Cannot have GHC in ARMv6 architecture

[jmcf125 at openmailbox.org]

Hi,

I have tried to have GHC in my Raspberry Pi, got stuck in the issue 7754
(https://ghc.haskell.org/trac/ghc/ticket/7754), since I didn't know
where to pass options to terminfo's configure file, although I did copy
the headers from my Raspberry Pi. I've been using HUGS ever since, as
Arch Linux doesn't have GHC for ARMv6, and deb2targz would not work.

I'm aware I have a phase 0 compiler installed, need to build a phase 1
compiler, and use that to cross-compile GHC itself (I wasn't the 1st
time I tried, couldn't find as much information as now).

I've read the following pages:
https://ghc.haskell.org/trac/ghc/wiki/Building/Preparation/RaspberryPi
https://ghc.haskell.org/trac/ghc/wiki/Building/CrossCompiling
https://ghc.haskell.org/trac/ghc/wiki/CrossCompilation
along with quite a few bug reports, and questions on Stack Overflow that
seemed related but really aren't, or that are already exposed in the
tickets mentioned below.

Below,
/home/jmcf125/ghc-raspberry-pi/ghc/libraries/terminfo/include-curses and
/home/jmcf125/ghc-raspberry-pi/ghc/libraries/terminfo/lib-curses are
directories to which I copied any headers and libraries, respectively,
from my Raspberry Pi.

I'm not sure which libraries I am supposed to point configure at. These
are the headers-libraries combinations I tried:

$ ./configure --target=arm-linux-gnueabihf --with-curses-includes=/home/jmcf125/ghc-raspberry-pi/ghc/libraries/terminfo/include-curses --with-curses-libraries=/home/jmcf125/ghc-raspberry-pi/ghc/libraries/terminfo/lib-curses && make -j5
(...)
checking for unistd.h... yes
checking ncurses.h usability... no
checking ncurses.h presence... no
checking for ncurses.h... no
checking curses.h usability... no
checking curses.h presence... no
checking for curses.h... no
configure: error: in `/home/jmcf125/ghc-raspberry-pi/ghc/libraries/terminfo':
configure: error: curses headers could not be found, so this package cannot be built
See `config.log' for more details
libraries/terminfo/ghc.mk:4: recipe for target 'libraries/terminfo/dist-install/package-data.mk' failed
make[1]: *** [libraries/terminfo/dist-install/package-data.mk] Error 1
Makefile:71: recipe for target 'all' failed
make: *** [all] Error 2
(https://ghc.haskell.org/trac/ghc/ticket/7754)

$ ./configure --target=arm-linux-gnueabihf --with-curses-includes=/usr/include --with-curses-libraries=/home/jmcf125/ghc-raspberry-pi/ghc/libraries/terminfo/lib-curses && make -j5
(...)
checking for unistd.h... yes
checking ncurses.h usability... yes
checking ncurses.h presence... yes
checking for ncurses.h... yes
checking for setupterm in -ltinfo... no
checking for setupterm in -lncursesw... no
checking for setupterm in -lncurses... no
checking for setupterm in -lcurses... no
configure: error: in `/home/jmcf125/ghc-raspberry-pi/ghc/libraries/terminfo':
configure: error: curses library not found, so this package cannot be built
See `config.log' for more details
libraries/terminfo/ghc.mk:4: recipe for target 'libraries/terminfo/dist-install/package-data.mk' failed
make[1]: *** [libraries/terminfo/dist-install/package-data.mk] Error 1
Makefile:71: recipe for target 'all' failed
make: *** [all] Error 2
(https://ghc.haskell.org/trac/ghc/ticket/7281)

$ ./configure --target=arm-linux-gnueabihf --with-curses-includes=/usr/include --with-curses-libraries=/usr/lib && make -j5
<OR>
$ ./configure --target=arm-linux-gnueabihf --with-curses-includes=/home/jmcf125/ghc-raspberry-pi/ghc/libraries/terminfo/include-curses --with-curses-libraries=/usr/lib && make -j5
(...)
Configuring terminfo-0.4.0.1...
configure: WARNING: unrecognized options: --with-compiler, --with-gcc
checking for arm-unknown-linux-gnueabihf-gcc...
/home/jmcf125/ghc-raspberry-pi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin/arm-linux-gnueabihf-gcc
checking whether the C compiler works... no
configure: error: in `/home/jmcf125/ghc-raspberry-pi/ghc/libraries/terminfo':
configure: error: C compiler cannot create executables
See `config.log' for more details
libraries/terminfo/ghc.mk:4: recipe for target 'libraries/terminfo/dist-install/package-data.mk' failed
make[1]: *** [libraries/terminfo/dist-install/package-data.mk] Error 77
Makefile:71: recipe for target 'all' failed
make: *** [all] Error 2

Concerning the last 2, it'd be odd if they worked, how could, say, the
GCC cross-compiler for ARM use x86_64 libraries? I tried them anyway,
since the 1st 2 errors didn't seem to make sense...

Also, options --includedir and --oldincludedir seem to have no effect
(always get issue 7754), and it doesn't matter if I build registarised
or not, the results are the same (registarised, I'm using LLVM 3.6.2-3).

I'm sorry if I'm wasting your time with what to you might seem such a
simple thing, and not real development on GHC, but I don't know where
else to turn to. I'm still learning Haskell, and have never had to
compile compilers before.

Thank you in advance,
João Miguel