mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-23 14:11:36 +00:00
850 lines
21 KiB
Bash
850 lines
21 KiB
Bash
set -e
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set -o pipefail
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: ${outputs:=out}
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######################################################################
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# Hook handling.
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# Run all hooks with the specified name in the order in which they
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# were added, stopping if any fails (returns a non-zero exit
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# code). The hooks for <hookName> are the shell function or variable
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# <hookName>, and the values of the shell array ‘<hookName>Hooks’.
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runHook() {
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local hookName="$1"
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shift
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local var="$hookName"
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if [[ "$hookName" =~ Hook$ ]]; then var+=s; else var+=Hooks; fi
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eval "local -a dummy=(\"\${$var[@]}\")"
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for hook in "_callImplicitHook 0 $hookName" "${dummy[@]}"; do
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_eval "$hook" "$@"
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done
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return 0
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}
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# Run all hooks with the specified name, until one succeeds (returns a
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# zero exit code). If none succeed, return a non-zero exit code.
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runOneHook() {
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local hookName="$1"
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shift
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local var="$hookName"
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if [[ "$hookName" =~ Hook$ ]]; then var+=s; else var+=Hooks; fi
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eval "local -a dummy=(\"\${$var[@]}\")"
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for hook in "_callImplicitHook 1 $hookName" "${dummy[@]}"; do
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if _eval "$hook" "$@"; then
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return 0
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fi
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done
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return 1
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}
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# Run the named hook, either by calling the function with that name or
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# by evaluating the variable with that name. This allows convenient
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# setting of hooks both from Nix expressions (as attributes /
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# environment variables) and from shell scripts (as functions). If you
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# want to allow multiple hooks, use runHook instead.
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_callImplicitHook() {
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local def="$1"
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local hookName="$2"
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case "$(type -t $hookName)" in
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(function|alias|builtin) $hookName;;
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(file) source $hookName;;
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(keyword) :;;
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(*) if [ -z "${!hookName}" ]; then return "$def"; else eval "${!hookName}"; fi;;
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esac
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}
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# A function wrapper around ‘eval’ that ensures that ‘return’ inside
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# hooks exits the hook, not the caller.
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_eval() {
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local code="$1"
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shift
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if [ "$(type -t $code)" = function ]; then
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eval "$code \"\$@\""
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else
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eval "$code"
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fi
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}
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######################################################################
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# Logging.
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nestingLevel=0
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startNest() {
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nestingLevel=$(($nestingLevel + 1))
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echo -en "\033[$1p"
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}
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stopNest() {
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nestingLevel=$(($nestingLevel - 1))
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echo -en "\033[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 [ $nestingLevel -gt 0 ]; do
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stopNest
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done
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}
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######################################################################
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# Error handling.
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exitHandler() {
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exitCode=$?
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set +e
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closeNest
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if [ -n "$showBuildStats" ]; then
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times > "$NIX_BUILD_TOP/.times"
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local -a times=($(cat "$NIX_BUILD_TOP/.times"))
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# Print the following statistics:
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# - user time for the shell
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# - system time for the shell
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# - user time for all child processes
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# - system time for all child processes
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echo "build time elapsed: " ${times[*]}
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fi
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if [ $exitCode != 0 ]; then
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runHook failureHook
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# If the builder had a non-zero exit code and
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# $succeedOnFailure is set, create the file
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# ‘$out/nix-support/failed’ to signal failure, and exit
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# normally. Otherwise, return the original exit code.
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if [ -n "$succeedOnFailure" ]; then
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echo "build failed with exit code $exitCode (ignored)"
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mkdir -p "$out/nix-support"
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printf "%s" $exitCode > "$out/nix-support/failed"
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exit 0
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fi
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else
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runHook exitHook
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fi
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exit $exitCode
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}
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trap "exitHandler" EXIT
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######################################################################
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# Helper functions.
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addToSearchPathWithCustomDelimiter() {
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local delimiter=$1
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local varName=$2
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local dir=$3
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if [ -d "$dir" ]; then
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eval export ${varName}=${!varName}${!varName:+$delimiter}${dir}
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fi
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}
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PATH_DELIMITER=':'
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addToSearchPath() {
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addToSearchPathWithCustomDelimiter "${PATH_DELIMITER}" "$@"
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}
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ensureDir() {
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echo "warning: ‘ensureDir’ is deprecated; use ‘mkdir’ instead" >&2
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local dir
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for dir in "$@"; do
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if ! [ -x "$dir" ]; then mkdir -p "$dir"; fi
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done
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}
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installBin() {
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mkdir -p $out/bin
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cp "$@" $out/bin
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}
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######################################################################
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# Initialisation.
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# Wildcard expansions that don't match should expand to an empty list.
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# This ensures that, for instance, "for i in *; do ...; done" does the
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# right thing.
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shopt -s nullglob
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# Set up the initial path.
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PATH=
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for i in $initialPath; do
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if [ "$i" = / ]; then i=; fi
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addToSearchPath PATH $i/bin
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addToSearchPath PATH $i/sbin
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done
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if [ "$NIX_DEBUG" = 1 ]; then
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echo "initial path: $PATH"
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fi
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# Check that the pre-hook initialised SHELL.
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if [ -z "$SHELL" ]; then echo "SHELL not set"; exit 1; fi
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BASH="$SHELL"
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export CONFIG_SHELL="$SHELL"
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# Execute the pre-hook.
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if [ -z "$shell" ]; then export shell=$SHELL; fi
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runHook preHook
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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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runHook addInputsHook
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# Recursively find all build inputs.
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findInputs() {
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local pkg="$1"
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local var=$2
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local propagatedBuildInputsFile=$3
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case ${!var} 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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eval $var="'${!var} $pkg '"
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if ! [ -e "$pkg" ]; then
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echo "build input $pkg does not exist" >&2
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exit 1
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fi
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if [ -f "$pkg" ]; then
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source "$pkg"
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fi
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if [ -f "$pkg/nix-support/setup-hook" ]; then
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source "$pkg/nix-support/setup-hook"
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fi
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if [ -f "$pkg/nix-support/$propagatedBuildInputsFile" ]; then
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for i in $(cat "$pkg/nix-support/$propagatedBuildInputsFile"); do
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findInputs "$i" $var $propagatedBuildInputsFile
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done
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fi
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}
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crossPkgs=""
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for i in $buildInputs $defaultBuildInputs $propagatedBuildInputs; do
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findInputs $i crossPkgs propagated-build-inputs
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done
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nativePkgs=""
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for i in $nativeBuildInputs $defaultNativeBuildInputs $propagatedNativeBuildInputs; do
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findInputs $i nativePkgs propagated-native-build-inputs
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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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_addToNativeEnv() {
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local pkg=$1
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if [ -d $1/bin ]; then
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addToSearchPath _PATH $1/bin
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fi
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# Run the package-specific hooks set by the setup-hook scripts.
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runHook envHook "$pkg"
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}
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for i in $nativePkgs; do
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_addToNativeEnv $i
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done
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_addToCrossEnv() {
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local pkg=$1
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# Some programs put important build scripts (freetype-config and similar)
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# into their crossDrv bin path. Intentionally these should go after
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# the nativePkgs in PATH.
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if [ -d $1/bin ]; then
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addToSearchPath _PATH $1/bin
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fi
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# Run the package-specific hooks set by the setup-hook scripts.
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runHook crossEnvHook "$pkg"
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}
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for i in $crossPkgs; do
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_addToCrossEnv $i
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done
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# Add the output as an rpath.
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if [ "$NIX_NO_SELF_RPATH" != 1 ]; then
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export NIX_LDFLAGS="-rpath $out/lib $NIX_LDFLAGS"
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if [ -n "$NIX_LIB64_IN_SELF_RPATH" ]; then
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export NIX_LDFLAGS="-rpath $out/lib64 $NIX_LDFLAGS"
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fi
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if [ -n "$NIX_LIB32_IN_SELF_RPATH" ]; then
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export NIX_LDFLAGS="-rpath $out/lib32 $NIX_LDFLAGS"
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fi
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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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# Set the prefix. This is generally $out, but it can be overriden,
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# for instance if we just want to perform a test build/install to a
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# temporary location and write a build report to $out.
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if [ -z "$prefix" ]; then
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prefix="$out";
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fi
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if [ "$useTempPrefix" = 1 ]; then
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prefix="$NIX_BUILD_TOP/tmp_prefix";
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fi
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PATH=$_PATH${_PATH:+:}$PATH
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if [ "$NIX_DEBUG" = 1 ]; then
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echo "final path: $PATH"
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fi
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# Make GNU Make produce nested output.
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export NIX_INDENT_MAKE=1
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# Normalize the NIX_BUILD_CORES variable. The value might be 0, which
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# means that we're supposed to try and auto-detect the number of
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# available CPU cores at run-time.
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if [ -z "${NIX_BUILD_CORES:-}" ]; then
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NIX_BUILD_CORES="1"
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elif [ "$NIX_BUILD_CORES" -le 0 ]; then
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NIX_BUILD_CORES=$(nproc 2>/dev/null || true)
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if expr >/dev/null 2>&1 "$NIX_BUILD_CORES" : "^[0-9][0-9]*$"; then
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:
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else
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NIX_BUILD_CORES="1"
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fi
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fi
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export NIX_BUILD_CORES
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# Dummy implementation of the paxmark function. On Linux, this is
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# overwritten by paxctl's setup hook.
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paxmark() { true; }
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######################################################################
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# Textual substitution functions.
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substitute() {
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local input="$1"
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local output="$2"
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local -a params=("$@")
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local n p pattern replacement varName content
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# a slightly hacky way to keep newline at the end
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content="$(cat "$input"; printf "%s" X)"
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content="${content%X}"
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for ((n = 2; n < ${#params[*]}; n += 1)); do
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p=${params[$n]}
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if [ "$p" = --replace ]; then
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pattern="${params[$((n + 1))]}"
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replacement="${params[$((n + 2))]}"
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n=$((n + 2))
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fi
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if [ "$p" = --subst-var ]; then
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varName="${params[$((n + 1))]}"
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pattern="@$varName@"
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replacement="${!varName}"
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n=$((n + 1))
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fi
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if [ "$p" = --subst-var-by ]; then
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pattern="@${params[$((n + 1))]}@"
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replacement="${params[$((n + 2))]}"
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n=$((n + 2))
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fi
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content="${content//"$pattern"/$replacement}"
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done
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if [ -e "$output" ]; then chmod +w "$output"; fi
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printf "%s" "$content" > "$output"
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}
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substituteInPlace() {
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local fileName="$1"
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shift
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substitute "$fileName" "$fileName" "$@"
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}
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substituteAll() {
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local input="$1"
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local output="$2"
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# Select all environment variables that start with a lowercase character.
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for envVar in $(env | sed -e $'s/^\([a-z][^=]*\)=.*/\\1/; t \n d'); do
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if [ "$NIX_DEBUG" = "1" ]; then
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echo "$envVar -> ${!envVar}"
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fi
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args="$args --subst-var $envVar"
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done
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substitute "$input" "$output" $args
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}
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substituteAllInPlace() {
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local fileName="$1"
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shift
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substituteAll "$fileName" "$fileName" "$@"
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}
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######################################################################
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# What follows is the generic builder.
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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 [ "$noDumpEnvVars" != 1 ]; then
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export > "$NIX_BUILD_TOP/env-vars" || true
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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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unpackCmdHooks+=(_defaultUnpack)
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_defaultUnpack() {
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local fn="$1"
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if [ -d "$fn" ]; then
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stripHash "$fn"
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# We can't preserve hardlinks because they may have been introduced by
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# store optimization, which might break things in the build
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cp -pr --reflink=auto --no-preserve=timestamps "$fn" $strippedName
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else
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case "$fn" in
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*.tar.xz | *.tar.lzma)
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# Don't rely on tar knowing about .xz.
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xz -d < "$fn" | tar xf -
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;;
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*.tar | *.tar.* | *.tgz | *.tbz2)
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# GNU tar can automatically select the decompression method
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# (info "(tar) gzip").
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tar xf "$fn"
|
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;;
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*)
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return 1
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;;
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esac
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|
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fi
|
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}
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unpackFile() {
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curSrc="$1"
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header "unpacking source archive $curSrc" 3
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if ! runOneHook unpackCmd "$curSrc"; then
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echo "do not know how to unpack source archive $curSrc"
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exit 1
|
||
fi
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||
stopNest
|
||
}
|
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|
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|
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unpackPhase() {
|
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runHook preUnpack
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||
|
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if [ -z "$srcs" ]; then
|
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if [ -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"
|
||
fi
|
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|
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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.
|
||
local dirsBefore=""
|
||
for i in *; do
|
||
if [ -d "$i" ]; then
|
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dirsBefore="$dirsBefore $i "
|
||
fi
|
||
done
|
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|
||
# Unpack all source archives.
|
||
for i in $srcs; do
|
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unpackFile $i
|
||
done
|
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|
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# Find the source directory.
|
||
if [ -n "$setSourceRoot" ]; then
|
||
runOneHook setSourceRoot
|
||
elif [ -z "$sourceRoot" ]; then
|
||
sourceRoot=
|
||
for i in *; do
|
||
if [ -d "$i" ]; then
|
||
case $dirsBefore in
|
||
*\ $i\ *)
|
||
;;
|
||
*)
|
||
if [ -n "$sourceRoot" ]; then
|
||
echo "unpacker produced multiple directories"
|
||
exit 1
|
||
fi
|
||
sourceRoot="$i"
|
||
;;
|
||
esac
|
||
fi
|
||
done
|
||
fi
|
||
|
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if [ -z "$sourceRoot" ]; then
|
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echo "unpacker appears to have produced no directories"
|
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exit 1
|
||
fi
|
||
|
||
echo "source root is $sourceRoot"
|
||
|
||
# By default, add write permission to the sources. This is often
|
||
# necessary when sources have been copied from other store
|
||
# locations.
|
||
if [ "$dontMakeSourcesWritable" != 1 ]; then
|
||
chmod -R u+w "$sourceRoot"
|
||
fi
|
||
|
||
runHook postUnpack
|
||
}
|
||
|
||
|
||
patchPhase() {
|
||
runHook prePatch
|
||
|
||
for i in $patches; do
|
||
header "applying patch $i" 3
|
||
local uncompress=cat
|
||
case "$i" in
|
||
*.gz)
|
||
uncompress="gzip -d"
|
||
;;
|
||
*.bz2)
|
||
uncompress="bzip2 -d"
|
||
;;
|
||
*.xz)
|
||
uncompress="xz -d"
|
||
;;
|
||
*.lzma)
|
||
uncompress="lzma -d"
|
||
;;
|
||
esac
|
||
# "2>&1" is a hack to make patch fail if the decompressor fails (nonexistent patch, etc.)
|
||
$uncompress < "$i" 2>&1 | patch ${patchFlags:--p1}
|
||
stopNest
|
||
done
|
||
|
||
runHook postPatch
|
||
}
|
||
|
||
|
||
fixLibtool() {
|
||
sed -i -e 's^eval sys_lib_.*search_path=.*^^' "$1"
|
||
}
|
||
|
||
|
||
configurePhase() {
|
||
runHook preConfigure
|
||
|
||
if [ -z "$configureScript" ]; then
|
||
configureScript=./configure
|
||
if ! [ -x $configureScript ]; then
|
||
echo "no configure script, doing nothing"
|
||
return
|
||
fi
|
||
fi
|
||
|
||
if [ -z "$dontFixLibtool" ]; then
|
||
find . -iname "ltmain.sh" | while read i; do
|
||
echo "fixing libtool script $i"
|
||
fixLibtool $i
|
||
done
|
||
fi
|
||
|
||
if [ -z "$dontAddPrefix" ]; then
|
||
configureFlags="${prefixKey:---prefix=}$prefix $configureFlags"
|
||
fi
|
||
|
||
# Add --disable-dependency-tracking to speed up some builds.
|
||
if [ -z "$dontAddDisableDepTrack" ]; then
|
||
if grep -q dependency-tracking $configureScript; then
|
||
configureFlags="--disable-dependency-tracking $configureFlags"
|
||
fi
|
||
fi
|
||
|
||
# By default, disable static builds.
|
||
if [ -z "$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 [ -z "$makeFlags" ] && ! [ -n "$makefile" -o -e "Makefile" -o -e "makefile" -o -e "GNUmakefile" ]; then
|
||
echo "no Makefile, doing nothing"
|
||
return
|
||
fi
|
||
|
||
# See https://github.com/NixOS/nixpkgs/pull/1354#issuecomment-31260409
|
||
makeFlags="SHELL=$SHELL $makeFlags"
|
||
|
||
echo "make flags: $makeFlags ${makeFlagsArray[@]} $buildFlags ${buildFlagsArray[@]}"
|
||
make ${makefile:+-f $makefile} \
|
||
${enableParallelBuilding:+-j${NIX_BUILD_CORES} -l${NIX_BUILD_CORES}} \
|
||
$makeFlags "${makeFlagsArray[@]}" \
|
||
$buildFlags "${buildFlagsArray[@]}"
|
||
|
||
runHook postBuild
|
||
}
|
||
|
||
|
||
checkPhase() {
|
||
runHook preCheck
|
||
|
||
echo "check flags: $makeFlags ${makeFlagsArray[@]} $checkFlags ${checkFlagsArray[@]}"
|
||
make ${makefile:+-f $makefile} \
|
||
${enableParallelBuilding:+-j${NIX_BUILD_CORES} -l${NIX_BUILD_CORES}} \
|
||
$makeFlags "${makeFlagsArray[@]}" \
|
||
${checkFlags:-VERBOSE=y} "${checkFlagsArray[@]}" ${checkTarget:-check}
|
||
|
||
runHook postCheck
|
||
}
|
||
|
||
|
||
installPhase() {
|
||
runHook preInstall
|
||
|
||
mkdir -p "$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 stuff, like
|
||
# stripping binaries, running patchelf and setting
|
||
# propagated-build-inputs.
|
||
fixupPhase() {
|
||
# Make sure everything is writable so "strip" et al. work.
|
||
for output in $outputs; do
|
||
if [ -e "${!output}" ]; then chmod -R u+w "${!output}"; fi
|
||
done
|
||
|
||
runHook preFixup
|
||
|
||
# Apply fixup to each output.
|
||
local output
|
||
for output in $outputs; do
|
||
prefix=${!output} runHook fixupOutput
|
||
done
|
||
|
||
if [ -n "$propagatedBuildInputs" ]; then
|
||
mkdir -p "$out/nix-support"
|
||
echo "$propagatedBuildInputs" > "$out/nix-support/propagated-build-inputs"
|
||
fi
|
||
|
||
if [ -n "$propagatedNativeBuildInputs" ]; then
|
||
mkdir -p "$out/nix-support"
|
||
echo "$propagatedNativeBuildInputs" > "$out/nix-support/propagated-native-build-inputs"
|
||
fi
|
||
|
||
if [ -n "$propagatedUserEnvPkgs" ]; then
|
||
mkdir -p "$out/nix-support"
|
||
echo "$propagatedUserEnvPkgs" > "$out/nix-support/propagated-user-env-packages"
|
||
fi
|
||
|
||
if [ -n "$setupHook" ]; then
|
||
mkdir -p "$out/nix-support"
|
||
substituteAll "$setupHook" "$out/nix-support/setup-hook"
|
||
fi
|
||
|
||
runHook postFixup
|
||
}
|
||
|
||
|
||
installCheckPhase() {
|
||
runHook preInstallCheck
|
||
|
||
echo "installcheck flags: $makeFlags ${makeFlagsArray[@]} $installCheckFlags ${installCheckFlagsArray[@]}"
|
||
make ${makefile:+-f $makefile} \
|
||
${enableParallelBuilding:+-j${NIX_BUILD_CORES} -l${NIX_BUILD_CORES}} \
|
||
$makeFlags "${makeFlagsArray[@]}" \
|
||
$installCheckFlags "${installCheckFlagsArray[@]}" ${installCheckTarget:-installcheck}
|
||
|
||
runHook postInstallCheck
|
||
}
|
||
|
||
|
||
distPhase() {
|
||
runHook preDist
|
||
|
||
echo "dist flags: $distFlags ${distFlagsArray[@]}"
|
||
make ${makefile:+-f $makefile} $distFlags "${distFlagsArray[@]}" ${distTarget:-dist}
|
||
|
||
if [ "$dontCopyDist" != 1 ]; then
|
||
mkdir -p "$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 $phase in
|
||
unpackPhase) header "unpacking sources";;
|
||
patchPhase) header "patching sources";;
|
||
configurePhase) header "configuring";;
|
||
buildPhase) header "building";;
|
||
checkPhase) header "running tests";;
|
||
installPhase) header "installing";;
|
||
fixupPhase) header "post-installation fixup";;
|
||
installCheckPhase) header "running install tests";;
|
||
*) header "$phase";;
|
||
esac
|
||
}
|
||
|
||
|
||
genericBuild() {
|
||
if [ -n "$buildCommand" ]; then
|
||
eval "$buildCommand"
|
||
return
|
||
fi
|
||
|
||
if [ -z "$phases" ]; then
|
||
phases="$prePhases unpackPhase patchPhase $preConfigurePhases \
|
||
configurePhase $preBuildPhases buildPhase checkPhase \
|
||
$preInstallPhases installPhase $preFixupPhases fixupPhase installCheckPhase \
|
||
$preDistPhases distPhase $postPhases";
|
||
fi
|
||
|
||
for curPhase in $phases; do
|
||
if [ "$curPhase" = buildPhase -a -n "$dontBuild" ]; then continue; fi
|
||
if [ "$curPhase" = checkPhase -a -z "$doCheck" ]; then continue; fi
|
||
if [ "$curPhase" = installPhase -a -n "$dontInstall" ]; then continue; fi
|
||
if [ "$curPhase" = fixupPhase -a -n "$dontFixup" ]; then continue; fi
|
||
if [ "$curPhase" = installCheckPhase -a -z "$doInstallCheck" ]; then continue; fi
|
||
if [ "$curPhase" = distPhase -a -z "$doDist" ]; then continue; fi
|
||
|
||
if [ -n "$tracePhases" ]; then
|
||
echo
|
||
echo "@ phase-started $out $curPhase"
|
||
fi
|
||
|
||
showPhaseHeader "$curPhase"
|
||
dumpVars
|
||
|
||
# Evaluate the variable named $curPhase if it exists, otherwise the
|
||
# function named $curPhase.
|
||
eval "${!curPhase:-$curPhase}"
|
||
|
||
if [ "$curPhase" = unpackPhase ]; then
|
||
cd "${sourceRoot:-.}"
|
||
fi
|
||
|
||
if [ -n "$tracePhases" ]; then
|
||
echo
|
||
echo "@ phase-succeeded $out $curPhase"
|
||
fi
|
||
|
||
stopNest
|
||
done
|
||
}
|
||
|
||
|
||
# Execute the post-hooks.
|
||
runHook postHook
|
||
|
||
|
||
# Execute the global user hook (defined through the Nixpkgs
|
||
# configuration option ‘stdenv.userHook’). This can be used to set
|
||
# global compiler optimisation flags, for instance.
|
||
runHook userHook
|
||
|
||
|
||
dumpVars
|