#14889: ghc-HEAD broke cross-compilation on multiple tagets due to --via-asm switch -------------------------------------+------------------------------------- Reporter: slyfox | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.5 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- Commit http://git.haskell.org/ghc.git/commitdiff/5f6fcf7808b16d066ad0fb2068225b3f2e... enables '''--via-asm''' for all targets: {{{ ifeq "$(CrossCompiling)" "YES" -SRC_HSC2HS_OPTS_STAGE1 += --cross-compile -SRC_HSC2HS_OPTS_STAGE2 += --cross-compile +# We'll assume we compile with gcc or clang, and both support `-S` and can as such use the +# --via-asm pass, which should be faster and is required for cross compiling to windows, as +# the c compiler complains about non-constant expressions even though they are constant and +# end up as constants in the assembly. +SRC_HSC2HS_OPTS_STAGE1 += --cross-compile --via-asm +SRC_HSC2HS_OPTS_STAGE2 += --cross-compile --via-asm endif }}} But the discussion in original submission https://github.com/haskell/hsc2hs/pull/5 talks about opt-in and mostly x86 assembly support. Before this change targets like sparc were cross-compiling just fine. Now '''sparc-unknown-linux-gnu''' fails as: {{{ hsc2hs: Failed to extract integer CallStack (from HasCallStack): error, called at utils/hsc2hs/CrossCodegen.hs:606:27 in main:CrossCodegen make[1]: *** [libraries/unix/ghc.mk:4: libraries/unix/dist- install/build/System/Posix/Files.hs] Error 1 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14889 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler