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Re: Problem including float.h with gcc -mno-cygwin


That is a different and unrelated problem, I think.

barney-xp$ md5sum /usr/lib/gcc-lib/*/3.3.3/include/float.h
248cb979b88c788e88100b913eea6ce9 */usr/lib/gcc-lib/i686-pc-cygwin/3.3.3/include/float.h
248cb979b88c788e88100b913eea6ce9 */usr/lib/gcc-lib/i686-pc-mingw32/3.3.3/include/float.h
barney-xp$


The bug that I am observing is that /usr/i686-pc-cygwin/include needs to appear on the search path before any of the /usr/lib/gcc-lib include files.

Thanks.


Christopher Faylor wrote:


On Thu, Mar 17, 2005 at 11:44:40AM -0500, Christopher Faylor wrote:


On Thu, Mar 17, 2005 at 11:32:23AM -0500, Paul Stodghill wrote:


If a program includes <float.h> and is compiled with gcc -mno-cygwin, it appears to include the wrong instance of float.h. More specifically, "/usr/i686-pc-mingw32/include/float.h" is written assuming that it will be included before "/usr/lib/gcc/i686-pc-cygwin/3.4.1/include/float.h" and uses #include_next to pick up the compiler provided definitions. However, this does not appear to be happening.

The reasons appears to be that the "/usr/lib/gcc/i686-pc-cygwin/3.4.1/include" appears on the search path before "/usr/i686-pc-mingw32/include". Adding "-I/usr/i686-pc-mingw32/include" to the command line does not work because it is suppressed as a duplicate entry.


There aren't supposed to be any "cygwin" directories in the search path.
Apparently this part of gcc is busted.

Gerrit?



Just to clarify: there aren't supposed to be cygwin directories in the include (or lib) search path when -mno-cygwin is specified. Obviously (to me anyway) they should be there when that option is not used.

This is handled by the cygwin-specific .c files in gcc/config/i386/ .

cgf

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