Luke Granger-Brown
57725ef3ec
git-subtree-dir: third_party/nixpkgs git-subtree-split: 76612b17c0ce71689921ca12d9ffdc9c23ce40b2
214 lines
8.2 KiB
Bash
214 lines
8.2 KiB
Bash
# The base package for automatic multiple-output splitting. Used in stdenv as well.
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preConfigureHooks+=(_multioutConfig)
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preFixupHooks+=(_multioutDocs)
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preFixupHooks+=(_multioutDevs)
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postFixupHooks+=(_multioutPropagateDev)
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# _assignFirst varName otherVarNames*
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#
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# Set the value of the variable named $varName to the first of otherVarNames
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# that refers to a non-empty variable name.
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#
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# If none of otherVarNames refers to a non-empty variable, the error message is
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# specific to this function's use case, which is setting up the output variables.
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_assignFirst() {
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local varName="$1"
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local _var
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local REMOVE=REMOVE # slightly hacky - we allow REMOVE (i.e. not a variable name)
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shift
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for _var in "$@"; do
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if [ -n "${!_var-}" ]; then eval "${varName}"="${_var}"; return; fi
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done
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echo
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echo "error: _assignFirst: could not find a non-empty variable whose name to assign to ${varName}."
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echo " The following variables were all unset or empty:"
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echo " $*"
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if [ -z "${out:-}" ]; then
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echo ' If you do not want an "out" output in your derivation, make sure to define'
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echo ' the other specific required outputs. This can be achieved by picking one'
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echo " of the above as an output."
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echo ' You do not have to remove "out" if you want to have a different default'
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echo ' output, because the first output is taken as a default.'
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echo
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fi
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return 1 # none found
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}
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# Same as _assignFirst, but only if "$1" = ""
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_overrideFirst() {
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if [ -z "${!1-}" ]; then
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_assignFirst "$@"
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fi
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}
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# Setup chains of sane default values with easy overridability.
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# The variables are global to be usable anywhere during the build.
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# Typical usage in package is defining outputBin = "dev";
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_overrideFirst outputDev "dev" "out"
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_overrideFirst outputBin "bin" "out"
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_overrideFirst outputInclude "$outputDev"
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# so-libs are often among the main things to keep, and so go to $out
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_overrideFirst outputLib "lib" "out"
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_overrideFirst outputDoc "doc" "out"
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_overrideFirst outputDevdoc "devdoc" REMOVE # documentation for developers
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# man and info pages are small and often useful to distribute with binaries
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_overrideFirst outputMan "man" "$outputBin"
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_overrideFirst outputDevman "devman" "devdoc" "$outputMan"
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_overrideFirst outputInfo "info" "$outputBin"
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# Add standard flags to put files into the desired outputs.
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_multioutConfig() {
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if [ "$(getAllOutputNames)" = "out" ] || [ -z "${setOutputFlags-1}" ]; then return; fi;
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# try to detect share/doc/${shareDocName}
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# Note: sadly, $configureScript detection comes later in configurePhase,
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# and reordering would cause more trouble than worth.
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if [ -z "${shareDocName:-}" ]; then
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local confScript="${configureScript:-}"
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if [ -z "$confScript" ] && [ -x ./configure ]; then
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confScript=./configure
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fi
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if [ -f "$confScript" ]; then
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local shareDocName="$(sed -n "s/^PACKAGE_TARNAME='\(.*\)'$/\1/p" < "$confScript")"
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fi
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# PACKAGE_TARNAME sometimes contains garbage.
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if [ -z "$shareDocName" ] || echo "$shareDocName" | grep -q '[^a-zA-Z0-9_-]'; then
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shareDocName="$(echo "$name" | sed 's/-[^a-zA-Z].*//')"
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fi
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fi
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prependToVar configureFlags \
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--bindir="${!outputBin}"/bin --sbindir="${!outputBin}"/sbin \
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--includedir="${!outputInclude}"/include --oldincludedir="${!outputInclude}"/include \
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--mandir="${!outputMan}"/share/man --infodir="${!outputInfo}"/share/info \
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--docdir="${!outputDoc}"/share/doc/"${shareDocName}" \
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--libdir="${!outputLib}"/lib --libexecdir="${!outputLib}"/libexec \
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--localedir="${!outputLib}"/share/locale
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prependToVar installFlags \
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pkgconfigdir="${!outputDev}"/lib/pkgconfig \
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m4datadir="${!outputDev}"/share/aclocal aclocaldir="${!outputDev}"/share/aclocal
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}
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# Add rpath prefixes to library paths, and avoid stdenv doing it for $out.
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_addRpathPrefix "${!outputLib}"
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NIX_NO_SELF_RPATH=1
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# Move subpaths that match pattern $1 from under any output/ to the $2 output/
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# Beware: only globbing patterns are accepted, e.g.: * ? [abc]
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# A special target "REMOVE" is allowed: moveToOutput foo REMOVE
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moveToOutput() {
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local patt="$1"
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local dstOut="$2"
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local output
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for output in $(getAllOutputNames); do
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if [ "${!output}" = "$dstOut" ]; then continue; fi
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local srcPath
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for srcPath in "${!output}"/$patt; do
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# apply to existing files/dirs, *including* broken symlinks
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if [ ! -e "$srcPath" ] && [ ! -L "$srcPath" ]; then continue; fi
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if [ "$dstOut" = REMOVE ]; then
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echo "Removing $srcPath"
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rm -r "$srcPath"
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else
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local dstPath="$dstOut${srcPath#${!output}}"
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echo "Moving $srcPath to $dstPath"
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if [ -d "$dstPath" ] && [ -d "$srcPath" ]
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then # attempt directory merge
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# check the case of trying to move an empty directory
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rmdir "$srcPath" --ignore-fail-on-non-empty
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if [ -d "$srcPath" ]; then
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mv -t "$dstPath" "$srcPath"/*
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rmdir "$srcPath"
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fi
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else # usual move
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mkdir -p "$(readlink -m "$dstPath/..")"
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mv "$srcPath" "$dstPath"
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fi
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fi
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# remove empty directories, printing iff at least one gets removed
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local srcParent="$(readlink -m "$srcPath/..")"
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if [ -n "$(find "$srcParent" -maxdepth 0 -type d -empty 2>/dev/null)" ]; then
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echo "Removing empty $srcParent/ and (possibly) its parents"
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rmdir -p --ignore-fail-on-non-empty "$srcParent" \
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2> /dev/null || true # doesn't ignore failure for some reason
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fi
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done
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done
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}
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# Move documentation to the desired outputs.
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_multioutDocs() {
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local REMOVE=REMOVE # slightly hacky - we expand ${!outputFoo}
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moveToOutput share/info "${!outputInfo}"
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moveToOutput share/doc "${!outputDoc}"
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moveToOutput share/gtk-doc "${!outputDevdoc}"
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moveToOutput share/devhelp/books "${!outputDevdoc}"
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# the default outputMan is in $bin
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moveToOutput share/man "${!outputMan}"
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moveToOutput share/man/man3 "${!outputDevman}"
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}
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# Move development-only stuff to the desired outputs.
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_multioutDevs() {
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if [ "$(getAllOutputNames)" = "out" ] || [ -z "${moveToDev-1}" ]; then return; fi;
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moveToOutput include "${!outputInclude}"
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# these files are sometimes provided even without using the corresponding tool
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moveToOutput lib/pkgconfig "${!outputDev}"
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moveToOutput share/pkgconfig "${!outputDev}"
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moveToOutput lib/cmake "${!outputDev}"
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moveToOutput share/aclocal "${!outputDev}"
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# don't move *.la, as libtool needs them in the directory of the library
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for f in "${!outputDev}"/{lib,share}/pkgconfig/*.pc; do
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echo "Patching '$f' includedir to output ${!outputInclude}"
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sed -i "/^includedir=/s,=\${prefix},=${!outputInclude}," "$f"
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done
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}
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# Make the "dev" propagate other outputs needed for development.
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_multioutPropagateDev() {
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if [ "$(getAllOutputNames)" = "out" ]; then return; fi;
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local outputFirst
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for outputFirst in $(getAllOutputNames); do
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break
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done
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local propagaterOutput="$outputDev"
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if [ -z "$propagaterOutput" ]; then
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propagaterOutput="$outputFirst"
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fi
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# Default value: propagate binaries, includes and libraries
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if [ -z "${propagatedBuildOutputs+1}" ]; then
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local po_dirty="$outputBin $outputInclude $outputLib"
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set +o pipefail
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propagatedBuildOutputs=`echo "$po_dirty" \
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| tr -s ' ' '\n' | grep -v -F "$propagaterOutput" \
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| sort -u | tr '\n' ' ' `
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set -o pipefail
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fi
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# The variable was explicitly set to empty or we resolved it so
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if [ -z "$propagatedBuildOutputs" ]; then
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return
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fi
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mkdir -p "${!propagaterOutput}"/nix-support
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for output in $propagatedBuildOutputs; do
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echo -n " ${!output}" >> "${!propagaterOutput}"/nix-support/propagated-build-inputs
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done
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}
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