nixpkgs/pkgs/os-specific/darwin/apple-sdk/framework-setup-hook.sh
2017-08-28 23:25:11 +02:00

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# On macOS, frameworks are linked to the system CoreFoundation but
# dynamic libraries built with nix use a pure version of CF this
# causes segfaults for binaries that depend on it at runtime. This
# can be solved in two ways.
# 1. Rewrite references to the pure CF using this setup hook, this
# works for the simple case but this can still cause problems if other
# dependencies (eg. python) use the pure CF.
# 2. Create a wrapper for the binary that sets DYLD_FRAMEWORK_PATH to
# /System/Library/Frameworks. This will make everything load the
# system's CoreFoundation framework while still keeping the
# dependencies pure for other packages.
fixupOutputHooks+=('fixDarwinFrameworksIn $prefix')
fixDarwinFrameworks() {
local systemPrefix='/System/Library/Frameworks'
for fn in "$@"; do
if [ -L "$fn" ]; then continue; fi
echo "$fn: fixing dylib"
for framework in $(otool -L "$fn" | awk '/CoreFoundation\.framework/ {print $1}'); do
install_name_tool -change "$framework" "$systemPrefix/CoreFoundation.framework/Versions/A/CoreFoundation" "$fn" >&2
done
done
}
fixDarwinFrameworksIn() {
local dir="$1"
fixDarwinFrameworks $(find "$dir" -name "*.dylib")
}
# This configures the stdenv to use /System/Library/Frameworks/CoreFoundation.framework
# instead of the nix version by including the system frameworks path
# as an rpath entry when creating binaries.
useSystemCoreFoundationFramework () {
export NIX_COREFOUNDATION_RPATH=/System/Library/Frameworks
}
envHooks+=(useSystemCoreFoundationFramework)