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

   1 fixupOutputHooks+=(_linkDLLs)
   2
   3 addEnvHooks "$targetOffset" linkDLLGetFolders
   4
   5 linkDLLGetFolders() {
   6     addToSearchPath "LINK_DLL_FOLDERS" "$1/lib"
   7     addToSearchPath "LINK_DLL_FOLDERS" "$1/bin"
   8 }
   9
  10 _linkDLLs() {
  11     linkDLLsInfolder "$prefix/bin"
  12 }
  13
  14 # Try to links every known dependency of exe/dll in the folder of the 1str input
  15 # into said folder, so they are found on invocation.
  16 # (DLLs are first searched in the directory of the running exe file.)
  17 # The links are relative, so relocating whole /nix/store won't break them.
  18 linkDLLsInfolder() {
  19     (
  20         local folder
  21         folder="$1"
  22         if [ ! -d "$folder" ]; then
  23             echo "Not linking DLLs in the non-existent folder $folder"
  24             return
  25         fi
  26         cd "$folder" || exit
  27
  28         # Use associative arrays as set
  29         local filesToChecks
  30         local filesDone
  31         declare -A filesToChecks # files that still needs to have their dependancies checked
  32         declare -A filesDone     # files that had their dependancies checked and who is copied to the bin folder if found
  33
  34         markFileAsDone() {
  35             if [ ! "${filesDone[$1]+a}" ]; then filesDone[$1]=a; fi
  36             if [ "${filesToChecks[$1]+a}" ]; then unset 'filesToChecks[$1]'; fi
  37         }
  38
  39         addFileToLink() {
  40             if [ "${filesDone[$1]+a}" ]; then return; fi
  41             if [ ! "${filesToChecks[$1]+a}" ]; then filesToChecks[$1]=a; fi
  42         }
  43
  44         # Compose path list where DLLs should be located:
  45         #   prefix $PATH by currently-built outputs
  46         local DLLPATH=""
  47         local outName
  48         for outName in $(getAllOutputNames); do
  49             addToSearchPath DLLPATH "${!outName}/bin"
  50         done
  51         DLLPATH="$DLLPATH:$LINK_DLL_FOLDERS"
  52
  53         echo DLLPATH="'$DLLPATH'"
  54
  55         for peFile in *.{exe,dll}; do
  56             if [ -e "./$peFile" ]; then
  57                 addFileToLink "$peFile"
  58             fi
  59         done
  60
  61         local searchPaths
  62         readarray -td: searchPaths < <(printf -- "%s" "$DLLPATH")
  63
  64         local linkCount=0
  65         while [ ${#filesToChecks[*]} -gt 0 ]; do
  66             local listOfDlls=("${!filesToChecks[@]}")
  67             local file=${listOfDlls[0]}
  68             markFileAsDone "$file"
  69             if [ ! -e "./$file" ]; then
  70                 local pathsFound
  71                 readarray -d '' pathsFound < <(find -L "${searchPaths[@]}" -name "$file" -type f -print0)
  72                 if [ ${#pathsFound[@]} -eq 0 ]; then continue; fi
  73                 local dllPath
  74                 dllPath="${pathsFound[0]}"
  75                 CYGWIN+=" winsymlinks:nativestrict" ln -sr "$dllPath" .
  76                 echo "linking $dllPath"
  77                 file="$dllPath"
  78                 linkCount=$((linkCount + 1))
  79             fi
  80             # local dep_file
  81             # Look at the file’s dependancies
  82             for dep_file in $($OBJDUMP -p "$file" | sed -n 's/.*DLL Name: \(.*\)/\1/p' | sort -u); do
  83                 addFileToLink "$dep_file"
  84             done
  85         done
  86
  87         echo "Created $linkCount DLL link(s) in $folder"
  88     )
  89 }