[Haskell-beginners] Error when running `cabal install cabal-install`

[Peng Yu]

> Long story short: Try
>  $> cabal install --extra-include-dirs=/opt/local/include --extra-lib-dirs=/opt/local/lib

I tried it but it still shows the error messages.

~$ cabal install --extra-include-dirs=/opt/local/include
--extra-lib-dirs=/opt/local/lib cabal-install

Resolving dependencies...
Configuring cabal-install-1.22.3.0...
Failed to install cabal-install-1.22.3.0
Build log ( /Users/py/.cabal/logs/cabal-install-1.22.3.0.log ):
cabal: Error: some packages failed to install:
cabal-install-1.22.3.0 failed during the configure step. The exception was:
user error ('/usr/bin/ghc' exited with an error:
Undefined symbols for architecture x86_64:
"_iconv", referenced from:
_hs_iconv in libHSbase-4.7.0.1.a(iconv.o)
(maybe you meant: _hs_iconv,
_base_GHCziIOziEncodingziIconv_iconvEncodingzuloc_info ,
_base_GHCziIOziEncodingziIconv_iconvEncoding8_info ,
_base_GHCziIOziEncodingziIconv_iconvEncoding9_closure , _hs_iconv_open ,
_base_GHCziIOziEncodingziIconv_iconvEncodingzuloc1_closure , _hs_iconv_close ,
_base_GHCziIOziEncodingziIconv_iconvEncoding6_info ,
_base_GHCziIOziEncodingziIconv_iconvEncoding4_closure ,
_base_GHCziIOziEncodingziIconv_iconvEncoding6_closure ,
_base_GHCziIOziEncodingziIconv_iconvEncoding10_closure ,
_base_GHCziIOziEncodingziIconv_iconvEncoding7_info ,
_base_GHCziIOziEncodingziIconv_iconvEncoding2_closure ,
_base_GHCziIOziEncodingziIconv_iconvEncoding2_info ,
_base_GHCziIOziEncodingziIconv_iconvEncodingzuloc_closure ,
_base_GHCziIOziEncodingziIconv_iconvEncoding3_info ,
_base_GHCziIOziEncodingziIconv_iconvEncoding10_info ,
_base_GHCziIOziEncodingziIconv_iconvEncoding9_info ,
_base_GHCziIOziEncodingziIconv_iconvEncoding8_closure ,
_base_GHCziIOziEncodingziIconv_iconvEncoding7_closure ,
_base_GHCziIOziEncodingziIconv_iconvEncodingzuloc1_info ,
_base_GHCziIOziEncodingziIconv_iconvEncoding3_closure )
"_iconv_close", referenced from:
_hs_iconv_close in libHSbase-4.7.0.1.a(iconv.o)
(maybe you meant: _hs_iconv_close)
"_iconv_open", referenced from:
_hs_iconv_open in libHSbase-4.7.0.1.a(iconv.o)
(maybe you meant: _hs_iconv_open)
"_locale_charset", referenced from:
_localeEncoding in libHSbase-4.7.0.1.a(PrelIOUtils.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see
invocation)
)


-- 
Regards,
Peng