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|
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 $exitCode != 0; then
eval "$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
eval "$exitHook"
fi
exit $exitCode
}
trap "exitHandler" EXIT
######################################################################
# Helper functions that might be useful in setup hooks.
addToSearchPathWithCustomDelimiter() {
local delimiter=$1
local varName=$2
local needDir=$3
local addDir=${4:-$needDir}
local prefix=$5
if [ -d $prefix$needDir ]; then
if [ -z ${!varName} ]; then
eval export ${varName}=${prefix}$addDir
else
eval export ${varName}=${!varName}${delimiter}${prefix}$addDir
fi
fi
}
addToSearchPath() {
addToSearchPathWithCustomDelimiter "${PATH_DELIMITER}" "$@"
}
######################################################################
# Initialisation.
set -e
test -z $NIX_GCC && NIX_GCC=@gcc@
# Set up the initial path.
PATH=
for i in $NIX_GCC @initialPath@; do
if test "$i" = /; then i=; fi
PATH=$PATH${PATH:+:}$i/bin
done
if test "$NIX_DEBUG" = "1"; then
echo "initial path: $PATH"
fi
# Execute the pre-hook.
export SHELL=@shell@
PATH_DELIMITER=':'
if test -z "$shell"; then
export shell=@shell@
fi
param1=@param1@
param2=@param2@
param3=@param3@
param4=@param4@
param5=@param5@
if test -n "@preHook@"; then source @preHook@; fi
eval "$preHook"
# Check that the pre-hook initialised SHELL.
if test -z "$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 $out/bin
cp "$@" $out/bin
}
assertEnvExists(){
if test -z "${!1}"; then
msg=${2:-error: assertion failed: env var $1 is required}
echo $msg >&2; exit 1
fi
}
# Allow the caller to augment buildInputs (it's not always possible to
# do this before the call to setup.sh, since the PATH is empty at that
# point; here we have a basic Unix environment).
eval "$addInputsHook"
# Recursively find all build inputs.
findInputs() {
local pkg=$1
case $pkgs in
*\ $pkg\ *)
return 0
;;
esac
pkgs="$pkgs $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 $i
done
fi
}
pkgs=""
if test -n "$buildinputs"; then
buildInputs="$buildinputs" # compatibility
fi
for i in $buildInputs $propagatedBuildInputs; do
findInputs $i
done
# Set the relevant environment variables to point to the build inputs
# found above.
addToEnv() {
local pkg=$1
if test "$ignoreFailedInputs" != "1" -a -e $1/nix-support/failed; then
echo "failed input $1" >&2
exit 1
fi
if test -d $1/bin; then
export _PATH=$_PATH${_PATH:+:}$1/bin
fi
for i in "${envHooks[@]}"; do
$i $pkg
done
}
for i in $pkgs; do
addToEnv $i
done
# Add the output as an rpath.
if test "$NIX_NO_SELF_RPATH" != "1"; then
export NIX_LDFLAGS="-rpath $out/lib $NIX_LDFLAGS"
fi
# Strip debug information by default.
if test -z "$NIX_STRIP_DEBUG"; then
export NIX_STRIP_DEBUG=1
export NIX_CFLAGS_STRIP="-g0 -Wl,--strip-debug"
fi
assertEnvExists NIX_STORE \
"Error: you have an old version of Nix that does not set the
NIX_STORE variable. This is required for purity checking.
Please upgrade."
assertEnvExists NIX_BUILD_TOP \
"Error: you have an old version of Nix that does not set the
NIX_BUILD_TOP variable. This is required for purity checking.
Please upgrade."
# 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
######################################################################
# 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 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 > $NIX_BUILD_TOP/env-vars
fi
}
# Redirect stdout/stderr to a named pipe connected to a `tee' process
# that writes the specified file (and also to our original stdout).
# The original stdout is saved in descriptor 3.
startLog() {
local logFile=${logNr}_$1
logNr=$((logNr + 1))
if test "$logPhases" = 1; then
ensureDir $logDir
exec 3>&1
if test "$dontLogThroughTee" != 1; then
# This required named pipes (fifos).
logFifo=$NIX_BUILD_TOP/log_fifo
test -p $logFifo || mkfifo $logFifo
startLogWrite "$logDir/$logFile" "$logFifo"
exec > $logFifo 2>&1
else
exec > $logDir/$logFile 2>&1
fi
fi
}
# Factored into a separate function so that it can be overriden.
startLogWrite() {
tee "$1" < "$2" &
logWriterPid=$!
}
if test -z "$logDir"; then
logDir=$out/log
fi
logNr=0
# Restore the original stdout/stderr.
stopLog() {
if test "$logPhases" = 1; then
exec >&3 2>&1
# Wait until the tee process has died. Otherwise output from
# different phases may be mixed up.
if test -n "$logWriterPid"; then
wait $logWriterPid
logWriterPid=
rm $logFifo
fi
fi
}
# Utility function: return the base name of the given path, with the
# prefix `HASH-' removed, if present.
stripHash() {
strippedName=$(basename $1);
if echo "$strippedName" | grep -q '^[a-z0-9]\{32\}-'; then
strippedName=$(echo "$strippedName" | cut -c34-)
fi
}
unpackFile() {
local file="$1"
local cmd
header "unpacking source archive $file" 3
case "$file" in
*.tar)
tar xvf $file
;;
*.tar.gz | *.tgz | *.tar.Z)
gzip -d < $file | tar xvf -
;;
*.tar.bz2 | *.tbz2)
bzip2 -d < $file | tar xvf -
;;
*.zip)
unzip $file
;;
*)
if test -d "$file"; then
stripHash $file
cp -prvd $file $strippedName
else
if test -n "$findUnpacker"; then
$findUnpacker $1;
fi
if test -z "$unpackCmd"; then
echo "source archive $file has unknown type"
exit 1
fi
eval "$unpackCmd"
fi
;;
esac
stopNest
}
unpackPhase() {
eval "$preUnpack"
if test -z "$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
eval "$setSourceRoot"
else
sourceRoot=
for i in *; do
if test -d "$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 +w $sourceRoot
fi
eval "$postUnpack"
}
patchPhase() {
eval "$prePatch"
if test -z "$patchPhase" -a -z "$patches"; then return; fi
if test -z "$patchFlags"; then
patchFlags="-p1"
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 $patchFlags
stopNest
done
eval "$postPatch"
}
fixLibtool() {
sed -i -e 's^eval sys_lib_.*search_path=.*^^' "$1"
}
configurePhase() {
eval "$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
echo "configure flags: $configureFlags ${configureFlagsArray[@]}"
$configureScript $configureFlags"${configureFlagsArray[@]}"
eval "$postConfigure"
}
buildPhase() {
eval "$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[@]}"
eval "$postBuild"
}
checkPhase() {
eval "$preCheck"
if test -z "$checkTarget"; then
checkTarget="check"
fi
echo "check flags: $makeFlags ${makeFlagsArray[@]} $checkFlags ${checkFlagsArray[@]}"
make ${makefile:+-f $makefile} \
$makeFlags "${makeFlagsArray[@]}" \
$checkFlags "${checkFlagsArray[@]}" $checkTarget
eval "$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() {
eval "$preInstall"
ensureDir "$prefix"
if test -z "$installCommand"; then
if test -z "$installTargets"; then
installTargets=install
fi
echo "install flags: $installTargets $makeFlags ${makeFlagsArray[@]} $installFlags ${installFlagsArray[@]}"
make ${makefile:+-f $makefile} $installTargets \
$makeFlags "${makeFlagsArray[@]}" \
$installFlags "${installFlagsArray[@]}"
else
eval "$installCommand"
fi
eval "$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() {
eval "$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=${stripDebugList:-lib bin sbin}
if test -n "$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" "$out/nix-support/setup-hook"
fi
eval "$postFixup"
}
distPhase() {
eval "$preDist"
if test -z "$distTarget"; then
distTarget="dist"
fi
echo "dist flags: $distFlags ${distFlagsArray[@]}"
make ${makefile:+-f $makefile} $distFlags "${distFlagsArray[@]}" $distTarget
if test "$dontCopyDist" != 1; then
ensureDir "$out/tarballs"
if test -z "$tarballs"; then
tarballs="*.tar.gz"
fi
# Note: don't quote $tarballs, since we explicitly permit
# wildcards in there.
cp -pvd $tarballs $out/tarballs
fi
eval "$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"
startLog "$curPhase"
dumpVars
# Evaluate the variable named $curPhase if it exists, otherwise the
# function named $curPhase.
eval "${!curPhase:-$curPhase}"
if test "$curPhase" = unpackPhase; then
cd "${sourceRoot:-.}"
fi
stopLog
stopNest
done
stopNest
}
# Execute the post-hook.
if test -n "@postHook@"; then source @postHook@; fi
eval "$postHook"
dumpVars
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