fftwMpi: link explicitly against -lmpi (#463809)

2025-11-23 03:49:53 +00:00
parent 87f61ef83a 01c82ddd15
commit 8fdae2b1a6
1 changed files with 9 additions and 1 deletions
@@ -69,7 +69,15 @@ stdenv.mkDerivation (finalAttrs: {
  ++ lib.optional (
    stdenv.hostPlatform.isx86_64 && (precision == "single" || precision == "double")
  ) "--enable-sse2 --enable-avx --enable-avx2 --enable-avx512 --enable-avx128-fma"
-  ++ lib.optional enableMpi "--enable-mpi"
+  ++ lib.optionals enableMpi [
+    "--enable-mpi"
+    # link libfftw3_mpi explicitly with -lmpi
+    # linker on darwin requires all symbols to be resolvable at link time
+    # see
+    #   https://github.com/FFTW/fftw3/issues/274
+    #   https://github.com/spack/spack/pull/29279
+    "MPILIBS=-lmpi"
+  ]
  # doc generation causes Fortran wrapper generation which hard-codes gcc
  ++ lib.optional (!withDoc) "--disable-doc";