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nixpkgs/pkgs/build-support/setup-hooks/win-dll-link.sh
Artturin 238a6053c4 stdenv: support opt-in __structuredAttrs
Co-authored-by: Robin Gloster <mail@glob.in>

stdenv: print message if structuredAttrs is enabled

stdenv: add _append

reduces the chance of a user doing it wrong

fix nix develop issue

output hooks don't work yet in nix develop though

making $outputs be the same on non-structuredAttrs and structuredAttrs
is too much trouble.

lets instead make a function that gets the output names

reading environment file '/nix/store/2x7m69a2sm2kh0r6v0q5s9z1dh41m4xf-xz-5.2.5-env-bin'
nix: src/nix/develop.cc:299: std::string Common::makeRcScript(nix::ref<nix::Store>, const BuildEnvironment&, const Path&): Assertion `outputs != buildEnvironment.vars.end()' failed.

use a function to get all output names instead of using $outputs

copy env functionality from https://github.com/NixOS/nixpkgs/pull/76732/commits
2022-12-08 06:13:19 +02:00

46 lines
1.6 KiB
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fixupOutputHooks+=(_linkDLLs)
# For every *.{exe,dll} in $output/bin/ we try to find all (potential)
# transitive dependencies and symlink those DLLs into $output/bin
# so they are found on invocation.
# (DLLs are first searched in the directory of the running exe file.)
# The links are relative, so relocating whole /nix/store won't break them.
_linkDLLs() {
(
if [ ! -d "$prefix/bin" ]; then exit; fi
cd "$prefix/bin"
# Compose path list where DLLs should be located:
# prefix $PATH by currently-built outputs
local DLLPATH=""
local outName
for outName in $(getAllOutputNames); do
addToSearchPath DLLPATH "${!outName}/bin"
done
DLLPATH="$DLLPATH:$PATH"
echo DLLPATH="'$DLLPATH'"
linkCount=0
# Iterate over any DLL that we depend on.
local dll
for dll in $($OBJDUMP -p *.{exe,dll} | sed -n 's/.*DLL Name: \(.*\)/\1/p' | sort -u); do
if [ -e "./$dll" ]; then continue; fi
# Locate the DLL - it should be an *executable* file on $DLLPATH.
local dllPath="$(PATH="$DLLPATH" type -P "$dll")"
if [ -z "$dllPath" ]; then continue; fi
# That DLL might have its own (transitive) dependencies,
# so add also all DLLs from its directory to be sure.
local dllPath2
for dllPath2 in "$dllPath" "$(dirname $(readlink "$dllPath" || echo "$dllPath"))"/*.dll; do
if [ -e ./"$(basename "$dllPath2")" ]; then continue; fi
CYGWIN+=\ winsymlinks:nativestrict ln -sr "$dllPath2" .
linkCount=$(($linkCount+1))
done
done
echo "Created $linkCount DLL link(s) in $prefix/bin"
)
}