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glibc: Fix building with musl on GCC 8.

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GCC 8 introduced new warnings that were picked up by -Werror;
this commit makes them non-errors until fixed upstream.

See

* https://github.com/NixOS/nixpkgs/pull/68244#issuecomment-544307798
* https://github.com/nh2/static-haskell-nix/issues/56

This commit takes care to not change the derivation for non-musl builds.
This commit is contained in:
Niklas Hambüchen 2019-10-21 03:14:31 +02:00
parent c7e1fde9dc
commit 08ec575c93
2 changed files with 16 additions and 2 deletions
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2
pkgs/development/libraries/glibc/common.nix
View File

@ -98,7 +98,7 @@ stdenv.mkDerivation ({
++ lib.optional stdenv.buildPlatform.isDarwin ./darwin-cross-build.patch
# Remove after upgrading to glibc 2.28+
++ lib.optional (stdenv.hostPlatform != stdenv.buildPlatform) (fetchpatch {
++ lib.optional (stdenv.hostPlatform != stdenv.buildPlatform || stdenv.hostPlatform.isMusl) (fetchpatch {
url = "https://sourceware.org/git/?p=glibc.git;a=patch;h=780684eb04298977bc411ebca1eadeeba4877833";
name = "correct-pwent-parsing-issue-and-resulting-build.patch";
sha256 = "08fja894vzaj8phwfhsfik6jj2pbji7kypy3q8pgxvsd508zdv1q";

16
pkgs/development/libraries/glibc/default.nix
View File

@ -40,7 +40,21 @@ callPackage ./common.nix { inherit stdenv; } {
# limit rebuilds by only disabling pie w/musl
++ stdenv.lib.optional stdenv.hostPlatform.isMusl "pie";
NIX_CFLAGS_COMPILE = if withGd then "-Wno-error=stringop-truncation" else null;
NIX_CFLAGS_COMPILE =
if !stdenv.hostPlatform.isMusl
# TODO: This (returning a string or `null`, instead of a list) is to
# not trigger a mass rebuild due to the introduction of the
# musl-specific flags below.
# At next change to non-musl glibc builds, remove this `then`
# and the above condition, instead keeping only the `else` below.
then (if withGd then "-Wno-error=stringop-truncation" else null)
else
builtins.concatLists [
(stdenv.lib.optional withGd "-Wno-error=stringop-truncation")
# Fix -Werror build failure when building glibc with musl with GCC >= 8, see:
# https://github.com/NixOS/nixpkgs/pull/68244#issuecomment-544307798
(stdenv.lib.optional stdenv.hostPlatform.isMusl "-Wno-error=attribute-alias")
];
# When building glibc from bootstrap-tools, we need libgcc_s at RPATH for
# any program we run, because the gcc will have been placed at a new