39a5f4a6ee
Based on the derivation from xcbuild.sdk. apple_sdk.sdkRoot provides version plists and a hook that passes them automatically to the compiler as `-isysroot`. This is needed to correctly set the SDK version in compiled binaries. Otherwise, clang will infer the SDK version to be the same as the deployment target, which is usually not what you want.
69 lines
1.9 KiB
Nix
69 lines
1.9 KiB
Nix
{
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lib,
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runCommand,
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writeText,
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sdkVersion,
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}:
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let
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sdkName = "MacOSX${sdkVersion}";
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toolchainName = "com.apple.dt.toolchain.XcodeDefault";
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productBuildVer = null;
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inherit (lib.generators) toPlist toJSON;
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SDKSettings = {
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CanonicalName = "macosx${sdkVersion}";
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DisplayName = "macOS ${sdkVersion}";
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Toolchains = [ toolchainName ];
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Version = sdkVersion;
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MaximumDeploymentTarget = "${sdkVersion}.99";
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isBaseSDK = "YES";
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};
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SystemVersion =
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lib.optionalAttrs (productBuildVer != null) { ProductBuildVersion = productBuildVer; }
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// {
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ProductName = "macOS";
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ProductVersion = sdkVersion;
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};
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in
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runCommand "sdkroot-${sdkVersion}" { } ''
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sdk="$out/${sdkName}.sdk"
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install -D ${writeText "SDKSettings.plist" (toPlist { } SDKSettings)} "$sdk/SDKSettings.plist"
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install -D ${writeText "SDKSettings.json" (toJSON { } SDKSettings)} "$sdk/SDKSettings.json"
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install -D ${
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writeText "SystemVersion.plist" (toPlist { } SystemVersion)
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} "$sdk/System/Library/CoreServices/SystemVersion.plist"
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ln -s "$sdk" "$sdk/usr"
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install -D '${../../../build-support/setup-hooks/role.bash}' "$out/nix-support/setup-hook"
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cat >> "$out/nix-support/setup-hook" <<-hook
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#
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# See comments in cc-wrapper's setup hook. This works exactly the same way.
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#
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[[ -z \''${strictDeps-} ]] || (( "\$hostOffset" < 0 )) || return 0
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sdkRootHook() {
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# See ../../../build-support/setup-hooks/role.bash
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local role_post
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getHostRoleEnvHook
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# Only set the SDK root if one has not been set via this hook or some other means.
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if [[ ! \$NIX_CFLAGS_COMPILE =~ isysroot ]]; then
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export NIX_CFLAGS_COMPILE\''${role_post}+=' -isysroot $out/${sdkName}.sdk'
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fi
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}
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# See ../../../build-support/setup-hooks/role.bash
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getTargetRole
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addEnvHooks "\$targetOffset" sdkRootHook
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# No local scope in sourced file
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unset -v role_post
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hook
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''
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