happy required to build ghc 6.8.1 from source

I am building GHC 6.8.1 from source tarballs:

f91de87e7c0a3fe2f27c5a83212d9743  ghc-6.8.1-src-extralibs.tar.bz2
8d47d4dcde96c31fe8bedcee7f99eaf1  ghc-6.8.1-src.tar.bz2

The sequence "./configure --prefix=/... ; make" results in the error during "make"

Configuring haskell-src-1.0.1.1...
rm -f haskell-src/GNUmakefile
cp Makefile.local haskell-src
if ifBuildable/ifBuildable haskell-src; then \
   cd haskell-src && setup/Setup makefile -f GNUmakefile; \
fi
Preprocessing library haskell-src-1.0.1.1...
Setup: The program happy is required but it could not be found
make[1]: *** [haskell-src/GNUmakefile] Error 1
make[1]: Leaving directory `/tmp/g1/ghc-6.8.1/libraries'
make: *** [stage1] Error 2

However, the Building guide Building/Prerequisites says

If you start from a source tarball of GHC (i.e. not a darcs checkout), then you don't need Happy, because we supply the pre-processed versions of the Happy parsers.

I have been able to repeat this problem both on an i386 Debian Etch system and a x86_64 RHEL4 system.

The workaround is to install happy.

Trac metadata

Trac field	Value
Version	6.8.1
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system	Unknown
Architecture	Unknown