On Mon, Feb 05, 2001 at 06:55:13PM +0000, Prof Brian D Ripley wrote:
>I believe there are several problems in using gcc-2.95.2-7.tar.gz with
>mingw-20010130-1.tar.gz (the latest on the mirror I use), and I will append
>a patch to the specs file which addresses these.
>
>1) mingw-20010130-1.tar.gz unpacks into /usr/include/mingw32, but the
> specs file has `mingw' in several places. I've assumed the specs file
> is the wrong one here.
The only ming32 that I see in mingw-20010130-1.tar.gz is libmingw32.a.
Earnie, do you want to change the name of this file?
>2) The mingw(32) files are selected by -idirafter, and so come after
> those in /usr/lib/gcc-lib/i686-pc-cygwin/2.95.2-7/include in the
> system include path. This is wrong at least in the case of
> float.h, where the mingw version must take precedence. Maybe
> -isystem /usr/local/include/mingw was just a mistake.
Nope. The isystem was just to get the include order correct. It is
a recent addition.
>3) The -mno-cygwin build is now targeted at msvcrt.dll (good).
> However, the mingw header files default to target crtdll.dll
> unless __MSVCRT__ is set, and it has not been.
I don't know how this happened but Earnie did supply me with patches
that did this. My cross-compilation environment somehow screwed up.
If you remove the specs file and do a 'gcc -dumpspecs', you'll see a
different configuration.
>4) `*mingw_include_path: i686-pc-cygwin' seems out of date : the
> mingw include files are no longer installed there.
I'm not sure how this is even used. Can someone enlighten me?
>5) I rather suspect from the header files that __MINGW32__ should be
> 0.3 not 0.2.
That was a fallout of 3) above.
>
>I usually use the real mingw compilers to compile the GNU R project
>(http://www.r-project.org) but a user complained that it no longer
>compiled under cygwin, which led me to investigate this.
>
>I have not attempted to sort out the g++ header file paths, as
>without a mingw version of libstdc++ (AFAICS) there is little
>mileage in compiling C++ under -mno-cygwin, and I don't have need of it.
Could you possibly break out this diff into separate lines so that I can
see what's changed?
cgf
>diff -u follows:
>--- specs.orig Tue Jan 30 21:38:32 2001
>+++ specs Sat Feb 3 18:22:32 2001
>@@ -5,7 +5,7 @@
>
>
> *cpp:
>--remap %(cpp_cpu) %{posix:-D_POSIX_SOURCE} %{!mno-cygwin:-D__CYGWIN32__
>-D__CYGWIN__ -Dunix -D__unix__ -D__unix -isystem /usr/local/include
>-idirafter /usr/include} %{mno-win32: %{mno-cygwin: %emno-cygwin and mno-win32 are
>not compatible}} %{mno-cygwin:-DWIN32 -D__WIN32__ -D__MINGW32__=0.2
>%{mthreads:-D_MT} -isystem /usr/local/include/mingw -idirafter
>/usr/include/mingw -iwithprefixbefore ../../../../mingw/include/g++-3
>-iwithprefixbefore ../../../../mingw/include -iwithprefixbefore
>../../../../mingw32/include/g++-3 -iwithprefixbefore ../../../../mingw32/include
>} %{mwin32:-DWIN32 -D_WIN32 -D__WIN32 -D__WIN32__ -DWINNT -idirafter
>/usr/include/w32api}
>+-remap %(cpp_cpu) %{posix:-D_POSIX_SOURCE} %{!mno-cygwin:-D__CYGWIN32__
>-D__CYGWIN__ -Dunix -D__unix__ -D__unix -isystem /usr/local/include
>-idirafter /usr/include} %{mno-win32: %{mno-cygwin: %emno-cygwin and mno-win32 are
>not compatible}} %{mno-cygwin:-DWIN32 -D__WIN32__ -D__MINGW32__=0.3 -D__MSVCRT__
>%{mthreads:-D_MT} -isystem /usr/include/mingw32 -idirafter
>/usr/include/mingw32 -iwithprefixbefore ../../../../mingw32/include/g++-3
>-iwithprefixbefore ../../../../mingw32/include -iwithprefixbefore
>../../../../mingw32/include/g++-3 -iwithprefixbefore ../../../../mingw32/include
>} %{mwin32:-DWIN32 -D_WIN32 -D__WIN32 -D__WIN32__ -DWINNT -idirafter
>/usr/include/w32api}
>
> *cc1:
> %(cc1_spec)
>@@ -80,7 +80,7 @@
> %{!mcpu*: %{m386:-mcpu=i386 -march=i386} %{m486:-mcpu=i486 -march=i486}
>%{mpentium:-mcpu=pentium} %{mpentiumpro:-mcpu=pentiumpro}}
>
> *mingw_include_path:
>-i686-pc-cygwin
>+
>
> *link_command:
> %{!fsyntax-only: %{!c:%{!M:%{!MM:%{!E:%{!S:%(linker) %l %X %{o*} %{A} %{d} %{e*}
>%{m} %{N} %{n} %{r} %{s} %{t} %{u*} %{x} %{z} %{Z}
> %{!A:%{!nostdlib:%{!nostartfiles:%S}}} %{static:} %{L*} %D %o
> %{!nostdlib:%{!nodefaultlibs:%G %L %G}}
>%{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*}
>
>
>--
>Brian D. Ripley, [EMAIL PROTECTED]
>Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
>University of Oxford, Tel: +44 1865 272861 (self)
>1 South Parks Road, +44 1865 272860 (secr)
>Oxford OX1 3TG, UK Fax: +44 1865 272595
>
>
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