diff options
| -rw-r--r-- | flake.nix | 11 | ||||
| -rw-r--r-- | meson.build | 10 | ||||
| -rw-r--r-- | package.nix | 4 |
3 files changed, 21 insertions, 4 deletions
@@ -99,9 +99,10 @@ ]; stdenvs = [ - "gccStdenv" + # see assertion in package.nix why these two are disabled + # "stdenv" + # "gccStdenv" "clangStdenv" - "stdenv" "libcxxStdenv" "ccacheStdenv" ]; @@ -121,7 +122,11 @@ name = "${stdenvName}Packages"; value = f stdenvName; }) stdenvs - ); + ) + // { + # TODO delete this and reënable gcc stdenvs once gcc compiles kj coros correctly + stdenvPackages = f "clangStdenv"; + }; # Memoize nixpkgs for different platforms for efficiency. nixpkgsFor = forAllSystems ( diff --git a/meson.build b/meson.build index b015cc606..f89f5a016 100644 --- a/meson.build +++ b/meson.build @@ -167,10 +167,18 @@ endif # frees one would expect when the objects are unique_ptrs. these problems # often show up as memory corruption when nesting generators (since we do # treat generators like owned memory) and will cause inexplicable crashs. +# +# gcc 13 does not compile capnp coroutine code correctly. a newer version +# may fix this. (cf. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102051) +# we allow gcc 13 here anyway because CI uses it for clang-tidy, and when +# the compiler crashes outright if won't produce any bad binaries either. assert( cxx.get_id() != 'gcc' or cxx.version().version_compare('>=13'), - 'GCC 12 and earlier are known to miscompile lix coroutines, use GCC 13 or clang.' + 'GCC is known to miscompile coroutines, use clang.' ) +if cxx.get_id() == 'gcc' + warning('GCC is known to crash while building coroutines, use clang.') +endif # Translate some historical and Mesony CPU names to Lixy CPU names. diff --git a/package.nix b/package.nix index e5ab5eff0..eebf222b7 100644 --- a/package.nix +++ b/package.nix @@ -90,6 +90,10 @@ capnproto-lix = capnproto.overrideAttrs { CXXFLAGS = "-std=c++20"; }; }, }: + +# gcc miscompiles coroutines at least until 13.2, possibly longer +assert stdenv.cc.isClang || lintInsteadOfBuild; + let inherit (__forDefaults) canRunInstalled; inherit (lib) fileset; |