139 lines
3.5 KiB
Nix
139 lines
3.5 KiB
Nix
# The wrapper script ensures variables like PKG_CONFIG_PATH and
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# PKG_CONFIG_PATH_FOR_BUILD work properly.
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{ stdenvNoCC
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, lib
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, buildPackages
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, pkg-config
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, baseBinName ? "pkg-config"
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, propagateDoc ? pkg-config != null && pkg-config ? man
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, extraPackages ? [], extraBuildCommands ? ""
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}:
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let
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inherit (lib)
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attrByPath
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getBin
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optional
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optionalAttrs
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optionals
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optionalString
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replaceStrings
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;
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stdenv = stdenvNoCC;
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inherit (stdenv) hostPlatform targetPlatform;
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# Prefix for binaries. Customarily ends with a dash separator.
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#
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# TODO(@Ericson2314) Make unconditional, or optional but always true by
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# default.
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targetPrefix = optionalString (targetPlatform != hostPlatform)
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(targetPlatform.config + "-");
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# See description in cc-wrapper.
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suffixSalt = replaceStrings ["-" "."] ["_" "_"] targetPlatform.config;
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wrapperBinName = "${targetPrefix}${baseBinName}";
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in
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stdenv.mkDerivation {
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pname = targetPrefix + pkg-config.pname + "-wrapper";
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inherit (pkg-config) version;
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enableParallelBuilding = true;
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preferLocalBuild = true;
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outputs = [ "out" ] ++ optionals propagateDoc ([ "man" ] ++ optional (pkg-config ? doc) "doc");
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passthru = {
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inherit targetPrefix suffixSalt;
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inherit pkg-config;
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};
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strictDeps = true;
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dontBuild = true;
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dontConfigure = true;
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dontUnpack = true;
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# Additional flags passed to pkg-config.
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addFlags = optional stdenv.targetPlatform.isStatic "--static";
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installPhase =
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''
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mkdir -p $out/bin $out/nix-support
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wrap() {
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local dst="$1"
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local wrapper="$2"
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export prog="$3"
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substituteAll "$wrapper" "$out/bin/$dst"
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chmod +x "$out/bin/$dst"
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}
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echo $pkg-config > $out/nix-support/orig-pkg-config
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wrap ${wrapperBinName} ${./pkg-config-wrapper.sh} "${getBin pkg-config}/bin/${baseBinName}"
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''
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# symlink in share for autoconf to find macros
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# TODO(@Ericson2314): in the future just make the unwrapped pkg-config a
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# propagated dep once we can rely on downstream deps comming first in
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# search paths. (https://github.com/NixOS/nixpkgs/pull/31414 took a crack
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# at this.)
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+ ''
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ln -s ${pkg-config}/share $out/share
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'';
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setupHooks = [
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../setup-hooks/role.bash
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./setup-hook.sh
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];
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postFixup =
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##
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## User env support
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##
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# Propagate the underling unwrapped pkg-config so that if you
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# install the wrapper, you get anything else it might provide.
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''
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printWords ${pkg-config} > $out/nix-support/propagated-user-env-packages
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''
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##
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## Man page and doc support
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##
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+ optionalString propagateDoc (''
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ln -s ${pkg-config.man} $man
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'' + optionalString (pkg-config ? doc) ''
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ln -s ${pkg-config.doc} $doc
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'')
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+ ''
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substituteAll ${./add-flags.sh} $out/nix-support/add-flags.sh
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substituteAll ${../wrapper-common/utils.bash} $out/nix-support/utils.bash
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''
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##
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## Extra custom steps
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##
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+ extraBuildCommands;
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env = {
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shell = getBin stdenvNoCC.shell + stdenvNoCC.shell.shellPath or "";
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wrapperName = "PKG_CONFIG_WRAPPER";
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inherit targetPrefix suffixSalt baseBinName;
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};
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meta =
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let pkg-config_ = optionalAttrs (pkg-config != null) pkg-config; in
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(optionalAttrs (pkg-config_ ? meta) (removeAttrs pkg-config.meta ["priority" "mainProgram"])) //
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{ description =
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attrByPath ["meta" "description"] "pkg-config" pkg-config_
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+ " (wrapper script)";
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priority = 10;
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mainProgram = wrapperBinName;
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};
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}
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