[Caml-list] Cannot build OCaml using Cygwin

[Andre Tampubolon]

Hi,

I'm trying to build OCaml 3.11.1 using Cygwin.
It's still unsuccessful.

$ make -f Makefile.nt world
cd byterun ; make -f Makefile.nt all
make[1]: Entering directory `/cygdrive/c/cygwin/home/ocaml-3.11.1/byterun'
gcc -mno-cygwin -DOCAML_STDLIB_DIR='"C:/ocamlmgw/lib"' -I"C:\cygwin\bin" -O
-mms
-bitfields -Wall -Wno-unused -c interp.c
gcc: The -mno-cygwin flag has been removed; use a mingw-targeted
cross-compiler.

make[1]: *** [interp.o] Error 1
make[1]: Leaving directory `/cygdrive/c/cygwin/home/ocaml-3.11.1/byterun'
make: *** [coldstart] Error 2

I don't understand. I already installed the mingw package. What's wrong
here?
--
--Andre

[Alain Frisch]

On 16/12/2009 16:48, Andre Tampubolon wrote:
> I'm trying to build OCaml 3.11.1 using Cygwin.
> It's still unsuccessful.
>
> $ make -f Makefile.nt world
> cd byterun ; make -f Makefile.nt all
> make[1]: Entering directory `/cygdrive/c/cygwin/home/ocaml-3.11.1/byterun'
> gcc -mno-cygwin -DOCAML_STDLIB_DIR='"C:/ocamlmgw/lib"' -I"C:\cygwin\bin"
> -O -mms
> -bitfields -Wall -Wno-unused -c interp.c
> gcc: The -mno-cygwin flag has been removed; use a mingw-targeted
> cross-compiler.

Recent versions of gcc under Cygwin don't support the -mno-cygwin flag.
You can still install and use the gcc-3 packages. What I usually do is
to copy /bin/gcc-3.exe into $HOME/bin/gcc.exe (and to this directory in
front of your PATH).

-- Alain

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[Gerd Stolpmann]

Am Mittwoch, den 16.12.2009, 17:00 +0100 schrieb Alain Frisch:
> On 16/12/2009 16:48, Andre Tampubolon wrote:
> > I'm trying to build OCaml 3.11.1 using Cygwin.
> > It's still unsuccessful.
> >
> > $ make -f Makefile.nt world
> > cd byterun ; make -f Makefile.nt all
> > make[1]: Entering directory `/cygdrive/c/cygwin/home/ocaml-3.11.1/byterun'
> > gcc -mno-cygwin -DOCAML_STDLIB_DIR='"C:/ocamlmgw/lib"' -I"C:\cygwin\bin"
> > -O -mms
> > -bitfields -Wall -Wno-unused -c interp.c
> > gcc: The -mno-cygwin flag has been removed; use a mingw-targeted
> > cross-compiler.
>
> Recent versions of gcc under Cygwin don't support the -mno-cygwin flag.
> You can still install and use the gcc-3 packages. What I usually do is
> to copy /bin/gcc-3.exe into $HOME/bin/gcc.exe (and to this directory in
> front of your PATH).

Another way would be

gcc -V 3 -mno-cygwin

Of course, only for those who don't hardcode gcc arguments...

There is also the /etc/alternatives/gcc symlink which can be set
to /usr/bin/gcc-3.exe to select the default gcc version.

Gerd
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