Greetings,

Right now I'm developing an app, and I want to use the ncurses library, everything compiles correctly, however when I'm linking, ugly things start to happen:

I'm on Mac OS X Snow Leopard, with Haskell Platform 2010.2.0.0http://hackage.haskell.org/platform/changelog.html

This is the installation process I'm following, everything runs as expected until trying to build the project with Cabal.

Thanks in advance.

*$ brew install ncursesw --universal* Warning: It appears you have MacPorts or Fink installed. Software installed with MacPorts and Fink are known to cause problems. If you experience issues try uninstalling these tools. ==> Downloading http://ftp.gnu.org/pub/gnu/ncurses/ncurses-5.7.tar.gz File already downloaded and cached to /Users/roman/Library/Caches/Homebrew ==> ./configure --prefix=/Users/roman/.homebrew/Cellar/ncursesw/5.7 --mandir=/Users/roman/.homebrew/Cellar/ncursesw/5.7/share/man --disable-debug --disable-dependency-tracking --e ==> make install /Users/roman/.homebrew/Cellar/ncursesw/5.7: 2734 files, 14M, in 93 seconds

*$ cabal install ncurses --extra-include-dirs=/Users/roman/.homebrew/include --extra-lib-dirs=/Users/roman/.homebrew/lib --reinstall* Resolving dependencies... Configuring ncurses-0.2... Preprocessing library ncurses-0.2... Building ncurses-0.2... [1 of 4] Compiling UI.NCurses.Enums ( dist/build/UI/NCurses/Enums.hs, dist/build/UI/NCurses/Enums.o ) [2 of 4] Compiling UI.NCurses.Types ( UI/NCurses/Types.hs, dist/build/UI/NCurses/Types.o ) [3 of 4] Compiling UI.NCurses ( dist/build/UI/NCurses.hs, dist/build/UI/NCurses.o ) [4 of 4] Compiling UI.NCurses.Panel ( dist/build/UI/NCurses/Panel.hs, dist/build/UI/NCurses/Panel.o )

UI/NCurses/Panel.chs:49:0: Warning: The import of `UI.NCurses' is redundant except perhaps to import instances from `UI.NCurses' To import instances alone, use: import UI.NCurses() Registering ncurses-0.2... Installing library in /Users/roman/.cabal/lib/ncurses-0.2/ghc-6.12.3 Registering ncurses-0.2...

*$ cabal build* Preprocessing executables for TicTacToe-0.1... Building TicTacToe-0.1... Linking dist/build/TicTacToe/TicTacToe ... ld: warning: in /Users/roman/.homebrew/lib/libncursesw.dylib, file was built for unsupported file format which is not the architecture being linked (i386) Undefined symbols: "_start_color", referenced from: _s9ZP_info in libHSncurses-0.2.a(NCurses.o) "_wget_wch", referenced from: _sfkI_info in libHSncurses-0.2.a(NCurses.o) "_wenclose", referenced from: _s9Fs_info in libHSncurses-0.2.a(NCurses.o) "_beep", referenced from: _ncurseszm0zi2_UIziNCurses_beep1_info in libHSncurses-0.2.a(NCurses.o) (maybe you meant: _ncurseszm0zi2_UIziNCurses_beep2_closure, _ncurseszm0zi2_UIziNCurses_beep1_srt , _ncurseszm0zi2_UIziNCurses_beep_srt , _ncurseszm0zi2_UIziNCurses_beep3_info , _ncurseszm0zi2_UIziNCurses_beep2_srt , _ncurseszm0zi2_UIziNCurses_beep3_srt , _ncurseszm0zi2_UIziNCurses_beep1_closure , _ncurseszm0zi2_UIziNCurses_beep_info , _ncurseszm0zi2_UIziNCurses_beep1_info , _ncurseszm0zi2_UIziNCurses_beep3_closure , _ncurseszm0zi2_UIziNCurses_beep2_info , _ncurseszm0zi2_UIziNCurses_beep_closure ) "_echo", referenced from: _sc50_info in libHSncurses-0.2.a(NCurses.o) (maybe you meant: ___hscore_echo) "_can_change_color", referenced from: _ncurseszm0zi2_UIziNCurses_canDefineColor1_info in libHSncurses-0.2.a(NCurses.o) "_init_color", referenced from: _s97K_info in libHSncurses-0.2.a(NCurses.o) _scw2_info in libHSncurses-0.2.a(NCurses.o) "_wnoutrefresh", referenced from: _s2JC_info in NCurses.o _scSh_info in libHSncurses-0.2.a(NCurses.o) "_noraw", referenced from: _scaE_info in libHSncurses-0.2.a(NCurses.o) "_wtouchln", referenced from: _sd53_info in libHSncurses-0.2.a(NCurses.o) _sd53_info in libHSncurses-0.2.a(NCurses.o) "_wcolor_set", referenced from: _sav6_info in libHSncurses-0.2.a(NCurses.o) "_meta", referenced from: _s9KC_info in libHSncurses-0.2.a(NCurses.o) _scV2_info in libHSncurses-0.2.a(NCurses.o) "_initscr", referenced from: _ncurseszm0zi2_UIziNCurses_runCurses2_info in libHSncurses-0.2.a(NCurses.o) "_stdscr", referenced from: _stdscr$non_lazy_ptr in NCurses.o _stdscr$non_lazy_ptr in libHSncurses-0.2.a(NCurses.o) (maybe you meant: _stdscr$non_lazy_ptr) "_wbkgrndset", referenced from: _scOA_info in libHSncurses-0.2.a(NCurses.o) "_raw", referenced from: _scaE_info in libHSncurses-0.2.a(NCurses.o) (maybe you meant: _ffi_closure_raw_SYSV$non_lazy_ptr, _ffi_closure_raw_SYSV , _ffi_raw_call , _ffi_prep_raw_closure_loc ) "__nc_has_mouse", referenced from: _hsncurses_has_mouse in libHSncurses-0.2.a(hsncurses-shim.o) "_wtimeout", referenced from: _s9KE_info in libHSncurses-0.2.a(NCurses.o) _scV4_info in libHSncurses-0.2.a(NCurses.o) _sfkG_info in libHSncurses-0.2.a(NCurses.o) "_doupdate", referenced from: _ncurseszm0zi2_UIziNCurses_render1_info in libHSncurses-0.2.a(NCurses.o) "_baudrate", referenced from: _ncurseszm0zi2_UIziNCurses_baudrate1_info in libHSncurses-0.2.a(NCurses.o) (maybe you meant: _ncurseszm0zi2_UIziNCurses_baudrate1_info, _ncurseszm0zi2_UIziNCurses_baudrate_info , _ncurseszm0zi2_UIziNCurses_baudrate3_closure , _ncurseszm0zi2_UIziNCurses_baudrate_closure , _ncurseszm0zi2_UIziNCurses_baudrate_srt , _ncurseszm0zi2_UIziNCurses_baudrate2_info , _ncurseszm0zi2_UIziNCurses_baudrate2_closure , _ncurseszm0zi2_UIziNCurses_baudrate1_closure , _ncurseszm0zi2_UIziNCurses_baudrate3_info , _ncurseszm0zi2_UIziNCurses_baudrate1_srt , _ncurseszm0zi2_UIziNCurses_baudrate2_srt , _ncurseszm0zi2_UIziNCurses_baudrate3_srt ) "_whline_set", referenced from: _s9gs_info in libHSncurses-0.2.a(NCurses.o) "_wvline_set", referenced from: _s9fL_info in libHSncurses-0.2.a(NCurses.o) "_cbreak", referenced from: _s9ZJ_info in libHSncurses-0.2.a(NCurses.o) _sc7P_info in libHSncurses-0.2.a(NCurses.o) "_endwin", referenced from: _ncurseszm0zi2_UIziNCurses_endwin_info in libHSncurses-0.2.a(NCurses.o) (maybe you meant: _ncurseszm0zi2_UIziNCurses_endwin_info, _ncurseszm0zi2_UIziNCurses_endwin_closure ) "_wattr_on", referenced from: _saal_info in libHSncurses-0.2.a(NCurses.o) _saal_info in libHSncurses-0.2.a(NCurses.o) _saal_info in libHSncurses-0.2.a(NCurses.o) _saal_info in libHSncurses-0.2.a(NCurses.o) _saal_info in libHSncurses-0.2.a(NCurses.o) _saal_info in libHSncurses-0.2.a(NCurses.o) _saal_info in libHSncurses-0.2.a(NCurses.o) _saal_info in libHSncurses-0.2.a(NCurses.o) _saal_info in libHSncurses-0.2.a(NCurses.o) "_newwin", referenced from: _s9du_info in libHSncurses-0.2.a(NCurses.o) "_getmouse", referenced from: _sfkP_info in libHSncurses-0.2.a(NCurses.o) "_touchwin", referenced from: _sa69_info in libHSncurses-0.2.a(NCurses.o) "_untouchwin", referenced from: _sa6c_info in libHSncurses-0.2.a(NCurses.o) "_has_colors", referenced from: _ncurseszm0zi2_UIziNCurses_supportsColor1_info in libHSncurses-0.2.a(NCurses.o) _s9ZN_info in libHSncurses-0.2.a(NCurses.o) "_mousemask", referenced from: _s9ZL_info in libHSncurses-0.2.a(NCurses.o) "_use_default_colors", referenced from: _s9ZS_info in libHSncurses-0.2.a(NCurses.o) "_waddwstr", referenced from: _sduP_info in libHSncurses-0.2.a(NCurses.o) "_wmove", referenced from: _sdBo_info in libHSncurses-0.2.a(NCurses.o) "_dupwin", referenced from: _scTH_info in libHSncurses-0.2.a(NCurses.o) "_keypad", referenced from: _ncurseszm0zi2_UIziNCurses_zdwa3_info in libHSncurses-0.2.a(NCurses.o) _say8_info in libHSncurses-0.2.a(NCurses.o) _say8_info in libHSncurses-0.2.a(NCurses.o) _scV0_info in libHSncurses-0.2.a(NCurses.o) "_noecho", referenced from: _sc50_info in libHSncurses-0.2.a(NCurses.o) "_flash", referenced from: _ncurseszm0zi2_UIziNCurses_flash1_info in libHSncurses-0.2.a(NCurses.o) (maybe you meant: _ncurseszm0zi2_UIziNCurses_flash1_closure, _ncurseszm0zi2_UIziNCurses_flash_info , _ncurseszm0zi2_UIziNCurses_flash_srt , _ncurseszm0zi2_UIziNCurses_flash_closure , _ncurseszm0zi2_UIziNCurses_flash1_info , _ncurseszm0zi2_UIziNCurses_flash2_info , _ncurseszm0zi2_UIziNCurses_flash3_closure , _ncurseszm0zi2_UIziNCurses_flash1_srt , _ncurseszm0zi2_UIziNCurses_flash2_srt , _ncurseszm0zi2_UIziNCurses_flash2_closure , _ncurseszm0zi2_UIziNCurses_flash3_info , _ncurseszm0zi2_UIziNCurses_flash3_srt ) "_wborder_set", referenced from: _scFt_info in libHSncurses-0.2.a(NCurses.o) "_COLS", referenced from: _COLS$non_lazy_ptr in libHSncurses-0.2.a(NCurses.o) (maybe you meant: _COLS$non_lazy_ptr) "_init_pair", referenced from: _saTg_info in libHSncurses-0.2.a(NCurses.o) _saTg_info in libHSncurses-0.2.a(NCurses.o) _saTg_info in libHSncurses-0.2.a(NCurses.o) _saTg_info in libHSncurses-0.2.a(NCurses.o) _saTg_info in libHSncurses-0.2.a(NCurses.o) _saTg_info in libHSncurses-0.2.a(NCurses.o) _saTg_info in libHSncurses-0.2.a(NCurses.o) _saTg_info in libHSncurses-0.2.a(NCurses.o) _scdx_info in libHSncurses-0.2.a(NCurses.o) _scdx_info in libHSncurses-0.2.a(NCurses.o) _scdx_info in libHSncurses-0.2.a(NCurses.o) _scdx_info in libHSncurses-0.2.a(NCurses.o) _scdx_info in libHSncurses-0.2.a(NCurses.o) _scdx_info in libHSncurses-0.2.a(NCurses.o) _scdx_info in libHSncurses-0.2.a(NCurses.o) _scdx_info in libHSncurses-0.2.a(NCurses.o) "_nocbreak", referenced from: _sc7P_info in libHSncurses-0.2.a(NCurses.o) "_delwin", referenced from: _sb4T_info in libHSncurses-0.2.a(NCurses.o) "_getcurx", referenced from: _s9Iy_info in libHSncurses-0.2.a(NCurses.o) "_getcury", referenced from: _s9Ix_info in libHSncurses-0.2.a(NCurses.o) "_color_content", referenced from: _sff4_info in libHSncurses-0.2.a(NCurses.o) "_COLOR_PAIRS", referenced from: _COLOR_PAIRS$non_lazy_ptr in libHSncurses-0.2.a(NCurses.o) (maybe you meant: _COLOR_PAIRS$non_lazy_ptr) "_wattr_get", referenced from: _s9vO_info in libHSncurses-0.2.a(NCurses.o) "_wattr_off", referenced from: _saaF_info in libHSncurses-0.2.a(NCurses.o) _saaF_info in libHSncurses-0.2.a(NCurses.o) _saaF_info in libHSncurses-0.2.a(NCurses.o) _saaF_info in libHSncurses-0.2.a(NCurses.o) _saaF_info in libHSncurses-0.2.a(NCurses.o) _saaF_info in libHSncurses-0.2.a(NCurses.o) _saaF_info in libHSncurses-0.2.a(NCurses.o) _saaF_info in libHSncurses-0.2.a(NCurses.o) _saaF_info in libHSncurses-0.2.a(NCurses.o) "_wattr_set", referenced from: _s9vS_info in libHSncurses-0.2.a(NCurses.o) "_LINES", referenced from: _LINES$non_lazy_ptr in libHSncurses-0.2.a(NCurses.o) (maybe you meant: _LINES$non_lazy_ptr) ld: symbol(s) not found collect2: ld returned 1 exit status

Of course, the question is, how can I fix this issue? Thanks. :-)

Hi Roman, 2011/3/5 Román González :

ld: warning: in /Users/roman/.homebrew/lib/libncursesw.dylib, file was built for unsupported file format which is not the architecture being linked (i386)

This is the problem. You are using OS X 10.6 and Homebrew is building a 64 bit ncurses. However, GHC generates 32 bit code that expects to link against a 32 bit ncurses. In MacPorts, you would solve this by reinstall ncurses with the flag +universal that instructs MacPorts to build a universal binary containing both 32 and 64 bit versions of ncurses. I'm not sure what the equivalent would be for homebrew. Cheers, Max