97853c07d7
I believe this reduces surprises and is actually simpler semantically. This is important e.g. for relative symlinks when moving both source and target - now the order of moving won't matter. Fixes #20723 (a particular instance of the surprise).
208 lines
7.6 KiB
Bash
208 lines
7.6 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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# Assign the first string containing nonempty variable to the variable named $1
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_assignFirst() {
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local varName="$1"
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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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while [ $# -ge 1 ]; do
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if [ -n "${!1}" ]; then eval "${varName}"="$1"; return; fi
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shift
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done
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echo "Error: _assignFirst found no valid variant!"
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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 $out
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_overrideFirst outputLib "lib" "out"
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_overrideFirst outputDoc "doc" "out"
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_overrideFirst outputDevdoc "devdoc" REMOVE # documentation for developers
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# man and info pages are small and often useful to distribute with binaries
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_overrideFirst outputMan "man" "doc" "$outputBin"
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_overrideFirst outputDevman "devman" "devdoc" "$outputMan"
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_overrideFirst outputInfo "info" "doc" "$outputMan"
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# Add standard flags to put files into the desired outputs.
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_multioutConfig() {
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if [ "$outputs" = "out" ] || [ -z "${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 [ -n "$shareDocName" ] || echo "$shareDocName" | grep -q '[^a-zA-Z-_0-9]'; 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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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=${!outputLib}/share/locale \
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$configureFlags"
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installFlags="\
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pkgconfigdir=${!outputDev}/lib/pkgconfig \
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m4datadir=${!outputDev}/share/aclocal aclocaldir=${!outputDev}/share/aclocal \
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$installFlags"
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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.: * ? {foo,bar}
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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 $outputs; do
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if [ "${!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 rmdir "$srcParent"; then
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echo "Removing empty $srcParent/ and (possibly) its parents"
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rmdir -p --ignore-fail-on-non-empty "$(readlink -m "$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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# the default outputMan is in $bin
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moveToOutput share/man "${!outputMan}"
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moveToOutput share/man/man3 "${!outputDevman}"
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}
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# Move development-only stuff to the desired outputs.
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_multioutDevs() {
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if [ "$outputs" = "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}," "$f"
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done
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}
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# Make the "dev" propagate other outputs needed for development.
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# Note: with current cross-building setup, all packages are "native" if not cross-building;
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# however, if cross-building, the outputs are non-native. We have to choose the right file.
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_multioutPropagateDev() {
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if [ "$outputs" = "out" ]; then return; fi;
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local outputFirst
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for outputFirst in $outputs; do
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break
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done
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local propagaterOutput="$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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local propagatedBuildInputsFile
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if [ -z "$crossConfig" ]; then
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propagatedBuildInputsFile=propagated-native-build-inputs
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else
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propagatedBuildInputsFile=propagated-build-inputs
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fi
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mkdir -p "${!propagaterOutput}"/nix-support
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for output in $propagatedBuildOutputs; do
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echo -n " ${!output}" >> "${!propagaterOutput}"/nix-support/$propagatedBuildInputsFile
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done
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}
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