diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/systems/default.nix | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/lib/systems/default.nix b/lib/systems/default.nix index 78ccd50ba79a5..a3462d2d424b2 100644 --- a/lib/systems/default.nix +++ b/lib/systems/default.nix @@ -86,7 +86,7 @@ rec { # choice. else "bfd"; extensions = rec { - sharedLibrary = + sharedLibrary = assert final.hasSharedLibraries; /**/ if final.isDarwin then ".dylib" else if final.isWindows then ".dll" else ".so"; @@ -132,6 +132,25 @@ rec { # uname -r release = null; }; + + # It is important that hasSharedLibraries==false when the platform has no + # dynamic library loader. Various tools (including the gcc build system) + # have knowledge of which platforms are incapable of dynamic linking, and + # will still build on/for those platforms with --enable-shared, but simply + # omit any `.so` build products such as libgcc_s.so. When that happens, + # it causes hard-to-troubleshoot build failures. + hasSharedLibraries = with final; + (isAndroid || isGnu || isMusl # Linux (allows multiple libcs) + || isDarwin || isSunOS || isOpenBSD || isFreeBSD || isNetBSD # BSDs + || isCygwin || isMinGW # Windows + ) && !isStatic; + + # The difference between `isStatic` and `hasSharedLibraries` is mainly the + # addition of the `staticMarker` (see make-derivation.nix). Some + # platforms, like embedded machines without a libc (e.g. arm-none-eabi) + # don't support dynamic linking, but don't get the `staticMarker`. + # `pkgsStatic` sets `isStatic=true`, so `pkgsStatic.hostPlatform` always + # has the `staticMarker`. isStatic = final.isWasm || final.isRedox; # Just a guess, based on `system` |