If the bootstrapping compiler is the Haskell Platform on Windows this change can break the build if the Platofrm install directory includes spaces. Since before this change the intree gcc was always used on Windows, but now the bootstrapping ghc's gcc is used for CC_STAGE0 for hsc2hs invocations. Adding wrapping single quotes like $1_$2_HSC2HS_CC_OPTS and $1_$2_HSC2HS_LD_OPTS to the --cc and --ld options seems like the simplest and best solution. Fyi, Bill On Sat, Mar 2, 2013 at 9:43 AM, Ian Lynagh wrote:

diff --git a/rules/distdir-opts.mk b/rules/distdir-opts.mk index 748e27e..50cc05e 100644 --- a/rules/distdir-opts.mk +++ b/rules/distdir-opts.mk @@ -79,10 +79,11 @@ $1_$2_HSC2HS_LD_OPTS:=$$(shell for i in $$($1_$2_DIST_LD_OPTS); do echo \'--lfla endif

$1_$2_ALL_HSC2HS_OPTS = \ - --cc=$$(WhatGccIsCalled) \ - --ld=$$(WhatGccIsCalled) \ + --cc=$$(CC_STAGE$3) \ + --ld=$$(CC_STAGE$3) \ $$(CONF_HSC2HS_OPTS) \ $$(SRC_HSC2HS_OPTS) \ + $$(SRC_HSC2HS_OPTS_STAGE$3) \ --cflag=-D__GLASGOW_HASKELL__=$$(if $$(filter 0,$3),$$(GhcCanonVersion),$$(ProjectVersionInt)) \ --cflag=-D$$(HostArch_CPP)_HOST_ARCH=1 \ --cflag=-D$$(HostOS_CPP)_HOST_OS=1 \

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