On Sun, Nov 2, 2014 at 1:19 AM, Greg Jung <[email protected]> wrote:
> Hi guys,
>
> I am using mingw-w64 gcc v4.8.2 installed under the /mingw32 directory under
> mingw and I compile using msys/1.0 shell, or CMAKE from msys using "MSYS
> Makefiles".
> I adopted this after installing from a recipe and found it worked more often
> than not in situations where plain mingw/msys (installed on same computer)
> failed. So I've been pretty happy with things but as my projects get larger
> I need a better understanding of the general configuration and what gcc
> expects - especially the linker utilities.
>
> 2 quick questions:
> Is MSYS2 really neccessary to work with mingw-m64 compilers? I've managed
> OK with msys-1.0.
No, cmd.exe is enough to work with mingw-w64 compilers, or an IDE such
as QtCreator, CodeLite or Eclipse could be used. If you want a bash
command line, then MSYS2 is much better than MSYS.
Speaking for the core of MSYS2, it is forked from (and re-syncs
regularly with) current Cygwin which has ~15 years more bugfixes and
features applied to it than MSYS, it has 64bit support (so that dll
rebase issues practically vanish) and whereas make -jN (where N>1)
fails often with MSYS1 it is reliable on MSYS2 (due to improvements to
the core of Cygwin).
With regard to the user-space programs, MSYS2 provides bleeding edge
versions of build tools such as bash, gnumake, perl, python, git, svn,
cmake, gyp etc.
>
> I tried to overlay the 4.9.1 gcc-tools distribution on a /mingw32 tree
> under my older mingw installation, but the failure of a configure (couldn't
> determine default exec file) indicates I may need to do something more:
> true? if so, what?
>
> ---------------------
> My current problem is from trying to make a shared library in
> graphicsMagick,
> this line is the first link attempt after compilation:
> bin/sh ./libtool --tag=CC --mode=link gcc -O2 -mtune=pentium3 \
> (more flags) \
> -L/local32/lib -o magick/libGraphicsMagick.la -rpath
> /build32/GM1.3.20share/lib \
> (long list of .lo files) \
> magick/magick_libGraphicsMagick_la-analyze.lo \
> XXX..analyze.lo -lwebp -ltiff -lfreetype -ljpeg -lpng16 -lwmflite -lbz2
> -lxml2 -lz -lgdi32 -lm -lgomp -lpthread
>
> /bin/grep: /usr/local/lib/libpng16.la: No such file or directory
> /bin/sed: can't read /usr/local/lib/libpng16.la: No such file or directory
> libtool: link: `/usr/local/lib/libpng16.la' is not a valid libtool archive
> -------------------------------------------------------
> I'm guessing webp, freetype, jpeg and tiff were ready to load from the
> compiler tree, and png16 was the first library to get
> loaded from the library: -L/local32/lib=LDFLAGS holds all of these but it
> went to search in /usr/local/lib. ???.
You'll have to find someone with a better opinion of MSYS than I to
help you out with that, but you provide very much useful information
like the cmake command line or output log.
On MSYS2 you can benefit from prebuilt binaries for many programs,
tools and libraries, including most (if not all) of the ones you need.
As well as prebuilt binaries, the packaging system (a fork of
ArchLinux's Pacman) includes makepkg{,-mingw} which uses PKGBUILD
files to allow repeatable from-source builds. Without apologies for
attempting to speak for the other MSYS2 developers, we aim for MSYS2
to be to Windows what Homebrew is to OSX, roughly speaking.
We've got a few wrinkles to iron out concerning package updates, but
we are making progress on that. Even if you don't want to drink from
our precompiled kool-aid, using (and contributing to) the PKGBUILD
repositories will likely have good value for you.
Feel free to drop by #msys2 on oftc IRC, or ask questions on our
mailing list: https://sourceforge.net/p/msys2/mailman/msys2-users/
Best regards,
Ray.
>
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