How can I get a Haskell installation to read in Cygwin?

Question

Here is the message I get when trying to install via via cabal-install:

$ cabal install --extra-include-dirs="C:\no_spaces\cygwin\usr\include" --extra-lib-dirs="C:\no_spaces\cygwin\lib" readline
Resolving dependencies...
Configuring readline-1.0.1.0...
checking for gcc... gcc
checking for C compiler default output file name... a.exe
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables... .exe
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking for GNUreadline.framework... checking for readline... no
checking for tputs in -lncurses... yes
checking for readline in -lreadline... yes
checking for rl_readline_version... yes
checking for rl_begin_undo_group... yes
checking for rl_erase_empty_line... yes
checking for rl_free_undo_list... yes
checking for rl_completion_word_break_hook in -lreadline... yes
configure: creating ./config.status
config.status: creating config.mk
config.status: creating readline.buildinfo
config.status: creating include/HsReadlineConfig.h
config.status: include/HsReadlineConfig.h is unchanged
cabal.exe: Missing dependencies on foreign libraries:
* Missing header file: HsReadline.h
* Missing C libraries: readline, ncurses
This problem can usually be solved by installing the system packages that
provide these libraries (you may need the "-dev" versions). If the libraries
are already installed but in a non-standard location then you can use the
flags --extra-include-dirs= and --extra-lib-dirs= to specify where they are.
cabal.exe: Error: some packages failed to install:
readline-1.0.1.0 failed during the configure step. The exception was:
ExitFailure 1

I have readline.h and something else, and it looks like they seem to find them. The absence of a problem with HsReadline.h seems strange: is not the part of the package I'm trying to install?

Any advice on how to get this job would be appreciated. I spent several days trying to get this to work, whether in gnuWin32 readline, MinGW or cygwin.

Answer 1

I'm going to assume that what Cygwin throws is the path to the DOS / Windows style: "C: \ no_spaces \ cygwin \ usr \ include"

Cygwin. , "/cygdrive/c/no_spaces/cygwin/usr/include"

HsReadline.h, , . , Cabal dev .