nixpkgs/pkgs/build-support/setup-hooks/multiple-outputs.sh
2014-08-30 23:29:23 +02:00

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# The base package for automatic multiple-output splitting. Used in stdenv as well.
preConfigureHooks+=(_multioutConfig)
preFixupHooks+=(_multioutDocs)
preFixupHooks+=(_multioutDevs)
postFixupHooks+=(_multioutPropagateDev)
# Assign the first string containing nonempty variable to the variable named $1
_assignFirst() {
local varName="$1"
shift
while [ $# -ge 1 ]; do
if [ -n "${!1}" ]; then eval "${varName}"="$1"; return; fi
shift
done
return 1 # none found
}
# Same as _assignFirst, but only if "$1" = ""
_overrideFirst() {
if [ -z "${!1}" ]; then
_assignFirst "$@"
fi
}
# Setup chains of sane default values with easy overridability.
# The variables are global to be usable anywhere during the build.
_overrideFirst outputDev "dev" "out"
_overrideFirst outputBin "bin" "out"
_overrideFirst outputInclude "$outputDev"
# so-libs are often among the main things to keep, and so go to $out
_overrideFirst outputLib "lib" "out"
_overrideFirst outputDoc "doc" "out"
# man and info pages are small and often useful to distribute with binaries
_overrideFirst outputMan "man" "doc" "$outputBin"
_overrideFirst outputInfo "info" "doc" "$outputMan"
# Make stdenv put propagated*BuildInputs into $outputDev instead of $out
propagateIntoOutput="${!outputDev}"
# Add standard flags to put files into the desired outputs.
_multioutConfig() {
if [ "$outputs" = "out" ] || [ -z "${setOutputFlags-1}" ]; then return; fi;
configureFlags="\
--bindir=${!outputBin}/bin --sbindir=${!outputBin}/sbin \
--includedir=${!outputInclude}/include --oldincludedir=${!outputInclude}/include \
--mandir=${!outputMan}/share/man --infodir=${!outputInfo}/share/info \
--docdir=${!outputDoc}/share/doc \
--libdir=${!outputLib}/lib --libexecdir=${!outputLib}/libexec \
$configureFlags"
installFlags="\
pkgconfigdir=${!outputDev}/lib/pkgconfig \
m4datadir=${!outputDev}/share/aclocal aclocaldir=${!outputDev}/share/aclocal \
$installFlags"
}
# Add rpath prefixes to library paths, and avoid stdenv doing it for $out.
_addRpathPrefix "${!outputLib}"
NIX_NO_SELF_RPATH=1
# Move subpaths that match pattern $1 from under any output/ to the $2 output/
_moveToOutput() {
local patt="$1"
local dstOut="$2"
local output
for output in $outputs; do
if [ "${!output}" = "$dstOut" ]; then continue; fi
local srcPath
for srcPath in ${!output}/$patt; do
if [ ! -e "$srcPath" ]; then continue; fi
local dstPath="$dstOut${srcPath#${!output}}"
echo "moving $srcPath to $dstPath"
if [ -d "$dstPath" ] && [ -d "$srcPath" ]
then # attempt directory merge
mv -t "$dstPath" "$srcPath"/*
rmdir "$srcPath"
else # usual move
mkdir -p $(readlink -m "$dstPath/..") # create the parent for $dstPath
mv "$srcPath" "$dstPath"
fi
done
done
}
# Move documentation to the desired outputs.
_multioutDocs() {
if [ "$outputs" = "out" ]; then return; fi;
echo "Looking for documentation to move between outputs"
_moveToOutput share/man "${!outputMan}"
_moveToOutput share/info "${!outputInfo}"
_moveToOutput share/doc "${!outputDoc}"
# Remove empty share directory.
if [ -d "$out/share" ]; then
rmdir "$out/share" 2> /dev/null || true
fi
}
# Move development-only stuff to the desired outputs.
_multioutDevs() {
if [ "$outputs" = "out" ] || [ -z "${moveToDev-1}" ]; then return; fi;
echo "Looking for development-only stuff to move between outputs"
_moveToOutput include "${!outputInclude}"
_moveToOutput lib/pkgconfig "${!outputDev}"
_moveToOutput "lib/*.la" "${!outputDev}"
echo "Patching *.pc includedir to output ${!outputInclude}"
for f in "${!outputDev}"/lib/pkgconfig/*.pc; do
sed -i "/^includedir=/s,=\${prefix},=${!outputInclude}," "$f"
done
}
# Make ${!outputDev} propagate other outputs needed for development
# Note: during the build, probably only the "native" development packages are useful.
# With current cross-building setup, all packages are "native" if not cross-building.
_multioutPropagateDev() {
if [ "$outputs" = "out" ]; then return; fi;
if [ "${!outputInclude}" != "$propagateIntoOutput" ]; then
mkdir -p "$propagateIntoOutput"/nix-support
echo -n " ${!outputInclude}" >> "$propagateIntoOutput"/nix-support/propagated-native-build-inputs
fi
if [ "${!outputLib}" != "$propagateIntoOutput" ]; then
mkdir -p "$propagateIntoOutput"/nix-support
echo -n " ${!outputLib}" >> "$propagateIntoOutput"/nix-support/propagated-native-build-inputs
fi
}