82 lines
3 KiB
Bash
82 lines
3 KiB
Bash
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# Unconditionally adding in platform version flags will result in warnings that
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# will be treated as errors by some packages. Add any missing flags here.
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# There are two things to be configured: the "platform version" (oldest
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# supported version of macos, ios, etc), and the "sdk version".
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#
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# The modern way of configuring these is to use:
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# -platform_version $platform $platform_version $sdk_version"
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#
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# The old way is still supported, and uses flags like:
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# -${platform}_version_min $platform_version
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# -sdk_version $sdk_version
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#
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# If both styles are specified ld will combine them. If multiple versions are
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# specified for the same platform, ld will emit an error.
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#
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# The following adds flags for whichever properties have not already been
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# provided.
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havePlatformVersionFlag=
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haveDarwinSDKVersion=
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haveDarwinPlatformVersion=
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# Roles will set by add-flags.sh, but add-flags.sh can be skipped when the
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# cc-wrapper has added the linker flags. Both the cc-wrapper and the binutils
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# wrapper mangle the same variable (MACOSX_DEPLOYMENT_TARGET), so if roles are
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# empty due to being run through the cc-wrapper then the mangle here is a no-op
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# and we still do the right thing.
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#
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# To be robust, make sure we always have the correct set of roles.
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accumulateRoles
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mangleVarSingle @darwinMinVersionVariable@ ${role_suffixes[@]+"${role_suffixes[@]}"}
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n=0
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nParams=${#params[@]}
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while (( n < nParams )); do
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p=${params[n]}
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case "$p" in
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# the current platform
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-@darwinPlatform@_version_min)
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haveDarwinPlatformVersion=1
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;;
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# legacy aliases
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-macosx_version_min|-iphoneos_version_min|-iosmac_version_min|-uikitformac_version_min)
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haveDarwinPlatformVersion=1
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;;
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-sdk_version)
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haveDarwinSDKVersion=1
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;;
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-platform_version)
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havePlatformVersionFlag=1
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# If clang can't determine the sdk version it will pass 0.0.0. This
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# has runtime effects so we override this to use the known sdk
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# version.
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if [ "${params[n+3]-}" = 0.0.0 ]; then
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params[n+3]=@darwinSdkVersion@
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fi
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;;
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esac
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n=$((n + 1))
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done
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# If the caller has set -platform_version, trust they're doing the right thing.
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# This will be the typical case for clang in nixpkgs.
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if [ ! "$havePlatformVersionFlag" ]; then
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if [ ! "$haveDarwinSDKVersion" ] && [ ! "$haveDarwinPlatformVersion" ]; then
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# Nothing provided. Use the modern "-platform_version" to set both.
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extraBefore+=(-platform_version @darwinPlatform@ "${@darwinMinVersionVariable@_@suffixSalt@:-@darwinMinVersion@}" @darwinSdkVersion@)
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elif [ ! "$haveDarwinSDKVersion" ]; then
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# Add missing sdk version
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extraBefore+=(-sdk_version @darwinSdkVersion@)
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elif [ ! "$haveDarwinPlatformVersion" ]; then
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# Add missing platform version
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extraBefore+=(-@darwinPlatform@_version_min "${@darwinMinVersionVariable@_@suffixSalt@:-@darwinMinVersion@}")
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fi
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fi
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