nixpkgs/pkgs/stdenv/generic/setup.sh

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# Run the named hook, either by calling the function with that name or
# by evaluating the variable with that name. This allows convenient
# setting of hooks both from Nix expressions (as attributes /
# environment variables) and from shell scripts (as functions).
runHook() {
local hookName="$1"
case "$(type -t $hookName)" in
(function|alias|builtin) $hookName;;
(file) source $hookName;;
(keyword) :;;
(*) eval "${!hookName}";;
esac
}
exitHandler() {
exitCode=$?
set +e
closeNest
if test -n "$showBuildStats"; then
times > "$NIX_BUILD_TOP/.times"
local -a times=($(cat "$NIX_BUILD_TOP/.times"))
# Print the following statistics:
# - user time for the shell
# - system time for the shell
# - user time for all child processes
# - system time for all child processes
echo "build time elapsed: " ${times[*]}
fi
if test $exitCode != 0; then
runHook failureHook
# If the builder had a non-zero exit code and
# $succeedOnFailure is set, create the file
# `$out/nix-support/failed' to signal failure, and exit
# normally. Otherwise, return the original exit code.
if test -n "$succeedOnFailure"; then
echo "build failed with exit code $exitCode (ignored)"
ensureDir "$out/nix-support"
echo -n $exitCode > "$out/nix-support/failed"
exit 0
fi
else
runHook exitHook
fi
exit $exitCode
}
trap "exitHandler" EXIT
######################################################################
# Helper functions that might be useful in setup hooks.
addToSearchPathWithCustomDelimiter() {
local delimiter=$1
local varName=$2
local dir=$3
if [ -d "$dir" ]; then
eval export ${varName}=${!varName}${!varName:+$delimiter}${dir}
fi
}
PATH_DELIMITER=':'
addToSearchPath() {
addToSearchPathWithCustomDelimiter "${PATH_DELIMITER}" "$@"
}
######################################################################
# Initialisation.
set -e
# Check that the directory pointed by HOME, usually '/homeless-shelter',
# does not exist, as it may be a good source for impurities.
! test -e $HOME
test -z $NIX_GCC && NIX_GCC=@gcc@
# Wildcard expansions that don't match should expand to an empty list.
# This ensures that, for instance, "for i in *; do ...; done" does the
# right thing.
shopt -s nullglob
# Set up the initial path.
PATH=
for i in $NIX_GCC @initialPath@; do
if test "$i" = /; then i=; fi
addToSearchPath PATH $i/bin
done
if test "$NIX_DEBUG" = "1"; then
echo "initial path: $PATH"
fi
# Execute the pre-hook.
export SHELL=@shell@
if test -z "$shell"; then
export shell=@shell@
fi
param1=@param1@
param2=@param2@
param3=@param3@
param4=@param4@
param5=@param5@
if test -n "@preHook@"; then source @preHook@; fi
runHook preHook
# Check that the pre-hook initialised SHELL.
if test -z "$SHELL"; then echo "SHELL not set"; exit 1; fi
# Hack: run gcc's setup hook.
envHooks=()
if test -f $NIX_GCC/nix-support/setup-hook; then
source $NIX_GCC/nix-support/setup-hook
fi
# Ensure that the given directories exists.
ensureDir() {
local dir
for dir in "$@"; do
if ! test -x "$dir"; then mkdir -p "$dir"; fi
done
}
installBin() {
ensureDir $out/bin
cp "$@" $out/bin
}
# Allow the caller to augment buildInputs (it's not always possible to
# do this before the call to setup.sh, since the PATH is empty at that
# point; here we have a basic Unix environment).
runHook addInputsHook
# Recursively find all build inputs.
findInputs() {
local pkg=$1
local var=$2
case ${!var} in
*\ $pkg\ *)
return 0
;;
esac
eval $var="'${!var} $pkg '"
if test -f $pkg/nix-support/setup-hook; then
source $pkg/nix-support/setup-hook
fi
if test -f $pkg/nix-support/propagated-build-inputs; then
for i in $(cat $pkg/nix-support/propagated-build-inputs); do
findInputs $i $var
done
fi
}
pkgs=""
for i in $buildInputs $propagatedBuildInputs; do
findInputs $i pkgs
done
hostPkgs=""
for i in $hostInputs $propagatedBuildInputs; do
findInputs $i hostPkgs
done
# Set the relevant environment variables to point to the build inputs
# found above.
envHostHooks=()
addToEnv() {
local pkg=$1
if test -d $1/bin; then
addToSearchPath _PATH $1/bin
fi
# Run the package-specific hooks set by the setup-hook scripts.
for i in "${envHooks[@]}"; do
$i $pkg
done
}
for i in $pkgs; do
addToEnv $i
done
addToEnvHost() {
local pkg=$1
# Run the package-specific hooks set by the setup-hook scripts.
for i in "${envHostHooks[@]}"; do
$i $pkg
done
}
for i in $hostPkgs; do
addToEnvHost $i
done
# Add the output as an rpath.
if test "$NIX_NO_SELF_RPATH" != "1"; then
export NIX_LDFLAGS="-rpath $out/lib $NIX_LDFLAGS"
if test -n "$NIX_LIB64_IN_SELF_RPATH"; then
export NIX_LDFLAGS="-rpath $out/lib64 $NIX_LDFLAGS"
fi
fi
# Strip debug information by default.
if test -z "$NIX_STRIP_DEBUG"; then
export NIX_STRIP_DEBUG=1
export NIX_CFLAGS_STRIP="-g0 -Wl,--strip-debug"
fi
# Set the TZ (timezone) environment variable, otherwise commands like
# `date' will complain (e.g., `Tue Mar 9 10:01:47 Local time zone must
# be set--see zic manual page 2004').
export TZ=UTC
# Set the prefix. This is generally $out, but it can be overriden,
# for instance if we just want to perform a test build/install to a
# temporary location and write a build report to $out.
if test -z "$prefix"; then
prefix="$out";
fi
if test "$useTempPrefix" = "1"; then
prefix="$NIX_BUILD_TOP/tmp_prefix";
fi
PATH=$_PATH${_PATH:+:}$PATH
if test "$NIX_DEBUG" = "1"; then
echo "final path: $PATH"
fi
# Make GNU Make produce nested output.
export NIX_INDENT_MAKE=1
######################################################################
# Misc. helper functions.
stripDirs() {
local dirs="$1"
local stripFlags="$2"
local dirsNew=
for d in ${dirs}; do
if test -d "$prefix/$d"; then
dirsNew="${dirsNew} $prefix/$d "
fi
done
dirs=${dirsNew}
if test -n "${dirs}"; then
header "stripping (with flags $stripFlags) in $dirs"
find $dirs -type f -print0 | xargs -0 ${xargsFlags:--r} strip $stripFlags || true
stopNest
fi
}
######################################################################
# Textual substitution functions.
substitute() {
local input="$1"
local output="$2"
local -a params=("$@")
local -a args=()
local n p pattern replacement varName
for ((n = 2; n < ${#params[*]}; n += 1)); do
p=${params[$n]}
if test "$p" = "--replace"; then
pattern="${params[$((n + 1))]}"
replacement="${params[$((n + 2))]}"
n=$((n + 2))
fi
if test "$p" = "--subst-var"; then
varName="${params[$((n + 1))]}"
pattern="@$varName@"
replacement="${!varName}"
n=$((n + 1))
fi
if test "$p" = "--subst-var-by"; then
pattern="@${params[$((n + 1))]}@"
replacement="${params[$((n + 2))]}"
n=$((n + 2))
fi
if test ${#args[@]} != 0; then
args[${#args[@]}]="-a"
fi
args[${#args[@]}]="$pattern"
args[${#args[@]}]="$replacement"
done
replace-literal -e -s -- "${args[@]}" < "$input" > "$output".tmp
if test -x "$output"; then
chmod +x "$output".tmp
fi
mv -f "$output".tmp "$output"
}
substituteInPlace() {
local fileName="$1"
shift
substitute "$fileName" "$fileName" "$@"
}
substituteAll() {
local input="$1"
local output="$2"
# Select all environment variables that start with a lowercase character.
for envVar in $(env | sed "s/^[^a-z].*//" | sed "s/^\([^=]*\)=.*/\1/"); do
if test "$NIX_DEBUG" = "1"; then
echo "$envVar -> ${!envVar}"
fi
args="$args --subst-var $envVar"
done
substitute "$input" "$output" $args
}
######################################################################
# What follows is the generic builder.
nestingLevel=0
startNest() {
nestingLevel=$(($nestingLevel + 1))
echo -en "\e[$1p"
}
stopNest() {
nestingLevel=$(($nestingLevel - 1))
echo -en "\e[q"
}
header() {
startNest "$2"
echo "$1"
}
# Make sure that even when we exit abnormally, the original nesting
# level is properly restored.
closeNest() {
while test $nestingLevel -gt 0; do
stopNest
done
}
# This function is useful for debugging broken Nix builds. It dumps
# all environment variables to a file `env-vars' in the build
# directory. If the build fails and the `-K' option is used, you can
# then go to the build directory and source in `env-vars' to reproduce
# the environment used for building.
dumpVars() {
if test "$noDumpEnvVars" != "1"; then
export > "$NIX_BUILD_TOP/env-vars"
fi
}
# Utility function: return the base name of the given path, with the
# prefix `HASH-' removed, if present.
stripHash() {
strippedName=$(basename $1);
if echo "$strippedName" | grep -q '^[a-z0-9]\{32\}-'; then
strippedName=$(echo "$strippedName" | cut -c34-)
fi
}
unpackFile() {
curSrc="$1"
local cmd
header "unpacking source archive $curSrc" 3
case "$curSrc" in
*.tar)
tar xvf $curSrc
;;
*.tar.gz | *.tgz | *.tar.Z)
gzip -d < $curSrc | tar xvf -
;;
*.tar.bz2 | *.tbz2)
bzip2 -d < $curSrc | tar xvf -
;;
*.zip)
unzip $curSrc
;;
*)
if test -d "$curSrc"; then
stripHash $curSrc
cp -prvd $curSrc $strippedName
else
if test -z "$unpackCmd"; then
echo "source archive $curSrc has unknown type"
exit 1
fi
runHook unpackCmd
fi
;;
esac
stopNest
}
unpackPhase() {
runHook preUnpack
if test -z "$srcs"; then
if test -z "$src"; then
echo 'variable $src or $srcs should point to the source'
exit 1
fi
srcs="$src"
fi
# To determine the source directory created by unpacking the
# source archives, we record the contents of the current
# directory, then look below which directory got added. Yeah,
# it's rather hacky.
local dirsBefore=""
for i in *; do
if test -d "$i"; then
dirsBefore="$dirsBefore $i "
fi
done
# Unpack all source archives.
for i in $srcs; do
unpackFile $i
done
# Find the source directory.
if test -n "$setSourceRoot"; then
runHook setSourceRoot
elif test -z "$sourceRoot"; then
sourceRoot=
for i in *; do
if test -d "$i"; then
case $dirsBefore in
*\ $i\ *)
;;
*)
if test -n "$sourceRoot"; then
echo "unpacker produced multiple directories"
exit 1
fi
sourceRoot="$i"
;;
esac
fi
done
fi
if test -z "$sourceRoot"; then
echo "unpacker appears to have produced no directories"
exit 1
fi
echo "source root is $sourceRoot"
# By default, add write permission to the sources. This is often
# necessary when sources have been copied from other store
# locations.
if test "$dontMakeSourcesWritable" != 1; then
chmod -R u+w "$sourceRoot"
fi
runHook postUnpack
}
patchPhase() {
runHook prePatch
if test -z "$patchPhase" -a -z "$patches"; then return; fi
for i in $patches; do
header "applying patch $i" 3
local uncompress=cat
case $i in
*.gz)
uncompress="gzip -d"
;;
*.bz2)
uncompress="bzip2 -d"
;;
esac
$uncompress < $i | patch ${patchFlags:--p1}
stopNest
done
runHook postPatch
}
fixLibtool() {
sed -i -e 's^eval sys_lib_.*search_path=.*^^' "$1"
}
configurePhase() {
runHook preConfigure
if test -z "$configureScript"; then
configureScript=./configure
if ! test -x $configureScript; then
echo "no configure script, doing nothing"
return
fi
fi
if test -z "$dontFixLibtool"; then
for i in $(find . -name "ltmain.sh"); do
echo "fixing libtool script $i"
fixLibtool $i
done
fi
if test -z "$dontAddPrefix"; then
configureFlags="${prefixKey:---prefix=}$prefix $configureFlags"
fi
# Add --disable-dependency-tracking to speed up some builds.
if test -z "$dontAddDisableDepTrack"; then
if grep -q dependency-tracking $configureScript; then
configureFlags="--disable-dependency-tracking $configureFlags"
fi
fi
# By default, disable static builds.
if test -z "$dontDisableStatic"; then
if grep -q enable-static $configureScript; then
configureFlags="--disable-static $configureFlags"
fi
fi
echo "configure flags: $configureFlags ${configureFlagsArray[@]}"
$configureScript $configureFlags "${configureFlagsArray[@]}"
runHook postConfigure
}
buildPhase() {
runHook preBuild
if test -z "$makeFlags" && ! test -n "$makefile" -o -e "Makefile" -o -e "makefile" -o -e "GNUmakefile"; then
echo "no Makefile, doing nothing"
return
fi
echo "make flags: $makeFlags ${makeFlagsArray[@]} $buildFlags ${buildFlagsArray[@]}"
make ${makefile:+-f $makefile} \
$makeFlags "${makeFlagsArray[@]}" \
$buildFlags "${buildFlagsArray[@]}"
runHook postBuild
}
checkPhase() {
runHook preCheck
echo "check flags: $makeFlags ${makeFlagsArray[@]} $checkFlags ${checkFlagsArray[@]}"
make ${makefile:+-f $makefile} \
$makeFlags "${makeFlagsArray[@]}" \
$checkFlags "${checkFlagsArray[@]}" ${checkTarget:-check}
runHook postCheck
}
patchELF() {
# Patch all ELF executables and shared libraries.
header "patching ELF executables and libraries"
if test -e "$prefix"; then
find "$prefix" \( \
\( -type f -a -name "*.so*" \) -o \
\( -type f -a -perm +0100 \) \
\) -print -exec patchelf --shrink-rpath {} \;
fi
stopNest
}
patchShebangs() {
# Rewrite all script interpreter file names (`#! /path') under the
# specified directory tree to paths found in $PATH. E.g.,
# /bin/sh will be rewritten to /nix/store/<hash>-some-bash/bin/sh.
# Interpreters that are already in the store are left untouched.
header "patching script interpreter paths"
local dir="$1"
local f
for f in $(find "$dir" -type f -perm +0100); do
local oldPath=$(sed -ne '1 s,^#![ ]*\([^ ]*\).*$,\1,p' "$f")
if test -n "$oldPath" -a "${oldPath:0:${#NIX_STORE}}" != "$NIX_STORE"; then
local newPath=$(type -P $(basename $oldPath) || true)
if test -n "$newPath" -a "$newPath" != "$oldPath"; then
echo "$f: interpreter changed from $oldPath to $newPath"
sed -i -e "1 s,$oldPath,$newPath," "$f"
fi
fi
done
stopNest
}
installPhase() {
runHook preInstall
ensureDir "$prefix"
installTargets=${installTargets:-install}
echo "install flags: $installTargets $makeFlags ${makeFlagsArray[@]} $installFlags ${installFlagsArray[@]}"
make ${makefile:+-f $makefile} $installTargets \
$makeFlags "${makeFlagsArray[@]}" \
$installFlags "${installFlagsArray[@]}"
runHook postInstall
}
# The fixup phase performs generic, package-independent, Nix-related
# stuff, like running patchelf and setting the
# propagated-build-inputs. It should rarely be overriden.
fixupPhase() {
runHook preFixup
# Put man/doc/info under $out/share.
forceShare=${forceShare:=man doc info}
if test -n "$forceShare"; then
for d in $forceShare; do
if test -d "$prefix/$d"; then
if test -d "$prefix/share/$d"; then
echo "both $d/ and share/$d/ exists!"
else
echo "fixing location of $d/ subdirectory"
ensureDir $prefix/share
if test -w $prefix/share; then
mv -v $prefix/$d $prefix/share
ln -sv share/$d $prefix
fi
fi
fi
done;
fi
# TODO: strip _only_ ELF executables, and return || fail here...
if test -z "$dontStrip"; then
stripDebugList=${stripDebugList:-lib lib64 libexec bin sbin}
if test -n "$stripDebugList"; then
stripDirs "$stripDebugList" "${stripDebugFlags:--S}"
fi
stripAllList=${stripAllList:-}
if test -n "$stripAllList"; then
stripDirs "$stripAllList" "${stripAllFlags:--s}"
fi
fi
if test "$havePatchELF" = 1 -a -z "$dontPatchELF"; then
patchELF "$prefix"
fi
if test -z "$dontPatchShebangs"; then
patchShebangs "$prefix"
fi
if test -n "$propagatedBuildInputs"; then
ensureDir "$out/nix-support"
echo "$propagatedBuildInputs" > "$out/nix-support/propagated-build-inputs"
fi
if test -n "$setupHook"; then
ensureDir "$out/nix-support"
substituteAll "$setupHook" "$out/nix-support/setup-hook"
fi
runHook postFixup
}
distPhase() {
runHook preDist
echo "dist flags: $distFlags ${distFlagsArray[@]}"
make ${makefile:+-f $makefile} $distFlags "${distFlagsArray[@]}" ${distTarget:-dist}
if test "$dontCopyDist" != 1; then
ensureDir "$out/tarballs"
# Note: don't quote $tarballs, since we explicitly permit
# wildcards in there.
cp -pvd ${tarballs:-*.tar.gz} $out/tarballs
fi
runHook postDist
}
showPhaseHeader() {
local phase="$1"
case $phase in
unpackPhase) header "unpacking sources";;
patchPhase) header "patching sources";;
configurePhase) header "configuring";;
buildPhase) header "building";;
checkPhase) header "running tests";;
installPhase) header "installing";;
fixupPhase) header "post-installation fixup";;
*) header "$phase";;
esac
}
genericBuild() {
header "building $out"
if test -n "$buildCommand"; then
eval "$buildCommand"
return
fi
if test -z "$phases"; then
phases="$prePhases unpackPhase patchPhase $preConfigurePhases \
configurePhase $preBuildPhases buildPhase checkPhase \
$preInstallPhases installPhase fixupPhase \
$preDistPhases distPhase $postPhases";
fi
for curPhase in $phases; do
if test "$curPhase" = buildPhase -a -n "$dontBuild"; then continue; fi
if test "$curPhase" = checkPhase -a -z "$doCheck"; then continue; fi
if test "$curPhase" = installPhase -a -n "$dontInstall"; then continue; fi
if test "$curPhase" = fixupPhase -a -n "$dontFixup"; then continue; fi
if test "$curPhase" = distPhase -a -z "$doDist"; then continue; fi
showPhaseHeader "$curPhase"
dumpVars
# Evaluate the variable named $curPhase if it exists, otherwise the
# function named $curPhase.
eval "${!curPhase:-$curPhase}"
if test "$curPhase" = unpackPhase; then
cd "${sourceRoot:-.}"
fi
stopNest
done
stopNest
}
# Execute the post-hook.
if test -n "@postHook@"; then source @postHook@; fi
runHook postHook
dumpVars