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specs file for gcc-2.95.2-7 and -mno-cygwin
- To: <cygwin at cygwin dot com>
- Subject: specs file for gcc-2.95.2-7 and -mno-cygwin
- From: Prof Brian D Ripley <ripley at stats dot ox dot ac dot uk>
- Date: Mon, 5 Feb 2001 18:55:13 +0000 (GMT)
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.
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.
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.
4) `*mingw_include_path: i686-pc-cygwin' seems out of date : the
mingw include files are no longer installed there.
5) I rather suspect from the header files that __MINGW32__ should be
0.3 not 0.2.
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.
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, ripley@stats.ox.ac.uk
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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