Re: [Haskell-cafe] Is anybody on 9.6.1 having problems profiling on a Mac?

FWIW the environments file causing my problem is created by "cabal install --lib ..." On Mon, May 15, 2023 at 12:15 PM George Colpitts wrote:

Thanks for everybody's help, I have closed the issue https://gitlab.haskell.org/ghc/ghc/-/issues/23211. Sorry for bothering everyone. As I wrote in the bug:

@adamse http:///adamse, @mpickering http:///mpickering. You are right, there is something wrong about my environment file default. When I remove it I can compile with

ghc -static -prof -fprof-auto hello.hs

The need for -static is not documented as far as I know so I will file a doc bug. My apologies for not debugging this earlier. I will keep an eye out to see when an environment file gets created. Thanks again !

On Mon, May 15, 2023 at 9:11 AM George Colpitts wrote:

...

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