646 lines
13 KiB
Bash
Executable file
646 lines
13 KiB
Bash
Executable file
set -e
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test -z $NIX_GCC && NIX_GCC=@GCC@
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# Set up the initial path.
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PATH=
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for i in $NIX_GCC @INITIALPATH@; do
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PATH=$PATH${PATH:+:}$i/bin
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done
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if test "$NIX_DEBUG" = "1"; then
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echo "Initial path: $PATH"
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fi
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# Execute the pre-hook.
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export SHELL=@SHELL@
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# Check that the pre-hook initialised SHELL.
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if test -z "$SHELL"; then echo "SHELL not set"; exit 1; fi
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# Hack: run gcc's setup hook.
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envHooks=()
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if test -f $NIX_GCC/nix-support/setup-hook; then
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source $NIX_GCC/nix-support/setup-hook
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fi
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# Ensure that the given directory exists.
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ensureDir() {
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local dir=$1
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if ! test -x "$dir"; then mkdir -p "$dir"; fi
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}
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# Called when some build action fails. If $succeedOnFailure is set,
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# create the file `$out/nix-support/failed' to signal failure, and
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# exit normally. Otherwise, exit with failure.
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fail() {
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exitCode=$?
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if test "$succeedOnFailure" = 1; then
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ensureDir "$out/nix-support"
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touch "$out/nix-support/failed"
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exit 0
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else
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exit $?
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fi
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}
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# Allow the caller to augment buildInputs (it's not always possible to
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# do this before the call to setup.sh, since the PATH is empty at that
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# point; here we have a basic Unix environment).
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if test -n "$addInputsHook"; then
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$addInputsHook
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fi
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# Recursively find all build inputs.
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findInputs()
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{
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local pkg=$1
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case $pkgs in
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*\ $pkg\ *)
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return 0
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;;
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esac
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pkgs="$pkgs $pkg "
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if test -f $pkg/nix-support/setup-hook; then
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source $pkg/nix-support/setup-hook
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fi
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if test -f $pkg/nix-support/propagated-build-inputs; then
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for i in $(cat $pkg/nix-support/propagated-build-inputs); do
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findInputs $i
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done
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fi
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}
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pkgs=""
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if test -n "$buildinputs"; then
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buildInputs="$buildinputs" # compatibility
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fi
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for i in $buildInputs $propagatedBuildInputs; do
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findInputs $i
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done
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# Set the relevant environment variables to point to the build inputs
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# found above.
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addToEnv()
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{
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local pkg=$1
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if test "$ignoreFailedInputs" != "1" -a -e $1/nix-support/failed; then
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echo "failed input $1" >&2
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fail
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fi
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if test -d $1/bin; then
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export _PATH=$_PATH${_PATH:+:}$1/bin
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fi
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for i in "${envHooks[@]}"; do
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$i $pkg
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done
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}
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for i in $pkgs; do
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addToEnv $i
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done
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# Add the output as an rpath.
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if test "$NIX_NO_SELF_RPATH" != "1"; then
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export NIX_LDFLAGS="-rpath $out/lib $NIX_LDFLAGS"
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fi
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# Strip debug information by default.
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if test -z "$NIX_STRIP_DEBUG"; then
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export NIX_STRIP_DEBUG=1
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export NIX_CFLAGS_STRIP="-g0 -Wl,--strip-debug"
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fi
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# Do we know where the store is? This is required for purity checking.
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if test -z "$NIX_STORE"; then
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echo "Error: you have an old version of Nix that does not set the" \
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"NIX_STORE variable. Please upgrade." >&2
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exit 1
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fi
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# We also need to know the root of the build directory for purity checking.
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if test -z "$NIX_BUILD_TOP"; then
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echo "Error: you have an old version of Nix that does not set the" \
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"NIX_BUILD_TOP variable. Please upgrade." >&2
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exit 1
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fi
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# Set the TZ (timezone) environment variable, otherwise commands like
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# `date' will complain (e.g., `Tue Mar 9 10:01:47 Local time zone must
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# be set--see zic manual page 2004').
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export TZ=UTC
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PATH=$_PATH${_PATH:+:}$PATH
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if test "$NIX_DEBUG" = "1"; then
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echo "Final path: $PATH"
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fi
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######################################################################
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# What follows is the generic builder.
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nestingLevel=0
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startNest() {
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nestingLevel=$(($nestingLevel + 1))
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echo -en "\e[$1p"
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}
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stopNest() {
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nestingLevel=$(($nestingLevel - 1))
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echo -en "\e[q"
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}
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header() {
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startNest "$2"
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echo "$1"
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}
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# Make sure that even when we exit abnormally, the original nesting
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# level is properly restored.
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closeNest() {
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while test $nestingLevel -gt 0; do
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stopNest
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done
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}
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trap "closeNest" EXIT
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# This function is useful for debugging broken Nix builds. It dumps
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# all environment variables to a file `env-vars' in the build
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# directory. If the build fails and the `-K' option is used, you can
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# then go to the build directory and source in `env-vars' to reproduce
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# the environment used for building.
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dumpVars() {
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if test "$noDumpEnvVars" != "1"; then
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export > $NIX_BUILD_TOP/env-vars
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fi
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}
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# Redirect stdout/stderr to a named pipe connected to a `tee' process
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# that writes the specified file (and also to our original stdout).
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# The original stdout is saved in descriptor 3.
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startLog() {
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local logFile=${logNr}_$1
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logNr=$((logNr + 1))
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if test "$logPhases" = 1; then
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ensureDir $logDir
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exec 3>&1
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if test "$dontLogThroughTee" != 1; then
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# This required named pipes (fifos).
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logFifo=$NIX_BUILD_TOP/log_fifo
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test -p $logFifo || mkfifo $logFifo
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startLogWrite "$logDir/$logFile" "$logFifo"
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exec > $logFifo 2>&1
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else
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exec > $logDir/$logFile 2>&1
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fi
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fi
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}
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# Factored into a separate function so that it can be overriden.
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startLogWrite() {
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tee "$1" < "$2" &
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logWriterPid=$!
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}
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if test -z "$logDir"; then
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logDir=$out/log
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fi
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logNr=0
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# Restore the original stdout/stderr.
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stopLog() {
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if test "$logPhases" = 1; then
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exec >&3 2>&1
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# Wait until the tee process has died. Otherwise output from
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# different phases may be mixed up.
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if test -n "$logWriterPid"; then
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wait $logWriterPid
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logWriterPid=
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rm $logFifo
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fi
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fi
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}
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# Utility function: return the base name of the given path, with the
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# prefix `HASH-' removed, if present.
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stripHash() {
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strippedName=$(basename $1);
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if echo "$strippedName" | grep -q '^[a-z0-9]\{32\}-'; then
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strippedName=$(echo "$strippedName" | cut -c34-)
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fi
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}
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unpackFile() {
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local file=$1
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local cmd
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case $file in
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*.tar) cmd="tar xvf $file";;
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*.tar.gz | *.tgz | *.tar.Z) cmd="tar xvfz $file";;
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*.tar.bz2 | *.tbz2) cmd="tar xvfj $file";;
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*.zip) cmd="unzip $file";;
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*)
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if test -d "$file"; then
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stripHash $file
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cmd="cp -prvd $file $strippedName"
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else
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if test -n "$findUnpacker"; then
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$findUnpacker $1;
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fi
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if test -z "$unpackCmd"; then
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echo "source archive $file has unknown type"
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exit 1
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fi
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cmd=$unpackCmd
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fi
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;;
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esac
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header "unpacking source archive $file (using $cmd)" 3
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$cmd || fail
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stopNest
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}
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unpackW() {
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if test -n "$unpackPhase"; then
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$unpackPhase
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return
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fi
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if test -z "$srcs"; then
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if test -z "$src"; then
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echo 'variable $src or $srcs should point to the source'
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exit 1
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fi
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srcs="$src"
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fi
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# To determine the source directory created by unpacking the
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# source archives, we record the contents of the current
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# directory, then look below which directory got added. Yeah,
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# it's rather hacky.
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local dirsBefore=""
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for i in *; do
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if test -d "$i"; then
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dirsBefore="$dirsBefore $i "
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fi
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done
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# Unpack all source archives.
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for i in $srcs; do
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unpackFile $i
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done
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# Find the source directory.
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if test -n "$setSourceRoot"; then
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$setSourceRoot
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else
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sourceRoot=
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for i in *; do
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if test -d "$i"; then
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case $dirsBefore in
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*\ $i\ *)
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;;
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*)
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if test -n "$sourceRoot"; then
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echo "unpacker produced multiple directories"
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exit 1
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fi
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sourceRoot=$i
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;;
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esac
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fi
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done
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fi
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if test -z "$sourceRoot"; then
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echo "unpacker appears to have produced no directories"
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exit 1
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fi
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echo "source root is $sourceRoot"
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# By default, add write permission to the sources. This is often
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# necessary when sources have been copied from other store
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# locations.
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if test "dontMakeSourcesWritable" != 1; then
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chmod -R +w $sourceRoot
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fi
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if test -n "$postUnpack"; then
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$postUnpack
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fi
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}
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unpackPhase() {
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header "unpacking sources"
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startLog "unpack"
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unpackW
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stopLog
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stopNest
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}
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patchW() {
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if test -n "$patchPhase"; then
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$patchPhase
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return
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fi
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for i in $patches; do
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header "applying patch $i" 3
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patch -p1 < $i || fail
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stopNest
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done
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}
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patchPhase() {
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if test -z "$patchPhase" -a -z "$patches"; then return; fi
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header "patching sources"
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startLog "patch"
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patchW
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stopLog
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stopNest
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}
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fixLibtool() {
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sed 's^eval sys_lib_.*search_path=.*^^' < $1 > $1.tmp
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mv $1.tmp $1
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}
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configureW() {
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if test -n "$configurePhase"; then
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$configurePhase
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return
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fi
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if test -n "$preConfigure"; then
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$preConfigure
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fi
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if test -z "$prefix"; then
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prefix="$out";
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fi
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if test "$useTempPrefix" = "1"; then
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prefix="$NIX_BUILD_TOP/tmp_prefix";
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fi
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if test -z "$configureScript"; then
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configureScript=./configure
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if ! test -x $configureScript; then
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echo "no configure script, doing nothing"
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return
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fi
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fi
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if test -z "$dontFixLibtool"; then
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for i in $(find . -name "ltmain.sh"); do
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echo "fixing libtool script $i"
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fixLibtool $i
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done
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fi
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if test -z "$dontAddPrefix"; then
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configureFlags="--prefix=$prefix $configureFlags"
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fi
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echo "configure flags: $configureFlags"
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$configureScript $configureFlags || fail
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if test -n "$postConfigure"; then
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$postConfigure
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fi
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}
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configurePhase() {
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header "configuring"
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startLog "configure"
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configureW
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stopLog
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stopNest
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}
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buildW() {
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if test -n "$buildPhase"; then
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$buildPhase
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return
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fi
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if test -n "$preBuild"; then
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$preBuild
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fi
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echo "make flags: $makeFlags"
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make $makeFlags || fail
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if test -n "$postBuild"; then
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$postBuild
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fi
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}
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buildPhase() {
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if test "$dontBuild" = 1; then
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return
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fi
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header "building"
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startLog "build"
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buildW
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stopLog
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stopNest
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}
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checkW() {
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if test -n "$checkPhase"; then
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$checkPhase
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return
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fi
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if test -z "$checkTarget"; then
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checkTarget="check"
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fi
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echo "check flags: $checkFlags"
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make $checkFlags $checkTarget || fail
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}
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checkPhase() {
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if test "$doCheck" != 1; then
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return
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fi
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header "checking"
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startLog "check"
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checkW
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stopLog
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stopNest
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}
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patchELF() {
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# Patch all ELF executables and shared libraries.
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header "patching ELF executables and libraries"
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find "$prefix" \( \
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\( -type f -a -name "*.so*" \) -o \
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\( -type f -a -perm +0100 \) \
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\) -print -exec patchelf --shrink-rpath {} \;
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stopNest
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}
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installW() {
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if test -n "$installPhase"; then
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$installPhase
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return
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fi
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if test -n "$preInstall"; then
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$preInstall
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fi
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ensureDir "$prefix"
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if test -z "$dontMakeInstall"; then
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echo "install flags: $installFlags"
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make install $installFlags || fail
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fi
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if test -z "$dontStrip" -a "$NIX_STRIP_DEBUG" = 1; then
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find "$prefix" -name "*.a" -exec echo stripping {} \; \
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-exec strip -S {} \; || fail
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fi
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if test "$havePatchELF" = 1 -a -z "$dontPatchELF"; then
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patchELF "$prefix"
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fi
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if test -n "$propagatedBuildInputs"; then
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ensureDir "$out/nix-support"
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echo "$propagatedBuildInputs" > "$out/nix-support/propagated-build-inputs"
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fi
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if test -n "$postInstall"; then
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$postInstall
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fi
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}
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installPhase() {
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if test "$dontInstall" = 1; then
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return
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fi
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header "installing"
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startLog "install"
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installW
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stopLog
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stopNest
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}
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distW() {
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if test -n "$distPhase"; then
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$distPhase
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return
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fi
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if test -n "$preDist"; then
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$preDist
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fi
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if test -z "$distTarget"; then
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distTarget="dist"
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fi
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echo "dist flags: $distFlags"
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make $distFlags $distTarget || fail
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if test "$dontCopyDist" != 1; then
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ensureDir "$out/tarballs"
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if test -z "$tarballs"; then
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tarballs="*.tar.gz"
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fi
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# Note: don't quote $tarballs, since we explicitly permit
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# wildcards in there.
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cp -pvd $tarballs $out/tarballs
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fi
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if test -n "$postDist"; then
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$postDist
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fi
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}
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distPhase() {
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if test "$doDist" != 1; then
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return
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fi
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header "creating distribution"
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startLog "dist"
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distW
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stopLog
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stopNest
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}
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genericBuild() {
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header "building $out"
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unpackPhase
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cd $sourceRoot
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if test -z "$phases"; then
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phases="patchPhase configurePhase buildPhase checkPhase \
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installPhase distPhase";
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fi
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for i in $phases; do
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dumpVars
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$i
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done
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stopNest
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}
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dumpVars
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