99 lines
2.9 KiB
Nix
99 lines
2.9 KiB
Nix
{
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lib,
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stdenvNoCC,
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appleDerivation',
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gnused,
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python3,
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unifdef,
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}:
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appleDerivation' stdenvNoCC {
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nativeBuildInputs = [ unifdef ];
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patches = [ ./0001-Support-setting-an-upper-bound-on-versions.patch ];
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buildPhase = ''
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runHook preBuild
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declare -a unifdef_sources=(
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os_availability.modulemap
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os_availability_private.modulemap
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AvailabilityPrivate.modulemap
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)
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unifdef -x2 -UBUILD_FOR_DRIVERKIT -m $(for x in "''${unifdef_sources[@]}"; do echo templates/$x; done)
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runHook postBuild
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'';
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installPhase = ''
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runHook preInstall
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mkdir -p "$out/bin" "$out/libexec" "$out/share/availability"
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cp -r availability.dsl templates "$out/share/availability/"
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substitute availability "$out/libexec/availability" \
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--replace-fail '/usr/bin/env python3' '${lib.getBin python3}/bin/python3' \
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--replace-fail 'f"{os.path.abspath(os.path.dirname(sys.argv[0]))}/' "\"$out/share/availability/"
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chmod a+x "$out/libexec/availability"
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cat <<SCRIPT > "$out/bin/gen-headers"
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#!/usr/bin/env bash
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set -eu
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declare -a headers=(
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Availability.h
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AvailabilityInternal.h
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AvailabilityInternalLegacy.h
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AvailabilityMacros.h
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AvailabilityVersions.h
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os/availability.h
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)
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dest=\$2
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threshold=\$1
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for header in "\''${headers[@]}"; do
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header_src=\''${header/\//_}
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mkdir -p "\$(dirname "\$dest/include/\$header")"
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"$out/libexec/availability" \\
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--threshold "\$threshold" \\
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--preprocess "$out/share/availability/templates/\$header_src" "\$dest/include/\$header"
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done
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# `__ENVIRONMENT_OS_VERSION_MIN_REQUIRED__` is only defined by clang 17+, so define it for older versions.
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${lib.getExe gnused} -E '/#ifndef __MAC_OS_X_VERSION_MIN_REQUIRED/{
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i#ifndef __ENVIRONMENT_OS_VERSION_MIN_REQUIRED__
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i#define __ENVIRONMENT_OS_VERSION_MIN_REQUIRED__ __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__
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i#endif
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}' \\
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-i "\$dest/include/AvailabilityInternal.h"
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# Remove macros from newer SDKs because they can confuse some programs about the SDK version.
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declare -a versionParts=(\''${threshold//./ })
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if [ "\''${versionParts[0]}" == "10" ]; then
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sdkMajor=\''${versionParts[1]}
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sdkMinor=\''${versionParts[2]:-0}
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for minor in \$(seq \$(("\$sdkMinor" + 1)) 9); do
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${lib.getExe gnused} \\
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-E "/VERSION_10_\''${sdkMajor}_\$minor/,/#endif/c\\ */" \\
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-i "\$dest/include/AvailabilityMacros.h"
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done
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for major in \$(seq \$(("\$sdkMajor" + 1)) 15); do
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${lib.getExe gnused} \\
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-E "/VERSION_10_\$major/,/#endif/c\\ */" \\
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-i "\$dest/include/AvailabilityMacros.h"
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done
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fi
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cp "$out/share/availability/templates/os_availability.modulemap" "\$dest/include/"
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SCRIPT
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chmod a+x "$out/bin/gen-headers"
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patchShebangs "$out/bin"
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runHook postInstall
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'';
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meta.mainProgram = "gen-headers";
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}
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