6.12.1 HC bootstrap failes due to suspicious static library ordering

I found ghc-stage2 doesn't link because of the order of static libraries passed to gcc. The problem occurs on FreeBSD but I believe it's platform-independent.

The build system puts rts/dist/build/libHSrts.a followed by rts/dist/build/libHSrtsmain.a. The latter has an undefined symbol to "hs_main" which is defined in libHSrts.a, so the linker complains about the absence of hs_main.

The following patch to rts/ghc.mk solves the problem:

--- ghc.mk.orig 2009-12-11 03:11:33.000000000 +0900
+++ ghc.mk
@@ -19,8 +19,9 @@ rts_dist_HC = $(GHC_STAGE1)
 # merge GhcLibWays and GhcRTSWays but strip out duplicates
 rts_WAYS = $(GhcLibWays) $(filter-out $(GhcLibWays),$(GhcRTSWays))
 
-ALL_RTS_LIBS = $(foreach way,$(rts_WAYS),rts/dist/build/libHSrts$($(way)_libsuf)) \
-              rts/dist/build/libHSrtsmain.a
+ALL_RTS_LIBS = rts/dist/build/libHSrtsmain.a \
+       $(foreach way,$(rts_WAYS),rts/dist/build/libHSrts$($(way)_libsuf))
+
 all_rts : $(ALL_RTS_LIBS)
 
 # -----------------------------------------------------------------------------

Trac metadata

Trac field	Value
Version	6.12.1
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Build System
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