#4469: recompilation or build system bug
---------------------------------+------------------------------------------
Reporter: igloo | Owner:
Type: bug | Status: new
Priority: normal | Milestone: 7.0.2
Component: Build System | Version: 6.12.3
Keywords: | Testcase:
Blockedby: | Difficulty:
Os: Unknown/Multiple | Blocking:
Architecture: Unknown/Multiple | Failure: None/Unknown
---------------------------------+------------------------------------------
First reported here:
http://www.haskell.org/pipermail/cvs-ghc/2010-November/057293.html
If you add `INLINE` pragmas to `fromInteger` and `toEnum` for `Word8` and
run `make` in the `ghc` subdirectory, the build fails with:
{{{
"inplace/bin/ghc-stage1" -o ghc/stage2/build/tmp/ghc-stage2 -H32m -O
-Wall -H64m -O0 -i -ighc/. -ighc/stage2/build
-ighc/stage2/build/autogen -Ighc/stage2/build -Ighc/stage2/build/autogen
-O2 -O -DGHCI -threaded -package ghc-7.1.20101102 -package haskeline -XCPP
-XPatternGuards -XForeignFunctionInterface -XUnboxedTuples
-XFlexibleInstances -XMagicHash -no-user-package-conf -rtsopts -odir
ghc/stage2/build -hidir ghc/stage2/build -stubdir ghc/stage2/build -hisuf
hi -osuf o -hcsuf hc ghc/stage2/build/Main.o
ghc/stage2/build/GhciMonad.o ghc/stage2/build/GhciTags.o
ghc/stage2/build/InteractiveUI.o ghc/stage2/build/hschooks.o
/home/ian/ghc/darcs/ghc/libraries/utf8-string/dist-
install/build/libHSutf8-string-0.3.6.a(String.o): In function `s1eq_info':
(.text+0x18d): undefined reference to `base_GHCziWord_zdwzdctoEnum4_info'
/home/ian/ghc/darcs/ghc/libraries/utf8-string/dist-
install/build/libHSutf8-string-0.3.6.a(String.o): In function
`r17C_closure':
(.data+0xc8): undefined reference to
`base_GHCziWord_zdwzdctoEnum4_closure'
/home/ian/ghc/darcs/ghc/libraries/utf8-string/dist-
install/build/libHSutf8-string-0.3.6.a(String.o): In function
`r17M_closure':
(.data+0x208): undefined reference to
`base_GHCziWord_zdwzdctoEnum4_closure'
/home/ian/ghc/darcs/ghc/libraries/base/dist-
install/build/libHSbase-4.3.0.0.a(Types.o):(.data+0x3188): undefined
reference to `base_GHCziWord_zdfBitsWord8zuzdcfromInteger_closure'
/home/ian/ghc/darcs/ghc/libraries/base/dist-
install/build/libHSbase-4.3.0.0.a(Types.o):(.data+0x29b8): undefined
reference to `base_GHCziWord_zdfBitsWord8zuzdcfromInteger_closure'
collect2: ld returned 1 exit status
make[2]: *** [ghc/stage2/build/tmp/ghc-stage2] Error 1
make[1]: *** [all_ghc] Error 2
make[1]: Leaving directory `/home/ian/ghc/darcs/ghc'
make: *** [all] Error 2
}}}
{{{
Codec.Binary.UTF8.String
imports
Data.Word
imports
GHC.Word
}}}
but when running `make` we got:
{{{
"inplace/bin/ghc-stage1" [...] libraries/base/./Data/Word.hs -o
libraries/base/dist-install/build/Data/Word.o
compilation IS NOT required
}}}
and the timestamps show that `String` wasn't rebuilt:
{{{
14:49 libraries/base/dist-install/build/GHC/Word.o
14:49 libraries/base/dist-install/build/GHC/Word.hi
14:49 libraries/base/dist-install/build/Data/Word.o
12:33 libraries/base/dist-install/build/Data/Word.hi
12:34 libraries/utf8-string/dist-install/build/Codec/Binary/UTF8/String.o
12:34 libraries/utf8-string/dist-install/build/Codec/Binary/UTF8/String.hi
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4469>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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