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nixpkgs mirror (for testing)
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nix
1# On macOS, binaries refer to dynamic library dependencies using
2# either relative paths (e.g. "libicudata.dylib", searched relative to
3# $DYLD_LIBRARY_PATH) or absolute paths
4# (e.g. "/nix/store/.../lib/libicudata.dylib"). In Nix, the latter is
5# preferred since it allows programs to just work. When linking
6# against a library (e.g. "-licudata"), the linker uses the install
7# name embedded in the dylib (which can be shown using "otool -D").
8# Most packages create dylibs with absolute install names, but some do
9# not. This setup hook fixes dylibs by setting their install names to
10# their absolute path (using "install_name_tool -id"). It also
11# rewrites references in other dylibs to absolute paths.
12
13fixupOutputHooks+=('fixDarwinDylibNamesIn $prefix')
14
15fixDarwinDylibNames() {
16 local flags=()
17 local old_id
18
19 for fn in "$@"; do
20 flags+=(-change "$(basename "$fn")" "$fn")
21 done
22
23 for fn in "$@"; do
24 if [ -L "$fn" ]; then continue; fi
25 echo "$fn: fixing dylib"
26 set +e
27 int_out=$(@targetPrefix@install_name_tool -id "$fn" "${flags[@]}" "$fn" 2>&1)
28 result=$?
29 set -e
30 if [ "$result" -ne 0 ] &&
31 ! grep -q -e "shared library stub file and can't be changed" \
32 -e "is not a Mach-O file" <<< "$int_out"
33 then
34 echo "$int_out" >&2
35 exit "$result"
36 fi
37 done
38}
39
40fixDarwinDylibNamesIn() {
41 local dir="$1"
42 fixDarwinDylibNames $(find "$dir" -name "*.dylib" -o -name "*.so" -o -name "*.so.*")
43}