diff options
Diffstat (limited to 'nixpkgs/pkgs/build-support/bintools-wrapper/add-darwin-ldflags-before.sh')
-rw-r--r-- | nixpkgs/pkgs/build-support/bintools-wrapper/add-darwin-ldflags-before.sh | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/build-support/bintools-wrapper/add-darwin-ldflags-before.sh b/nixpkgs/pkgs/build-support/bintools-wrapper/add-darwin-ldflags-before.sh new file mode 100644 index 000000000000..75d9484846a8 --- /dev/null +++ b/nixpkgs/pkgs/build-support/bintools-wrapper/add-darwin-ldflags-before.sh @@ -0,0 +1,81 @@ +# Unconditionally adding in platform version flags will result in warnings that +# will be treated as errors by some packages. Add any missing flags here. + +# There are two things to be configured: the "platform version" (oldest +# supported version of macos, ios, etc), and the "sdk version". +# +# The modern way of configuring these is to use: +# -platform_version $platform $platform_version $sdk_version" +# +# The old way is still supported, and uses flags like: +# -${platform}_version_min $platform_version +# -sdk_version $sdk_version +# +# If both styles are specified ld will combine them. If multiple versions are +# specified for the same platform, ld will emit an error. +# +# The following adds flags for whichever properties have not already been +# provided. + +havePlatformVersionFlag= +haveDarwinSDKVersion= +haveDarwinPlatformVersion= + +# Roles will set by add-flags.sh, but add-flags.sh can be skipped when the +# cc-wrapper has added the linker flags. Both the cc-wrapper and the binutils +# wrapper mangle the same variable (MACOSX_DEPLOYMENT_TARGET), so if roles are +# empty due to being run through the cc-wrapper then the mangle here is a no-op +# and we still do the right thing. +# +# To be robust, make sure we always have the correct set of roles. +accumulateRoles + +mangleVarSingle @darwinMinVersionVariable@ ${role_suffixes[@]+"${role_suffixes[@]}"} + +n=0 +nParams=${#params[@]} +while (( n < nParams )); do + p=${params[n]} + case "$p" in + # the current platform + -@darwinPlatform@_version_min) + haveDarwinPlatformVersion=1 + ;; + + # legacy aliases + -macosx_version_min|-iphoneos_version_min|-iosmac_version_min|-uikitformac_version_min) + haveDarwinPlatformVersion=1 + ;; + + -sdk_version) + haveDarwinSDKVersion=1 + ;; + + -platform_version) + havePlatformVersionFlag=1 + + # If clang can't determine the sdk version it will pass 0.0.0. This + # has runtime effects so we override this to use the known sdk + # version. + if [ "${params[n+3]-}" = 0.0.0 ]; then + params[n+3]=@darwinSdkVersion@ + fi + ;; + esac + n=$((n + 1)) +done + +# If the caller has set -platform_version, trust they're doing the right thing. +# This will be the typical case for clang in nixpkgs. +if [ ! "$havePlatformVersionFlag" ]; then + if [ ! "$haveDarwinSDKVersion" ] && [ ! "$haveDarwinPlatformVersion" ]; then + # Nothing provided. Use the modern "-platform_version" to set both. + extraBefore+=(-platform_version @darwinPlatform@ "${@darwinMinVersionVariable@_@suffixSalt@:-@darwinMinVersion@}" @darwinSdkVersion@) + elif [ ! "$haveDarwinSDKVersion" ]; then + # Add missing sdk version + extraBefore+=(-sdk_version @darwinSdkVersion@) + elif [ ! "$haveDarwinPlatformVersion" ]; then + # Add missing platform version + extraBefore+=(-@darwinPlatform@_version_min "${@darwinMinVersionVariable@_@suffixSalt@:-@darwinMinVersion@}") + fi +fi |