diff options
Diffstat (limited to 'nixpkgs/pkgs/stdenv/generic/setup.sh')
| -rw-r--r-- | nixpkgs/pkgs/stdenv/generic/setup.sh | 90 |
1 files changed, 42 insertions, 48 deletions
diff --git a/nixpkgs/pkgs/stdenv/generic/setup.sh b/nixpkgs/pkgs/stdenv/generic/setup.sh index 311292169ec..0962a1ec2fc 100644 --- a/nixpkgs/pkgs/stdenv/generic/setup.sh +++ b/nixpkgs/pkgs/stdenv/generic/setup.sh @@ -17,7 +17,8 @@ fi # code). The hooks for <hookName> are the shell function or variable # <hookName>, and the values of the shell array ‘<hookName>Hooks’. runHook() { - local oldOpts="$(shopt -po nounset)" + local oldOpts="-u" + shopt -qo nounset || oldOpts="+u" set -u # May be called from elsewhere, so do `set -u`. local hookName="$1" @@ -32,7 +33,7 @@ runHook() { set -u # To balance `_eval` done - eval "${oldOpts}" + set "$oldOpts" return 0 } @@ -40,7 +41,8 @@ runHook() { # Run all hooks with the specified name, until one succeeds (returns a # zero exit code). If none succeed, return a non-zero exit code. runOneHook() { - local oldOpts="$(shopt -po nounset)" + local oldOpts="-u" + shopt -qo nounset || oldOpts="+u" set -u # May be called from elsewhere, so do `set -u`. local hookName="$1" @@ -57,7 +59,7 @@ runOneHook() { set -u # To balance `_eval` done - eval "${oldOpts}" + set "$oldOpts" return "$ret" } @@ -71,21 +73,18 @@ _callImplicitHook() { set -u local def="$1" local hookName="$2" - case "$(type -t "$hookName")" in - (function|alias|builtin) - set +u - "$hookName";; - (file) - set +u - source "$hookName";; - (keyword) :;; - (*) if [ -z "${!hookName:-}" ]; then - return "$def"; - else - set +u - eval "${!hookName}" - fi;; - esac + if declare -F "$hookName" > /dev/null; then + set +u + "$hookName" + elif type -p "$hookName" > /dev/null; then + set +u + source "$hookName" + elif [ -n "${!hookName:-}" ]; then + set +u + eval "${!hookName}" + else + return "$def" + fi # `_eval` expects hook to need nounset disable and leave it # disabled anyways, so Ok to to delegate. The alternative of a # return trap is no good because it would affect nested returns. @@ -96,7 +95,7 @@ _callImplicitHook() { # hooks exits the hook, not the caller. Also will only pass args if # command can take them _eval() { - if [ "$(type -t "$1")" = function ]; then + if declare -F "$1" > /dev/null 2>&1; then set +u "$@" # including args else @@ -212,18 +211,6 @@ isELF() { if [ "$magic" = $'\177ELF' ]; then return 0; else return 1; fi } -# Return success if the specified file is an ELF object -# and its e_type is ET_EXEC (executable file) -isELFExec() { - grep -ao -P '^\177ELF.{11}\x00\x02' "$1" >/dev/null -} - -# Return success if the specified file is an ELF object -# and its e_type is ET_DYN (shared object file) -isELFDyn() { - grep -ao -P '^\177ELF.{11}\x00\x03' "$1" >/dev/null -} - # Return success if the specified file is a script (i.e. starts with # "#!"). isScript() { @@ -401,6 +388,7 @@ findInputs() { # The current package's host and target offset together # provide a <=-preserving homomorphism from the relative # offsets to current offset + local -i mapOffsetResult function mapOffset() { local -ri inputOffset="$1" if (( "$inputOffset" <= 0 )); then @@ -408,7 +396,7 @@ findInputs() { else local -ri outputOffset="$inputOffset - 1 + $targetOffset" fi - echo "$outputOffset" + mapOffsetResult="$outputOffset" } # Host offset relative to that of the package whose immediate @@ -420,8 +408,8 @@ findInputs() { # Host offset relative to the package currently being # built---as absolute an offset as will be used. - local -i hostOffsetNext - hostOffsetNext="$(mapOffset relHostOffset)" + mapOffset relHostOffset + local -i hostOffsetNext="$mapOffsetResult" # Ensure we're in bounds relative to the package currently # being built. @@ -439,8 +427,8 @@ findInputs() { # Target offset relative to the package currently being # built. - local -i targetOffsetNext - targetOffsetNext="$(mapOffset relTargetOffset)" + mapOffset relTargetOffset + local -i targetOffsetNext="$mapOffsetResult" # Once again, ensure we're in bounds relative to the # package currently being built. @@ -449,7 +437,8 @@ findInputs() { [[ -f "$pkg/nix-support/$file" ]] || continue local pkgNext - for pkgNext in $(< "$pkg/nix-support/$file"); do + read -r -d '' pkgNext < "$pkg/nix-support/$file" || true + for pkgNext in $pkgNext; do findInputs "$pkgNext" "$hostOffsetNext" "$targetOffsetNext" done done @@ -500,10 +489,11 @@ activatePackage() { (( "$hostOffset" <= "$targetOffset" )) || exit -1 if [ -f "$pkg" ]; then - local oldOpts="$(shopt -po nounset)" + local oldOpts="-u" + shopt -qo nounset || oldOpts="+u" set +u source "$pkg" - eval "$oldOpts" + set "$oldOpts" fi # Only dependencies whose host platform is guaranteed to match the @@ -522,10 +512,11 @@ activatePackage() { fi if [[ -f "$pkg/nix-support/setup-hook" ]]; then - local oldOpts="$(shopt -po nounset)" + local oldOpts="-u" + shopt -qo nounset || oldOpts="+u" set +u source "$pkg/nix-support/setup-hook" - eval "$oldOpts" + set "$oldOpts" fi } @@ -1273,17 +1264,19 @@ showPhaseHeader() { genericBuild() { if [ -f "${buildCommandPath:-}" ]; then - local oldOpts="$(shopt -po nounset)" + local oldOpts="-u" + shopt -qo nounset || oldOpts="+u" set +u source "$buildCommandPath" - eval "$oldOpts" + set "$oldOpts" return fi if [ -n "${buildCommand:-}" ]; then - local oldOpts="$(shopt -po nounset)" + local oldOpts="-u" + shopt -qo nounset || oldOpts="+u" set +u eval "$buildCommand" - eval "$oldOpts" + set "$oldOpts" return fi @@ -1313,10 +1306,11 @@ genericBuild() { # Evaluate the variable named $curPhase if it exists, otherwise the # function named $curPhase. - local oldOpts="$(shopt -po nounset)" + local oldOpts="-u" + shopt -qo nounset || oldOpts="+u" set +u eval "${!curPhase:-$curPhase}" - eval "$oldOpts" + set "$oldOpts" if [ "$curPhase" = unpackPhase ]; then cd "${sourceRoot:-.}" |