Hi all, I'm trying to debug a AArch64/Linux specific RTS issue and digging around in the rts C code, I see a large amount of code wrapped in "#if DEBUG" type statements, but no way to enable in either mk/build.mk or it seems in any of the other build related settings files in the mk/ directory. The only way I have found to enable this debug code that actually works is to enable this DEBUG code is to edit mk/ghc.mk as follows: -STANDARD_OPTS += -DCOMPILING_RTS +STANDARD_OPTS += -DCOMPILING_RTS -DDEBUG However, once I do that I get a bunch of C synatx errors. I am doing this wrong or has the DEBUG code bit rotted? Cheers, Erik -- ---------------------------------------------------------------------- Erik de Castro Lopo http://www.mega-nerd.com/