That's indeed one Hadrian solution. An alternative one (requires 'master' from yesterday) is: $ hadrian/build.sh --flavour=... "stage1.rts.cc.c.opts += -fsanitize=address -fsanitize=undefined" Note that I'm not quite sure who between GHC and the C compiler gets invoked to build the RTS. If it's GHC, then you'll need to replace 'builder Cc' in Matthew's solution with 'builder (Ghc CompileCWithGhc)', or with the key-value style approach: $ hadrian/build.sh --flavour=... "stage1.rts.ghc.c.opts += -fsanitize=address -fsanitize=undefined" You can find more about how both of those settings mechanisms work here: https://gitlab.haskell.org/ghc/ghc/blob/master/hadrian/doc/user-settings.md ... once GitLab works again. :-) Until then: https://github.com/ghc/ghc/blob/master/hadrian/doc/user-settings.md On 11/07/2019 11:49, Matthew Pickering wrote:

Hi Siddharth,

The correct way is to create a custom flavour with something like the following in.

grts = quickFlavour { name = "grts", args = args quickFlavour <> (builder Cc ? package rts ? arg "-g3" <> arg "-O0") }

Cheers,

Matt

On Thu, Jul 11, 2019 at 10:20 AM Siddharth Bhat wrote:

...

Hello all,

I was interested in building the GHC RTS with GCC's AddressSanitizer and Ubsan enabled.

What I want to do very specifically is to pass "-fsanitize=address -fsanitize=undefined" when compiling the RTS.

What's the "correct" way to set this up in the build system? Is there a configure flag? Do I need to change the Shake script? Thanks, ~Siddharth _______________________________________________ ghc-devs mailing list ghc-devs@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs

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