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nixpkgs/pkgs/development/libraries/c-ares/default.nix
Matthew Bauer d0677e6d45 treewide: add warning comment to “boot” packages
This adds a warning to the top of each “boot” package that reads:

  Note: this package is used for bootstrapping fetchurl, and thus cannot
  use fetchpatch! All mutable patches (generated by GitHub or cgit) that
  are needed here should be included directly in Nixpkgs as files.

This makes it clear to maintainer that they may need to treat this
package a little differently than others. Importantly, we can’t use
fetchpatch here due to using <nix/fetchurl.nix>. To avoid having stale
hashes, we need to include patches that are subject to changing
overtime (for instance, gitweb’s patches contain a version number at
the bottom).
2020-07-31 08:56:53 +02:00

48 lines
1.7 KiB
Nix

{ stdenv, fetchurl, writeTextDir }:
# Note: this package is used for bootstrapping fetchurl, and thus
# cannot use fetchpatch! All mutable patches (generated by GitHub or
# cgit) that are needed here should be included directly in Nixpkgs as
# files.
let self =
stdenv.mkDerivation rec {
name = "c-ares-1.15.0";
src = fetchurl {
url = "https://c-ares.haxx.se/download/${name}.tar.gz";
sha256 = "0lk8knip4xk6qzksdkn7085mmgm4ixfczdyyjw656c193y3rgnvc";
};
meta = with stdenv.lib; {
description = "A C library for asynchronous DNS requests";
homepage = "https://c-ares.haxx.se";
license = licenses.mit;
platforms = platforms.all;
};
# Adapted from running a cmake build
passthru.cmake-config = writeTextDir "c-ares-config.cmake"
''
set(c-ares_INCLUDE_DIR "${self}/include")
set(c-ares_LIBRARY c-ares::cares)
add_library(c-ares::cares SHARED IMPORTED)
set_target_properties(c-ares::cares PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${self}/include"
${stdenv.lib.optionalString stdenv.isLinux ''INTERFACE_LINK_LIBRARIES "nsl;rt"''}
)
set_property(TARGET c-ares::cares APPEND PROPERTY IMPORTED_CONFIGURATIONS RELEASE)
set_target_properties(c-ares::cares PROPERTIES
IMPORTED_LOCATION_RELEASE "${self}/lib/libcares${stdenv.targetPlatform.extensions.sharedLibrary}"
IMPORTED_SONAME_RELEASE "libcares${stdenv.targetPlatform.extensions.sharedLibrary}"
)
add_library(c-ares::cares_shared INTERFACE IMPORTED)
set_target_properties(c-ares::cares_shared PROPERTIES INTERFACE_LINK_LIBRARIES "c-ares::cares")
set(c-ares_SHARED_LIBRARY c-ares::cares_shared)
'';
}; in self