Forgot to add that my current workaround is to compile with "-static -package-env=-" i.e. ghc -static -package-env=- -prof -fprof-auto hello.hs Adding just -package-env=- i.e. gives me the same error as compiling without it. ghc -package-env=- -prof -fprof-auto hello.hs [1 of 2] Compiling Main ( hello.hs, hello.o ) hello.hs:1:1: error: Could not find module ‘Prelude’ Perhaps you haven't installed the "p_dyn" libraries for package ‘base-4.18.0.0’? Use -v (or `:set -v` in ghci) to see a list of the files searched for. | 1 | | ^ Adding just -static gives ghc -static -prof -fprof-auto hello.hs Loaded package environment from /Users/gcolpitts/.ghc/x86_64-darwin-9.6.1/environments/default [1 of 2] Compiling Main ( hello.hs, hello.o ) [Missing object file] [2 of 2] Linking hello ld: warning: directory not found for option '-L/opt/local/lib/' ld: library not found for -lHStxmth-0.12.7.1-f954854b_p clang: error: linker command failed with exit code 1 (use -v to see invocation) ghc-9.6.1: `gcc' failed in phase `Linker'. (Exit code: 1) I can't find any doc saying that -static is required for profiling on the Mac but perhaps that is the case? On Sun, May 14, 2023 at 3:43 PM George Colpitts <george.colpitts@gmail.com> wrote:
Is anybody on 9.6.1 having problems profiling on a Mac? As I reported in https://gitlab.haskell.org/ghc/ghc/-/issues/23211
ghc -prof -fprof-auto hello.hs
where the file hello.hs consists of the line:
main = print "hello"
gets the error:
Could not find module ‘Prelude’
Perhaps you haven't installed the "p_dyn" libraries for package ‘base-4.18.0.0’?
It seems to me like a regression of the closed bug https://gitlab.haskell.org/ghc/ghc/-/issues/20707.
Thanks George