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nixpkgs/pkgs/build-support/cc-wrapper/utils.sh
David McFarland 175461e09b cc-wrapper: don't expand $ in response files
This makes the response file handling more consistent with GCC.

For example, a reponse file may contain:

    "-Wl,$ORIGIN"

GCC will treat this as a double quoted string and not expand the
variable reference.  Previously, cc-wrapper would expand the variable
in the same was as if the string was provided on the command line.
2016-11-19 20:21:32 -04:00

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skip () {
if [ -n "$NIX_DEBUG" ]; then
echo "skipping impure path $1" >&2
fi
}
# Checks whether a path is impure. E.g., `/lib/foo.so' is impure, but
# `/nix/store/.../lib/foo.so' isn't.
badPath() {
local p=$1
# Relative paths are okay (since they're presumably relative to
# the temporary build directory).
if [ "${p:0:1}" != / ]; then return 1; fi
# Otherwise, the path should refer to the store or some temporary
# directory (including the build directory).
test \
"$p" != "/dev/null" -a \
"${p:0:${#NIX_STORE}}" != "$NIX_STORE" -a \
"${p:0:4}" != "/tmp" -a \
"${p:0:${#NIX_BUILD_TOP}}" != "$NIX_BUILD_TOP"
}
expandResponseParams() {
local inparams=("$@")
local n=0
local p
params=()
while [ $n -lt ${#inparams[*]} ]; do
p=${inparams[n]}
case $p in
@*)
if [ -e "${p:1}" ]; then
args=$(<"${p:1}")
eval 'for arg in '${args//$/\\$}'; do params+=("$arg"); done'
else
params+=("$p")
fi
;;
*)
params+=("$p")
;;
esac
n=$((n + 1))
done
}