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40 lines
1.4 KiB
40 lines
1.4 KiB
# On macOS, binaries refer to dynamic library dependencies using
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# either relative paths (e.g. "libicudata.dylib", searched relative to
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# $DYLD_LIBRARY_PATH) or absolute paths
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# (e.g. "/nix/store/.../lib/libicudata.dylib"). In Nix, the latter is
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# preferred since it allows programs to just work. When linking
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# against a library (e.g. "-licudata"), the linker uses the install
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# name embedded in the dylib (which can be shown using "otool -D").
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# Most packages create dylibs with absolute install names, but some do
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# not. This setup hook fixes dylibs by setting their install names to
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# their absolute path (using "install_name_tool -id"). It also
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# rewrites references in other dylibs to absolute paths.
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fixupOutputHooks+=('fixDarwinDylibNamesIn $prefix')
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fixDarwinDylibNames() {
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local flags=()
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local old_id
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for fn in "$@"; do
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flags+=(-change "$(basename "$fn")" "$fn")
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done
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for fn in "$@"; do
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if [ -L "$fn" ]; then continue; fi
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echo "$fn: fixing dylib"
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int_out=$(@targetPrefix@install_name_tool -id "$fn" "${flags[@]}" "$fn" 2>&1)
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result=$?
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if [ "$result" -ne 0 ] &&
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! grep "shared library stub file and can't be changed" <<< "$out"
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then
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echo "$int_out" >&2
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exit "$result"
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fi
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done
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}
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fixDarwinDylibNamesIn() {
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local dir="$1"
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fixDarwinDylibNames $(find "$dir" -name "*.dylib")
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}
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