLLPATH")
local linkCount=0
while [ ${#filesToChecks[*]} -gt 0 ]; do
local listOfDlls=("${!filesToChecks[@]}")
local file=${listOfDlls[0]}
markFileAsDone "$file"
if [ ! -e "./$file" ]; then
local pathsFound
readarray -d '' pathsFound < <(find -L "${searchPaths[@]}" -name "$file" -type f -print0)
if [ ${#pathsFound[@]} -eq 0 ]; then continue; fi
local dllPath
dllPath="${pathsFound[0]}"
CYGWIN+=" winsymlinks:nativestrict" ln -sr "$dllPath" .
echo "linking $dllPath"
file="$dllPath"
linkCount=$((linkCount + 1))
fi
# local dep_file
# Look at the files dependancies
for dep_file in $($OBJDUMP -p "$file" | sed -n 's/.*DLL Name: \(.*\)/\1/p' | sort -u); do
addFileToLink "$dep_file"
done
done
echo "Created $linkCount DLL link(s) in $folder"
)
}